./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_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_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/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_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/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_f9b3661a-2a15-4a4f-abd9-977795112b05/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 e91d5c860cfea17112af53939b2fffb1e4c536355098377ab18c754994d1bc2b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 20:05:37,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:05:37,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:05:37,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:05:37,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:05:37,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:05:37,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:05:37,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:05:37,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:05:37,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:05:37,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:05:37,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:05:37,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:05:37,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:05:37,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:05:37,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:05:37,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:05:37,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:05:37,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:05:37,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:05:37,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:05:37,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:05:37,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:05:37,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:05:37,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:05:37,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:05:37,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:05:37,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:05:37,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:05:37,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:05:37,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:05:37,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:05:37,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:05:37,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:05:37,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:05:37,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:05:37,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:05:37,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:05:37,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:05:37,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:05:37,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:05:37,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 20:05:37,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:05:37,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:05:37,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:05:37,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:05:37,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:05:37,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:05:37,656 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:05:37,656 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:05:37,657 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:05:37,657 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:05:37,658 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:05:37,658 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:05:37,659 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:05:37,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:05:37,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:05:37,660 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:05:37,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:05:37,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:05:37,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:05:37,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:05:37,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:05:37,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:05:37,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:05:37,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:05:37,662 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:05:37,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:05:37,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:05:37,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:05:37,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:05:37,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:05:37,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:05:37,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:05:37,666 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:05:37,666 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_f9b3661a-2a15-4a4f-abd9-977795112b05/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e91d5c860cfea17112af53939b2fffb1e4c536355098377ab18c754994d1bc2b [2021-10-21 20:05:38,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:05:38,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:05:38,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:05:38,059 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:05:38,061 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:05:38,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c [2021-10-21 20:05:38,159 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/data/7bd5ae30a/240a95ba2e354590a30be03f639d829e/FLAG653b435d2 [2021-10-21 20:05:38,792 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:05:38,793 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c [2021-10-21 20:05:38,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/data/7bd5ae30a/240a95ba2e354590a30be03f639d829e/FLAG653b435d2 [2021-10-21 20:05:39,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/data/7bd5ae30a/240a95ba2e354590a30be03f639d829e [2021-10-21 20:05:39,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:05:39,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:05:39,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:05:39,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:05:39,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:05:39,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:05:39" (1/1) ... [2021-10-21 20:05:39,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7645a14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39, skipping insertion in model container [2021-10-21 20:05:39,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:05:39" (1/1) ... [2021-10-21 20:05:39,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:05:39,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:05:39,523 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_f9b3661a-2a15-4a4f-abd9-977795112b05/sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c[15987,16000] [2021-10-21 20:05:39,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:05:39,552 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:05:39,627 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_f9b3661a-2a15-4a4f-abd9-977795112b05/sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c[15987,16000] [2021-10-21 20:05:39,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:05:39,665 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:05:39,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39 WrapperNode [2021-10-21 20:05:39,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:05:39,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:05:39,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:05:39,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:05:39,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39" (1/1) ... [2021-10-21 20:05:39,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39" (1/1) ... [2021-10-21 20:05:39,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:05:39,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:05:39,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:05:39,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:05:39,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39" (1/1) ... [2021-10-21 20:05:39,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39" (1/1) ... [2021-10-21 20:05:39,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39" (1/1) ... [2021-10-21 20:05:39,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39" (1/1) ... [2021-10-21 20:05:39,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39" (1/1) ... [2021-10-21 20:05:39,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39" (1/1) ... [2021-10-21 20:05:39,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39" (1/1) ... [2021-10-21 20:05:39,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:05:39,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:05:39,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:05:39,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:05:39,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39" (1/1) ... [2021-10-21 20:05:39,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:05:39,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:05:39,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:05:40,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:05:40,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:05:40,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:05:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:05:40,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:05:41,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:05:41,348 INFO L299 CfgBuilder]: Removed 276 assume(true) statements. [2021-10-21 20:05:41,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:05:41 BoogieIcfgContainer [2021-10-21 20:05:41,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:05:41,352 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:05:41,352 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:05:41,356 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:05:41,362 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:05:41,363 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:05:39" (1/3) ... [2021-10-21 20:05:41,364 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@630661fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:05:41, skipping insertion in model container [2021-10-21 20:05:41,365 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:05:41,365 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:39" (2/3) ... [2021-10-21 20:05:41,366 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@630661fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:05:41, skipping insertion in model container [2021-10-21 20:05:41,366 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:05:41,366 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:05:41" (3/3) ... [2021-10-21 20:05:41,368 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product53.cil.c [2021-10-21 20:05:41,440 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:05:41,440 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:05:41,440 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:05:41,440 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:05:41,440 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:05:41,440 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:05:41,440 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:05:41,441 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:05:41,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 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 20:05:41,518 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 121 [2021-10-21 20:05:41,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:05:41,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:05:41,528 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:05:41,528 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:05:41,529 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:05:41,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 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 20:05:41,543 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 121 [2021-10-21 20:05:41,544 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:05:41,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:05:41,545 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:05:41,546 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:05:41,551 INFO L791 eck$LassoCheckResult]: Stem: 164#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~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 51#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 75#L743true 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; 31#L751true main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 141#L977true assume 0 != main_~tmp~10; 181#L954true havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 186#L877-1true [2021-10-21 20:05:41,552 INFO L793 eck$LassoCheckResult]: Loop: 186#L877-1true assume !false; 180#L431true assume test_~splverifierCounter~0 < 4; 115#L432true test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 131#L440true assume !(0 != test_~tmp~3); 38#L440-1true test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 120#L450true assume !(0 != test_~tmp___0~0); 60#L450-1true test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 78#L460true assume 0 != test_~tmp___2~0; 108#L466-2true assume !(0 != ~pumpRunning~0); 52#L502true assume !(0 != ~systemActive~0); 66#L509true havoc __utac_acc__Specification4_spec__1_#t~ret79, __utac_acc__Specification4_spec__1_#t~ret80, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 102#L841true __utac_acc__Specification4_spec__1_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret79;havoc __utac_acc__Specification4_spec__1_#t~ret79; 29#L877true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 186#L877-1true [2021-10-21 20:05:41,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:41,559 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-21 20:05:41,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:41,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674441383] [2021-10-21 20:05:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:41,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:41,867 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:05:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:42,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:05:42,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:42,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1676481278, now seen corresponding path program 1 times [2021-10-21 20:05:42,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:42,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310426843] [2021-10-21 20:05:42,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:42,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:42,205 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:05:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:42,217 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:05:42,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:42,219 INFO L82 PathProgramCache]: Analyzing trace with hash 37797660, now seen corresponding path program 1 times [2021-10-21 20:05:42,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:42,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697929949] [2021-10-21 20:05:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:42,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:42,416 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 20:05:42,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:05:42,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697929949] [2021-10-21 20:05:42,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697929949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:05:42,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:05:42,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:05:42,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105236399] [2021-10-21 20:05:42,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:05:42,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:05:42,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:05:42,617 INFO L87 Difference]: Start difference. First operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 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 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 20:05:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:05:42,814 INFO L93 Difference]: Finished difference Result 186 states and 274 transitions. [2021-10-21 20:05:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:05:42,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 186 states and 274 transitions. [2021-10-21 20:05:42,824 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 119 [2021-10-21 20:05:42,832 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 186 states to 179 states and 267 transitions. [2021-10-21 20:05:42,834 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 179 [2021-10-21 20:05:42,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 179 [2021-10-21 20:05:42,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 179 states and 267 transitions. [2021-10-21 20:05:42,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:05:42,838 INFO L681 BuchiCegarLoop]: Abstraction has 179 states and 267 transitions. [2021-10-21 20:05:42,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states and 267 transitions. [2021-10-21 20:05:42,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-10-21 20:05:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 179 states have (on average 1.4916201117318435) internal successors, (267), 178 states have internal predecessors, (267), 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 20:05:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 267 transitions. [2021-10-21 20:05:42,885 INFO L704 BuchiCegarLoop]: Abstraction has 179 states and 267 transitions. [2021-10-21 20:05:42,885 INFO L587 BuchiCegarLoop]: Abstraction has 179 states and 267 transitions. [2021-10-21 20:05:42,885 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:05:42,885 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 179 states and 267 transitions. [2021-10-21 20:05:42,890 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 119 [2021-10-21 20:05:42,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:05:42,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:05:42,891 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:05:42,891 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:05:42,892 INFO L791 eck$LassoCheckResult]: Stem: 566#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~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 470#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 471#L743 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; 441#L751 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 442#L977 assume 0 != main_~tmp~10; 557#L954 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 438#L877-1 [2021-10-21 20:05:42,892 INFO L793 eck$LassoCheckResult]: Loop: 438#L877-1 assume !false; 568#L431 assume test_~splverifierCounter~0 < 4; 539#L432 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 540#L440 assume !(0 != test_~tmp~3); 454#L440-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 455#L450 assume !(0 != test_~tmp___0~0); 482#L450-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 483#L460 assume 0 != test_~tmp___2~0; 505#L466-2 assume !(0 != ~pumpRunning~0); 404#L502 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret48, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 472#L586 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret47, processEnvironment__wrappee__lowWaterSensor_~tmp~5;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5; 555#L560-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret46, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 532#L534-3 assume !(0 == ~pumpRunning~0); 393#L509 havoc __utac_acc__Specification4_spec__1_#t~ret79, __utac_acc__Specification4_spec__1_#t~ret80, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 490#L841 __utac_acc__Specification4_spec__1_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret79;havoc __utac_acc__Specification4_spec__1_#t~ret79; 436#L877 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 438#L877-1 [2021-10-21 20:05:42,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:42,893 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-21 20:05:42,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:42,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177324495] [2021-10-21 20:05:42,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:42,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:42,956 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:05:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:43,065 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:05:43,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:43,066 INFO L82 PathProgramCache]: Analyzing trace with hash -270276490, now seen corresponding path program 1 times [2021-10-21 20:05:43,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:43,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41253071] [2021-10-21 20:05:43,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:43,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:43,104 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 20:05:43,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:05:43,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41253071] [2021-10-21 20:05:43,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41253071] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:05:43,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:05:43,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:05:43,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974615759] [2021-10-21 20:05:43,109 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:05:43,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:05:43,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:05:43,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:05:43,112 INFO L87 Difference]: Start difference. First operand 179 states and 267 transitions. cyclomatic complexity: 90 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 20:05:43,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:05:43,308 INFO L93 Difference]: Finished difference Result 184 states and 255 transitions. [2021-10-21 20:05:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:05:43,309 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 255 transitions. [2021-10-21 20:05:43,317 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-10-21 20:05:43,328 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 184 states and 255 transitions. [2021-10-21 20:05:43,328 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 184 [2021-10-21 20:05:43,331 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 184 [2021-10-21 20:05:43,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 184 states and 255 transitions. [2021-10-21 20:05:43,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:05:43,336 INFO L681 BuchiCegarLoop]: Abstraction has 184 states and 255 transitions. [2021-10-21 20:05:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states and 255 transitions. [2021-10-21 20:05:43,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-10-21 20:05:43,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 184 states have (on average 1.3858695652173914) internal successors, (255), 183 states have internal predecessors, (255), 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 20:05:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 255 transitions. [2021-10-21 20:05:43,347 INFO L704 BuchiCegarLoop]: Abstraction has 184 states and 255 transitions. [2021-10-21 20:05:43,347 INFO L587 BuchiCegarLoop]: Abstraction has 184 states and 255 transitions. [2021-10-21 20:05:43,348 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:05:43,348 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 255 transitions. [2021-10-21 20:05:43,350 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-10-21 20:05:43,350 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:05:43,350 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:05:43,351 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:05:43,351 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] [2021-10-21 20:05:43,352 INFO L791 eck$LassoCheckResult]: Stem: 906#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~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 822#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 823#L743 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; 802#L751 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 803#L977 assume 0 != main_~tmp~10; 896#L954 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 799#L877-1 [2021-10-21 20:05:43,352 INFO L793 eck$LassoCheckResult]: Loop: 799#L877-1 assume !false; 909#L431 assume test_~splverifierCounter~0 < 4; 880#L432 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 881#L440 assume !(0 != test_~tmp~3); 807#L440-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 808#L450 assume !(0 != test_~tmp___0~0); 877#L450-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 856#L460 assume 0 != test_~tmp___2~0; 857#L466-2 assume !(0 != ~pumpRunning~0); 824#L502 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret48, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 825#L586 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret47, processEnvironment__wrappee__lowWaterSensor_~tmp~5;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5; 894#L560-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret46, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 875#L534-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret66, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 775#L849-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 776#L854-3 isHighWaterLevel_#t~ret66 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret66;havoc isHighWaterLevel_#t~ret66; 886#L688-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 866#L688-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 787#L694-3 processEnvironment__wrappee__highWaterSensor_#t~ret46 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret46;havoc processEnvironment__wrappee__highWaterSensor_#t~ret46; 759#L538-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 761#L509 havoc __utac_acc__Specification4_spec__1_#t~ret79, __utac_acc__Specification4_spec__1_#t~ret80, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 842#L841 __utac_acc__Specification4_spec__1_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret79;havoc __utac_acc__Specification4_spec__1_#t~ret79; 797#L877 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 799#L877-1 [2021-10-21 20:05:43,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:43,353 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-21 20:05:43,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:43,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910481508] [2021-10-21 20:05:43,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:43,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:43,402 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:05:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:43,486 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:05:43,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:43,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1151634370, now seen corresponding path program 1 times [2021-10-21 20:05:43,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:43,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91739020] [2021-10-21 20:05:43,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:43,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:43,495 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:05:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:43,505 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:05:43,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:43,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1890027800, now seen corresponding path program 1 times [2021-10-21 20:05:43,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:43,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716006243] [2021-10-21 20:05:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:43,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:43,550 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:05:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:43,609 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:06:53,758 WARN L207 SmtUtils]: Spent 1.16 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-21 20:08:06,527 WARN L207 SmtUtils]: Spent 35.95 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-21 20:08:06,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:08:06 BoogieIcfgContainer [2021-10-21 20:08:06,767 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:08:06,768 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:08:06,769 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:08:06,769 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:08:06,770 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:05:41" (3/4) ... [2021-10-21 20:08:06,774 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 20:08:06,866 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:08:06,866 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:08:06,868 INFO L168 Benchmark]: Toolchain (without parser) took 147765.28 ms. Allocated memory was 100.7 MB in the beginning and 169.9 MB in the end (delta: 69.2 MB). Free memory was 66.7 MB in the beginning and 91.5 MB in the end (delta: -24.9 MB). Peak memory consumption was 44.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:06,868 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 53.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:08:06,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.71 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 67.0 MB in the end (delta: -301.1 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:06,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 158.60 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 62.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:06,870 INFO L168 Benchmark]: Boogie Preprocessor took 101.95 ms. Allocated memory is still 100.7 MB. Free memory was 62.4 MB in the beginning and 58.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:06,871 INFO L168 Benchmark]: RCFGBuilder took 1421.46 ms. Allocated memory was 100.7 MB in the beginning and 136.3 MB in the end (delta: 35.7 MB). Free memory was 58.9 MB in the beginning and 73.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:06,872 INFO L168 Benchmark]: BuchiAutomizer took 145415.75 ms. Allocated memory was 136.3 MB in the beginning and 169.9 MB in the end (delta: 33.6 MB). Free memory was 73.7 MB in the beginning and 93.6 MB in the end (delta: -19.9 MB). Peak memory consumption was 70.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:06,873 INFO L168 Benchmark]: Witness Printer took 97.86 ms. Allocated memory is still 169.9 MB. Free memory was 93.6 MB in the beginning and 91.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:06,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 53.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 541.71 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 67.0 MB in the end (delta: -301.1 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 158.60 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 62.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 101.95 ms. Allocated memory is still 100.7 MB. Free memory was 62.4 MB in the beginning and 58.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1421.46 ms. Allocated memory was 100.7 MB in the beginning and 136.3 MB in the end (delta: 35.7 MB). Free memory was 58.9 MB in the beginning and 73.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 145415.75 ms. Allocated memory was 136.3 MB in the beginning and 169.9 MB in the end (delta: 33.6 MB). Free memory was 73.7 MB in the beginning and 93.6 MB in the end (delta: -19.9 MB). Peak memory consumption was 70.5 MB. Max. memory is 16.1 GB. * Witness Printer took 97.86 ms. Allocated memory is still 169.9 MB. Free memory was 93.6 MB in the beginning and 91.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 184 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 145.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 144.6s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 40.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 184 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 472 SDtfs, 1207 SDslu, 77 SDs, 0 SdLazy, 50 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 226.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 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: 430]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=28309, NULL=0, retValue_acc=1, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31cd1de7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@519c0c7b=51, methaneLevelCritical=0, retValue_acc=0, tmp=0, tmp___1=0, NULL=28288, NULL=0, NULL=28293, NULL=28297, cleanupTimeShifts=4, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14eda9ca=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36095943=0, NULL=0, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ef9f9bb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d53d8df=0, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=28306, NULL=28291, NULL=0, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=28295, NULL=0, NULL=0, NULL=0, tmp=1, tmp=1, NULL=28289, NULL=28302, NULL=28283, NULL=28299, head=0, NULL=0, NULL=0, tmp=0, NULL=28307, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@483e776a=0, NULL=0, NULL=28296, NULL=28304, NULL=13816, NULL=28300, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@215764e9=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@340014d4=0, NULL=0, NULL=28284, tmp=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75509db6=0, NULL=28292, tmp=0, NULL=28290, NULL=28303, NULL=28286, tmp___0=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=28301, retValue_acc=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b60a790=0, NULL=0, NULL=28298, retValue_acc=1, NULL=28305, tmp___2=51, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, NULL=28287, NULL=28285, NULL=28308, NULL=28294} - 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; [L494] int pumpRunning = 0; [L495] int systemActive = 1; [L766] int waterLevel = 1; [L767] int methaneLevelCritical = 0; [L895] int cleanupTimeShifts = 4; [L968] int retValue_acc ; [L969] int tmp ; [L747] int retValue_acc ; [L750] retValue_acc = 1 [L751] return (retValue_acc); [L975] tmp = valid_product() [L977] COND TRUE \read(tmp) [L421] int splverifierCounter ; [L422] int tmp ; [L423] int tmp___0 ; [L424] int tmp___1 ; [L425] int tmp___2 ; [L428] splverifierCounter = 0 Loop: [L430] COND TRUE 1 [L432] COND TRUE splverifierCounter < 4 [L438] tmp = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp)) [L448] tmp___0 = __VERIFIER_nondet_int() [L450] COND FALSE !(\read(tmp___0)) [L458] tmp___2 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___2) [L502] COND FALSE !(\read(pumpRunning)) [L509] COND TRUE \read(systemActive) [L583] int tmp ; [L586] COND FALSE !(\read(pumpRunning)) [L557] int tmp ; [L560] COND FALSE !(\read(pumpRunning)) [L531] int tmp ; [L534] COND TRUE ! pumpRunning [L680] int retValue_acc ; [L681] int tmp ; [L682] int tmp___0 ; [L846] int retValue_acc ; [L849] COND TRUE waterLevel < 2 [L850] retValue_acc = 1 [L851] return (retValue_acc); [L686] tmp = isHighWaterSensorDry() [L688] COND TRUE \read(tmp) [L689] tmp___0 = 0 [L693] retValue_acc = tmp___0 [L694] return (retValue_acc); [L536] tmp = isHighWaterLevel() [L538] COND FALSE !(\read(tmp)) [L870] int tmp ; [L871] int tmp___0 ; [L837] int retValue_acc ; [L840] retValue_acc = waterLevel [L841] return (retValue_acc); [L875] tmp = getWaterLevel() [L877] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:08:06,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b3661a-2a15-4a4f-abd9-977795112b05/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...