./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt --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 7692c73e7413f9555138866d08e707f26455dbc0 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-4e77c04 [2021-10-13 00:44:51,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:44:51,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:44:51,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:44:51,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:44:51,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:44:51,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:44:51,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:44:51,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:44:51,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:44:51,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:44:51,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:44:51,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:44:51,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:44:51,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:44:51,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:44:51,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:44:51,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:44:51,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:44:51,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:44:51,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:44:51,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:44:51,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:44:51,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:44:51,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:44:51,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:44:51,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:44:51,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:44:51,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:44:51,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:44:51,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:44:51,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:44:51,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:44:51,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:44:51,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:44:51,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:44:51,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:44:51,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:44:51,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:44:51,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:44:51,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:44:51,302 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-13 00:44:51,347 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:44:51,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:44:51,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:44:51,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:44:51,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:44:51,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:44:51,350 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:44:51,350 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:44:51,351 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:44:51,351 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:44:51,351 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:44:51,351 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:44:51,352 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:44:51,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:44:51,352 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:44:51,352 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:44:51,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:44:51,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:44:51,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:44:51,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:44:51,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:44:51,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:44:51,354 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:44:51,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:44:51,355 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:44:51,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:44:51,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:44:51,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:44:51,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:44:51,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:44:51,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:44:51,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:44:51,357 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:44:51,357 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_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7692c73e7413f9555138866d08e707f26455dbc0 [2021-10-13 00:44:51,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:44:51,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:44:51,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:44:51,614 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:44:51,615 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:44:51,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c [2021-10-13 00:44:51,713 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/data/8bfeb8910/6ad9c538e9ef49199295dd82007c4ae8/FLAGa71ab6c43 [2021-10-13 00:44:52,248 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:44:52,248 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c [2021-10-13 00:44:52,263 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/data/8bfeb8910/6ad9c538e9ef49199295dd82007c4ae8/FLAGa71ab6c43 [2021-10-13 00:44:52,586 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/data/8bfeb8910/6ad9c538e9ef49199295dd82007c4ae8 [2021-10-13 00:44:52,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:44:52,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:44:52,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:44:52,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:44:52,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:44:52,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:44:52" (1/1) ... [2021-10-13 00:44:52,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66fdce50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:52, skipping insertion in model container [2021-10-13 00:44:52,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:44:52" (1/1) ... [2021-10-13 00:44:52,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:44:52,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:44:52,941 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_e3fe5842-2d53-408f-86ca-5806e68c0f86/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c[7822,7835] [2021-10-13 00:44:53,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:44:53,039 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:44:53,106 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_e3fe5842-2d53-408f-86ca-5806e68c0f86/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c[7822,7835] [2021-10-13 00:44:53,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:44:53,191 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:44:53,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:53 WrapperNode [2021-10-13 00:44:53,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:44:53,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:44:53,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:44:53,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:44:53,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:53" (1/1) ... [2021-10-13 00:44:53,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:53" (1/1) ... [2021-10-13 00:44:53,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:44:53,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:44:53,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:44:53,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:44:53,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:53" (1/1) ... [2021-10-13 00:44:53,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:53" (1/1) ... [2021-10-13 00:44:53,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:53" (1/1) ... [2021-10-13 00:44:53,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:53" (1/1) ... [2021-10-13 00:44:53,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:53" (1/1) ... [2021-10-13 00:44:53,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:53" (1/1) ... [2021-10-13 00:44:53,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:53" (1/1) ... [2021-10-13 00:44:53,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:44:53,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:44:53,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:44:53,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:44:53,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:53" (1/1) ... [2021-10-13 00:44:53,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:44:53,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:44:53,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:44:53,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:44:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:44:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:44:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:44:53,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:44:54,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:44:54,551 INFO L299 CfgBuilder]: Removed 296 assume(true) statements. [2021-10-13 00:44:54,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:44:54 BoogieIcfgContainer [2021-10-13 00:44:54,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:44:54,557 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:44:54,557 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:44:54,561 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:44:54,562 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:44:54,562 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:44:52" (1/3) ... [2021-10-13 00:44:54,564 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58c25b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:44:54, skipping insertion in model container [2021-10-13 00:44:54,564 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:44:54,565 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:53" (2/3) ... [2021-10-13 00:44:54,566 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58c25b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:44:54, skipping insertion in model container [2021-10-13 00:44:54,566 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:44:54,566 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:44:54" (3/3) ... [2021-10-13 00:44:54,567 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2021-10-13 00:44:54,619 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:44:54,619 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:44:54,620 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:44:54,620 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:44:54,620 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:44:54,620 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:44:54,620 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:44:54,621 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:44:54,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:44:54,673 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2021-10-13 00:44:54,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:44:54,674 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:44:54,683 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:44:54,683 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:44:54,683 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:44:54,684 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:44:54,695 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2021-10-13 00:44:54,695 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:44:54,696 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:44:54,697 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:44:54,697 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:44:54,703 INFO L791 eck$LassoCheckResult]: Stem: 192#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 138#L-1true havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 99#L506true havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 68#L514true main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 165#L1026true assume 0 != main_~tmp~10; 61#L1002true ~switchedOnBeforeTS~0 := 0; 72#L534true havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 26#L555-1true [2021-10-13 00:44:54,703 INFO L793 eck$LassoCheckResult]: Loop: 26#L555-1true assume !false; 16#L423true assume test_~splverifierCounter~0 < 4; 188#L424true test_~tmp~5 := test_#t~nondet39;havoc test_#t~nondet39; 176#L432true assume !(0 != test_~tmp~5); 60#L432-1true test_~tmp___0~2 := test_#t~nondet40;havoc test_#t~nondet40; 132#L442true assume !(0 != test_~tmp___0~2); 137#L442-1true test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 162#L452true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 161#L460-1true havoc __utac_acc__Specification5_spec__2_#t~ret44;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 171#L309true __utac_acc__Specification5_spec__2_#t~ret44 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret44;havoc __utac_acc__Specification5_spec__2_#t~ret44; 91#L544true assume !(0 != ~pumpRunning~0); 185#L172true assume !(0 != ~systemActive~0); 194#L179true havoc __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_#t~ret46, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 175#L125true __utac_acc__Specification5_spec__3_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 196#L555true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 26#L555-1true [2021-10-13 00:44:54,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:44:54,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-13 00:44:54,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:44:54,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844217456] [2021-10-13 00:44:54,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:44:54,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:44:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:44:54,961 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:44:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:44:55,147 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:44:55,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:44:55,165 INFO L82 PathProgramCache]: Analyzing trace with hash 680336182, now seen corresponding path program 1 times [2021-10-13 00:44:55,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:44:55,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587726869] [2021-10-13 00:44:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:44:55,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:44:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:44:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:44:55,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:44:55,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587726869] [2021-10-13 00:44:55,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587726869] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:44:55,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:44:55,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:44:55,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636926555] [2021-10-13 00:44:55,273 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:44:55,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:44:55,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:44:55,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:44:55,307 INFO L87 Difference]: Start difference. First operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:44:55,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:44:55,419 INFO L93 Difference]: Finished difference Result 387 states and 575 transitions. [2021-10-13 00:44:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:44:55,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 387 states and 575 transitions. [2021-10-13 00:44:55,455 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 254 [2021-10-13 00:44:55,474 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 387 states to 373 states and 560 transitions. [2021-10-13 00:44:55,476 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 373 [2021-10-13 00:44:55,480 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 373 [2021-10-13 00:44:55,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 373 states and 560 transitions. [2021-10-13 00:44:55,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:44:55,484 INFO L681 BuchiCegarLoop]: Abstraction has 373 states and 560 transitions. [2021-10-13 00:44:55,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states and 560 transitions. [2021-10-13 00:44:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2021-10-13 00:44:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 371 states have (on average 1.5013477088948788) internal successors, (557), 370 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:44:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 557 transitions. [2021-10-13 00:44:55,546 INFO L704 BuchiCegarLoop]: Abstraction has 371 states and 557 transitions. [2021-10-13 00:44:55,546 INFO L587 BuchiCegarLoop]: Abstraction has 371 states and 557 transitions. [2021-10-13 00:44:55,546 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:44:55,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 371 states and 557 transitions. [2021-10-13 00:44:55,550 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 252 [2021-10-13 00:44:55,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:44:55,551 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:44:55,551 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:44:55,552 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:44:55,552 INFO L791 eck$LassoCheckResult]: Stem: 809#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 688#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 689#L506 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 773#L514 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 763#L1026 assume 0 != main_~tmp~10; 760#L1002 ~switchedOnBeforeTS~0 := 0; 761#L534 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 777#L555-1 [2021-10-13 00:44:55,552 INFO L793 eck$LassoCheckResult]: Loop: 777#L555-1 assume !false; 637#L423 assume test_~splverifierCounter~0 < 4; 638#L424 test_~tmp~5 := test_#t~nondet39;havoc test_#t~nondet39; 781#L432 assume !(0 != test_~tmp~5); 759#L432-1 test_~tmp___0~2 := test_#t~nondet40;havoc test_#t~nondet40; 669#L442 assume !(0 != test_~tmp___0~2); 612#L442-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 687#L452 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 738#L460-1 havoc __utac_acc__Specification5_spec__2_#t~ret44;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 755#L309 __utac_acc__Specification5_spec__2_#t~ret44 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret44;havoc __utac_acc__Specification5_spec__2_#t~ret44; 775#L544 assume !(0 != ~pumpRunning~0); 751#L172 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 802#L256 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret18, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 925#L230-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret17, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 904#L204-3 assume !(0 == ~pumpRunning~0); 903#L179 havoc __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_#t~ret46, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 902#L125 __utac_acc__Specification5_spec__3_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 900#L555 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 777#L555-1 [2021-10-13 00:44:55,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:44:55,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-13 00:44:55,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:44:55,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875161947] [2021-10-13 00:44:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:44:55,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:44:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:44:55,643 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:44:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:44:55,736 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:44:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:44:55,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1848123806, now seen corresponding path program 1 times [2021-10-13 00:44:55,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:44:55,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088744496] [2021-10-13 00:44:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:44:55,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:44:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:44:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:44:55,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:44:55,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088744496] [2021-10-13 00:44:55,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088744496] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:44:55,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:44:55,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:44:55,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450974193] [2021-10-13 00:44:55,761 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:44:55,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:44:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:44:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:44:55,763 INFO L87 Difference]: Start difference. First operand 371 states and 557 transitions. cyclomatic complexity: 189 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:44:55,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:44:55,900 INFO L93 Difference]: Finished difference Result 398 states and 559 transitions. [2021-10-13 00:44:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:44:55,901 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 559 transitions. [2021-10-13 00:44:55,907 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 279 [2021-10-13 00:44:55,913 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 398 states and 559 transitions. [2021-10-13 00:44:55,913 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 398 [2021-10-13 00:44:55,915 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 398 [2021-10-13 00:44:55,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 398 states and 559 transitions. [2021-10-13 00:44:55,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:44:55,921 INFO L681 BuchiCegarLoop]: Abstraction has 398 states and 559 transitions. [2021-10-13 00:44:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states and 559 transitions. [2021-10-13 00:44:55,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-10-13 00:44:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 398 states have (on average 1.4045226130653266) internal successors, (559), 397 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:44:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 559 transitions. [2021-10-13 00:44:55,949 INFO L704 BuchiCegarLoop]: Abstraction has 398 states and 559 transitions. [2021-10-13 00:44:55,949 INFO L587 BuchiCegarLoop]: Abstraction has 398 states and 559 transitions. [2021-10-13 00:44:55,949 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 00:44:55,949 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 398 states and 559 transitions. [2021-10-13 00:44:55,952 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 279 [2021-10-13 00:44:55,953 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:44:55,953 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:44:55,954 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:44:55,954 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:44:55,954 INFO L791 eck$LassoCheckResult]: Stem: 1546#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1437#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 1438#L506 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 1513#L514 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 1505#L1026 assume 0 != main_~tmp~10; 1503#L1002 ~switchedOnBeforeTS~0 := 0; 1504#L534 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1520#L555-1 [2021-10-13 00:44:55,955 INFO L793 eck$LassoCheckResult]: Loop: 1520#L555-1 assume !false; 1658#L423 assume test_~splverifierCounter~0 < 4; 1657#L424 test_~tmp~5 := test_#t~nondet39;havoc test_#t~nondet39; 1656#L432 assume !(0 != test_~tmp~5); 1654#L432-1 test_~tmp___0~2 := test_#t~nondet40;havoc test_#t~nondet40; 1653#L442 assume !(0 != test_~tmp___0~2); 1651#L442-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 1650#L452 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1554#L460-1 havoc __utac_acc__Specification5_spec__2_#t~ret44;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 1580#L309 __utac_acc__Specification5_spec__2_#t~ret44 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret44;havoc __utac_acc__Specification5_spec__2_#t~ret44; 1577#L544 assume !(0 != ~pumpRunning~0); 1538#L172 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1464#L256 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret18, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 1465#L230-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret17, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1473#L204-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1451#L133-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1381#L138-3 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 1382#L358-9 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 1400#L358-11 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1401#L364-3 processEnvironment__wrappee__highWaterSensor_#t~ret17 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret17;havoc processEnvironment__wrappee__highWaterSensor_#t~ret17; 1511#L208-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1462#L179 havoc __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_#t~ret46, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1575#L125 __utac_acc__Specification5_spec__3_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 1661#L555 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 1520#L555-1 [2021-10-13 00:44:55,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:44:55,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-13 00:44:55,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:44:55,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649191100] [2021-10-13 00:44:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:44:55,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:44:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:44:55,995 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:44:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:44:56,041 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:44:56,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:44:56,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1709468010, now seen corresponding path program 1 times [2021-10-13 00:44:56,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:44:56,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152504282] [2021-10-13 00:44:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:44:56,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:44:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:44:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:44:56,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:44:56,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152504282] [2021-10-13 00:44:56,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152504282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:44:56,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:44:56,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:44:56,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206890239] [2021-10-13 00:44:56,092 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:44:56,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:44:56,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:44:56,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:44:56,093 INFO L87 Difference]: Start difference. First operand 398 states and 559 transitions. cyclomatic complexity: 164 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:44:56,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:44:56,467 INFO L93 Difference]: Finished difference Result 1823 states and 2579 transitions. [2021-10-13 00:44:56,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:44:56,467 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1823 states and 2579 transitions. [2021-10-13 00:44:56,490 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 1262 [2021-10-13 00:44:56,509 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1823 states to 1823 states and 2579 transitions. [2021-10-13 00:44:56,510 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1823 [2021-10-13 00:44:56,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1823 [2021-10-13 00:44:56,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1823 states and 2579 transitions. [2021-10-13 00:44:56,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:44:56,518 INFO L681 BuchiCegarLoop]: Abstraction has 1823 states and 2579 transitions. [2021-10-13 00:44:56,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states and 2579 transitions. [2021-10-13 00:44:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 783. [2021-10-13 00:44:56,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 783 states have (on average 1.3882503192848021) internal successors, (1087), 782 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:44:56,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1087 transitions. [2021-10-13 00:44:56,554 INFO L704 BuchiCegarLoop]: Abstraction has 783 states and 1087 transitions. [2021-10-13 00:44:56,554 INFO L587 BuchiCegarLoop]: Abstraction has 783 states and 1087 transitions. [2021-10-13 00:44:56,554 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 00:44:56,554 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 783 states and 1087 transitions. [2021-10-13 00:44:56,561 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 554 [2021-10-13 00:44:56,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:44:56,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:44:56,564 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:44:56,564 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:44:56,565 INFO L791 eck$LassoCheckResult]: Stem: 3802#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 3679#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 3680#L506 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 3760#L514 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 3752#L1026 assume 0 != main_~tmp~10; 3746#L1002 ~switchedOnBeforeTS~0 := 0; 3747#L534 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3765#L555-1 [2021-10-13 00:44:56,570 INFO L793 eck$LassoCheckResult]: Loop: 3765#L555-1 assume !false; 4006#L423 assume test_~splverifierCounter~0 < 4; 4005#L424 test_~tmp~5 := test_#t~nondet39;havoc test_#t~nondet39; 4004#L432 assume !(0 != test_~tmp~5); 4002#L432-1 test_~tmp___0~2 := test_#t~nondet40;havoc test_#t~nondet40; 4001#L442 assume !(0 != test_~tmp___0~2); 3999#L442-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 3998#L452 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 3993#L460-1 havoc __utac_acc__Specification5_spec__2_#t~ret44;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 3992#L309 __utac_acc__Specification5_spec__2_#t~ret44 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret44;havoc __utac_acc__Specification5_spec__2_#t~ret44; 3962#L544 assume !(0 != ~pumpRunning~0); 3960#L172 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 3959#L256 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret18, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 3937#L230-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret17, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 3931#L204-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 3917#L133-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 3909#L138-3 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 3908#L358-9 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 3907#L358-11 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 3905#L364-3 processEnvironment__wrappee__highWaterSensor_#t~ret17 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret17;havoc processEnvironment__wrappee__highWaterSensor_#t~ret17; 3894#L208-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 3895#L179 havoc __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_#t~ret46, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 4012#L125 __utac_acc__Specification5_spec__3_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 4011#L555 assume 2 != __utac_acc__Specification5_spec__3_~tmp~6;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 4010#L309-1 __utac_acc__Specification5_spec__3_#t~ret46 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret46;havoc __utac_acc__Specification5_spec__3_#t~ret46; 4008#L559 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 3765#L555-1 [2021-10-13 00:44:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:44:56,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-13 00:44:56,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:44:56,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100182835] [2021-10-13 00:44:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:44:56,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:44:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:44:56,629 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:44:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:44:56,688 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:44:56,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:44:56,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2121242117, now seen corresponding path program 1 times [2021-10-13 00:44:56,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:44:56,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914868786] [2021-10-13 00:44:56,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:44:56,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:44:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:44:56,696 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:44:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:44:56,704 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:44:56,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:44:56,705 INFO L82 PathProgramCache]: Analyzing trace with hash 155030475, now seen corresponding path program 1 times [2021-10-13 00:44:56,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:44:56,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306668238] [2021-10-13 00:44:56,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:44:56,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:44:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:44:56,740 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:44:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:44:56,788 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:45:54,365 WARN L207 SmtUtils]: Spent 57.14 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-13 00:46:54,437 WARN L207 SmtUtils]: Spent 30.51 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-13 00:46:54,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 12:46:54 BoogieIcfgContainer [2021-10-13 00:46:54,605 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 00:46:54,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:46:54,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:46:54,606 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:46:54,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:44:54" (3/4) ... [2021-10-13 00:46:54,610 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-13 00:46:54,669 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:46:54,669 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:46:54,670 INFO L168 Benchmark]: Toolchain (without parser) took 122080.05 ms. Allocated memory was 121.6 MB in the beginning and 153.1 MB in the end (delta: 31.5 MB). Free memory was 88.7 MB in the beginning and 33.1 MB in the end (delta: 55.6 MB). Peak memory consumption was 85.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:46:54,671 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory was 36.0 MB in the beginning and 35.9 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:46:54,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.26 ms. Allocated memory is still 121.6 MB. Free memory was 88.4 MB in the beginning and 90.7 MB in the end (delta: -2.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:46:54,672 INFO L168 Benchmark]: Boogie Procedure Inliner took 119.54 ms. Allocated memory is still 121.6 MB. Free memory was 90.7 MB in the beginning and 86.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:46:54,672 INFO L168 Benchmark]: Boogie Preprocessor took 89.51 ms. Allocated memory is still 121.6 MB. Free memory was 86.0 MB in the beginning and 82.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:46:54,673 INFO L168 Benchmark]: RCFGBuilder took 1150.51 ms. Allocated memory is still 121.6 MB. Free memory was 82.4 MB in the beginning and 92.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 51.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:46:54,673 INFO L168 Benchmark]: BuchiAutomizer took 120047.97 ms. Allocated memory was 121.6 MB in the beginning and 153.1 MB in the end (delta: 31.5 MB). Free memory was 92.4 MB in the beginning and 36.1 MB in the end (delta: 56.3 MB). Peak memory consumption was 95.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:46:54,674 INFO L168 Benchmark]: Witness Printer took 63.52 ms. Allocated memory is still 153.1 MB. Free memory was 36.1 MB in the beginning and 33.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:46:54,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory was 36.0 MB in the beginning and 35.9 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 601.26 ms. Allocated memory is still 121.6 MB. Free memory was 88.4 MB in the beginning and 90.7 MB in the end (delta: -2.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 119.54 ms. Allocated memory is still 121.6 MB. Free memory was 90.7 MB in the beginning and 86.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.51 ms. Allocated memory is still 121.6 MB. Free memory was 86.0 MB in the beginning and 82.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1150.51 ms. Allocated memory is still 121.6 MB. Free memory was 82.4 MB in the beginning and 92.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 51.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 120047.97 ms. Allocated memory was 121.6 MB in the beginning and 153.1 MB in the end (delta: 31.5 MB). Free memory was 92.4 MB in the beginning and 36.1 MB in the end (delta: 56.3 MB). Peak memory consumption was 95.6 MB. Max. memory is 16.1 GB. * Witness Printer took 63.52 ms. Allocated memory is still 153.1 MB. Free memory was 36.1 MB in the beginning and 33.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 783 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 119.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 118.9s. Construction of modules took 0.3s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 107.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1042 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 783 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 950 SDtfs, 1462 SDslu, 1515 SDs, 0 SdLazy, 242 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 348.8ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 422]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=4380} State at position 1 is {NULL=0, NULL=4392, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54db3827=0, NULL=4380, NULL=4404, methaneLevelCritical=0, tmp=0, NULL=0, NULL=4390, NULL=0, tmp___1=0, retValue_acc=0, NULL=0, NULL=4406, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22c1ff2b=0, NULL=4399, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c407030=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6088237d=81, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@52271aee=0, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7416c6ee=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=4389, NULL=0, retValue_acc=1, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=4387, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=4396, NULL=4391, NULL=4401, tmp=0, head=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ae63de1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b7351eb=0, NULL=4397, NULL=4385, NULL=4383, tmp=0, tmp=1, tmp___0=0, NULL=0, NULL=0, NULL=4384, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73cf7a8c=0, NULL=0, NULL=0, NULL=0, tmp=0, NULL=4393, NULL=4395, switchedOnBeforeTS=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@230280f6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ee55f0a=0, NULL=0, systemActive=1, NULL=4400, \result=1, NULL=0, NULL=0, NULL=4405, \result=0, NULL=0, NULL=4381, retValue_acc=0, \result=0, tmp___0=0, NULL=4398, NULL=0, NULL=4394, retValue_acc=1, NULL=4408, NULL=4407, NULL=4382, tmp___2=81, splverifierCounter=0, NULL=0, NULL=4386, NULL=4388, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6828d612=0, NULL=0, NULL=4402, NULL=0, NULL=4403, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L160] int pumpRunning = 0; [L161] int systemActive = 1; [L528] int switchedOnBeforeTS ; [L746] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L943] int cleanupTimeShifts = 4; [L1017] int retValue_acc ; [L1018] int tmp ; [L510] int retValue_acc ; [L513] retValue_acc = 1 [L514] return (retValue_acc); [L1024] tmp = valid_product() [L1026] COND TRUE \read(tmp) [L533] switchedOnBeforeTS = 0 [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 Loop: [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND FALSE !(\read(tmp)) [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND FALSE !(\read(tmp___0)) [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp___2) [L406] systemActive = 1 [L305] int retValue_acc ; [L308] retValue_acc = pumpRunning [L309] return (retValue_acc); [L542] switchedOnBeforeTS = isPumpRunning() [L172] COND FALSE !(\read(pumpRunning)) [L179] COND TRUE \read(systemActive) [L253] int tmp ; [L256] COND FALSE !(\read(pumpRunning)) [L227] int tmp ; [L230] COND FALSE !(\read(pumpRunning)) [L201] int tmp ; [L204] COND TRUE ! pumpRunning [L350] int retValue_acc ; [L351] int tmp ; [L352] int tmp___0 ; [L130] int retValue_acc ; [L133] COND TRUE waterLevel < 2 [L134] retValue_acc = 1 [L135] return (retValue_acc); [L356] tmp = isHighWaterSensorDry() [L358] COND TRUE \read(tmp) [L359] tmp___0 = 0 [L363] retValue_acc = tmp___0 [L364] return (retValue_acc); [L206] tmp = isHighWaterLevel() [L208] COND FALSE !(\read(tmp)) [L548] int tmp ; [L549] int tmp___0 ; [L121] int retValue_acc ; [L124] retValue_acc = waterLevel [L125] return (retValue_acc); [L553] tmp = getWaterLevel() [L555] COND TRUE tmp != 2 [L305] int retValue_acc ; [L308] retValue_acc = pumpRunning [L309] return (retValue_acc); [L557] tmp___0 = isPumpRunning() [L559] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-13 00:46:54,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe5842-2d53-408f-86ca-5806e68c0f86/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...