./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product47.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_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product47.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/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 8feac72f23ce01778f11b22abb44ce4ccfa4081c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:20:48,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:20:48,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:20:48,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:20:48,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:20:48,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:20:48,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:20:48,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:20:48,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:20:48,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:20:48,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:20:48,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:20:48,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:20:48,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:20:48,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:20:48,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:20:48,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:20:48,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:20:48,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:20:48,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:20:48,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:20:48,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:20:48,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:20:48,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:20:48,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:20:48,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:20:48,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:20:48,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:20:48,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:20:48,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:20:48,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:20:48,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:20:48,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:20:48,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:20:48,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:20:48,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:20:48,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:20:48,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:20:48,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:20:48,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:20:48,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:20:48,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:20:49,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:20:49,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:20:49,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:20:49,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:20:49,013 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:20:49,014 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:20:49,014 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:20:49,014 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:20:49,015 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:20:49,015 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:20:49,015 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:20:49,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:20:49,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:20:49,016 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:20:49,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:20:49,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:20:49,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:20:49,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:20:49,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:20:49,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:20:49,018 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:20:49,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:20:49,019 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:20:49,019 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:20:49,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:20:49,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:20:49,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:20:49,020 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:20:49,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:20:49,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:20:49,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:20:49,021 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:20:49,023 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:20:49,023 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_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8feac72f23ce01778f11b22abb44ce4ccfa4081c [2020-11-30 00:20:49,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:20:49,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:20:49,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:20:49,362 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:20:49,363 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:20:49,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec5_product47.cil.c [2020-11-30 00:20:49,451 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer/data/672406e1c/fb725009cb7a40e9a7a9498b300273b0/FLAG78f5f478e [2020-11-30 00:20:50,068 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:20:50,069 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/sv-benchmarks/c/product-lines/minepump_spec5_product47.cil.c [2020-11-30 00:20:50,099 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer/data/672406e1c/fb725009cb7a40e9a7a9498b300273b0/FLAG78f5f478e [2020-11-30 00:20:50,326 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer/data/672406e1c/fb725009cb7a40e9a7a9498b300273b0 [2020-11-30 00:20:50,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:20:50,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:20:50,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:20:50,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:20:50,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:20:50,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:20:50" (1/1) ... [2020-11-30 00:20:50,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684f0d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50, skipping insertion in model container [2020-11-30 00:20:50,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:20:50" (1/1) ... [2020-11-30 00:20:50,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:20:50,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:20:50,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:20:50,784 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:20:50,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:20:50,955 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:20:50,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50 WrapperNode [2020-11-30 00:20:50,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:20:50,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:20:50,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:20:50,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:20:50,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50" (1/1) ... [2020-11-30 00:20:50,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50" (1/1) ... [2020-11-30 00:20:51,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:20:51,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:20:51,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:20:51,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:20:51,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50" (1/1) ... [2020-11-30 00:20:51,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50" (1/1) ... [2020-11-30 00:20:51,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50" (1/1) ... [2020-11-30 00:20:51,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50" (1/1) ... [2020-11-30 00:20:51,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50" (1/1) ... [2020-11-30 00:20:51,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50" (1/1) ... [2020-11-30 00:20:51,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50" (1/1) ... [2020-11-30 00:20:51,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:20:51,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:20:51,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:20:51,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:20:51,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:20:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:20:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:20:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:20:51,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:20:52,942 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:20:52,942 INFO L298 CfgBuilder]: Removed 216 assume(true) statements. [2020-11-30 00:20:52,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:52 BoogieIcfgContainer [2020-11-30 00:20:52,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:20:52,946 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:20:52,946 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:20:52,950 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:20:52,951 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:20:52,951 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:20:50" (1/3) ... [2020-11-30 00:20:52,953 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49a598d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:20:52, skipping insertion in model container [2020-11-30 00:20:52,953 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:20:52,954 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:50" (2/3) ... [2020-11-30 00:20:52,954 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49a598d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:20:52, skipping insertion in model container [2020-11-30 00:20:52,954 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:20:52,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:52" (3/3) ... [2020-11-30 00:20:52,956 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product47.cil.c [2020-11-30 00:20:53,018 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:20:53,019 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:20:53,019 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:20:53,020 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:20:53,020 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:20:53,020 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:20:53,020 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:20:53,020 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:20:53,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 140 states. [2020-11-30 00:20:53,090 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 91 [2020-11-30 00:20:53,090 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:20:53,090 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:20:53,100 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:53,100 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:53,101 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:20:53,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 140 states. [2020-11-30 00:20:53,110 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 91 [2020-11-30 00:20:53,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:20:53,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:20:53,112 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:53,113 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:53,119 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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 7#L-1true havoc main_#res;havoc main_#t~ret32, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 30#L835true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 48#L843true main_#t~ret32 := valid_product_#res;main_~tmp~5 := main_#t~ret32;havoc main_#t~ret32; 36#L433true assume 0 != main_~tmp~5; 76#L405true ~switchedOnBeforeTS~0 := 0; 3#L855true havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 49#L876-1true [2020-11-30 00:20:53,120 INFO L796 eck$LassoCheckResult]: Loop: 49#L876-1true assume !false; 37#L290true assume test_~splverifierCounter~0 < 4; 139#L291true test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 10#L299true assume !(0 != test_~tmp~4); 8#L299-1true test_~tmp___0~1 := test_#t~nondet29;havoc test_#t~nondet29; 52#L309true assume !(0 != test_~tmp___0~1); 32#L309-1true test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 119#L319true assume 0 != test_~tmp___2~0; 62#L325-1true havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 78#L201true __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 46#L865true assume !(0 != ~pumpRunning~0); 6#L73true assume !(0 != ~systemActive~0); 65#L80true havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 18#L973true __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 45#L876true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 49#L876-1true [2020-11-30 00:20:53,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-30 00:20:53,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:53,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74454603] [2020-11-30 00:20:53,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:53,506 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:53,669 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:53,735 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:20:53,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:53,747 INFO L82 PathProgramCache]: Analyzing trace with hash -239583081, now seen corresponding path program 1 times [2020-11-30 00:20:53,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:53,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211491461] [2020-11-30 00:20:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:53,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:53,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:53,796 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:20:53,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:53,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1694442129, now seen corresponding path program 1 times [2020-11-30 00:20:53,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:53,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608782617] [2020-11-30 00:20:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:54,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608782617] [2020-11-30 00:20:54,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:54,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:20:54,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101693140] [2020-11-30 00:20:54,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:54,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:20:54,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:20:54,261 INFO L87 Difference]: Start difference. First operand 140 states. Second operand 6 states. [2020-11-30 00:20:54,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:54,663 INFO L93 Difference]: Finished difference Result 325 states and 460 transitions. [2020-11-30 00:20:54,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:20:54,666 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 325 states and 460 transitions. [2020-11-30 00:20:54,678 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 211 [2020-11-30 00:20:54,687 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 325 states to 304 states and 439 transitions. [2020-11-30 00:20:54,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 304 [2020-11-30 00:20:54,696 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 304 [2020-11-30 00:20:54,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 304 states and 439 transitions. [2020-11-30 00:20:54,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:20:54,704 INFO L691 BuchiCegarLoop]: Abstraction has 304 states and 439 transitions. [2020-11-30 00:20:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states and 439 transitions. [2020-11-30 00:20:54,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 179. [2020-11-30 00:20:54,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-11-30 00:20:54,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 257 transitions. [2020-11-30 00:20:54,770 INFO L714 BuchiCegarLoop]: Abstraction has 179 states and 257 transitions. [2020-11-30 00:20:54,770 INFO L594 BuchiCegarLoop]: Abstraction has 179 states and 257 transitions. [2020-11-30 00:20:54,770 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:20:54,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 179 states and 257 transitions. [2020-11-30 00:20:54,773 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 124 [2020-11-30 00:20:54,774 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:20:54,775 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:20:54,776 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:54,776 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:54,776 INFO L794 eck$LassoCheckResult]: Stem: 593#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 491#L-1 havoc main_#res;havoc main_#t~ret32, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 492#L835 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 534#L843 main_#t~ret32 := valid_product_#res;main_~tmp~5 := main_#t~ret32;havoc main_#t~ret32; 543#L433 assume 0 != main_~tmp~5; 544#L405 ~switchedOnBeforeTS~0 := 0; 483#L855 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 484#L876-1 [2020-11-30 00:20:54,776 INFO L796 eck$LassoCheckResult]: Loop: 484#L876-1 assume !false; 545#L290 assume test_~splverifierCounter~0 < 4; 546#L291 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 498#L299 assume !(0 != test_~tmp~4); 493#L299-1 test_~tmp___0~1 := test_#t~nondet29;havoc test_#t~nondet29; 494#L309 assume !(0 != test_~tmp___0~1); 537#L309-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 538#L319 assume 0 != test_~tmp___2~0; 566#L325-1 havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 567#L201 __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 554#L865 assume !(0 != ~pumpRunning~0); 489#L73 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 490#L131 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret7, processEnvironment__wrappee__methaneQuery_~tmp~0;havoc processEnvironment__wrappee__methaneQuery_~tmp~0; 512#L105-1 assume !(0 == ~pumpRunning~0); 505#L80 havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 513#L973 __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 514#L876 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 484#L876-1 [2020-11-30 00:20:54,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:54,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-30 00:20:54,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:54,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794014859] [2020-11-30 00:20:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:54,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:54,975 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:55,009 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:20:55,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:55,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1391395367, now seen corresponding path program 1 times [2020-11-30 00:20:55,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:55,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219005370] [2020-11-30 00:20:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:55,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219005370] [2020-11-30 00:20:55,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:55,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:20:55,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339760802] [2020-11-30 00:20:55,031 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:20:55,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:55,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:20:55,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:20:55,032 INFO L87 Difference]: Start difference. First operand 179 states and 257 transitions. cyclomatic complexity: 81 Second operand 3 states. [2020-11-30 00:20:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:55,233 INFO L93 Difference]: Finished difference Result 226 states and 308 transitions. [2020-11-30 00:20:55,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:20:55,234 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 226 states and 308 transitions. [2020-11-30 00:20:55,238 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 160 [2020-11-30 00:20:55,241 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 226 states to 226 states and 308 transitions. [2020-11-30 00:20:55,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 226 [2020-11-30 00:20:55,242 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 226 [2020-11-30 00:20:55,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 226 states and 308 transitions. [2020-11-30 00:20:55,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:20:55,243 INFO L691 BuchiCegarLoop]: Abstraction has 226 states and 308 transitions. [2020-11-30 00:20:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states and 308 transitions. [2020-11-30 00:20:55,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-30 00:20:55,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-30 00:20:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 308 transitions. [2020-11-30 00:20:55,274 INFO L714 BuchiCegarLoop]: Abstraction has 226 states and 308 transitions. [2020-11-30 00:20:55,274 INFO L594 BuchiCegarLoop]: Abstraction has 226 states and 308 transitions. [2020-11-30 00:20:55,274 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:20:55,275 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 226 states and 308 transitions. [2020-11-30 00:20:55,277 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 160 [2020-11-30 00:20:55,279 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:20:55,279 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:20:55,282 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:55,282 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:55,284 INFO L794 eck$LassoCheckResult]: Stem: 1012#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 902#L-1 havoc main_#res;havoc main_#t~ret32, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 903#L835 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 945#L843 main_#t~ret32 := valid_product_#res;main_~tmp~5 := main_#t~ret32;havoc main_#t~ret32; 954#L433 assume 0 != main_~tmp~5; 955#L405 ~switchedOnBeforeTS~0 := 0; 894#L855 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 895#L876-1 [2020-11-30 00:20:55,286 INFO L796 eck$LassoCheckResult]: Loop: 895#L876-1 assume !false; 956#L290 assume test_~splverifierCounter~0 < 4; 957#L291 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 909#L299 assume !(0 != test_~tmp~4); 904#L299-1 test_~tmp___0~1 := test_#t~nondet29;havoc test_#t~nondet29; 905#L309 assume !(0 != test_~tmp___0~1); 948#L309-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 949#L319 assume 0 != test_~tmp___2~0; 980#L325-1 havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 981#L201 __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 967#L865 assume !(0 != ~pumpRunning~0); 900#L73 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 901#L131 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret7, processEnvironment__wrappee__methaneQuery_~tmp~0;havoc processEnvironment__wrappee__methaneQuery_~tmp~0; 920#L105-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 929#L981-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 930#L986-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 958#L250-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 1033#L250-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1010#L256-1 processEnvironment__wrappee__methaneQuery_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~0 := processEnvironment__wrappee__methaneQuery_#t~ret7;havoc processEnvironment__wrappee__methaneQuery_#t~ret7; 914#L109-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~0); 915#L80 havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 1108#L973 __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 963#L876 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 895#L876-1 [2020-11-30 00:20:55,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:55,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-30 00:20:55,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:55,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664870234] [2020-11-30 00:20:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:55,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:55,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:55,395 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:20:55,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:55,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1936550107, now seen corresponding path program 1 times [2020-11-30 00:20:55,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:55,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587902531] [2020-11-30 00:20:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:55,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587902531] [2020-11-30 00:20:55,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:55,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:20:55,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052855467] [2020-11-30 00:20:55,452 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:20:55,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:55,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:20:55,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:20:55,453 INFO L87 Difference]: Start difference. First operand 226 states and 308 transitions. cyclomatic complexity: 85 Second operand 5 states. [2020-11-30 00:20:55,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:55,852 INFO L93 Difference]: Finished difference Result 925 states and 1267 transitions. [2020-11-30 00:20:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:20:55,853 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 925 states and 1267 transitions. [2020-11-30 00:20:55,864 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 647 [2020-11-30 00:20:55,875 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 925 states to 925 states and 1267 transitions. [2020-11-30 00:20:55,875 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 925 [2020-11-30 00:20:55,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 925 [2020-11-30 00:20:55,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 925 states and 1267 transitions. [2020-11-30 00:20:55,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:20:55,879 INFO L691 BuchiCegarLoop]: Abstraction has 925 states and 1267 transitions. [2020-11-30 00:20:55,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states and 1267 transitions. [2020-11-30 00:20:55,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 442. [2020-11-30 00:20:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-11-30 00:20:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 594 transitions. [2020-11-30 00:20:55,919 INFO L714 BuchiCegarLoop]: Abstraction has 442 states and 594 transitions. [2020-11-30 00:20:55,919 INFO L594 BuchiCegarLoop]: Abstraction has 442 states and 594 transitions. [2020-11-30 00:20:55,919 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:20:55,919 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 442 states and 594 transitions. [2020-11-30 00:20:55,923 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 318 [2020-11-30 00:20:55,923 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:20:55,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:20:55,926 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:55,926 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, 1] [2020-11-30 00:20:55,927 INFO L794 eck$LassoCheckResult]: Stem: 2196#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 2072#L-1 havoc main_#res;havoc main_#t~ret32, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 2073#L835 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 2118#L843 main_#t~ret32 := valid_product_#res;main_~tmp~5 := main_#t~ret32;havoc main_#t~ret32; 2128#L433 assume 0 != main_~tmp~5; 2129#L405 ~switchedOnBeforeTS~0 := 0; 2064#L855 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2065#L876-1 [2020-11-30 00:20:55,927 INFO L796 eck$LassoCheckResult]: Loop: 2065#L876-1 assume !false; 2130#L290 assume test_~splverifierCounter~0 < 4; 2131#L291 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 2455#L299 assume !(0 != test_~tmp~4); 2452#L299-1 test_~tmp___0~1 := test_#t~nondet29;havoc test_#t~nondet29; 2451#L309 assume !(0 != test_~tmp___0~1); 2449#L309-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 2419#L319 assume 0 != test_~tmp___2~0; 2403#L325-1 havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2402#L201 __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 2382#L865 assume !(0 != ~pumpRunning~0); 2070#L73 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 2071#L131 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret7, processEnvironment__wrappee__methaneQuery_~tmp~0;havoc processEnvironment__wrappee__methaneQuery_~tmp~0; 2090#L105-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 2100#L981-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 2101#L986-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 2132#L250-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 2217#L250-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2194#L256-1 processEnvironment__wrappee__methaneQuery_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~0 := processEnvironment__wrappee__methaneQuery_#t~ret7;havoc processEnvironment__wrappee__methaneQuery_#t~ret7; 2084#L109-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~0); 2085#L80 havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 2091#L973 __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 2092#L876 assume 2 != __utac_acc__Specification5_spec__3_~tmp~9;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2137#L201-1 __utac_acc__Specification5_spec__3_#t~ret71 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret71;havoc __utac_acc__Specification5_spec__3_#t~ret71; 2226#L880 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 2065#L876-1 [2020-11-30 00:20:55,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:55,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2020-11-30 00:20:55,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:55,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504574633] [2020-11-30 00:20:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:56,010 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:56,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:56,078 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:20:56,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:56,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1303826976, now seen corresponding path program 1 times [2020-11-30 00:20:56,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:56,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22993513] [2020-11-30 00:20:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:56,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:56,100 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:56,106 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:20:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:56,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1367253158, now seen corresponding path program 1 times [2020-11-30 00:20:56,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:56,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317910092] [2020-11-30 00:20:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:56,173 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:56,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:56,252 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:20:56,559 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-11-30 00:22:24,524 WARN L193 SmtUtils]: Spent 1.46 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-30 00:23:23,770 WARN L193 SmtUtils]: Spent 59.21 s on a formula simplification that was a NOOP. DAG size: 435 [2020-11-30 00:23:24,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:23:24 BoogieIcfgContainer [2020-11-30 00:23:24,032 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:23:24,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:23:24,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:23:24,033 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:23:24,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:52" (3/4) ... [2020-11-30 00:23:24,036 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:23:24,135 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_043815a6-3f53-4a8f-a1ea-6e118ebd78ca/bin/uautomizer/witness.graphml [2020-11-30 00:23:24,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:23:24,140 INFO L168 Benchmark]: Toolchain (without parser) took 153809.65 ms. Allocated memory was 88.1 MB in the beginning and 163.6 MB in the end (delta: 75.5 MB). Free memory was 55.2 MB in the beginning and 92.3 MB in the end (delta: -37.1 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:24,142 INFO L168 Benchmark]: CDTParser took 0.94 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 44.9 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:23:24,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.70 ms. Allocated memory is still 88.1 MB. Free memory was 54.9 MB in the beginning and 53.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:24,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.01 ms. Allocated memory is still 88.1 MB. Free memory was 53.7 MB in the beginning and 49.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:24,145 INFO L168 Benchmark]: Boogie Preprocessor took 111.04 ms. Allocated memory is still 88.1 MB. Free memory was 49.9 MB in the beginning and 46.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:24,145 INFO L168 Benchmark]: RCFGBuilder took 1775.60 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 46.8 MB in the beginning and 72.5 MB in the end (delta: -25.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:24,146 INFO L168 Benchmark]: BuchiAutomizer took 151085.53 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 72.5 MB in the beginning and 95.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:24,154 INFO L168 Benchmark]: Witness Printer took 106.42 ms. Allocated memory is still 163.6 MB. Free memory was 95.5 MB in the beginning and 92.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:24,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 44.9 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 624.70 ms. Allocated memory is still 88.1 MB. Free memory was 54.9 MB in the beginning and 53.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.01 ms. Allocated memory is still 88.1 MB. Free memory was 53.7 MB in the beginning and 49.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 111.04 ms. Allocated memory is still 88.1 MB. Free memory was 49.9 MB in the beginning and 46.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1775.60 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 46.8 MB in the beginning and 72.5 MB in the end (delta: -25.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 151085.53 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 72.5 MB in the beginning and 95.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.1 GB. * Witness Printer took 106.42 ms. Allocated memory is still 163.6 MB. Free memory was 95.5 MB in the beginning and 92.3 MB in the end (delta: 3.1 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 442 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 150.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 149.6s. Construction of modules took 0.6s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 608 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 442 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 663 SDtfs, 1802 SDslu, 1777 SDs, 0 SdLazy, 209 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 289]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=4464} State at position 1 is {NULL=0, NULL=0, NULL=32812, NULL=0, retValue_acc=1, NULL=4464, NULL=0, NULL=32817, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67c3cbbb=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b6bf342=0, NULL=32816, methaneLevelCritical=0, tmp=0, retValue_acc=0, tmp___1=0, NULL=0, NULL=32823, cleanupTimeShifts=4, NULL=4470, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73acc872=0, NULL=32828, \result=1, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73502d57=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55c2bc24=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c5dd4ec=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c17045c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76548cef=0, tmp=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5dc8a6a6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f22ecc8=47, NULL=4468, NULL=0, tmp=1, NULL=0, NULL=32813, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c7e5e6f=0, NULL=0, tmp___0=0, NULL=32815, NULL=32822, tmp=0, head=0, NULL=0, tmp=0, NULL=4466, NULL=32824, NULL=0, retValue_acc=0, NULL=0, NULL=32825, NULL=32829, tmp=1, tmp___0=0, NULL=0, NULL=0, switchedOnBeforeTS=0, \result=0, NULL=32821, NULL=0, systemActive=1, \result=1, NULL=0, NULL=4465, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=32830, NULL=32826, tmp___0=0, \result=0, NULL=32820, NULL=0, NULL=0, NULL=0, NULL=4467, retValue_acc=1, NULL=32814, NULL=32827, tmp___2=47, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=4469, NULL=32818, retValue_acc=0, NULL=0, NULL=0, NULL=4471, NULL=0, NULL=32831, NULL=32819, NULL=32832} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L61] int pumpRunning = 0; [L62] int systemActive = 1; [L346] int cleanupTimeShifts = 4; [L616] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L849] int switchedOnBeforeTS ; [L898] int waterLevel = 1; [L899] int methaneLevelCritical = 0; [L424] int retValue_acc ; [L425] int tmp ; [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] return (retValue_acc); [L431] tmp = valid_product() [L433] COND TRUE \read(tmp) [L854] switchedOnBeforeTS = 0 [L280] int splverifierCounter ; [L281] int tmp ; [L282] int tmp___0 ; [L283] int tmp___1 ; [L284] int tmp___2 ; [L287] splverifierCounter = 0 Loop: [L289] COND TRUE 1 [L291] COND TRUE splverifierCounter < 4 [L297] tmp = __VERIFIER_nondet_int() [L299] COND FALSE !(\read(tmp)) [L307] tmp___0 = __VERIFIER_nondet_int() [L309] COND FALSE !(\read(tmp___0)) [L317] tmp___2 = __VERIFIER_nondet_int() [L319] COND TRUE \read(tmp___2) [L197] int retValue_acc ; [L200] retValue_acc = pumpRunning [L201] return (retValue_acc); [L863] switchedOnBeforeTS = isPumpRunning() [L73] COND FALSE !(\read(pumpRunning)) [L80] COND TRUE \read(systemActive) [L128] int tmp ; [L131] COND FALSE !(\read(pumpRunning)) [L102] int tmp ; [L105] COND TRUE ! pumpRunning [L242] int retValue_acc ; [L243] int tmp ; [L244] int tmp___0 ; [L978] int retValue_acc ; [L981] COND TRUE waterLevel < 2 [L982] retValue_acc = 1 [L983] return (retValue_acc); [L248] tmp = isHighWaterSensorDry() [L250] COND TRUE \read(tmp) [L251] tmp___0 = 0 [L255] retValue_acc = tmp___0 [L256] return (retValue_acc); [L107] tmp = isHighWaterLevel() [L109] COND FALSE !(\read(tmp)) [L869] int tmp ; [L870] int tmp___0 ; [L969] int retValue_acc ; [L972] retValue_acc = waterLevel [L973] return (retValue_acc); [L874] tmp = getWaterLevel() [L876] COND TRUE tmp != 2 [L197] int retValue_acc ; [L200] retValue_acc = pumpRunning [L201] return (retValue_acc); [L878] tmp___0 = isPumpRunning() [L880] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...