./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product61.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_d379b1cf-1df2-4345-ae8b-ae7a67d85187/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/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 9558026aa74bc39759eb2664747acd02f73fafe3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:51:47,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:51:47,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:51:47,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:51:47,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:51:47,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:51:47,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:51:47,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:51:47,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:51:47,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:51:47,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:51:47,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:51:47,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:51:47,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:51:47,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:51:47,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:51:47,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:51:47,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:51:47,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:51:47,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:51:47,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:51:47,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:51:47,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:51:47,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:51:47,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:51:47,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:51:47,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:51:47,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:51:47,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:51:47,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:51:47,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:51:47,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:51:47,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:51:47,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:51:47,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:51:47,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:51:47,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:51:47,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:51:47,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:51:47,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:51:47,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:51:47,248 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 18:51:47,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:51:47,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:51:47,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:51:47,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:51:47,291 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:51:47,291 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 18:51:47,292 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 18:51:47,292 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 18:51:47,292 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 18:51:47,292 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 18:51:47,293 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 18:51:47,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:51:47,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:51:47,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:51:47,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:51:47,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:51:47,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:51:47,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 18:51:47,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 18:51:47,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 18:51:47,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:51:47,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:51:47,296 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 18:51:47,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:51:47,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 18:51:47,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:51:47,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:51:47,297 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 18:51:47,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:51:47,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:51:47,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:51:47,298 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 18:51:47,301 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 18:51:47,301 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_d379b1cf-1df2-4345-ae8b-ae7a67d85187/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9558026aa74bc39759eb2664747acd02f73fafe3 [2020-11-29 18:51:47,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:51:47,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:51:47,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:51:47,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:51:47,597 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:51:47,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c [2020-11-29 18:51:47,680 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/bin/uautomizer/data/d28e8a034/194acc73f18440ad86dfe0864608d438/FLAG07ef26c48 [2020-11-29 18:51:48,228 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:51:48,229 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c [2020-11-29 18:51:48,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/bin/uautomizer/data/d28e8a034/194acc73f18440ad86dfe0864608d438/FLAG07ef26c48 [2020-11-29 18:51:48,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/bin/uautomizer/data/d28e8a034/194acc73f18440ad86dfe0864608d438 [2020-11-29 18:51:48,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:51:48,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:51:48,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:51:48,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:51:48,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:51:48,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:51:48" (1/1) ... [2020-11-29 18:51:48,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e15c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:48, skipping insertion in model container [2020-11-29 18:51:48,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:51:48" (1/1) ... [2020-11-29 18:51:48,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:51:48,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:51:48,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:51:48,998 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:51:49,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:51:49,126 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:51:49,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:49 WrapperNode [2020-11-29 18:51:49,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:51:49,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:51:49,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:51:49,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:51:49,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:49" (1/1) ... [2020-11-29 18:51:49,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:49" (1/1) ... [2020-11-29 18:51:49,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:51:49,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:51:49,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:51:49,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:51:49,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:49" (1/1) ... [2020-11-29 18:51:49,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:49" (1/1) ... [2020-11-29 18:51:49,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:49" (1/1) ... [2020-11-29 18:51:49,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:49" (1/1) ... [2020-11-29 18:51:49,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:49" (1/1) ... [2020-11-29 18:51:49,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:49" (1/1) ... [2020-11-29 18:51:49,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:49" (1/1) ... [2020-11-29 18:51:49,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:51:49,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:51:49,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:51:49,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:51:49,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/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 18:51:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:51:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:51:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:51:49,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:51:50,679 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:51:50,685 INFO L298 CfgBuilder]: Removed 360 assume(true) statements. [2020-11-29 18:51:50,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:51:50 BoogieIcfgContainer [2020-11-29 18:51:50,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:51:50,689 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 18:51:50,690 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 18:51:50,693 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 18:51:50,693 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:51:50,694 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:51:48" (1/3) ... [2020-11-29 18:51:50,695 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69a5c812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:51:50, skipping insertion in model container [2020-11-29 18:51:50,695 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:51:50,696 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:49" (2/3) ... [2020-11-29 18:51:50,696 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69a5c812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:51:50, skipping insertion in model container [2020-11-29 18:51:50,696 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:51:50,696 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:51:50" (3/3) ... [2020-11-29 18:51:50,698 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product61.cil.c [2020-11-29 18:51:50,751 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 18:51:50,751 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 18:51:50,751 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 18:51:50,752 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:51:50,752 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:51:50,752 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 18:51:50,752 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:51:50,752 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 18:51:50,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 231 states. [2020-11-29 18:51:50,802 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 151 [2020-11-29 18:51:50,802 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:51:50,802 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:51:50,810 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 18:51:50,811 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:51:50,811 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 18:51:50,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 231 states. [2020-11-29 18:51:50,822 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 151 [2020-11-29 18:51:50,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:51:50,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:51:50,824 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 18:51:50,824 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:51:50,829 INFO L794 eck$LassoCheckResult]: Stem: 99#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 11#L-1true havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~8, main_~tmp~7;havoc main_~retValue_acc~8;havoc main_~tmp~7; 151#L629true 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; 38#L637true main_#t~ret44 := valid_product_#res;main_~tmp~7 := main_#t~ret44;havoc main_#t~ret44; 228#L559true assume 0 != main_~tmp~7; 9#L533true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, 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; 8#L588-1true [2020-11-29 18:51:50,830 INFO L796 eck$LassoCheckResult]: Loop: 8#L588-1true assume !false; 233#L57true assume test_~splverifierCounter~0 < 4; 201#L58true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 101#L66true assume !(0 != test_~tmp~0); 100#L66-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 20#L76true assume !(0 != test_~tmp___0~0); 16#L76-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 83#L86true assume 0 != test_~tmp___2~0; 31#L92-2true assume !(0 != ~pumpRunning~0); 155#L128true assume !(0 != ~systemActive~0); 210#L135true havoc __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;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~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 91#L405-5true __utac_acc__Specification3_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 39#L582true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 8#L588-1true [2020-11-29 18:51:50,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:50,835 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 18:51:50,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:50,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381138907] [2020-11-29 18:51:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:51,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:51,287 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:51,339 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:51:51,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:51,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1675126795, now seen corresponding path program 1 times [2020-11-29 18:51:51,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:51,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751253621] [2020-11-29 18:51:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:51,358 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:51,375 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:51,381 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:51:51,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:51,382 INFO L82 PathProgramCache]: Analyzing trace with hash 39152143, now seen corresponding path program 1 times [2020-11-29 18:51:51,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:51,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344581583] [2020-11-29 18:51:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:51:51,563 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 18:51:51,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344581583] [2020-11-29 18:51:51,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:51:51,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:51:51,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243044911] [2020-11-29 18:51:51,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:51:51,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:51:51,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:51:51,663 INFO L87 Difference]: Start difference. First operand 231 states. Second operand 6 states. [2020-11-29 18:51:51,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:51:51,929 INFO L93 Difference]: Finished difference Result 228 states and 331 transitions. [2020-11-29 18:51:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:51:51,940 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 331 transitions. [2020-11-29 18:51:51,947 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2020-11-29 18:51:51,955 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 221 states and 324 transitions. [2020-11-29 18:51:51,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 221 [2020-11-29 18:51:51,958 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 221 [2020-11-29 18:51:51,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 324 transitions. [2020-11-29 18:51:51,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:51:51,961 INFO L691 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2020-11-29 18:51:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states and 324 transitions. [2020-11-29 18:51:52,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2020-11-29 18:51:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-11-29 18:51:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 324 transitions. [2020-11-29 18:51:52,006 INFO L714 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2020-11-29 18:51:52,007 INFO L594 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2020-11-29 18:51:52,007 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 18:51:52,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 221 states and 324 transitions. [2020-11-29 18:51:52,010 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2020-11-29 18:51:52,011 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:51:52,011 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:51:52,012 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 18:51:52,012 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:51:52,012 INFO L794 eck$LassoCheckResult]: Stem: 630#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 494#L-1 havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~8, main_~tmp~7;havoc main_~retValue_acc~8;havoc main_~tmp~7; 495#L629 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; 556#L637 main_#t~ret44 := valid_product_#res;main_~tmp~7 := main_#t~ret44;havoc main_#t~ret44; 557#L559 assume 0 != main_~tmp~7; 490#L533 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, 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; 487#L588-1 [2020-11-29 18:51:52,013 INFO L796 eck$LassoCheckResult]: Loop: 487#L588-1 assume !false; 489#L57 assume test_~splverifierCounter~0 < 4; 695#L58 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 631#L66 assume !(0 != test_~tmp~0); 629#L66-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 516#L76 assume !(0 != test_~tmp___0~0); 506#L76-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 507#L86 assume 0 != test_~tmp___2~0; 541#L92-2 assume !(0 != ~pumpRunning~0); 542#L128 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 678#L212 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 532#L186-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 533#L160-3 assume !(0 == ~pumpRunning~0); 514#L135 havoc __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;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~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 622#L405-5 __utac_acc__Specification3_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 558#L582 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 487#L588-1 [2020-11-29 18:51:52,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:52,013 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 18:51:52,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:52,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801369926] [2020-11-29 18:51:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:52,080 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:52,134 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:52,154 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:51:52,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:52,155 INFO L82 PathProgramCache]: Analyzing trace with hash 391395508, now seen corresponding path program 1 times [2020-11-29 18:51:52,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:52,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280073984] [2020-11-29 18:51:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:51:52,175 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 18:51:52,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280073984] [2020-11-29 18:51:52,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:51:52,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:51:52,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780112996] [2020-11-29 18:51:52,177 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 18:51:52,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:51:52,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:51:52,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:51:52,178 INFO L87 Difference]: Start difference. First operand 221 states and 324 transitions. cyclomatic complexity: 105 Second operand 3 states. [2020-11-29 18:51:52,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:51:52,390 INFO L93 Difference]: Finished difference Result 223 states and 309 transitions. [2020-11-29 18:51:52,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:51:52,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 309 transitions. [2020-11-29 18:51:52,395 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2020-11-29 18:51:52,399 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 223 states and 309 transitions. [2020-11-29 18:51:52,400 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 223 [2020-11-29 18:51:52,400 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 223 [2020-11-29 18:51:52,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 223 states and 309 transitions. [2020-11-29 18:51:52,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:51:52,403 INFO L691 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2020-11-29 18:51:52,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states and 309 transitions. [2020-11-29 18:51:52,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-11-29 18:51:52,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-11-29 18:51:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 309 transitions. [2020-11-29 18:51:52,427 INFO L714 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2020-11-29 18:51:52,427 INFO L594 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2020-11-29 18:51:52,427 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 18:51:52,427 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 223 states and 309 transitions. [2020-11-29 18:51:52,432 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2020-11-29 18:51:52,432 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:51:52,432 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:51:52,437 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 18:51:52,437 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:51:52,438 INFO L794 eck$LassoCheckResult]: Stem: 1100#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 949#L-1 havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~8, main_~tmp~7;havoc main_~retValue_acc~8;havoc main_~tmp~7; 950#L629 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; 1013#L637 main_#t~ret44 := valid_product_#res;main_~tmp~7 := main_#t~ret44;havoc main_#t~ret44; 1019#L559 assume 0 != main_~tmp~7; 942#L533 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, 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; 937#L588-1 [2020-11-29 18:51:52,440 INFO L796 eck$LassoCheckResult]: Loop: 937#L588-1 assume !false; 941#L57 assume test_~splverifierCounter~0 < 4; 1091#L58 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 1092#L66 assume !(0 != test_~tmp~0); 1099#L66-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 977#L76 assume !(0 != test_~tmp___0~0); 966#L76-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 967#L86 assume 0 != test_~tmp___2~0; 999#L92-2 assume !(0 != ~pumpRunning~0); 1000#L128 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1018#L212 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 992#L186-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 993#L160-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1076#L445-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1015#L450-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 1016#L331-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 1041#L331-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1002#L337-3 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 974#L164-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 975#L135 havoc __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;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~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 1088#L405-5 __utac_acc__Specification3_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 1026#L582 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 937#L588-1 [2020-11-29 18:51:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:52,440 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 18:51:52,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:52,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123178637] [2020-11-29 18:51:52,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:52,514 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:52,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:52,591 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:51:52,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:52,601 INFO L82 PathProgramCache]: Analyzing trace with hash 697809952, now seen corresponding path program 1 times [2020-11-29 18:51:52,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:52,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653361803] [2020-11-29 18:51:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:52,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:52,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:52,630 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:51:52,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:52,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1951115078, now seen corresponding path program 1 times [2020-11-29 18:51:52,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:52,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16052279] [2020-11-29 18:51:52,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:51:52,781 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 18:51:52,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16052279] [2020-11-29 18:51:52,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:51:52,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:51:52,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521282796] [2020-11-29 18:51:52,931 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-11-29 18:51:53,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:51:53,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:51:53,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:51:53,007 INFO L87 Difference]: Start difference. First operand 223 states and 309 transitions. cyclomatic complexity: 88 Second operand 5 states. [2020-11-29 18:51:53,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:51:53,375 INFO L93 Difference]: Finished difference Result 747 states and 1037 transitions. [2020-11-29 18:51:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 18:51:53,376 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 747 states and 1037 transitions. [2020-11-29 18:51:53,386 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 532 [2020-11-29 18:51:53,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 747 states to 747 states and 1037 transitions. [2020-11-29 18:51:53,395 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 747 [2020-11-29 18:51:53,397 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 747 [2020-11-29 18:51:53,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 747 states and 1037 transitions. [2020-11-29 18:51:53,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:51:53,404 INFO L691 BuchiCegarLoop]: Abstraction has 747 states and 1037 transitions. [2020-11-29 18:51:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states and 1037 transitions. [2020-11-29 18:51:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 440. [2020-11-29 18:51:53,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-11-29 18:51:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 604 transitions. [2020-11-29 18:51:53,446 INFO L714 BuchiCegarLoop]: Abstraction has 440 states and 604 transitions. [2020-11-29 18:51:53,447 INFO L594 BuchiCegarLoop]: Abstraction has 440 states and 604 transitions. [2020-11-29 18:51:53,447 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 18:51:53,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 440 states and 604 transitions. [2020-11-29 18:51:53,453 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 304 [2020-11-29 18:51:53,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:51:53,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:51:53,454 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 18:51:53,454 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, 1] [2020-11-29 18:51:53,454 INFO L794 eck$LassoCheckResult]: Stem: 2109#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1938#L-1 havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~8, main_~tmp~7;havoc main_~retValue_acc~8;havoc main_~tmp~7; 1939#L629 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; 2005#L637 main_#t~ret44 := valid_product_#res;main_~tmp~7 := main_#t~ret44;havoc main_#t~ret44; 2012#L559 assume 0 != main_~tmp~7; 1930#L533 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, 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; 1925#L588-1 [2020-11-29 18:51:53,455 INFO L796 eck$LassoCheckResult]: Loop: 1925#L588-1 assume !false; 1929#L57 assume test_~splverifierCounter~0 < 4; 2095#L58 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 2096#L66 assume !(0 != test_~tmp~0); 2106#L66-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 1966#L76 assume !(0 != test_~tmp___0~0); 1955#L76-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 1956#L86 assume 0 != test_~tmp___2~0; 1989#L92-2 assume !(0 != ~pumpRunning~0); 1990#L128 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 2010#L212 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 1981#L186-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1982#L160-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 2078#L445-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 2007#L450-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 2008#L331-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 2040#L331-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1993#L337-3 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 1963#L164-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1964#L135 havoc __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;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~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 2092#L405-5 __utac_acc__Specification3_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 2022#L582 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 2023#L437 __utac_acc__Specification3_spec__1_#t~ret46 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~3 := __utac_acc__Specification3_spec__1_#t~ret46;havoc __utac_acc__Specification3_spec__1_#t~ret46; 1924#L588 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3); 1925#L588-1 [2020-11-29 18:51:53,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:53,456 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-29 18:51:53,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:53,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751079710] [2020-11-29 18:51:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:53,506 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:53,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:53,562 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:51:53,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:53,563 INFO L82 PathProgramCache]: Analyzing trace with hash 580478420, now seen corresponding path program 1 times [2020-11-29 18:51:53,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:53,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970582564] [2020-11-29 18:51:53,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:53,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:53,579 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:53,584 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:51:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:53,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1879105670, now seen corresponding path program 1 times [2020-11-29 18:51:53,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:53,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968220773] [2020-11-29 18:51:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:53,632 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:53,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:53,705 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:51:53,923 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-11-29 18:53:18,624 WARN L193 SmtUtils]: Spent 1.41 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 18:54:13,973 WARN L193 SmtUtils]: Spent 55.34 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 18:54:14,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:54:14 BoogieIcfgContainer [2020-11-29 18:54:14,105 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 18:54:14,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:54:14,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:54:14,106 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:54:14,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:51:50" (3/4) ... [2020-11-29 18:54:14,110 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 18:54:14,173 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d379b1cf-1df2-4345-ae8b-ae7a67d85187/bin/uautomizer/witness.graphml [2020-11-29 18:54:14,174 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:54:14,175 INFO L168 Benchmark]: Toolchain (without parser) took 145601.33 ms. Allocated memory was 83.9 MB in the beginning and 163.6 MB in the end (delta: 79.7 MB). Free memory was 48.9 MB in the beginning and 118.3 MB in the end (delta: -69.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:54:14,176 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 83.9 MB. Free memory was 57.2 MB in the beginning and 57.2 MB in the end (delta: 31.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:54:14,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 551.00 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 48.7 MB in the beginning and 71.1 MB in the end (delta: -22.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:54:14,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 135.24 ms. Allocated memory is still 104.9 MB. Free memory was 71.1 MB in the beginning and 65.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:54:14,185 INFO L168 Benchmark]: Boogie Preprocessor took 125.87 ms. Allocated memory is still 104.9 MB. Free memory was 65.3 MB in the beginning and 61.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:54:14,186 INFO L168 Benchmark]: RCFGBuilder took 1295.26 ms. Allocated memory is still 104.9 MB. Free memory was 61.5 MB in the beginning and 58.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:54:14,187 INFO L168 Benchmark]: BuchiAutomizer took 143415.66 ms. Allocated memory was 104.9 MB in the beginning and 163.6 MB in the end (delta: 58.7 MB). Free memory was 58.3 MB in the beginning and 121.4 MB in the end (delta: -63.1 MB). Peak memory consumption was 81.8 MB. Max. memory is 16.1 GB. [2020-11-29 18:54:14,188 INFO L168 Benchmark]: Witness Printer took 68.32 ms. Allocated memory is still 163.6 MB. Free memory was 120.4 MB in the beginning and 118.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:54:14,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 83.9 MB. Free memory was 57.2 MB in the beginning and 57.2 MB in the end (delta: 31.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 551.00 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 48.7 MB in the beginning and 71.1 MB in the end (delta: -22.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 135.24 ms. Allocated memory is still 104.9 MB. Free memory was 71.1 MB in the beginning and 65.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 125.87 ms. Allocated memory is still 104.9 MB. Free memory was 65.3 MB in the beginning and 61.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1295.26 ms. Allocated memory is still 104.9 MB. Free memory was 61.5 MB in the beginning and 58.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 143415.66 ms. Allocated memory was 104.9 MB in the beginning and 163.6 MB in the end (delta: 58.7 MB). Free memory was 58.3 MB in the beginning and 121.4 MB in the end (delta: -63.1 MB). Peak memory consumption was 81.8 MB. Max. memory is 16.1 GB. * Witness Printer took 68.32 ms. Allocated memory is still 163.6 MB. Free memory was 120.4 MB in the beginning and 118.3 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 440 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 143.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 142.1s. Construction of modules took 0.5s. 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 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 307 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 440 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 914 SDtfs, 2173 SDslu, 1205 SDs, 0 SdLazy, 209 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s 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: 56]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=17545} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ebdf067=74, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@9810bb1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56199309=0, NULL=17545, NULL=17565, NULL=0, NULL=17567, NULL=0, methaneLevelCritical=0, NULL=17570, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3128d807=0, retValue_acc=1, NULL=0, retValue_acc=0, NULL=17561, NULL=0, tmp___1=0, NULL=17555, NULL=17551, NULL=0, NULL=17559, cleanupTimeShifts=4, tmp=0, tmp=0, NULL=17549, NULL=0, NULL=0, waterLevel=1, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=0, NULL=0, tmp=1, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59f7bbd8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56cd2c65=0, NULL=17568, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@228c2417=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d8f0867=0, tmp=0, head=0, NULL=17554, NULL=0, NULL=0, NULL=0, NULL=17571, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12c7151a=0, retValue_acc=0, NULL=0, NULL=17566, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5239333e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58503230=0, NULL=17560, NULL=0, tmp___0=0, NULL=0, NULL=17569, NULL=17557, NULL=0, tmp=0, NULL=17552, NULL=17556, tmp___0=1, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=17564, \result=1, \result=0, retValue_acc=0, NULL=17547, \result=0, NULL=17546, NULL=0, NULL=17558, NULL=0, NULL=17563, NULL=17573, NULL=17553, tmp___2=74, splverifierCounter=0, NULL=0, \result=0, NULL=17548, NULL=17562, NULL=17572, tmp___1=0, NULL=17550, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3f0016bb=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L362] int waterLevel = 1; [L363] int methaneLevelCritical = 0; [L474] int cleanupTimeShifts = 4; [L811] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L550] int retValue_acc ; [L551] int tmp ; [L633] int retValue_acc ; [L636] retValue_acc = 1 [L637] return (retValue_acc); [L557] tmp = valid_product() [L559] COND TRUE \read(tmp) [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 Loop: [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L128] COND FALSE !(\read(pumpRunning)) [L135] COND TRUE \read(systemActive) [L209] int tmp ; [L212] COND FALSE !(\read(pumpRunning)) [L183] int tmp ; [L186] COND FALSE !(\read(pumpRunning)) [L157] int tmp ; [L160] COND TRUE ! pumpRunning [L323] int retValue_acc ; [L324] int tmp ; [L325] int tmp___0 ; [L442] int retValue_acc ; [L445] COND TRUE waterLevel < 2 [L446] retValue_acc = 1 [L447] return (retValue_acc); [L329] tmp = isHighWaterSensorDry() [L331] COND TRUE \read(tmp) [L332] tmp___0 = 0 [L336] retValue_acc = tmp___0 [L337] return (retValue_acc); [L162] tmp = isHighWaterLevel() [L164] COND FALSE !(\read(tmp)) [L574] int tmp ; [L575] int tmp___0 ; [L576] int tmp___1 ; [L401] int retValue_acc ; [L404] retValue_acc = methaneLevelCritical [L405] return (retValue_acc); [L580] tmp = isMethaneLevelCritical() [L582] COND FALSE !(\read(tmp)) [L433] int retValue_acc ; [L436] retValue_acc = waterLevel [L437] return (retValue_acc); [L586] tmp___0 = getWaterLevel() [L588] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...