./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product45.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_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/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_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/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_1e691417-200d-4078-a444-2ea90a9f3022/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 4c4adbf609ddd472cb6a462753c6f5cc9af64c97af02da4060f4102700285790 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:27:45,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:27:45,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:27:45,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:27:45,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:27:45,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:27:45,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:27:45,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:27:45,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:27:45,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:27:45,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:27:45,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:27:45,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:27:45,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:27:45,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:27:45,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:27:45,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:27:45,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:27:45,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:27:45,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:27:45,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:27:45,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:27:45,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:27:45,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:27:45,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:27:45,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:27:45,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:27:45,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:27:45,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:27:45,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:27:45,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:27:45,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:27:45,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:27:45,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:27:45,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:27:45,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:27:45,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:27:45,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:27:45,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:27:45,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:27:45,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:27:45,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 20:27:45,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:27:45,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:27:45,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:27:45,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:27:45,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:27:45,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:27:45,657 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:27:45,657 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:27:45,658 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:27:45,658 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:27:45,658 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:27:45,658 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:27:45,659 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:27:45,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:27:45,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:27:45,660 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:27:45,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:27:45,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:27:45,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:27:45,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:27:45,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:27:45,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:27:45,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:27:45,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:27:45,662 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:27:45,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:27:45,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:27:45,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:27:45,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:27:45,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:27:45,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:27:45,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:27:45,666 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:27:45,666 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_1e691417-200d-4078-a444-2ea90a9f3022/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c4adbf609ddd472cb6a462753c6f5cc9af64c97af02da4060f4102700285790 [2021-10-21 20:27:45,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:27:45,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:27:45,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:27:45,993 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:27:45,995 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:27:45,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c [2021-10-21 20:27:46,094 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/data/1126a1296/18f75f0cf2684385ab3c3359ce2cc7aa/FLAGea65a6f1c [2021-10-21 20:27:46,764 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:27:46,764 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c [2021-10-21 20:27:46,779 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/data/1126a1296/18f75f0cf2684385ab3c3359ce2cc7aa/FLAGea65a6f1c [2021-10-21 20:27:47,072 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/data/1126a1296/18f75f0cf2684385ab3c3359ce2cc7aa [2021-10-21 20:27:47,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:27:47,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:27:47,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:27:47,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:27:47,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:27:47,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:27:47" (1/1) ... [2021-10-21 20:27:47,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e5abcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47, skipping insertion in model container [2021-10-21 20:27:47,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:27:47" (1/1) ... [2021-10-21 20:27:47,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:27:47,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:27:47,448 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_1e691417-200d-4078-a444-2ea90a9f3022/sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c[8617,8630] [2021-10-21 20:27:47,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:27:47,525 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:27:47,593 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_1e691417-200d-4078-a444-2ea90a9f3022/sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c[8617,8630] [2021-10-21 20:27:47,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:27:47,686 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:27:47,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47 WrapperNode [2021-10-21 20:27:47,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:27:47,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:27:47,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:27:47,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:27:47,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47" (1/1) ... [2021-10-21 20:27:47,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47" (1/1) ... [2021-10-21 20:27:47,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:27:47,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:27:47,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:27:47,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:27:47,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47" (1/1) ... [2021-10-21 20:27:47,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47" (1/1) ... [2021-10-21 20:27:47,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47" (1/1) ... [2021-10-21 20:27:47,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47" (1/1) ... [2021-10-21 20:27:47,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47" (1/1) ... [2021-10-21 20:27:47,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47" (1/1) ... [2021-10-21 20:27:47,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47" (1/1) ... [2021-10-21 20:27:47,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:27:47,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:27:47,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:27:47,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:27:47,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47" (1/1) ... [2021-10-21 20:27:47,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:27:47,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:27:47,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:27:47,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:27:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:27:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:27:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:27:48,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:27:49,111 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:27:49,112 INFO L299 CfgBuilder]: Removed 198 assume(true) statements. [2021-10-21 20:27:49,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:27:49 BoogieIcfgContainer [2021-10-21 20:27:49,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:27:49,116 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:27:49,116 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:27:49,125 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:27:49,126 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:27:49,127 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:27:47" (1/3) ... [2021-10-21 20:27:49,128 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30b4b3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:27:49, skipping insertion in model container [2021-10-21 20:27:49,128 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:27:49,128 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:47" (2/3) ... [2021-10-21 20:27:49,129 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30b4b3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:27:49, skipping insertion in model container [2021-10-21 20:27:49,129 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:27:49,130 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:27:49" (3/3) ... [2021-10-21 20:27:49,131 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product45.cil.c [2021-10-21 20:27:49,185 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:27:49,185 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:27:49,185 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:27:49,186 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:27:49,186 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:27:49,186 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:27:49,186 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:27:49,187 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:27:49,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 132 states, 131 states have (on average 1.5114503816793894) internal successors, (198), 131 states have internal predecessors, (198), 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 20:27:49,242 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-10-21 20:27:49,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:27:49,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:27:49,253 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:27:49,253 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:49,254 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:27:49,255 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 132 states, 131 states have (on average 1.5114503816793894) internal successors, (198), 131 states have internal predecessors, (198), 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 20:27:49,265 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-10-21 20:27:49,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:27:49,266 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:27:49,267 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:27:49,268 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:49,274 INFO L791 eck$LassoCheckResult]: Stem: 123#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 48#L-1true havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 64#L573true 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; 133#L581true main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 115#L275true assume 0 != main_~tmp~1; 132#L248true havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 130#L69-1true [2021-10-21 20:27:49,275 INFO L793 eck$LassoCheckResult]: Loop: 130#L69-1true assume !false; 125#L497true assume test_~splverifierCounter~0 < 4; 93#L498true test_~tmp~6 := test_#t~nondet42;havoc test_#t~nondet42; 119#L506true assume !(0 != test_~tmp~6); 78#L506-1true test_~tmp___0~2 := test_#t~nondet43;havoc test_#t~nondet43; 88#L516true assume !(0 != test_~tmp___0~2); 50#L516-1true test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 100#L526true assume 0 != test_~tmp___2~0; 23#L532-2true assume !(0 != ~pumpRunning~0); 35#L298true assume !(0 != ~systemActive~0); 72#L305true havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 21#L136-3true __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 6#L63true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 130#L69-1true [2021-10-21 20:27:49,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:49,282 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-21 20:27:49,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:49,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203174631] [2021-10-21 20:27:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:49,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:49,592 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:27:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:49,828 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:27:49,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:49,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1679313419, now seen corresponding path program 1 times [2021-10-21 20:27:49,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:49,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486513192] [2021-10-21 20:27:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:49,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:49,869 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:27:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:49,884 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:27:49,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:49,900 INFO L82 PathProgramCache]: Analyzing trace with hash 34965519, now seen corresponding path program 1 times [2021-10-21 20:27:49,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:49,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644401355] [2021-10-21 20:27:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:49,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:50,143 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 20:27:50,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:50,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644401355] [2021-10-21 20:27:50,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644401355] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:50,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:50,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:27:50,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896966449] [2021-10-21 20:27:50,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:50,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:27:50,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:27:50,378 INFO L87 Difference]: Start difference. First operand has 132 states, 131 states have (on average 1.5114503816793894) internal successors, (198), 131 states have internal predecessors, (198), 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 20:27:50,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:50,635 INFO L93 Difference]: Finished difference Result 132 states and 187 transitions. [2021-10-21 20:27:50,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:27:50,638 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 132 states and 187 transitions. [2021-10-21 20:27:50,661 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-10-21 20:27:50,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 132 states to 125 states and 180 transitions. [2021-10-21 20:27:50,681 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 125 [2021-10-21 20:27:50,682 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 125 [2021-10-21 20:27:50,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 180 transitions. [2021-10-21 20:27:50,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:27:50,690 INFO L681 BuchiCegarLoop]: Abstraction has 125 states and 180 transitions. [2021-10-21 20:27:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states and 180 transitions. [2021-10-21 20:27:50,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-10-21 20:27:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.44) internal successors, (180), 124 states have internal predecessors, (180), 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 20:27:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2021-10-21 20:27:50,746 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 180 transitions. [2021-10-21 20:27:50,746 INFO L587 BuchiCegarLoop]: Abstraction has 125 states and 180 transitions. [2021-10-21 20:27:50,746 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:27:50,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states and 180 transitions. [2021-10-21 20:27:50,750 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-10-21 20:27:50,751 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:27:50,751 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:27:50,763 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:27:50,764 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:50,764 INFO L791 eck$LassoCheckResult]: Stem: 405#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 354#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 355#L573 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; 368#L581 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 403#L275 assume 0 != main_~tmp~1; 404#L248 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 288#L69-1 [2021-10-21 20:27:50,764 INFO L793 eck$LassoCheckResult]: Loop: 288#L69-1 assume !false; 406#L497 assume test_~splverifierCounter~0 < 4; 394#L498 test_~tmp~6 := test_#t~nondet42;havoc test_#t~nondet42; 395#L506 assume !(0 != test_~tmp~6); 325#L506-1 test_~tmp___0~2 := test_#t~nondet43;havoc test_#t~nondet43; 381#L516 assume !(0 != test_~tmp___0~2); 329#L516-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 358#L526 assume 0 != test_~tmp___2~0; 320#L532-2 assume !(0 != ~pumpRunning~0); 321#L298 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 340#L356 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 301#L330-1 assume !(0 == ~pumpRunning~0); 303#L305 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 316#L136-3 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 287#L63 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 288#L69-1 [2021-10-21 20:27:50,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:50,765 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-21 20:27:50,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:50,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126138641] [2021-10-21 20:27:50,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:50,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:50,886 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:27:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:51,011 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:27:51,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:51,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1992761193, now seen corresponding path program 1 times [2021-10-21 20:27:51,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:51,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905555603] [2021-10-21 20:27:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:51,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:51,049 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 20:27:51,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:51,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905555603] [2021-10-21 20:27:51,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905555603] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:51,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:51,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:27:51,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901394423] [2021-10-21 20:27:51,060 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:27:51,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:51,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:27:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:27:51,065 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. cyclomatic complexity: 57 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:51,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:51,212 INFO L93 Difference]: Finished difference Result 172 states and 237 transitions. [2021-10-21 20:27:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:27:51,213 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 172 states and 237 transitions. [2021-10-21 20:27:51,218 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 118 [2021-10-21 20:27:51,232 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 172 states to 172 states and 237 transitions. [2021-10-21 20:27:51,233 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 172 [2021-10-21 20:27:51,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 172 [2021-10-21 20:27:51,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 172 states and 237 transitions. [2021-10-21 20:27:51,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:27:51,239 INFO L681 BuchiCegarLoop]: Abstraction has 172 states and 237 transitions. [2021-10-21 20:27:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states and 237 transitions. [2021-10-21 20:27:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-21 20:27:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 172 states have (on average 1.377906976744186) internal successors, (237), 171 states have internal predecessors, (237), 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 20:27:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 237 transitions. [2021-10-21 20:27:51,256 INFO L704 BuchiCegarLoop]: Abstraction has 172 states and 237 transitions. [2021-10-21 20:27:51,256 INFO L587 BuchiCegarLoop]: Abstraction has 172 states and 237 transitions. [2021-10-21 20:27:51,256 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:27:51,256 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 237 transitions. [2021-10-21 20:27:51,259 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 118 [2021-10-21 20:27:51,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:27:51,259 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:27:51,260 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:27:51,260 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:51,261 INFO L791 eck$LassoCheckResult]: Stem: 717#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 658#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 659#L573 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; 672#L581 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 715#L275 assume 0 != main_~tmp~1; 716#L248 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 591#L69-1 [2021-10-21 20:27:51,261 INFO L793 eck$LassoCheckResult]: Loop: 591#L69-1 assume !false; 718#L497 assume test_~splverifierCounter~0 < 4; 701#L498 test_~tmp~6 := test_#t~nondet42;havoc test_#t~nondet42; 702#L506 assume !(0 != test_~tmp~6); 628#L506-1 test_~tmp___0~2 := test_#t~nondet43;havoc test_#t~nondet43; 687#L516 assume !(0 != test_~tmp___0~2); 631#L516-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 662#L526 assume 0 != test_~tmp___2~0; 625#L532-2 assume !(0 != ~pumpRunning~0); 626#L298 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 644#L356 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 605#L330-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 606#L176-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 637#L181-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 676#L475-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 585#L475-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 586#L481-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~2 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 651#L334-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~2); 612#L305 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 621#L136-3 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 590#L63 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 591#L69-1 [2021-10-21 20:27:51,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:51,262 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-21 20:27:51,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:51,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391429077] [2021-10-21 20:27:51,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:51,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:51,327 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:27:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:51,455 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:27:51,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:51,456 INFO L82 PathProgramCache]: Analyzing trace with hash 790147587, now seen corresponding path program 1 times [2021-10-21 20:27:51,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:51,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039526703] [2021-10-21 20:27:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:51,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:51,464 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:27:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:51,475 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:27:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:51,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1246218781, now seen corresponding path program 1 times [2021-10-21 20:27:51,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:51,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726284551] [2021-10-21 20:27:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:51,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:51,591 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 20:27:51,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:51,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726284551] [2021-10-21 20:27:51,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726284551] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:51,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:51,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:27:51,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198965093] [2021-10-21 20:27:51,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:27:51,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:27:51,925 INFO L87 Difference]: Start difference. First operand 172 states and 237 transitions. cyclomatic complexity: 67 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:52,214 INFO L93 Difference]: Finished difference Result 574 states and 794 transitions. [2021-10-21 20:27:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:27:52,214 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 574 states and 794 transitions. [2021-10-21 20:27:52,226 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 411 [2021-10-21 20:27:52,239 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 574 states to 574 states and 794 transitions. [2021-10-21 20:27:52,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 574 [2021-10-21 20:27:52,243 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 574 [2021-10-21 20:27:52,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 574 states and 794 transitions. [2021-10-21 20:27:52,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:27:52,252 INFO L681 BuchiCegarLoop]: Abstraction has 574 states and 794 transitions. [2021-10-21 20:27:52,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states and 794 transitions. [2021-10-21 20:27:52,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 338. [2021-10-21 20:27:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 338 states have (on average 1.3609467455621302) internal successors, (460), 337 states have internal predecessors, (460), 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 20:27:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 460 transitions. [2021-10-21 20:27:52,302 INFO L704 BuchiCegarLoop]: Abstraction has 338 states and 460 transitions. [2021-10-21 20:27:52,302 INFO L587 BuchiCegarLoop]: Abstraction has 338 states and 460 transitions. [2021-10-21 20:27:52,303 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 20:27:52,303 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 338 states and 460 transitions. [2021-10-21 20:27:52,313 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 236 [2021-10-21 20:27:52,313 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:27:52,314 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:27:52,317 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:27:52,317 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:52,318 INFO L791 eck$LassoCheckResult]: Stem: 1503#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1426#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 1427#L573 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; 1443#L581 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 1500#L275 assume 0 != main_~tmp~1; 1501#L248 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1377#L69-1 [2021-10-21 20:27:52,318 INFO L793 eck$LassoCheckResult]: Loop: 1377#L69-1 assume !false; 1504#L497 assume test_~splverifierCounter~0 < 4; 1482#L498 test_~tmp~6 := test_#t~nondet42;havoc test_#t~nondet42; 1483#L506 assume !(0 != test_~tmp~6); 1463#L506-1 test_~tmp___0~2 := test_#t~nondet43;havoc test_#t~nondet43; 1464#L516 assume !(0 != test_~tmp___0~2); 1685#L516-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 1684#L526 assume 0 != test_~tmp___2~0; 1682#L532-2 assume !(0 != ~pumpRunning~0); 1662#L298 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1681#L356 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 1569#L330-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1680#L176-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1461#L181-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 1447#L475-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 1448#L475-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1608#L481-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~2 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 1564#L334-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~2); 1456#L305 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1385#L136-3 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 1354#L63 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1355#L168 __utac_acc__Specification3_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 1356#L69 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1377#L69-1 [2021-10-21 20:27:52,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:52,319 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-21 20:27:52,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:52,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252974552] [2021-10-21 20:27:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:52,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:52,391 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:27:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:52,473 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:27:52,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:52,474 INFO L82 PathProgramCache]: Analyzing trace with hash -877371915, now seen corresponding path program 1 times [2021-10-21 20:27:52,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:52,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613143352] [2021-10-21 20:27:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:52,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:52,488 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:27:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:52,498 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:27:52,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:52,499 INFO L82 PathProgramCache]: Analyzing trace with hash -679618673, now seen corresponding path program 1 times [2021-10-21 20:27:52,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:52,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496692530] [2021-10-21 20:27:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:52,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:52,567 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:27:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:27:52,622 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:29:03,838 WARN L207 SmtUtils]: Spent 1.18 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-21 20:30:16,498 WARN L207 SmtUtils]: Spent 35.33 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-21 20:30:16,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:30:16 BoogieIcfgContainer [2021-10-21 20:30:16,727 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:30:16,728 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:30:16,728 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:30:16,728 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:30:16,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:27:49" (3/4) ... [2021-10-21 20:30:16,733 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 20:30:16,795 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:30:16,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:30:16,797 INFO L168 Benchmark]: Toolchain (without parser) took 149717.70 ms. Allocated memory was 102.8 MB in the beginning and 155.2 MB in the end (delta: 52.4 MB). Free memory was 65.7 MB in the beginning and 36.2 MB in the end (delta: 29.5 MB). Peak memory consumption was 81.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:16,798 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 102.8 MB. Free memory is still 56.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:30:16,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.02 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 65.7 MB in the beginning and 93.8 MB in the end (delta: -28.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:16,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.42 ms. Allocated memory is still 127.9 MB. Free memory was 93.8 MB in the beginning and 89.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:16,800 INFO L168 Benchmark]: Boogie Preprocessor took 121.81 ms. Allocated memory is still 127.9 MB. Free memory was 89.6 MB in the beginning and 87.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:16,801 INFO L168 Benchmark]: RCFGBuilder took 1191.65 ms. Allocated memory is still 127.9 MB. Free memory was 87.0 MB in the beginning and 92.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:16,801 INFO L168 Benchmark]: BuchiAutomizer took 147611.06 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 92.0 MB in the beginning and 38.3 MB in the end (delta: 53.7 MB). Peak memory consumption was 89.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:16,802 INFO L168 Benchmark]: Witness Printer took 68.39 ms. Allocated memory is still 155.2 MB. Free memory was 38.3 MB in the beginning and 36.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:16,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 102.8 MB. Free memory is still 56.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 606.02 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 65.7 MB in the beginning and 93.8 MB in the end (delta: -28.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 110.42 ms. Allocated memory is still 127.9 MB. Free memory was 93.8 MB in the beginning and 89.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 121.81 ms. Allocated memory is still 127.9 MB. Free memory was 89.6 MB in the beginning and 87.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1191.65 ms. Allocated memory is still 127.9 MB. Free memory was 87.0 MB in the beginning and 92.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 147611.06 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 92.0 MB in the beginning and 38.3 MB in the end (delta: 53.7 MB). Peak memory consumption was 89.7 MB. Max. memory is 16.1 GB. * Witness Printer took 68.39 ms. Allocated memory is still 155.2 MB. Free memory was 38.3 MB in the beginning and 36.2 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 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 338 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 147.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 146.4s. Construction of modules took 0.3s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 93.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 236 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 338 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 590 SDtfs, 1550 SDslu, 823 SDs, 0 SdLazy, 169 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 398.7ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 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: 496]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=26373} State at position 1 is {NULL=0, NULL=26373, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@270373d9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7141dd9f=62, NULL=26391, NULL=26387, methaneLevelCritical=0, NULL=0, tmp=0, NULL=26377, NULL=0, tmp___1=0, retValue_acc=0, NULL=0, NULL=26382, tmp=0, cleanupTimeShifts=4, NULL=26394, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b236ed9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8ab0529=0, waterLevel=1, NULL=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=26383, NULL=0, tmp=1, retValue_acc=1, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=26392, NULL=0, NULL=0, NULL=0, tmp___0=0, tmp=1, NULL=26393, NULL=26401, NULL=26384, tmp=0, head=0, NULL=0, NULL=0, NULL=26374, NULL=26390, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@343f8965=0, tmp=0, NULL=26385, retValue_acc=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6ac46f87=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3426c3a2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7de6fa4c=0, NULL=26381, tmp___0=0, NULL=0, NULL=0, NULL=26399, NULL=0, NULL=0, tmp___0=1, NULL=26397, NULL=26388, NULL=0, systemActive=1, NULL=26376, \result=1, NULL=0, \result=0, NULL=26400, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38cd3d16=0, \result=0, NULL=0, NULL=26386, NULL=0, NULL=0, NULL=26379, retValue_acc=1, NULL=26398, NULL=26396, tmp___2=62, splverifierCounter=0, NULL=0, \result=0, NULL=26395, NULL=26378, tmp___1=0, NULL=26375, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@799f2653=0, NULL=26389, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3013891=0, NULL=0, NULL=26380} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L93] int waterLevel = 1; [L94] int methaneLevelCritical = 0; [L187] int cleanupTimeShifts = 4; [L291] int pumpRunning = 0; [L292] int systemActive = 1; [L764] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L266] int retValue_acc ; [L267] int tmp ; [L577] int retValue_acc ; [L580] retValue_acc = 1 [L581] return (retValue_acc); [L273] tmp = valid_product() [L275] COND TRUE \read(tmp) [L487] int splverifierCounter ; [L488] int tmp ; [L489] int tmp___0 ; [L490] int tmp___1 ; [L491] int tmp___2 ; [L494] splverifierCounter = 0 Loop: [L496] COND TRUE 1 [L498] COND TRUE splverifierCounter < 4 [L504] tmp = __VERIFIER_nondet_int() [L506] COND FALSE !(\read(tmp)) [L514] tmp___0 = __VERIFIER_nondet_int() [L516] COND FALSE !(\read(tmp___0)) [L524] tmp___2 = __VERIFIER_nondet_int() [L526] COND TRUE \read(tmp___2) [L298] COND FALSE !(\read(pumpRunning)) [L305] COND TRUE \read(systemActive) [L353] int tmp ; [L356] COND FALSE !(\read(pumpRunning)) [L327] int tmp ; [L330] COND TRUE ! pumpRunning [L467] int retValue_acc ; [L468] int tmp ; [L469] int tmp___0 ; [L173] int retValue_acc ; [L176] COND TRUE waterLevel < 2 [L177] retValue_acc = 1 [L178] return (retValue_acc); [L473] tmp = isHighWaterSensorDry() [L475] COND TRUE \read(tmp) [L476] tmp___0 = 0 [L480] retValue_acc = tmp___0 [L481] return (retValue_acc); [L332] tmp = isHighWaterLevel() [L334] COND FALSE !(\read(tmp)) [L55] int tmp ; [L56] int tmp___0 ; [L57] int tmp___1 ; [L132] int retValue_acc ; [L135] retValue_acc = methaneLevelCritical [L136] return (retValue_acc); [L61] tmp = isMethaneLevelCritical() [L63] COND FALSE !(\read(tmp)) [L164] int retValue_acc ; [L167] retValue_acc = waterLevel [L168] return (retValue_acc); [L67] tmp___0 = getWaterLevel() [L69] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:30:16,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e691417-200d-4078-a444-2ea90a9f3022/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...