./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7a194b3d6e079d2329a0d70eaa59b34ff3d58300de8b046ef1cd7cff7f67b94 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:10:23,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:10:23,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:10:23,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:10:23,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:10:23,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:10:23,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:10:24,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:10:24,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:10:24,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:10:24,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:10:24,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:10:24,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:10:24,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:10:24,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:10:24,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:10:24,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:10:24,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:10:24,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:10:24,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:10:24,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:10:24,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:10:24,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:10:24,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:10:24,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:10:24,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:10:24,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:10:24,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:10:24,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:10:24,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:10:24,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:10:24,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:10:24,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:10:24,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:10:24,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:10:24,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:10:24,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:10:24,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:10:24,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:10:24,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:10:24,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:10:24,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 20:10:24,148 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:10:24,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:10:24,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:10:24,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:10:24,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:10:24,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:10:24,152 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:10:24,152 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:10:24,152 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:10:24,153 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:10:24,154 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:10:24,154 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:10:24,155 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:10:24,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:10:24,156 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:10:24,156 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:10:24,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:10:24,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:10:24,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:10:24,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:10:24,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:10:24,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:10:24,158 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:10:24,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:10:24,158 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:10:24,159 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:10:24,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:10:24,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:10:24,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:10:24,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:10:24,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:10:24,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:10:24,164 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:10:24,165 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_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7a194b3d6e079d2329a0d70eaa59b34ff3d58300de8b046ef1cd7cff7f67b94 [2021-10-21 20:10:24,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:10:24,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:10:24,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:10:24,558 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:10:24,560 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:10:24,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c [2021-10-21 20:10:24,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/data/96a955b53/369651c9184942c9a8ada082aafe8ddd/FLAG20d12b51c [2021-10-21 20:10:25,330 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:10:25,331 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c [2021-10-21 20:10:25,352 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/data/96a955b53/369651c9184942c9a8ada082aafe8ddd/FLAG20d12b51c [2021-10-21 20:10:25,546 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/data/96a955b53/369651c9184942c9a8ada082aafe8ddd [2021-10-21 20:10:25,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:10:25,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:10:25,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:10:25,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:10:25,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:10:25,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:10:25" (1/1) ... [2021-10-21 20:10:25,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99162cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:25, skipping insertion in model container [2021-10-21 20:10:25,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:10:25" (1/1) ... [2021-10-21 20:10:25,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:10:25,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:10:26,040 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_52578a8a-b8ad-4b2f-9973-88f80d6ed942/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c[17915,17928] [2021-10-21 20:10:26,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:10:26,064 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:10:26,152 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_52578a8a-b8ad-4b2f-9973-88f80d6ed942/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c[17915,17928] [2021-10-21 20:10:26,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:10:26,188 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:10:26,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:26 WrapperNode [2021-10-21 20:10:26,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:10:26,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:10:26,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:10:26,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:10:26,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:26" (1/1) ... [2021-10-21 20:10:26,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:26" (1/1) ... [2021-10-21 20:10:26,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:10:26,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:10:26,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:10:26,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:10:26,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:26" (1/1) ... [2021-10-21 20:10:26,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:26" (1/1) ... [2021-10-21 20:10:26,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:26" (1/1) ... [2021-10-21 20:10:26,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:26" (1/1) ... [2021-10-21 20:10:26,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:26" (1/1) ... [2021-10-21 20:10:26,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:26" (1/1) ... [2021-10-21 20:10:26,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:26" (1/1) ... [2021-10-21 20:10:26,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:10:26,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:10:26,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:10:26,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:10:26,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:26" (1/1) ... [2021-10-21 20:10:26,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:10:26,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:10:26,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:10:26,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:10:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:10:26,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:10:26,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:10:26,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:10:27,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:10:27,755 INFO L299 CfgBuilder]: Removed 290 assume(true) statements. [2021-10-21 20:10:27,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:10:27 BoogieIcfgContainer [2021-10-21 20:10:27,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:10:27,759 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:10:27,760 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:10:27,765 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:10:27,766 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:10:27,767 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:10:25" (1/3) ... [2021-10-21 20:10:27,769 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5573f789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:10:27, skipping insertion in model container [2021-10-21 20:10:27,770 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:10:27,770 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:26" (2/3) ... [2021-10-21 20:10:27,770 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5573f789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:10:27, skipping insertion in model container [2021-10-21 20:10:27,770 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:10:27,771 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:10:27" (3/3) ... [2021-10-21 20:10:27,772 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2021-10-21 20:10:27,839 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:10:27,839 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:10:27,839 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:10:27,839 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:10:27,839 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:10:27,840 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:10:27,840 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:10:27,840 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:10:27,877 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 195 states, 194 states have (on average 1.5309278350515463) internal successors, (297), 194 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:10:27,955 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2021-10-21 20:10:27,957 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:10:27,957 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:10:27,971 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:27,971 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:27,971 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:10:27,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 195 states, 194 states have (on average 1.5309278350515463) internal successors, (297), 194 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:10:27,998 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2021-10-21 20:10:28,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:10:28,002 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:10:28,005 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:28,006 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:28,020 INFO L791 eck$LassoCheckResult]: Stem: 186#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(110, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 3 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(80, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(117, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(109, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(112, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(32, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string61.base, #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 1 + #t~string61.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 116#L-1true havoc main_#res;havoc main_#t~ret72, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 172#L679true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 30#L687true main_#t~ret72 := valid_product_#res;main_~tmp~10 := main_#t~ret72;havoc main_#t~ret72; 16#L894true assume 0 != main_~tmp~10; 47#L870true ~switchedOnBeforeTS~0 := 0; 6#L768true havoc test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 127#L789-1true [2021-10-21 20:10:28,022 INFO L793 eck$LassoCheckResult]: Loop: 127#L789-1true assume !false; 179#L706true assume test_~splverifierCounter~0 < 4; 148#L707true test_~tmp~8 := test_#t~nondet65;havoc test_#t~nondet65; 10#L715true assume !(0 != test_~tmp~8); 156#L715-1true test_~tmp___0~2 := test_#t~nondet66;havoc test_#t~nondet66; 7#L725true assume !(0 != test_~tmp___0~2); 146#L725-1true test_~tmp___2~0 := test_#t~nondet67;havoc test_#t~nondet67; 193#L735true assume 0 != test_~tmp___2~0; 147#L741-2true havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 98#L575true __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 99#L778true assume !(0 != ~pumpRunning~0); 162#L438true assume !(0 != ~systemActive~0); 23#L445true havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 135#L992true __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 37#L789true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 127#L789-1true [2021-10-21 20:10:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:28,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-21 20:10:28,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:28,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153793785] [2021-10-21 20:10:28,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:28,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:28,424 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:10:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:28,635 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:10:28,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:28,640 INFO L82 PathProgramCache]: Analyzing trace with hash 99399404, now seen corresponding path program 1 times [2021-10-21 20:10:28,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:28,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676028842] [2021-10-21 20:10:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:28,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:28,660 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:10:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:28,680 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:10:28,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:28,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2033424614, now seen corresponding path program 1 times [2021-10-21 20:10:28,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:28,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884946487] [2021-10-21 20:10:28,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:28,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:28,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:10:28,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884946487] [2021-10-21 20:10:28,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884946487] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:28,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:28,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:10:28,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117954908] [2021-10-21 20:10:29,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:10:29,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:10:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:10:29,108 INFO L87 Difference]: Start difference. First operand has 195 states, 194 states have (on average 1.5309278350515463) internal successors, (297), 194 states have internal predecessors, (297), 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 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:10:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:29,382 INFO L93 Difference]: Finished difference Result 195 states and 286 transitions. [2021-10-21 20:10:29,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:10:29,387 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195 states and 286 transitions. [2021-10-21 20:10:29,402 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2021-10-21 20:10:29,418 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195 states to 188 states and 279 transitions. [2021-10-21 20:10:29,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 188 [2021-10-21 20:10:29,422 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2021-10-21 20:10:29,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 188 states and 279 transitions. [2021-10-21 20:10:29,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:10:29,428 INFO L681 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2021-10-21 20:10:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states and 279 transitions. [2021-10-21 20:10:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-10-21 20:10:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 188 states have (on average 1.4840425531914894) internal successors, (279), 187 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:10:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 279 transitions. [2021-10-21 20:10:29,500 INFO L704 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2021-10-21 20:10:29,501 INFO L587 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2021-10-21 20:10:29,501 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:10:29,501 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 279 transitions. [2021-10-21 20:10:29,506 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2021-10-21 20:10:29,507 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:10:29,507 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:10:29,509 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:29,509 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:29,510 INFO L791 eck$LassoCheckResult]: Stem: 592#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(110, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 3 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(80, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(117, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(109, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(112, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(32, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string61.base, #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 1 + #t~string61.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 494#L-1 havoc main_#res;havoc main_#t~ret72, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 495#L679 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 519#L687 main_#t~ret72 := valid_product_#res;main_~tmp~10 := main_#t~ret72;havoc main_#t~ret72; 473#L894 assume 0 != main_~tmp~10; 474#L870 ~switchedOnBeforeTS~0 := 0; 429#L768 havoc test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 430#L789-1 [2021-10-21 20:10:29,510 INFO L793 eck$LassoCheckResult]: Loop: 430#L789-1 assume !false; 522#L706 assume test_~splverifierCounter~0 < 4; 555#L707 test_~tmp~8 := test_#t~nondet65;havoc test_#t~nondet65; 444#L715 assume !(0 != test_~tmp~8); 446#L715-1 test_~tmp___0~2 := test_#t~nondet66;havoc test_#t~nondet66; 433#L725 assume !(0 != test_~tmp___0~2); 435#L725-1 test_~tmp___2~0 := test_#t~nondet67;havoc test_#t~nondet67; 551#L735 assume 0 != test_~tmp___2~0; 552#L741-2 havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 449#L575 __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 450#L778 assume !(0 != ~pumpRunning~0); 451#L438 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 576#L522 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret43, processEnvironment__wrappee__lowWaterSensor_~tmp~4;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~4; 516#L496-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret42, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 518#L470-3 assume !(0 == ~pumpRunning~0); 456#L445 havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 493#L992 __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 536#L789 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 430#L789-1 [2021-10-21 20:10:29,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:29,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-21 20:10:29,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:29,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865737959] [2021-10-21 20:10:29,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:29,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:29,632 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:10:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:29,736 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:10:29,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:29,737 INFO L82 PathProgramCache]: Analyzing trace with hash -416203938, now seen corresponding path program 1 times [2021-10-21 20:10:29,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:29,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765804433] [2021-10-21 20:10:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:29,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:29,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:10:29,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765804433] [2021-10-21 20:10:29,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765804433] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:29,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:29,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:10:29,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496311350] [2021-10-21 20:10:29,789 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:10:29,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:10:29,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:10:29,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:10:29,791 INFO L87 Difference]: Start difference. First operand 188 states and 279 transitions. cyclomatic complexity: 93 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) [2021-10-21 20:10:29,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:29,973 INFO L93 Difference]: Finished difference Result 201 states and 278 transitions. [2021-10-21 20:10:29,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:10:29,975 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 201 states and 278 transitions. [2021-10-21 20:10:29,978 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 138 [2021-10-21 20:10:29,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 201 states to 201 states and 278 transitions. [2021-10-21 20:10:29,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 201 [2021-10-21 20:10:29,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 201 [2021-10-21 20:10:29,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 201 states and 278 transitions. [2021-10-21 20:10:29,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:10:29,992 INFO L681 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-10-21 20:10:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states and 278 transitions. [2021-10-21 20:10:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-10-21 20:10:30,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 201 states have (on average 1.3830845771144278) internal successors, (278), 200 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:10:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2021-10-21 20:10:30,014 INFO L704 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-10-21 20:10:30,014 INFO L587 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-10-21 20:10:30,014 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:10:30,014 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 278 transitions. [2021-10-21 20:10:30,016 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 138 [2021-10-21 20:10:30,017 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:10:30,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:10:30,023 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:30,024 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] [2021-10-21 20:10:30,024 INFO L791 eck$LassoCheckResult]: Stem: 958#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(110, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 3 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(80, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(117, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(109, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(112, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(32, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string61.base, #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 1 + #t~string61.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 869#L-1 havoc main_#res;havoc main_#t~ret72, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 870#L679 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 889#L687 main_#t~ret72 := valid_product_#res;main_~tmp~10 := main_#t~ret72;havoc main_#t~ret72; 859#L894 assume 0 != main_~tmp~10; 860#L870 ~switchedOnBeforeTS~0 := 0; 818#L768 havoc test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 819#L789-1 [2021-10-21 20:10:30,024 INFO L793 eck$LassoCheckResult]: Loop: 819#L789-1 assume !false; 890#L706 assume test_~splverifierCounter~0 < 4; 920#L707 test_~tmp~8 := test_#t~nondet65;havoc test_#t~nondet65; 835#L715 assume !(0 != test_~tmp~8); 837#L715-1 test_~tmp___0~2 := test_#t~nondet66;havoc test_#t~nondet66; 825#L725 assume !(0 != test_~tmp___0~2); 827#L725-1 test_~tmp___2~0 := test_#t~nondet67;havoc test_#t~nondet67; 918#L735 assume 0 != test_~tmp___2~0; 919#L741-2 havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 840#L575 __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 841#L778 assume !(0 != ~pumpRunning~0); 842#L438 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 937#L522 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret43, processEnvironment__wrappee__lowWaterSensor_~tmp~4;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~4; 887#L496-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret42, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 888#L470-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret62, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 900#L1000-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 901#L1005-3 isHighWaterLevel_#t~ret62 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret62;havoc isHighWaterLevel_#t~ret62; 935#L624-9 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~0 := 0; 904#L624-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 905#L630-3 processEnvironment__wrappee__highWaterSensor_#t~ret42 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret42;havoc processEnvironment__wrappee__highWaterSensor_#t~ret42; 940#L474-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 847#L445 havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 868#L992 __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 907#L789 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 819#L789-1 [2021-10-21 20:10:30,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:30,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-21 20:10:30,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:30,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381869989] [2021-10-21 20:10:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:30,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:30,118 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:10:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:30,197 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:10:30,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:30,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1258364778, now seen corresponding path program 1 times [2021-10-21 20:10:30,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:30,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369557406] [2021-10-21 20:10:30,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:30,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:30,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:10:30,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369557406] [2021-10-21 20:10:30,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369557406] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:30,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:30,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:10:30,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786759670] [2021-10-21 20:10:30,240 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:10:30,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:10:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:10:30,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:10:30,242 INFO L87 Difference]: Start difference. First operand 201 states and 278 transitions. cyclomatic complexity: 79 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) [2021-10-21 20:10:30,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:30,576 INFO L93 Difference]: Finished difference Result 577 states and 781 transitions. [2021-10-21 20:10:30,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:10:30,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 577 states and 781 transitions. [2021-10-21 20:10:30,584 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 367 [2021-10-21 20:10:30,591 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 577 states to 577 states and 781 transitions. [2021-10-21 20:10:30,592 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 577 [2021-10-21 20:10:30,593 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 577 [2021-10-21 20:10:30,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 577 states and 781 transitions. [2021-10-21 20:10:30,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:10:30,595 INFO L681 BuchiCegarLoop]: Abstraction has 577 states and 781 transitions. [2021-10-21 20:10:30,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states and 781 transitions. [2021-10-21 20:10:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 395. [2021-10-21 20:10:30,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 395 states have (on average 1.3468354430379748) internal successors, (532), 394 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:10:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 532 transitions. [2021-10-21 20:10:30,626 INFO L704 BuchiCegarLoop]: Abstraction has 395 states and 532 transitions. [2021-10-21 20:10:30,626 INFO L587 BuchiCegarLoop]: Abstraction has 395 states and 532 transitions. [2021-10-21 20:10:30,627 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 20:10:30,627 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 395 states and 532 transitions. [2021-10-21 20:10:30,630 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 276 [2021-10-21 20:10:30,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:10:30,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:10:30,632 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:30,632 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] [2021-10-21 20:10:30,645 INFO L791 eck$LassoCheckResult]: Stem: 1762#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(110, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 3 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(80, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(117, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(109, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(112, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(32, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string61.base, #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 1 + #t~string61.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1663#L-1 havoc main_#res;havoc main_#t~ret72, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 1664#L679 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1682#L687 main_#t~ret72 := valid_product_#res;main_~tmp~10 := main_#t~ret72;havoc main_#t~ret72; 1653#L894 assume 0 != main_~tmp~10; 1654#L870 ~switchedOnBeforeTS~0 := 0; 1615#L768 havoc test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1616#L789-1 [2021-10-21 20:10:30,645 INFO L793 eck$LassoCheckResult]: Loop: 1616#L789-1 assume !false; 1683#L706 assume test_~splverifierCounter~0 < 4; 1714#L707 test_~tmp~8 := test_#t~nondet65;havoc test_#t~nondet65; 1633#L715 assume !(0 != test_~tmp~8); 1635#L715-1 test_~tmp___0~2 := test_#t~nondet66;havoc test_#t~nondet66; 1730#L725 assume !(0 != test_~tmp___0~2); 1986#L725-1 test_~tmp___2~0 := test_#t~nondet67;havoc test_#t~nondet67; 1985#L735 assume 0 != test_~tmp___2~0; 1983#L741-2 havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 1982#L575 __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 1980#L778 assume !(0 != ~pumpRunning~0); 1953#L438 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1749#L522 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret43, processEnvironment__wrappee__lowWaterSensor_~tmp~4;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~4; 1680#L496-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret42, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 1681#L470-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret62, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 1693#L1000-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1694#L1005-3 isHighWaterLevel_#t~ret62 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret62;havoc isHighWaterLevel_#t~ret62; 1733#L624-9 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~0 := 0; 1697#L624-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1698#L630-3 processEnvironment__wrappee__highWaterSensor_#t~ret42 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret42;havoc processEnvironment__wrappee__highWaterSensor_#t~ret42; 1739#L474-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 1641#L445 havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 1662#L992 __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 1700#L789 assume 2 != __utac_acc__Specification5_spec__3_~tmp~9;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 1658#L575-1 __utac_acc__Specification5_spec__3_#t~ret71 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret71;havoc __utac_acc__Specification5_spec__3_#t~ret71; 1659#L793 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 1616#L789-1 [2021-10-21 20:10:30,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:30,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-21 20:10:30,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:30,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451708581] [2021-10-21 20:10:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:30,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:30,711 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:10:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:30,816 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:10:30,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:30,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1892234555, now seen corresponding path program 1 times [2021-10-21 20:10:30,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:30,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761908275] [2021-10-21 20:10:30,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:30,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:30,833 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:10:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:30,844 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:10:30,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:30,861 INFO L82 PathProgramCache]: Analyzing trace with hash 436521099, now seen corresponding path program 1 times [2021-10-21 20:10:30,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:30,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13062765] [2021-10-21 20:10:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:30,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:30,942 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:10:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:31,019 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:11:48,991 WARN L207 SmtUtils]: Spent 1.29 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-21 20:13:03,834 WARN L207 SmtUtils]: Spent 33.00 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-21 20:13:04,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:13:04 BoogieIcfgContainer [2021-10-21 20:13:04,047 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:13:04,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:13:04,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:13:04,049 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:13:04,049 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:10:27" (3/4) ... [2021-10-21 20:13:04,066 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 20:13:04,126 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:13:04,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:13:04,128 INFO L168 Benchmark]: Toolchain (without parser) took 158576.64 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 46.0 MB in the beginning and 75.7 MB in the end (delta: -29.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:04,128 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory was 63.1 MB in the beginning and 63.0 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:13:04,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.16 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 45.8 MB in the beginning and 67.4 MB in the end (delta: -21.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:04,130 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.50 ms. Allocated memory is still 100.7 MB. Free memory was 67.4 MB in the beginning and 62.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:04,130 INFO L168 Benchmark]: Boogie Preprocessor took 102.45 ms. Allocated memory is still 100.7 MB. Free memory was 62.5 MB in the beginning and 59.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:04,131 INFO L168 Benchmark]: RCFGBuilder took 1360.19 ms. Allocated memory is still 100.7 MB. Free memory was 59.0 MB in the beginning and 50.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:04,131 INFO L168 Benchmark]: BuchiAutomizer took 156288.26 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 50.4 MB in the beginning and 78.7 MB in the end (delta: -28.4 MB). Peak memory consumption was 50.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:04,132 INFO L168 Benchmark]: Witness Printer took 78.61 ms. Allocated memory is still 123.7 MB. Free memory was 78.7 MB in the beginning and 75.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:04,135 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory was 63.1 MB in the beginning and 63.0 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 636.16 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 45.8 MB in the beginning and 67.4 MB in the end (delta: -21.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.50 ms. Allocated memory is still 100.7 MB. Free memory was 67.4 MB in the beginning and 62.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.45 ms. Allocated memory is still 100.7 MB. Free memory was 62.5 MB in the beginning and 59.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1360.19 ms. Allocated memory is still 100.7 MB. Free memory was 59.0 MB in the beginning and 50.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 156288.26 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 50.4 MB in the beginning and 78.7 MB in the end (delta: -28.4 MB). Peak memory consumption was 50.2 MB. Max. memory is 16.1 GB. * Witness Printer took 78.61 ms. Allocated memory is still 123.7 MB. Free memory was 78.7 MB in the beginning and 75.7 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 6 locations. The remainder module has 395 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 156.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 154.9s. Construction of modules took 0.4s. 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 102.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 182 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 395 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 845 SDtfs, 1995 SDslu, 843 SDs, 0 SdLazy, 169 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 426.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 705]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=8160} State at position 1 is {retValue_acc=1, NULL=0, NULL=8176, NULL=8160, methaneLevelCritical=0, NULL=8171, NULL=0, retValue_acc=0, tmp=0, tmp___1=0, NULL=8174, NULL=0, NULL=8173, NULL=8177, cleanupTimeShifts=4, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b0102a2=0, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e085791=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15917142=0, NULL=8182, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b29b274=0, NULL=8164, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=8165, NULL=0, NULL=0, tmp___0=0, NULL=8161, NULL=8185, tmp=1, NULL=8188, NULL=8167, head=0, NULL=0, NULL=0, tmp=0, NULL=8184, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11ee1c95=0, NULL=0, NULL=8181, retValue_acc=0, NULL=8175, NULL=0, tmp=1, tmp___0=0, NULL=8168, tmp=0, NULL=0, NULL=8179, tmp=0, NULL=8170, switchedOnBeforeTS=0, NULL=8187, \result=0, NULL=8169, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f809360=0, NULL=8162, \result=0, NULL=8183, NULL=0, NULL=0, NULL=0, NULL=8178, NULL=8166, \result=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c92f00d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67f7266c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f927e73=55, NULL=0, NULL=8172, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69e649f3=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7cce4d95=0, NULL=8180, retValue_acc=1, tmp___2=55, splverifierCounter=0, NULL=0, NULL=0, NULL=8186, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ec5e5e1=0, NULL=8163, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L426] int pumpRunning = 0; [L427] int systemActive = 1; [L762] int switchedOnBeforeTS ; [L811] int cleanupTimeShifts = 4; [L917] int waterLevel = 1; [L918] int methaneLevelCritical = 0; [L885] int retValue_acc ; [L886] int tmp ; [L683] int retValue_acc ; [L686] retValue_acc = 1 [L687] return (retValue_acc); [L892] tmp = valid_product() [L894] COND TRUE \read(tmp) [L767] switchedOnBeforeTS = 0 [L696] int splverifierCounter ; [L697] int tmp ; [L698] int tmp___0 ; [L699] int tmp___1 ; [L700] int tmp___2 ; [L703] splverifierCounter = 0 Loop: [L705] COND TRUE 1 [L707] COND TRUE splverifierCounter < 4 [L713] tmp = __VERIFIER_nondet_int() [L715] COND FALSE !(\read(tmp)) [L723] tmp___0 = __VERIFIER_nondet_int() [L725] COND FALSE !(\read(tmp___0)) [L733] tmp___2 = __VERIFIER_nondet_int() [L735] COND TRUE \read(tmp___2) [L571] int retValue_acc ; [L574] retValue_acc = pumpRunning [L575] return (retValue_acc); [L776] switchedOnBeforeTS = isPumpRunning() [L438] COND FALSE !(\read(pumpRunning)) [L445] COND TRUE \read(systemActive) [L519] int tmp ; [L522] COND FALSE !(\read(pumpRunning)) [L493] int tmp ; [L496] COND FALSE !(\read(pumpRunning)) [L467] int tmp ; [L470] COND TRUE ! pumpRunning [L616] int retValue_acc ; [L617] int tmp ; [L618] int tmp___0 ; [L997] int retValue_acc ; [L1000] COND TRUE waterLevel < 2 [L1001] retValue_acc = 1 [L1002] return (retValue_acc); [L622] tmp = isHighWaterSensorDry() [L624] COND TRUE \read(tmp) [L625] tmp___0 = 0 [L629] retValue_acc = tmp___0 [L630] return (retValue_acc); [L472] tmp = isHighWaterLevel() [L474] COND FALSE !(\read(tmp)) [L782] int tmp ; [L783] int tmp___0 ; [L988] int retValue_acc ; [L991] retValue_acc = waterLevel [L992] return (retValue_acc); [L787] tmp = getWaterLevel() [L789] COND TRUE tmp != 2 [L571] int retValue_acc ; [L574] retValue_acc = pumpRunning [L575] return (retValue_acc); [L791] tmp___0 = isPumpRunning() [L793] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:13:04,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52578a8a-b8ad-4b2f-9973-88f80d6ed942/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...