./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product55.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product55.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer --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 5a303cc650f696ad71f04e0b60c5ac6485d0c198 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-30 00:05:26,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:05:26,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:05:26,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:05:26,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:05:26,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:05:26,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:05:26,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:05:26,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:05:26,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:05:26,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:05:26,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:05:26,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:05:26,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:05:26,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:05:26,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:05:26,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:05:26,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:05:26,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:05:26,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:05:26,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:05:26,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:05:26,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:05:26,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:05:26,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:05:26,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:05:26,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:05:26,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:05:26,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:05:26,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:05:26,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:05:26,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:05:26,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:05:26,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:05:26,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:05:26,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:05:26,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:05:26,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:05:26,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:05:26,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:05:26,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:05:26,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:05:26,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:05:26,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:05:26,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:05:26,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:05:26,588 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:05:26,588 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:05:26,588 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:05:26,589 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:05:26,589 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:05:26,589 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:05:26,590 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:05:26,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:05:26,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:05:26,591 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:05:26,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:05:26,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:05:26,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:05:26,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:05:26,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:05:26,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:05:26,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:05:26,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:05:26,594 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:05:26,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:05:26,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:05:26,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:05:26,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:05:26,595 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:05:26,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:05:26,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:05:26,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:05:26,598 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:05:26,599 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:05:26,599 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-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a303cc650f696ad71f04e0b60c5ac6485d0c198 [2020-11-30 00:05:26,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:05:27,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:05:27,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:05:27,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:05:27,029 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:05:27,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec2_product55.cil.c [2020-11-30 00:05:27,138 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/data/31b1fd18b/e62f38a2ae814e05a05d5b2f664f39bc/FLAG4836dd862 [2020-11-30 00:05:27,726 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:05:27,726 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/sv-benchmarks/c/product-lines/minepump_spec2_product55.cil.c [2020-11-30 00:05:27,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/data/31b1fd18b/e62f38a2ae814e05a05d5b2f664f39bc/FLAG4836dd862 [2020-11-30 00:05:28,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/data/31b1fd18b/e62f38a2ae814e05a05d5b2f664f39bc [2020-11-30 00:05:28,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:05:28,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:05:28,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:05:28,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:05:28,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:05:28,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:05:28" (1/1) ... [2020-11-30 00:05:28,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544941ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28, skipping insertion in model container [2020-11-30 00:05:28,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:05:28" (1/1) ... [2020-11-30 00:05:28,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:05:28,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:05:28,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:05:28,497 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:05:28,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:05:28,662 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:05:28,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28 WrapperNode [2020-11-30 00:05:28,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:05:28,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:05:28,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:05:28,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:05:28,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28" (1/1) ... [2020-11-30 00:05:28,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28" (1/1) ... [2020-11-30 00:05:28,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:05:28,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:05:28,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:05:28,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:05:28,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28" (1/1) ... [2020-11-30 00:05:28,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28" (1/1) ... [2020-11-30 00:05:28,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28" (1/1) ... [2020-11-30 00:05:28,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28" (1/1) ... [2020-11-30 00:05:28,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28" (1/1) ... [2020-11-30 00:05:28,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28" (1/1) ... [2020-11-30 00:05:28,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28" (1/1) ... [2020-11-30 00:05:28,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:05:28,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:05:28,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:05:28,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:05:28,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:05:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:05:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:05:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:05:29,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:05:30,510 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:05:30,510 INFO L298 CfgBuilder]: Removed 288 assume(true) statements. [2020-11-30 00:05:30,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:05:30 BoogieIcfgContainer [2020-11-30 00:05:30,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:05:30,514 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:05:30,514 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:05:30,518 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:05:30,519 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:05:30,519 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:05:28" (1/3) ... [2020-11-30 00:05:30,521 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f7dd778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:05:30, skipping insertion in model container [2020-11-30 00:05:30,521 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:05:30,522 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:28" (2/3) ... [2020-11-30 00:05:30,523 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f7dd778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:05:30, skipping insertion in model container [2020-11-30 00:05:30,523 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:05:30,523 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:05:30" (3/3) ... [2020-11-30 00:05:30,527 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2020-11-30 00:05:30,587 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:05:30,588 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:05:30,588 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:05:30,588 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:05:30,588 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:05:30,588 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:05:30,589 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:05:30,589 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:05:30,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 195 states. [2020-11-30 00:05:30,675 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2020-11-30 00:05:30,676 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:05:30,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:05:30,695 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:30,695 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:30,696 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:05:30,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 195 states. [2020-11-30 00:05:30,710 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2020-11-30 00:05:30,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:05:30,716 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:05:30,718 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:30,720 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:30,738 INFO L794 eck$LassoCheckResult]: Stem: 49#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(13);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(80, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(117, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(109, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(112, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(110, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 3 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(32, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);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~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 5#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 114#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 27#L75true main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 192#L993true assume 0 != main_~tmp~10; 38#L969true ~methAndRunningLastTime~0 := 0; 91#L877true havoc test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 92#L888-1true [2020-11-30 00:05:30,739 INFO L796 eck$LassoCheckResult]: Loop: 92#L888-1true assume !false; 99#L205true assume test_~splverifierCounter~0 < 4; 188#L206true test_~tmp~0 := test_#t~nondet18;havoc test_#t~nondet18; 79#L214true assume !(0 != test_~tmp~0); 77#L214-1true test_~tmp___0~0 := test_#t~nondet19;havoc test_#t~nondet19; 18#L224true assume !(0 != test_~tmp___0~0); 16#L224-1true test_~tmp___2~0 := test_#t~nondet20;havoc test_#t~nondet20; 160#L234true assume 0 != test_~tmp___2~0; 22#L240-1true assume !(0 != ~pumpRunning~0); 25#L273true assume !(0 != ~systemActive~0); 84#L280true havoc __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 12#L131-1true __utac_acc__Specification2_spec__2_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret79;havoc __utac_acc__Specification2_spec__2_#t~ret79; 90#L888true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 92#L888-1true [2020-11-30 00:05:30,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:30,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-30 00:05:30,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:30,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132268083] [2020-11-30 00:05:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:05:31,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:05:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:05:31,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:05:31,464 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:05:31,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:31,470 INFO L82 PathProgramCache]: Analyzing trace with hash 16390485, now seen corresponding path program 1 times [2020-11-30 00:05:31,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:31,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326331142] [2020-11-30 00:05:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:05:31,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:05:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:05:31,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:05:31,514 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:05:31,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:31,518 INFO L82 PathProgramCache]: Analyzing trace with hash 849686991, now seen corresponding path program 1 times [2020-11-30 00:05:31,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:31,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877091595] [2020-11-30 00:05:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:31,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:31,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877091595] [2020-11-30 00:05:31,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:31,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:05:31,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538426149] [2020-11-30 00:05:31,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:31,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:05:31,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:05:31,892 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 6 states. [2020-11-30 00:05:32,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:32,353 INFO L93 Difference]: Finished difference Result 430 states and 637 transitions. [2020-11-30 00:05:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:05:32,362 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 430 states and 637 transitions. [2020-11-30 00:05:32,373 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 279 [2020-11-30 00:05:32,391 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 430 states to 409 states and 616 transitions. [2020-11-30 00:05:32,393 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 409 [2020-11-30 00:05:32,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 409 [2020-11-30 00:05:32,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 409 states and 616 transitions. [2020-11-30 00:05:32,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:05:32,408 INFO L691 BuchiCegarLoop]: Abstraction has 409 states and 616 transitions. [2020-11-30 00:05:32,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states and 616 transitions. [2020-11-30 00:05:32,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 229. [2020-11-30 00:05:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-11-30 00:05:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 343 transitions. [2020-11-30 00:05:32,477 INFO L714 BuchiCegarLoop]: Abstraction has 229 states and 343 transitions. [2020-11-30 00:05:32,478 INFO L594 BuchiCegarLoop]: Abstraction has 229 states and 343 transitions. [2020-11-30 00:05:32,478 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:05:32,478 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 229 states and 343 transitions. [2020-11-30 00:05:32,482 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 156 [2020-11-30 00:05:32,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:05:32,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:05:32,486 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:32,487 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:32,487 INFO L794 eck$LassoCheckResult]: Stem: 787#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(13);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(80, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(117, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(109, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(112, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(110, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 3 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(32, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);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~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 657#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 658#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 708#L75 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 738#L993 assume 0 != main_~tmp~10; 766#L969 ~methAndRunningLastTime~0 := 0; 648#L877 havoc test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 646#L888-1 [2020-11-30 00:05:32,489 INFO L796 eck$LassoCheckResult]: Loop: 646#L888-1 assume !false; 649#L205 assume test_~splverifierCounter~0 < 4; 682#L206 test_~tmp~0 := test_#t~nondet18;havoc test_#t~nondet18; 820#L214 assume !(0 != test_~tmp~0); 680#L214-1 test_~tmp___0~0 := test_#t~nondet19;havoc test_#t~nondet19; 697#L224 assume !(0 != test_~tmp___0~0); 691#L224-1 test_~tmp___2~0 := test_#t~nondet20;havoc test_#t~nondet20; 692#L234 assume 0 != test_~tmp___2~0; 713#L240-1 assume !(0 != ~pumpRunning~0); 715#L273 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret24, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 723#L357 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret23, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 731#L331-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret22, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 732#L305-3 assume !(0 == ~pumpRunning~0); 694#L280 havoc __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 670#L131-1 __utac_acc__Specification2_spec__2_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret79;havoc __utac_acc__Specification2_spec__2_#t~ret79; 645#L888 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 646#L888-1 [2020-11-30 00:05:32,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:32,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-30 00:05:32,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:32,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425055603] [2020-11-30 00:05:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:05:32,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:05:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:05:32,657 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:05:32,673 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:05:32,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:32,674 INFO L82 PathProgramCache]: Analyzing trace with hash 566198014, now seen corresponding path program 1 times [2020-11-30 00:05:32,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:32,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614954627] [2020-11-30 00:05:32,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:32,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614954627] [2020-11-30 00:05:32,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:32,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:32,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110335362] [2020-11-30 00:05:32,693 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:05:32,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:32,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:32,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:32,695 INFO L87 Difference]: Start difference. First operand 229 states and 343 transitions. cyclomatic complexity: 117 Second operand 3 states. [2020-11-30 00:05:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:32,874 INFO L93 Difference]: Finished difference Result 235 states and 329 transitions. [2020-11-30 00:05:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:32,875 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 235 states and 329 transitions. [2020-11-30 00:05:32,879 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 164 [2020-11-30 00:05:32,882 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 235 states to 235 states and 329 transitions. [2020-11-30 00:05:32,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 235 [2020-11-30 00:05:32,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 235 [2020-11-30 00:05:32,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 235 states and 329 transitions. [2020-11-30 00:05:32,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:05:32,888 INFO L691 BuchiCegarLoop]: Abstraction has 235 states and 329 transitions. [2020-11-30 00:05:32,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states and 329 transitions. [2020-11-30 00:05:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2020-11-30 00:05:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-11-30 00:05:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 329 transitions. [2020-11-30 00:05:32,904 INFO L714 BuchiCegarLoop]: Abstraction has 235 states and 329 transitions. [2020-11-30 00:05:32,904 INFO L594 BuchiCegarLoop]: Abstraction has 235 states and 329 transitions. [2020-11-30 00:05:32,905 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:05:32,905 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 235 states and 329 transitions. [2020-11-30 00:05:32,908 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 164 [2020-11-30 00:05:32,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:05:32,908 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:05:32,911 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:32,912 INFO L853 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] [2020-11-30 00:05:32,912 INFO L794 eck$LassoCheckResult]: Stem: 1247#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(13);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(80, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(117, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(109, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(112, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(110, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 3 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(32, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);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~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 1128#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 1129#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1176#L75 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 1205#L993 assume 0 != main_~tmp~10; 1231#L969 ~methAndRunningLastTime~0 := 0; 1118#L877 havoc test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1116#L888-1 [2020-11-30 00:05:32,913 INFO L796 eck$LassoCheckResult]: Loop: 1116#L888-1 assume !false; 1119#L205 assume test_~splverifierCounter~0 < 4; 1147#L206 test_~tmp~0 := test_#t~nondet18;havoc test_#t~nondet18; 1267#L214 assume !(0 != test_~tmp~0); 1145#L214-1 test_~tmp___0~0 := test_#t~nondet19;havoc test_#t~nondet19; 1164#L224 assume !(0 != test_~tmp___0~0); 1166#L224-1 test_~tmp___2~0 := test_#t~nondet20;havoc test_#t~nondet20; 1329#L234 assume 0 != test_~tmp___2~0; 1328#L240-1 assume !(0 != ~pumpRunning~0); 1188#L273 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret24, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1189#L357 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret23, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 1199#L331-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret22, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1200#L305-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret42, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 1194#L171-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 1195#L176-3 isHighWaterLevel_#t~ret42 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret42;havoc isHighWaterLevel_#t~ret42; 1253#L459-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1260#L459-11 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 1240#L465-3 processEnvironment__wrappee__highWaterSensor_#t~ret22 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret22;havoc processEnvironment__wrappee__highWaterSensor_#t~ret22; 1169#L309-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1159#L280 havoc __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 1137#L131-1 __utac_acc__Specification2_spec__2_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret79;havoc __utac_acc__Specification2_spec__2_#t~ret79; 1115#L888 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 1116#L888-1 [2020-11-30 00:05:32,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:32,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-30 00:05:32,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:32,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012069424] [2020-11-30 00:05:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:05:32,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:05:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:05:33,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:05:33,069 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:05:33,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:33,070 INFO L82 PathProgramCache]: Analyzing trace with hash -746930582, now seen corresponding path program 1 times [2020-11-30 00:05:33,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:33,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507619794] [2020-11-30 00:05:33,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:05:33,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:05:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:05:33,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:05:33,085 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:05:33,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:33,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1614115024, now seen corresponding path program 1 times [2020-11-30 00:05:33,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:33,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566668262] [2020-11-30 00:05:33,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:05:33,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:05:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:05:33,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:05:33,186 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:05:33,391 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-11-30 00:07:01,335 WARN L193 SmtUtils]: Spent 1.46 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-30 00:08:04,141 WARN L193 SmtUtils]: Spent 1.05 m on a formula simplification that was a NOOP. DAG size: 435 [2020-11-30 00:08:04,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:08:04 BoogieIcfgContainer [2020-11-30 00:08:04,500 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:08:04,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:08:04,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:08:04,510 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:08:04,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:05:30" (3/4) ... [2020-11-30 00:08:04,514 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:08:04,599 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_22aa2865-4381-4b90-8057-ec4d7e594548/bin/uautomizer/witness.graphml [2020-11-30 00:08:04,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:08:04,607 INFO L168 Benchmark]: Toolchain (without parser) took 156555.14 ms. Allocated memory was 81.8 MB in the beginning and 144.7 MB in the end (delta: 62.9 MB). Free memory was 47.7 MB in the beginning and 42.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 67.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:08:04,610 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 53.5 MB in the beginning and 53.5 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:08:04,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.98 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 47.5 MB in the beginning and 64.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:08:04,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.82 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 59.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:08:04,614 INFO L168 Benchmark]: Boogie Preprocessor took 102.05 ms. Allocated memory is still 98.6 MB. Free memory was 59.9 MB in the beginning and 56.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:08:04,615 INFO L168 Benchmark]: RCFGBuilder took 1626.24 ms. Allocated memory is still 98.6 MB. Free memory was 56.4 MB in the beginning and 40.1 MB in the end (delta: 16.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:08:04,615 INFO L168 Benchmark]: BuchiAutomizer took 153986.32 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 39.5 MB in the beginning and 45.3 MB in the end (delta: -5.8 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:08:04,615 INFO L168 Benchmark]: Witness Printer took 94.83 ms. Allocated memory is still 144.7 MB. Free memory was 45.3 MB in the beginning and 42.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:08:04,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 53.5 MB in the beginning and 53.5 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 610.98 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 47.5 MB in the beginning and 64.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.82 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 59.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.05 ms. Allocated memory is still 98.6 MB. Free memory was 59.9 MB in the beginning and 56.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1626.24 ms. Allocated memory is still 98.6 MB. Free memory was 56.4 MB in the beginning and 40.1 MB in the end (delta: 16.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 153986.32 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 39.5 MB in the beginning and 45.3 MB in the end (delta: -5.8 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.1 GB. * Witness Printer took 94.83 ms. Allocated memory is still 144.7 MB. Free memory was 45.3 MB in the beginning and 42.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 235 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 153.8s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 152.9s. Construction of modules took 0.2s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 180 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 235 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 489 SDtfs, 1519 SDslu, 1109 SDs, 0 SdLazy, 81 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 204]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=6033} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=6033, NULL=16776, NULL=0, NULL=16760, NULL=16778, methaneLevelCritical=0, NULL=16765, retValue_acc=0, NULL=0, tmp___1=0, NULL=16769, NULL=0, NULL=16767, cleanupTimeShifts=4, tmp=0, tmp=1, NULL=16774, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1fd0dcdf=0, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=6039, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e51604=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, tmp=1, NULL=6036, NULL=0, NULL=0, NULL=0, NULL=0, methAndRunningLastTime=0, NULL=16770, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69d87f28=0, NULL=16780, NULL=16761, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55d6f7ba=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@613adf5f=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34782221=52, NULL=16777, NULL=0, NULL=0, NULL=0, NULL=6037, NULL=16759, NULL=16771, NULL=0, NULL=16764, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73d6ed95=0, NULL=16775, tmp=0, NULL=16762, tmp___0=0, NULL=0, NULL=6034, NULL=0, NULL=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43d8251c=0, NULL=16779, NULL=0, NULL=0, systemActive=1, \result=0, retValue_acc=0, NULL=16772, retValue_acc=0, \result=0, NULL=16766, NULL=0, NULL=6038, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79d3d7eb=0, NULL=6035, NULL=16768, retValue_acc=1, tmp___0=0, tmp___2=52, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=16773, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53e0b8a7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70b8d1f7=0, NULL=0, NULL=0, NULL=16763, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L88] int waterLevel = 1; [L89] int methaneLevelCritical = 0; [L265] int pumpRunning = 0; [L266] int systemActive = 1; [L673] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L871] int methAndRunningLastTime ; [L910] int cleanupTimeShifts = 4; [L984] int retValue_acc ; [L985] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L991] tmp = valid_product() [L993] COND TRUE \read(tmp) [L876] methAndRunningLastTime = 0 [L195] int splverifierCounter ; [L196] int tmp ; [L197] int tmp___0 ; [L198] int tmp___1 ; [L199] int tmp___2 ; [L202] splverifierCounter = 0 Loop: [L204] COND TRUE 1 [L206] COND TRUE splverifierCounter < 4 [L212] tmp = __VERIFIER_nondet_int() [L214] COND FALSE !(\read(tmp)) [L222] tmp___0 = __VERIFIER_nondet_int() [L224] COND FALSE !(\read(tmp___0)) [L232] tmp___2 = __VERIFIER_nondet_int() [L234] COND TRUE \read(tmp___2) [L273] COND FALSE !(\read(pumpRunning)) [L280] COND TRUE \read(systemActive) [L354] int tmp ; [L357] COND FALSE !(\read(pumpRunning)) [L328] int tmp ; [L331] COND FALSE !(\read(pumpRunning)) [L302] int tmp ; [L305] COND TRUE ! pumpRunning [L451] int retValue_acc ; [L452] int tmp ; [L453] int tmp___0 ; [L168] int retValue_acc ; [L171] COND TRUE waterLevel < 2 [L172] retValue_acc = 1 [L173] return (retValue_acc); [L457] tmp = isHighWaterSensorDry() [L459] COND TRUE \read(tmp) [L460] tmp___0 = 0 [L464] retValue_acc = tmp___0 [L465] return (retValue_acc); [L307] tmp = isHighWaterLevel() [L309] COND FALSE !(\read(tmp)) [L881] int tmp ; [L882] int tmp___0 ; [L127] int retValue_acc ; [L130] retValue_acc = methaneLevelCritical [L131] return (retValue_acc); [L886] tmp = isMethaneLevelCritical() [L888] COND FALSE !(\read(tmp)) [L904] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...