./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product40.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_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/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_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/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_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/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 7e5f42a5bbc52e8ca75c0ac5e2c6aad044a3ab94096d236f597eae12e8fb5e5c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 20:02:24,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:02:24,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:02:24,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:02:24,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:02:24,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:02:24,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:02:24,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:02:24,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:02:24,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:02:24,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:02:24,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:02:24,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:02:24,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:02:24,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:02:24,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:02:24,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:02:24,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:02:24,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:02:24,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:02:24,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:02:24,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:02:24,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:02:24,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:02:24,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:02:24,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:02:24,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:02:24,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:02:24,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:02:24,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:02:24,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:02:24,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:02:24,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:02:24,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:02:24,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:02:24,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:02:24,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:02:24,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:02:24,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:02:24,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:02:24,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:02:24,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 20:02:24,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:02:24,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:02:24,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:02:24,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:02:24,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:02:24,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:02:24,197 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:02:24,198 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:02:24,198 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:02:24,198 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:02:24,199 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:02:24,199 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:02:24,199 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:02:24,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:02:24,200 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:02:24,200 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:02:24,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:02:24,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:02:24,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:02:24,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:02:24,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:02:24,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:02:24,202 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:02:24,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:02:24,202 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:02:24,202 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:02:24,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:02:24,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:02:24,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:02:24,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:02:24,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:02:24,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:02:24,205 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:02:24,205 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_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e5f42a5bbc52e8ca75c0ac5e2c6aad044a3ab94096d236f597eae12e8fb5e5c [2021-10-21 20:02:24,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:02:24,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:02:24,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:02:24,521 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:02:24,522 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:02:24,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2021-10-21 20:02:24,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/data/d2c24ca2a/d79f3b71de584a2e86358e1c7b1ab1cb/FLAG8a66678d2 [2021-10-21 20:02:25,172 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:02:25,173 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2021-10-21 20:02:25,187 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/data/d2c24ca2a/d79f3b71de584a2e86358e1c7b1ab1cb/FLAG8a66678d2 [2021-10-21 20:02:25,487 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/data/d2c24ca2a/d79f3b71de584a2e86358e1c7b1ab1cb [2021-10-21 20:02:25,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:02:25,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:02:25,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:02:25,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:02:25,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:02:25,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:02:25" (1/1) ... [2021-10-21 20:02:25,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456dd59c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25, skipping insertion in model container [2021-10-21 20:02:25,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:02:25" (1/1) ... [2021-10-21 20:02:25,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:02:25,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:02:25,791 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_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c[3936,3949] [2021-10-21 20:02:25,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:02:25,961 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:02:26,009 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_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c[3936,3949] [2021-10-21 20:02:26,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:02:26,135 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:02:26,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:26 WrapperNode [2021-10-21 20:02:26,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:02:26,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:02:26,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:02:26,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:02:26,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:26" (1/1) ... [2021-10-21 20:02:26,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:26" (1/1) ... [2021-10-21 20:02:26,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:02:26,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:02:26,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:02:26,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:02:26,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:26" (1/1) ... [2021-10-21 20:02:26,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:26" (1/1) ... [2021-10-21 20:02:26,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:26" (1/1) ... [2021-10-21 20:02:26,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:26" (1/1) ... [2021-10-21 20:02:26,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:26" (1/1) ... [2021-10-21 20:02:26,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:26" (1/1) ... [2021-10-21 20:02:26,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:26" (1/1) ... [2021-10-21 20:02:26,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:02:26,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:02:26,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:02:26,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:02:26,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:26" (1/1) ... [2021-10-21 20:02:26,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:26,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:26,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:26,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:02:26,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:02:26,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:02:26,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:02:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:02:27,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:02:27,326 INFO L299 CfgBuilder]: Removed 168 assume(true) statements. [2021-10-21 20:02:27,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:27 BoogieIcfgContainer [2021-10-21 20:02:27,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:02:27,330 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:02:27,330 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:02:27,334 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:02:27,335 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:02:27,335 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:02:25" (1/3) ... [2021-10-21 20:02:27,337 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56451e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:02:27, skipping insertion in model container [2021-10-21 20:02:27,337 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:02:27,337 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:26" (2/3) ... [2021-10-21 20:02:27,338 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56451e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:02:27, skipping insertion in model container [2021-10-21 20:02:27,338 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:02:27,338 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:27" (3/3) ... [2021-10-21 20:02:27,340 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product40.cil.c [2021-10-21 20:02:27,404 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:02:27,404 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:02:27,404 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:02:27,404 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:02:27,404 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:02:27,405 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:02:27,405 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:02:27,405 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:02:27,432 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 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 20:02:27,460 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-10-21 20:02:27,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:27,461 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:27,470 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:02:27,470 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:02:27,470 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:02:27,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 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 20:02:27,479 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-10-21 20:02:27,479 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:27,479 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:27,480 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:02:27,481 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:02:27,486 INFO L791 eck$LassoCheckResult]: Stem: 110#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string15.base, #t~string15.offset, 1);call write~init~int(77, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(101, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(116, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(104, #t~string15.base, 4 + #t~string15.offset, 1);call write~init~int(58, #t~string15.base, 5 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 6 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string17.base, #t~string17.offset, 1);call write~init~int(82, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(73, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(84, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 4 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(75, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string21.base, #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 1 + #t~string21.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 36#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 38#L176true havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 81#L184true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 48#L140true assume 0 != main_~tmp~0; 106#L113true havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 45#L208-1true [2021-10-21 20:02:27,487 INFO L793 eck$LassoCheckResult]: Loop: 45#L208-1true assume !false; 43#L549true assume test_~splverifierCounter~0 < 4; 117#L550true test_~tmp~5 := test_#t~nondet42;havoc test_#t~nondet42; 113#L558true assume !(0 != test_~tmp~5); 98#L558-1true test_~tmp___0~2 := test_#t~nondet43;havoc test_#t~nondet43; 118#L568true assume !(0 != test_~tmp___0~2); 79#L568-1true test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 41#L578true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 18#L586-1true assume !(0 != ~pumpRunning~0); 28#L344true assume !(0 != ~systemActive~0); 60#L351true havoc __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_#t~ret11, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 58#L282-1true __utac_acc__Specification3_spec__1_#t~ret9 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret9;havoc __utac_acc__Specification3_spec__1_#t~ret9; 83#L202true assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 45#L208-1true [2021-10-21 20:02:27,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:27,493 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-21 20:02:27,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:27,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147193289] [2021-10-21 20:02:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:27,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:27,853 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:28,031 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:28,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:28,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1670447617, now seen corresponding path program 1 times [2021-10-21 20:02:28,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:28,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230380539] [2021-10-21 20:02:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:28,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:28,107 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 20:02:28,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:02:28,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230380539] [2021-10-21 20:02:28,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230380539] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:02:28,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:02:28,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:02:28,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462066792] [2021-10-21 20:02:28,117 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:02:28,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:02:28,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:02:28,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:02:28,150 INFO L87 Difference]: Start difference. First operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 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 20:02:28,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:02:28,215 INFO L93 Difference]: Finished difference Result 226 states and 330 transitions. [2021-10-21 20:02:28,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:02:28,217 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 226 states and 330 transitions. [2021-10-21 20:02:28,224 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 146 [2021-10-21 20:02:28,231 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 226 states to 212 states and 315 transitions. [2021-10-21 20:02:28,233 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 212 [2021-10-21 20:02:28,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 212 [2021-10-21 20:02:28,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 315 transitions. [2021-10-21 20:02:28,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:02:28,237 INFO L681 BuchiCegarLoop]: Abstraction has 212 states and 315 transitions. [2021-10-21 20:02:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 315 transitions. [2021-10-21 20:02:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2021-10-21 20:02:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 210 states have (on average 1.4857142857142858) internal successors, (312), 209 states have internal predecessors, (312), 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 20:02:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 312 transitions. [2021-10-21 20:02:28,304 INFO L704 BuchiCegarLoop]: Abstraction has 210 states and 312 transitions. [2021-10-21 20:02:28,304 INFO L587 BuchiCegarLoop]: Abstraction has 210 states and 312 transitions. [2021-10-21 20:02:28,304 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:02:28,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 210 states and 312 transitions. [2021-10-21 20:02:28,311 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 144 [2021-10-21 20:02:28,311 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:28,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:28,313 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:02:28,313 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:02:28,313 INFO L791 eck$LassoCheckResult]: Stem: 469#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string15.base, #t~string15.offset, 1);call write~init~int(77, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(101, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(116, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(104, #t~string15.base, 4 + #t~string15.offset, 1);call write~init~int(58, #t~string15.base, 5 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 6 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string17.base, #t~string17.offset, 1);call write~init~int(82, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(73, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(84, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 4 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(75, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string21.base, #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 1 + #t~string21.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 404#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 405#L176 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 408#L184 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 420#L140 assume 0 != main_~tmp~0; 421#L113 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 416#L208-1 [2021-10-21 20:02:28,315 INFO L793 eck$LassoCheckResult]: Loop: 416#L208-1 assume !false; 413#L549 assume test_~splverifierCounter~0 < 4; 414#L550 test_~tmp~5 := test_#t~nondet42;havoc test_#t~nondet42; 473#L558 assume !(0 != test_~tmp~5); 459#L558-1 test_~tmp___0~2 := test_#t~nondet43;havoc test_#t~nondet43; 460#L568 assume !(0 != test_~tmp___0~2); 430#L568-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 478#L578 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 377#L586-1 assume !(0 != ~pumpRunning~0); 379#L344 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret23, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 393#L402 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret22, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 431#L376-1 assume !(0 == ~pumpRunning~0); 368#L351 havoc __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_#t~ret11, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 435#L282-1 __utac_acc__Specification3_spec__1_#t~ret9 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret9;havoc __utac_acc__Specification3_spec__1_#t~ret9; 436#L202 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 416#L208-1 [2021-10-21 20:02:28,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:28,316 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-21 20:02:28,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:28,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556597654] [2021-10-21 20:02:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:28,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:28,407 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:28,474 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:28,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:28,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1422660394, now seen corresponding path program 1 times [2021-10-21 20:02:28,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:28,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842281332] [2021-10-21 20:02:28,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:28,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:28,498 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 20:02:28,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:02:28,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842281332] [2021-10-21 20:02:28,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842281332] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:02:28,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:02:28,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:02:28,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810560754] [2021-10-21 20:02:28,501 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:02:28,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:02:28,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:02:28,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:02:28,502 INFO L87 Difference]: Start difference. First operand 210 states and 312 transitions. cyclomatic complexity: 105 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 20:02:28,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:02:28,643 INFO L93 Difference]: Finished difference Result 305 states and 430 transitions. [2021-10-21 20:02:28,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:02:28,644 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 305 states and 430 transitions. [2021-10-21 20:02:28,648 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 215 [2021-10-21 20:02:28,653 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 305 states to 305 states and 430 transitions. [2021-10-21 20:02:28,653 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 305 [2021-10-21 20:02:28,654 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 305 [2021-10-21 20:02:28,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 305 states and 430 transitions. [2021-10-21 20:02:28,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:02:28,657 INFO L681 BuchiCegarLoop]: Abstraction has 305 states and 430 transitions. [2021-10-21 20:02:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states and 430 transitions. [2021-10-21 20:02:28,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2021-10-21 20:02:28,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 305 states have (on average 1.4098360655737705) internal successors, (430), 304 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:02:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 430 transitions. [2021-10-21 20:02:28,674 INFO L704 BuchiCegarLoop]: Abstraction has 305 states and 430 transitions. [2021-10-21 20:02:28,674 INFO L587 BuchiCegarLoop]: Abstraction has 305 states and 430 transitions. [2021-10-21 20:02:28,674 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:02:28,674 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 305 states and 430 transitions. [2021-10-21 20:02:28,677 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 215 [2021-10-21 20:02:28,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:28,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:28,678 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:02:28,678 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 20:02:28,678 INFO L791 eck$LassoCheckResult]: Stem: 1018#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string15.base, #t~string15.offset, 1);call write~init~int(77, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(101, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(116, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(104, #t~string15.base, 4 + #t~string15.offset, 1);call write~init~int(58, #t~string15.base, 5 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 6 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string17.base, #t~string17.offset, 1);call write~init~int(82, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(73, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(84, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 4 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(75, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string21.base, #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 1 + #t~string21.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 928#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 929#L176 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 932#L184 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 946#L140 assume 0 != main_~tmp~0; 947#L113 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 967#L208-1 [2021-10-21 20:02:28,679 INFO L793 eck$LassoCheckResult]: Loop: 967#L208-1 assume !false; 938#L549 assume test_~splverifierCounter~0 < 4; 939#L550 test_~tmp~5 := test_#t~nondet42;havoc test_#t~nondet42; 1055#L558 assume !(0 != test_~tmp~5); 1003#L558-1 test_~tmp___0~2 := test_#t~nondet43;havoc test_#t~nondet43; 1004#L568 assume !(0 != test_~tmp___0~2); 1111#L568-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 1110#L578 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 934#L586-1 assume !(0 != ~pumpRunning~0); 1093#L344 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret23, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 986#L402 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret22, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 956#L376-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 957#L322-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 1011#L327-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 1012#L504-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1079#L504-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 1077#L510-1 processEnvironment__wrappee__highWaterSensor_#t~ret22 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret22;havoc processEnvironment__wrappee__highWaterSensor_#t~ret22; 1074#L380-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 1073#L351 havoc __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_#t~ret11, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 1117#L282-1 __utac_acc__Specification3_spec__1_#t~ret9 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret9;havoc __utac_acc__Specification3_spec__1_#t~ret9; 984#L202 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 967#L208-1 [2021-10-21 20:02:28,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:28,680 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-21 20:02:28,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:28,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948744968] [2021-10-21 20:02:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:28,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:28,725 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:28,775 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:28,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:28,775 INFO L82 PathProgramCache]: Analyzing trace with hash 287627938, now seen corresponding path program 1 times [2021-10-21 20:02:28,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:28,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94952052] [2021-10-21 20:02:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:28,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:28,818 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:28,826 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:28,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:28,827 INFO L82 PathProgramCache]: Analyzing trace with hash 743699132, now seen corresponding path program 1 times [2021-10-21 20:02:28,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:28,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630999385] [2021-10-21 20:02:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:28,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:28,895 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 20:02:28,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:02:28,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630999385] [2021-10-21 20:02:28,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630999385] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:02:28,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:02:28,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:02:28,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312521306] [2021-10-21 20:02:29,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:02:29,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:02:29,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:02:29,242 INFO L87 Difference]: Start difference. First operand 305 states and 430 transitions. cyclomatic complexity: 128 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 20:02:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:02:29,444 INFO L93 Difference]: Finished difference Result 1017 states and 1438 transitions. [2021-10-21 20:02:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:02:29,444 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1017 states and 1438 transitions. [2021-10-21 20:02:29,458 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 762 [2021-10-21 20:02:29,469 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1017 states to 1017 states and 1438 transitions. [2021-10-21 20:02:29,469 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1017 [2021-10-21 20:02:29,471 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1017 [2021-10-21 20:02:29,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1017 states and 1438 transitions. [2021-10-21 20:02:29,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:02:29,480 INFO L681 BuchiCegarLoop]: Abstraction has 1017 states and 1438 transitions. [2021-10-21 20:02:29,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states and 1438 transitions. [2021-10-21 20:02:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 604. [2021-10-21 20:02:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 604 states have (on average 1.3874172185430464) internal successors, (838), 603 states have internal predecessors, (838), 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 20:02:29,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 838 transitions. [2021-10-21 20:02:29,527 INFO L704 BuchiCegarLoop]: Abstraction has 604 states and 838 transitions. [2021-10-21 20:02:29,527 INFO L587 BuchiCegarLoop]: Abstraction has 604 states and 838 transitions. [2021-10-21 20:02:29,528 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 20:02:29,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 604 states and 838 transitions. [2021-10-21 20:02:29,533 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 430 [2021-10-21 20:02:29,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:29,533 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:29,536 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:02:29,536 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 20:02:29,537 INFO L791 eck$LassoCheckResult]: Stem: 2353#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string15.base, #t~string15.offset, 1);call write~init~int(77, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(101, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(116, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(104, #t~string15.base, 4 + #t~string15.offset, 1);call write~init~int(58, #t~string15.base, 5 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 6 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string17.base, #t~string17.offset, 1);call write~init~int(82, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(73, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(84, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 4 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(75, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string21.base, #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 1 + #t~string21.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 2273#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 2274#L176 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 2277#L184 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 2290#L140 assume 0 != main_~tmp~0; 2291#L113 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2285#L208-1 [2021-10-21 20:02:29,537 INFO L793 eck$LassoCheckResult]: Loop: 2285#L208-1 assume !false; 2282#L549 assume test_~splverifierCounter~0 < 4; 2283#L550 test_~tmp~5 := test_#t~nondet42;havoc test_#t~nondet42; 2355#L558 assume !(0 != test_~tmp~5); 2345#L558-1 test_~tmp___0~2 := test_#t~nondet43;havoc test_#t~nondet43; 2346#L568 assume !(0 != test_~tmp___0~2); 2357#L568-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 2278#L578 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2241#L586-1 assume !(0 != ~pumpRunning~0); 2242#L344 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret23, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 2259#L402 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret22, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 2814#L376-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 2815#L322-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 2349#L327-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 2350#L504-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 2812#L504-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 2789#L510-1 processEnvironment__wrappee__highWaterSensor_#t~ret22 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret22;havoc processEnvironment__wrappee__highWaterSensor_#t~ret22; 2228#L380-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 2230#L351 havoc __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_#t~ret11, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 2696#L282-1 __utac_acc__Specification3_spec__1_#t~ret9 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret9;havoc __utac_acc__Specification3_spec__1_#t~ret9; 2332#L202 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~1);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 2333#L314 __utac_acc__Specification3_spec__1_#t~ret10 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret10;havoc __utac_acc__Specification3_spec__1_#t~ret10; 2347#L208 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 2285#L208-1 [2021-10-21 20:02:29,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:29,538 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-21 20:02:29,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:29,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278049998] [2021-10-21 20:02:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:29,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:29,604 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:29,661 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:29,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:29,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1532549460, now seen corresponding path program 1 times [2021-10-21 20:02:29,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:29,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507205113] [2021-10-21 20:02:29,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:29,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:29,670 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:29,684 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:29,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:29,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1730302702, now seen corresponding path program 1 times [2021-10-21 20:02:29,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:29,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679986794] [2021-10-21 20:02:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:29,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:29,764 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:29,835 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:03:29,242 WARN L207 SmtUtils]: Spent 59.05 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-21 20:04:25,356 WARN L207 SmtUtils]: Spent 27.55 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-21 20:04:25,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:04:25 BoogieIcfgContainer [2021-10-21 20:04:25,500 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:04:25,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:04:25,501 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:04:25,501 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:04:25,501 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:27" (3/4) ... [2021-10-21 20:04:25,504 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 20:04:25,561 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:04:25,562 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:04:25,563 INFO L168 Benchmark]: Toolchain (without parser) took 120068.52 ms. Allocated memory was 102.8 MB in the beginning and 178.3 MB in the end (delta: 75.5 MB). Free memory was 70.2 MB in the beginning and 123.0 MB in the end (delta: -52.8 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:25,563 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 55.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:04:25,564 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.49 ms. Allocated memory was 102.8 MB in the beginning and 140.5 MB in the end (delta: 37.7 MB). Free memory was 69.8 MB in the beginning and 108.5 MB in the end (delta: -38.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:25,565 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.96 ms. Allocated memory is still 140.5 MB. Free memory was 108.4 MB in the beginning and 104.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:25,565 INFO L168 Benchmark]: Boogie Preprocessor took 46.11 ms. Allocated memory is still 140.5 MB. Free memory was 104.3 MB in the beginning and 102.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:25,566 INFO L168 Benchmark]: RCFGBuilder took 1058.95 ms. Allocated memory is still 140.5 MB. Free memory was 101.4 MB in the beginning and 60.3 MB in the end (delta: 41.1 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:25,566 INFO L168 Benchmark]: BuchiAutomizer took 118169.90 ms. Allocated memory was 140.5 MB in the beginning and 178.3 MB in the end (delta: 37.7 MB). Free memory was 59.5 MB in the beginning and 126.2 MB in the end (delta: -66.7 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:25,567 INFO L168 Benchmark]: Witness Printer took 61.26 ms. Allocated memory is still 178.3 MB. Free memory was 126.2 MB in the beginning and 123.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:25,570 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 55.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 639.49 ms. Allocated memory was 102.8 MB in the beginning and 140.5 MB in the end (delta: 37.7 MB). Free memory was 69.8 MB in the beginning and 108.5 MB in the end (delta: -38.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.96 ms. Allocated memory is still 140.5 MB. Free memory was 108.4 MB in the beginning and 104.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.11 ms. Allocated memory is still 140.5 MB. Free memory was 104.3 MB in the beginning and 102.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1058.95 ms. Allocated memory is still 140.5 MB. Free memory was 101.4 MB in the beginning and 60.3 MB in the end (delta: 41.1 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 118169.90 ms. Allocated memory was 140.5 MB in the beginning and 178.3 MB in the end (delta: 37.7 MB). Free memory was 59.5 MB in the beginning and 126.2 MB in the end (delta: -66.7 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.1 GB. * Witness Printer took 61.26 ms. Allocated memory is still 178.3 MB. Free memory was 126.2 MB in the beginning and 123.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 604 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 118.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 117.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 115.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 415 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 604 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 560 SDtfs, 913 SDslu, 934 SDs, 0 SdLazy, 110 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 197.3ms 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: 548]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=32759} State at position 1 is {NULL=0, NULL=0, NULL=32759, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@482d53fc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1269138b=70, NULL=32772, NULL=32771, methaneLevelCritical=0, tmp=0, NULL=0, retValue_acc=0, NULL=32770, NULL=0, tmp___1=0, NULL=0, NULL=32768, tmp=0, cleanupTimeShifts=4, NULL=32764, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@730207b5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16073f04=0, waterLevel=1, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, NULL=32779, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bed6278=0, NULL=0, \result=1, NULL=0, tmp=1, NULL=0, NULL=32784, NULL=0, NULL=0, NULL=0, NULL=0, tmp___0=0, retValue_acc=1, NULL=32776, NULL=32782, NULL=32781, NULL=32774, tmp=0, head=0, NULL=0, NULL=0, NULL=32773, NULL=32775, NULL=32767, retValue_acc=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62ceb734=0, NULL=32766, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e5d60c5=0, tmp___0=0, NULL=0, NULL=0, NULL=32785, NULL=0, NULL=0, tmp___0=1, NULL=32778, NULL=32769, tmp=0, NULL=0, NULL=0, systemActive=1, NULL=32780, \result=1, NULL=0, retValue_acc=0, \result=0, NULL=32762, \result=0, NULL=32761, NULL=0, NULL=32783, NULL=0, NULL=0, NULL=32777, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f31340e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c0fb53f=0, NULL=32787, retValue_acc=1, tmp___2=70, splverifierCounter=0, NULL=0, \result=0, NULL=32763, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@25af4a88=0, NULL=32760, NULL=32765, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e816199=0, NULL=32786} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int cleanupTimeShifts = 4; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L337] int pumpRunning = 0; [L338] int systemActive = 1; [L776] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L131] int retValue_acc ; [L132] int tmp ; [L180] int retValue_acc ; [L183] retValue_acc = 1 [L184] return (retValue_acc); [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L539] int splverifierCounter ; [L540] int tmp ; [L541] int tmp___0 ; [L542] int tmp___1 ; [L543] int tmp___2 ; [L546] splverifierCounter = 0 Loop: [L548] COND TRUE 1 [L550] COND TRUE splverifierCounter < 4 [L556] tmp = __VERIFIER_nondet_int() [L558] COND FALSE !(\read(tmp)) [L566] tmp___0 = __VERIFIER_nondet_int() [L568] COND FALSE !(\read(tmp___0)) [L576] tmp___2 = __VERIFIER_nondet_int() [L578] COND TRUE \read(tmp___2) [L533] systemActive = 1 [L344] COND FALSE !(\read(pumpRunning)) [L351] COND TRUE \read(systemActive) [L399] int tmp ; [L402] COND FALSE !(\read(pumpRunning)) [L373] int tmp ; [L376] COND TRUE ! pumpRunning [L496] int retValue_acc ; [L497] int tmp ; [L498] int tmp___0 ; [L319] int retValue_acc ; [L322] COND TRUE waterLevel < 2 [L323] retValue_acc = 1 [L324] return (retValue_acc); [L502] tmp = isHighWaterSensorDry() [L504] COND TRUE \read(tmp) [L505] tmp___0 = 0 [L509] retValue_acc = tmp___0 [L510] return (retValue_acc); [L378] tmp = isHighWaterLevel() [L380] COND FALSE !(\read(tmp)) [L194] int tmp ; [L195] int tmp___0 ; [L196] int tmp___1 ; [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); [L200] tmp = isMethaneLevelCritical() [L202] COND FALSE !(\read(tmp)) [L310] int retValue_acc ; [L313] retValue_acc = waterLevel [L314] return (retValue_acc); [L206] tmp___0 = getWaterLevel() [L208] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:04:25,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e3907f-e0cd-45e7-ad3c-bca96dc7c201/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...