./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product51.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_420e91d2-9388-49a2-b9cb-ccbf4d530b28/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/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 766a879002f02395031e659ac25b856858b20e6e .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-29 22:03:07,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:03:07,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:03:07,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:03:07,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:03:07,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:03:07,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:03:07,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:03:07,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:03:07,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:03:07,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:03:07,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:03:07,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:03:07,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:03:07,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:03:07,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:03:07,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:03:07,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:03:07,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:03:07,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:03:07,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:03:07,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:03:07,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:03:07,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:03:07,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:03:07,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:03:07,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:03:07,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:03:07,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:03:07,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:03:07,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:03:07,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:03:07,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:03:07,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:03:07,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:03:07,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:03:07,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:03:07,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:03:07,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:03:07,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:03:07,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:03:07,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 22:03:07,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:03:07,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:03:07,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:03:07,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:03:07,538 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:03:07,539 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:03:07,539 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:03:07,539 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:03:07,539 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:03:07,539 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:03:07,540 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:03:07,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:03:07,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:03:07,547 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:03:07,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:03:07,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:03:07,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:03:07,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:03:07,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:03:07,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:03:07,548 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:03:07,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:03:07,549 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:03:07,549 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:03:07,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:03:07,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:03:07,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:03:07,550 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:03:07,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:03:07,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:03:07,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:03:07,552 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:03:07,554 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:03:07,554 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_420e91d2-9388-49a2-b9cb-ccbf4d530b28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 766a879002f02395031e659ac25b856858b20e6e [2020-11-29 22:03:07,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:03:07,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:03:07,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:03:07,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:03:07,904 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:03:07,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c [2020-11-29 22:03:07,978 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/bin/uautomizer/data/e4109c921/9eaf24e2fb124619adcb337ab4a8460e/FLAG391bff563 [2020-11-29 22:03:08,523 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:03:08,528 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c [2020-11-29 22:03:08,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/bin/uautomizer/data/e4109c921/9eaf24e2fb124619adcb337ab4a8460e/FLAG391bff563 [2020-11-29 22:03:08,810 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/bin/uautomizer/data/e4109c921/9eaf24e2fb124619adcb337ab4a8460e [2020-11-29 22:03:08,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:03:08,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:03:08,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:03:08,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:03:08,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:03:08,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:03:08" (1/1) ... [2020-11-29 22:03:08,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b437c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:08, skipping insertion in model container [2020-11-29 22:03:08,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:03:08" (1/1) ... [2020-11-29 22:03:08,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:03:08,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:03:09,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:03:09,352 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:03:09,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:03:09,480 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:03:09,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:09 WrapperNode [2020-11-29 22:03:09,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:03:09,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:03:09,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:03:09,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:03:09,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:09" (1/1) ... [2020-11-29 22:03:09,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:09" (1/1) ... [2020-11-29 22:03:09,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:03:09,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:03:09,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:03:09,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:03:09,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:09" (1/1) ... [2020-11-29 22:03:09,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:09" (1/1) ... [2020-11-29 22:03:09,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:09" (1/1) ... [2020-11-29 22:03:09,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:09" (1/1) ... [2020-11-29 22:03:09,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:09" (1/1) ... [2020-11-29 22:03:09,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:09" (1/1) ... [2020-11-29 22:03:09,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:09" (1/1) ... [2020-11-29 22:03:09,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:03:09,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:03:09,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:03:09,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:03:09,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/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 [2020-11-29 22:03:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:03:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:03:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:03:09,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:03:10,795 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:03:10,795 INFO L298 CfgBuilder]: Removed 172 assume(true) statements. [2020-11-29 22:03:10,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:03:10 BoogieIcfgContainer [2020-11-29 22:03:10,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:03:10,797 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:03:10,797 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:03:10,802 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:03:10,803 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:03:10,803 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:03:08" (1/3) ... [2020-11-29 22:03:10,805 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34a9bda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:03:10, skipping insertion in model container [2020-11-29 22:03:10,805 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:03:10,805 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:03:09" (2/3) ... [2020-11-29 22:03:10,806 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34a9bda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:03:10, skipping insertion in model container [2020-11-29 22:03:10,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:03:10,806 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:03:10" (3/3) ... [2020-11-29 22:03:10,810 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product51.cil.c [2020-11-29 22:03:10,875 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:03:10,876 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:03:10,876 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:03:10,876 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:03:10,876 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:03:10,876 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:03:10,876 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:03:10,877 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:03:10,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states. [2020-11-29 22:03:10,948 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2020-11-29 22:03:10,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:03:10,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:03:10,959 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:03:10,960 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:03:10,960 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:03:10,960 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states. [2020-11-29 22:03:10,981 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2020-11-29 22:03:10,981 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:03:10,981 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:03:10,982 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:03:10,983 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:03:10,988 INFO L794 eck$LassoCheckResult]: Stem: 94#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 12#L-1true havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~8, main_~tmp~6;havoc main_~retValue_acc~8;havoc main_~tmp~6; 13#L596true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 41#L604true main_#t~ret45 := valid_product_#res;main_~tmp~6 := main_#t~ret45;havoc main_#t~ret45; 45#L560true assume 0 != main_~tmp~6; 89#L534true havoc test_#t~nondet17, test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, 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; 117#L456-1true [2020-11-29 22:03:10,989 INFO L796 eck$LassoCheckResult]: Loop: 117#L456-1true assume !false; 110#L167true assume test_~splverifierCounter~0 < 4; 72#L168true test_~tmp~0 := test_#t~nondet17;havoc test_#t~nondet17; 84#L176true assume !(0 != test_~tmp~0); 83#L176-1true test_~tmp___0~0 := test_#t~nondet18;havoc test_#t~nondet18; 5#L186true assume !(0 != test_~tmp___0~0); 19#L186-1true test_~tmp___2~0 := test_#t~nondet19;havoc test_#t~nondet19; 67#L196true assume 0 != test_~tmp___2~0; 36#L202-1true assume !(0 != ~pumpRunning~0); 55#L235true assume !(0 != ~systemActive~0); 88#L242true havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;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; 100#L93true __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 25#L450true assume 0 != __utac_acc__Specification3_spec__1_~tmp~5; 117#L456-1true [2020-11-29 22:03:10,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:03:10,999 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 22:03:11,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:03:11,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19731416] [2020-11-29 22:03:11,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:03:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:11,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:11,498 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:11,553 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:03:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:03:11,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1671186434, now seen corresponding path program 1 times [2020-11-29 22:03:11,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:03:11,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483420032] [2020-11-29 22:03:11,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:03:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:11,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:11,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:11,590 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:03:11,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:03:11,592 INFO L82 PathProgramCache]: Analyzing trace with hash 43092504, now seen corresponding path program 1 times [2020-11-29 22:03:11,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:03:11,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435192270] [2020-11-29 22:03:11,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:03:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:03:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:03:11,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435192270] [2020-11-29 22:03:11,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:03:11,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:03:11,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763662156] [2020-11-29 22:03:11,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:03:11,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:03:11,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:03:11,974 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 6 states. [2020-11-29 22:03:12,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:03:12,399 INFO L93 Difference]: Finished difference Result 294 states and 423 transitions. [2020-11-29 22:03:12,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:03:12,402 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 294 states and 423 transitions. [2020-11-29 22:03:12,409 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 189 [2020-11-29 22:03:12,420 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 294 states to 273 states and 402 transitions. [2020-11-29 22:03:12,421 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 273 [2020-11-29 22:03:12,426 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 273 [2020-11-29 22:03:12,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 273 states and 402 transitions. [2020-11-29 22:03:12,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:03:12,437 INFO L691 BuchiCegarLoop]: Abstraction has 273 states and 402 transitions. [2020-11-29 22:03:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states and 402 transitions. [2020-11-29 22:03:12,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 162. [2020-11-29 22:03:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-11-29 22:03:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 237 transitions. [2020-11-29 22:03:12,476 INFO L714 BuchiCegarLoop]: Abstraction has 162 states and 237 transitions. [2020-11-29 22:03:12,476 INFO L594 BuchiCegarLoop]: Abstraction has 162 states and 237 transitions. [2020-11-29 22:03:12,476 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:03:12,476 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 162 states and 237 transitions. [2020-11-29 22:03:12,478 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 112 [2020-11-29 22:03:12,479 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:03:12,479 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:03:12,480 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:03:12,480 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:03:12,480 INFO L794 eck$LassoCheckResult]: Stem: 544#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 455#L-1 havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~8, main_~tmp~6;havoc main_~retValue_acc~8;havoc main_~tmp~6; 456#L596 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 457#L604 main_#t~ret45 := valid_product_#res;main_~tmp~6 := main_#t~ret45;havoc main_#t~ret45; 504#L560 assume 0 != main_~tmp~6; 507#L534 havoc test_#t~nondet17, test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, 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; 479#L456-1 [2020-11-29 22:03:12,480 INFO L796 eck$LassoCheckResult]: Loop: 479#L456-1 assume !false; 548#L167 assume test_~splverifierCounter~0 < 4; 532#L168 test_~tmp~0 := test_#t~nondet17;havoc test_#t~nondet17; 533#L176 assume !(0 != test_~tmp~0); 537#L176-1 test_~tmp___0~0 := test_#t~nondet18;havoc test_#t~nondet18; 441#L186 assume !(0 != test_~tmp___0~0); 442#L186-1 test_~tmp___2~0 := test_#t~nondet19;havoc test_#t~nondet19; 467#L196 assume 0 != test_~tmp___2~0; 494#L202-1 assume !(0 != ~pumpRunning~0); 496#L235 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 471#L293 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 473#L267-1 assume !(0 == ~pumpRunning~0); 469#L242 havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;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; 541#L93 __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 477#L450 assume 0 != __utac_acc__Specification3_spec__1_~tmp~5; 479#L456-1 [2020-11-29 22:03:12,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:03:12,481 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 22:03:12,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:03:12,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423363460] [2020-11-29 22:03:12,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:03:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:12,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:12,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:12,625 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:03:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:03:12,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1961899900, now seen corresponding path program 1 times [2020-11-29 22:03:12,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:03:12,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942546510] [2020-11-29 22:03:12,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:03:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:03:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:03:12,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942546510] [2020-11-29 22:03:12,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:03:12,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:03:12,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072515457] [2020-11-29 22:03:12,646 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 22:03:12,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:03:12,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:03:12,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:03:12,647 INFO L87 Difference]: Start difference. First operand 162 states and 237 transitions. cyclomatic complexity: 78 Second operand 3 states. [2020-11-29 22:03:12,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:03:12,792 INFO L93 Difference]: Finished difference Result 207 states and 286 transitions. [2020-11-29 22:03:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:03:12,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 207 states and 286 transitions. [2020-11-29 22:03:12,795 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 146 [2020-11-29 22:03:12,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 207 states to 207 states and 286 transitions. [2020-11-29 22:03:12,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 207 [2020-11-29 22:03:12,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 207 [2020-11-29 22:03:12,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207 states and 286 transitions. [2020-11-29 22:03:12,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:03:12,802 INFO L691 BuchiCegarLoop]: Abstraction has 207 states and 286 transitions. [2020-11-29 22:03:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states and 286 transitions. [2020-11-29 22:03:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-11-29 22:03:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-11-29 22:03:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 286 transitions. [2020-11-29 22:03:12,819 INFO L714 BuchiCegarLoop]: Abstraction has 207 states and 286 transitions. [2020-11-29 22:03:12,820 INFO L594 BuchiCegarLoop]: Abstraction has 207 states and 286 transitions. [2020-11-29 22:03:12,820 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 22:03:12,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 207 states and 286 transitions. [2020-11-29 22:03:12,822 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 146 [2020-11-29 22:03:12,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:03:12,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:03:12,823 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:03:12,823 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] [2020-11-29 22:03:12,823 INFO L794 eck$LassoCheckResult]: Stem: 926#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 830#L-1 havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~8, main_~tmp~6;havoc main_~retValue_acc~8;havoc main_~tmp~6; 831#L596 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 832#L604 main_#t~ret45 := valid_product_#res;main_~tmp~6 := main_#t~ret45;havoc main_#t~ret45; 881#L560 assume 0 != main_~tmp~6; 884#L534 havoc test_#t~nondet17, test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, 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; 854#L456-1 [2020-11-29 22:03:12,823 INFO L796 eck$LassoCheckResult]: Loop: 854#L456-1 assume !false; 996#L167 assume test_~splverifierCounter~0 < 4; 995#L168 test_~tmp~0 := test_#t~nondet17;havoc test_#t~nondet17; 994#L176 assume !(0 != test_~tmp~0); 917#L176-1 test_~tmp___0~0 := test_#t~nondet18;havoc test_#t~nondet18; 918#L186 assume !(0 != test_~tmp___0~0); 991#L186-1 test_~tmp___2~0 := test_#t~nondet19;havoc test_#t~nondet19; 908#L196 assume 0 != test_~tmp___2~0; 870#L202-1 assume !(0 != ~pumpRunning~0); 871#L235 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 847#L293 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 848#L267-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 904#L133-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 905#L138-1 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 838#L395-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~1 := 0; 839#L395-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 840#L401-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 886#L271-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 845#L242 havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;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; 923#L93 __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 852#L450 assume 0 != __utac_acc__Specification3_spec__1_~tmp~5; 854#L456-1 [2020-11-29 22:03:12,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:03:12,824 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 22:03:12,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:03:12,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863147131] [2020-11-29 22:03:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:03:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:12,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:12,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:12,960 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:03:12,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:03:12,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2099215608, now seen corresponding path program 1 times [2020-11-29 22:03:12,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:03:12,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364841185] [2020-11-29 22:03:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:03:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:12,974 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:12,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:12,993 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:03:12,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:03:12,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1643144414, now seen corresponding path program 1 times [2020-11-29 22:03:12,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:03:12,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275660292] [2020-11-29 22:03:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:03:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:03:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:03:13,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275660292] [2020-11-29 22:03:13,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:03:13,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:03:13,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342186344] [2020-11-29 22:03:13,239 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-11-29 22:03:13,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:03:13,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:03:13,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:03:13,312 INFO L87 Difference]: Start difference. First operand 207 states and 286 transitions. cyclomatic complexity: 82 Second operand 5 states. [2020-11-29 22:03:13,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:03:13,439 INFO L93 Difference]: Finished difference Result 705 states and 979 transitions. [2020-11-29 22:03:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:03:13,441 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 705 states and 979 transitions. [2020-11-29 22:03:13,451 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 531 [2020-11-29 22:03:13,459 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 705 states to 705 states and 979 transitions. [2020-11-29 22:03:13,459 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 705 [2020-11-29 22:03:13,460 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 705 [2020-11-29 22:03:13,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 705 states and 979 transitions. [2020-11-29 22:03:13,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:03:13,461 INFO L691 BuchiCegarLoop]: Abstraction has 705 states and 979 transitions. [2020-11-29 22:03:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states and 979 transitions. [2020-11-29 22:03:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 408. [2020-11-29 22:03:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-11-29 22:03:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 554 transitions. [2020-11-29 22:03:13,526 INFO L714 BuchiCegarLoop]: Abstraction has 408 states and 554 transitions. [2020-11-29 22:03:13,526 INFO L594 BuchiCegarLoop]: Abstraction has 408 states and 554 transitions. [2020-11-29 22:03:13,526 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 22:03:13,526 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 408 states and 554 transitions. [2020-11-29 22:03:13,529 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 292 [2020-11-29 22:03:13,529 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:03:13,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:03:13,532 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:03:13,532 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, 1] [2020-11-29 22:03:13,532 INFO L794 eck$LassoCheckResult]: Stem: 1877#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1761#L-1 havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~8, main_~tmp~6;havoc main_~retValue_acc~8;havoc main_~tmp~6; 1762#L596 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1763#L604 main_#t~ret45 := valid_product_#res;main_~tmp~6 := main_#t~ret45;havoc main_#t~ret45; 1814#L560 assume 0 != main_~tmp~6; 1817#L534 havoc test_#t~nondet17, test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, 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; 1871#L456-1 [2020-11-29 22:03:13,533 INFO L796 eck$LassoCheckResult]: Loop: 1871#L456-1 assume !false; 2047#L167 assume test_~splverifierCounter~0 < 4; 2048#L168 test_~tmp~0 := test_#t~nondet17;havoc test_#t~nondet17; 2139#L176 assume !(0 != test_~tmp~0); 2137#L176-1 test_~tmp___0~0 := test_#t~nondet18;havoc test_#t~nondet18; 2136#L186 assume !(0 != test_~tmp___0~0); 2135#L186-1 test_~tmp___2~0 := test_#t~nondet19;havoc test_#t~nondet19; 2133#L196 assume 0 != test_~tmp___2~0; 2116#L202-1 assume !(0 != ~pumpRunning~0); 1831#L235 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1779#L293 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1780#L267-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1840#L133-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1841#L138-1 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 1769#L395-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~1 := 0; 1770#L395-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1771#L401-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 1820#L271-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1777#L242 havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;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; 2079#L93 __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 2077#L450 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~5);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; 2075#L125 __utac_acc__Specification3_spec__1_#t~ret43 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~3 := __utac_acc__Specification3_spec__1_#t~ret43;havoc __utac_acc__Specification3_spec__1_#t~ret43; 2055#L456 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3); 1871#L456-1 [2020-11-29 22:03:13,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:03:13,533 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-29 22:03:13,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:03:13,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707400097] [2020-11-29 22:03:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:03:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:13,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:13,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:13,623 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:03:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:03:13,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1288438012, now seen corresponding path program 1 times [2020-11-29 22:03:13,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:03:13,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006185403] [2020-11-29 22:03:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:03:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:13,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:13,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:13,643 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:03:13,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:03:13,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1486191254, now seen corresponding path program 1 times [2020-11-29 22:03:13,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:03:13,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158467297] [2020-11-29 22:03:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:03:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:13,685 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:03:13,729 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:03:13,752 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:03:13,930 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-11-29 22:03:14,060 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-29 22:04:26,097 WARN L193 SmtUtils]: Spent 1.20 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 22:05:18,124 WARN L193 SmtUtils]: Spent 52.02 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 22:05:18,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:05:18 BoogieIcfgContainer [2020-11-29 22:05:18,352 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:05:18,353 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:05:18,353 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:05:18,353 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:05:18,354 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:03:10" (3/4) ... [2020-11-29 22:05:18,357 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 22:05:18,421 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_420e91d2-9388-49a2-b9cb-ccbf4d530b28/bin/uautomizer/witness.graphml [2020-11-29 22:05:18,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:05:18,423 INFO L168 Benchmark]: Toolchain (without parser) took 129608.40 ms. Allocated memory was 88.1 MB in the beginning and 207.6 MB in the end (delta: 119.5 MB). Free memory was 52.8 MB in the beginning and 170.7 MB in the end (delta: -117.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:05:18,426 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 88.1 MB. Free memory was 58.2 MB in the beginning and 58.2 MB in the end (delta: 23.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:05:18,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.01 ms. Allocated memory is still 88.1 MB. Free memory was 52.6 MB in the beginning and 54.3 MB in the end (delta: -1.6 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:05:18,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.97 ms. Allocated memory is still 88.1 MB. Free memory was 54.1 MB in the beginning and 50.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:05:18,427 INFO L168 Benchmark]: Boogie Preprocessor took 77.40 ms. Allocated memory is still 88.1 MB. Free memory was 50.5 MB in the beginning and 48.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:05:18,428 INFO L168 Benchmark]: RCFGBuilder took 1164.06 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 47.8 MB in the beginning and 92.3 MB in the end (delta: -44.5 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:05:18,428 INFO L168 Benchmark]: BuchiAutomizer took 127554.82 ms. Allocated memory was 119.5 MB in the beginning and 207.6 MB in the end (delta: 88.1 MB). Free memory was 92.3 MB in the beginning and 172.8 MB in the end (delta: -80.5 MB). Peak memory consumption was 126.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:05:18,429 INFO L168 Benchmark]: Witness Printer took 69.12 ms. Allocated memory is still 207.6 MB. Free memory was 172.8 MB in the beginning and 170.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:05:18,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 88.1 MB. Free memory was 58.2 MB in the beginning and 58.2 MB in the end (delta: 23.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 656.01 ms. Allocated memory is still 88.1 MB. Free memory was 52.6 MB in the beginning and 54.3 MB in the end (delta: -1.6 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.97 ms. Allocated memory is still 88.1 MB. Free memory was 54.1 MB in the beginning and 50.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.40 ms. Allocated memory is still 88.1 MB. Free memory was 50.5 MB in the beginning and 48.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1164.06 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 47.8 MB in the beginning and 92.3 MB in the end (delta: -44.5 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 127554.82 ms. Allocated memory was 119.5 MB in the beginning and 207.6 MB in the end (delta: 88.1 MB). Free memory was 92.3 MB in the beginning and 172.8 MB in the end (delta: -80.5 MB). Peak memory consumption was 126.0 MB. Max. memory is 16.1 GB. * Witness Printer took 69.12 ms. Allocated memory is still 207.6 MB. Free memory was 172.8 MB in the beginning and 170.7 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 408 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 127.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 126.3s. Construction of modules took 0.4s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 408 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 408 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 605 SDtfs, 1483 SDslu, 1676 SDs, 0 SdLazy, 117 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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: 166]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=14767} State at position 1 is {NULL=0, NULL=14784, NULL=14767, NULL=14771, methaneLevelCritical=0, retValue_acc=1, NULL=0, NULL=14776, NULL=14793, NULL=0, tmp___1=0, NULL=14780, retValue_acc=0, NULL=0, NULL=14794, cleanupTimeShifts=4, tmp=0, tmp=0, NULL=14786, NULL=0, waterLevel=1, NULL=0, tmp___0=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=14790, retValue_acc=1, NULL=0, NULL=0, NULL=0, tmp=1, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=14772, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e1ab8c4=53, NULL=14787, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47a8138a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@355b2143=0, tmp=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@833345d=0, NULL=14789, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@141b2197=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b496a06=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7be91cf8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@fadd1ed=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a034ee1=0, retValue_acc=0, NULL=14773, NULL=14788, tmp___0=0, NULL=0, NULL=0, NULL=14768, NULL=0, NULL=0, NULL=0, tmp=0, NULL=14785, NULL=14779, tmp___0=1, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=14792, \result=1, NULL=0, NULL=14783, \result=0, NULL=0, NULL=14795, \result=0, NULL=14774, NULL=0, NULL=14777, NULL=14770, NULL=14769, NULL=14778, tmp___2=53, splverifierCounter=0, NULL=0, \result=0, NULL=14782, NULL=14791, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f4666ff=0, NULL=14781, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44daaa31=0, NULL=14775} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L227] int pumpRunning = 0; [L228] int systemActive = 1; [L475] int cleanupTimeShifts = 4; [L778] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L551] int retValue_acc ; [L552] int tmp ; [L600] int retValue_acc ; [L603] retValue_acc = 1 [L604] return (retValue_acc); [L558] tmp = valid_product() [L560] COND TRUE \read(tmp) [L157] int splverifierCounter ; [L158] int tmp ; [L159] int tmp___0 ; [L160] int tmp___1 ; [L161] int tmp___2 ; [L164] splverifierCounter = 0 Loop: [L166] COND TRUE 1 [L168] COND TRUE splverifierCounter < 4 [L174] tmp = __VERIFIER_nondet_int() [L176] COND FALSE !(\read(tmp)) [L184] tmp___0 = __VERIFIER_nondet_int() [L186] COND FALSE !(\read(tmp___0)) [L194] tmp___2 = __VERIFIER_nondet_int() [L196] COND TRUE \read(tmp___2) [L235] COND FALSE !(\read(pumpRunning)) [L242] COND TRUE \read(systemActive) [L290] int tmp ; [L293] COND FALSE !(\read(pumpRunning)) [L264] int tmp ; [L267] COND TRUE ! pumpRunning [L387] int retValue_acc ; [L388] int tmp ; [L389] int tmp___0 ; [L130] int retValue_acc ; [L133] COND TRUE waterLevel < 2 [L134] retValue_acc = 1 [L135] return (retValue_acc); [L393] tmp = isHighWaterSensorDry() [L395] COND TRUE \read(tmp) [L396] tmp___0 = 0 [L400] retValue_acc = tmp___0 [L401] return (retValue_acc); [L269] tmp = isHighWaterLevel() [L271] COND FALSE !(\read(tmp)) [L442] int tmp ; [L443] int tmp___0 ; [L444] int tmp___1 ; [L89] int retValue_acc ; [L92] retValue_acc = methaneLevelCritical [L93] return (retValue_acc); [L448] tmp = isMethaneLevelCritical() [L450] COND FALSE !(\read(tmp)) [L121] int retValue_acc ; [L124] retValue_acc = waterLevel [L125] return (retValue_acc); [L454] tmp___0 = getWaterLevel() [L456] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...