./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 5b9eca3afb7c823b2d668da4db479190de6a16d4 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:24:38,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:24:38,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:24:38,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:24:38,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:24:38,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:24:38,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:24:38,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:24:38,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:24:38,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:24:38,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:24:38,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:24:38,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:24:38,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:24:38,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:24:38,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:24:38,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:24:38,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:24:38,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:24:38,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:24:38,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:24:38,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:24:38,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:24:38,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:24:38,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:24:38,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:24:38,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:24:38,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:24:38,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:24:38,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:24:38,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:24:38,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:24:38,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:24:38,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:24:38,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:24:38,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:24:38,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:24:38,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:24:38,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:24:38,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:24:38,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:24:38,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:24:39,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:24:39,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:24:39,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:24:39,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:24:39,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:24:39,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:24:39,002 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:24:39,002 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:24:39,002 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:24:39,002 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:24:39,003 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:24:39,003 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:24:39,003 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:24:39,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:24:39,003 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:24:39,003 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:24:39,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:24:39,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:24:39,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:24:39,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:24:39,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:24:39,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:24:39,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:24:39,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:24:39,004 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:24:39,004 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:24:39,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:24:39,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:24:39,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:24:39,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:24:39,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:24:39,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:24:39,005 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:24:39,005 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b9eca3afb7c823b2d668da4db479190de6a16d4 [2021-08-27 16:24:39,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:24:39,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:24:39,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:24:39,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:24:39,247 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:24:39,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c [2021-08-27 16:24:39,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b537f8274/a841b879e059497b8b39dfa3784df81e/FLAG779e220bf [2021-08-27 16:24:39,707 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:24:39,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c [2021-08-27 16:24:39,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b537f8274/a841b879e059497b8b39dfa3784df81e/FLAG779e220bf [2021-08-27 16:24:39,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b537f8274/a841b879e059497b8b39dfa3784df81e [2021-08-27 16:24:39,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:24:39,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:24:39,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:24:39,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:24:39,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:24:39,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:24:39" (1/1) ... [2021-08-27 16:24:39,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4624cd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:39, skipping insertion in model container [2021-08-27 16:24:39,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:24:39" (1/1) ... [2021-08-27 16:24:39,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:24:39,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:24:39,972 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c[17910,17923] [2021-08-27 16:24:39,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:24:39,984 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:24:40,048 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c[17910,17923] [2021-08-27 16:24:40,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:24:40,059 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:24:40,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:40 WrapperNode [2021-08-27 16:24:40,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:24:40,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:24:40,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:24:40,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:24:40,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:40" (1/1) ... [2021-08-27 16:24:40,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:40" (1/1) ... [2021-08-27 16:24:40,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:24:40,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:24:40,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:24:40,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:24:40,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:40" (1/1) ... [2021-08-27 16:24:40,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:40" (1/1) ... [2021-08-27 16:24:40,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:40" (1/1) ... [2021-08-27 16:24:40,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:40" (1/1) ... [2021-08-27 16:24:40,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:40" (1/1) ... [2021-08-27 16:24:40,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:40" (1/1) ... [2021-08-27 16:24:40,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:40" (1/1) ... [2021-08-27 16:24:40,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:24:40,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:24:40,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:24:40,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:24:40,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:40" (1/1) ... [2021-08-27 16:24:40,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:24:40,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:24:40,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:24:40,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:24:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:24:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:24:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:24:40,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:24:40,771 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:24:40,772 INFO L299 CfgBuilder]: Removed 128 assume(true) statements. [2021-08-27 16:24:40,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:24:40 BoogieIcfgContainer [2021-08-27 16:24:40,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:24:40,774 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:24:40,774 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:24:40,776 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:24:40,776 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:24:40,776 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:24:39" (1/3) ... [2021-08-27 16:24:40,777 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4bcef56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:24:40, skipping insertion in model container [2021-08-27 16:24:40,777 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:24:40,777 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:40" (2/3) ... [2021-08-27 16:24:40,777 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4bcef56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:24:40, skipping insertion in model container [2021-08-27 16:24:40,777 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:24:40,777 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:24:40" (3/3) ... [2021-08-27 16:24:40,778 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product41.cil.c [2021-08-27 16:24:40,801 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:24:40,801 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:24:40,802 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:24:40,802 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:24:40,802 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:24:40,802 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:24:40,802 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:24:40,802 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:24:40,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 93 states, 92 states have (on average 1.5) internal successors, (138), 92 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:40,828 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-08-27 16:24:40,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:40,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:40,833 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:40,833 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:40,833 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:24:40,834 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 93 states, 92 states have (on average 1.5) internal successors, (138), 92 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:40,837 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-08-27 16:24:40,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:40,837 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:40,838 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:40,838 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:40,841 INFO L791 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~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(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 56#L-1true havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 25#L925true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 36#L933true main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 44#L283true assume 0 != main_~tmp~1; 31#L255true ~switchedOnBeforeTS~0 := 0; 53#L51true havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 4#L72-1true [2021-08-27 16:24:40,841 INFO L793 eck$LassoCheckResult]: Loop: 4#L72-1true assume !false; 51#L483true assume test_~splverifierCounter~0 < 4; 82#L484true test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 74#L492true assume !(0 != test_~tmp~5); 22#L492-1true test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 57#L502true assume !(0 != test_~tmp___0~2); 70#L502-1true test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 27#L512true assume 0 != test_~tmp___2~0; 68#L518-2true havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 84#L412true __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 8#L61true assume !(0 != ~pumpRunning~0); 29#L309true assume !(0 != ~systemActive~0); 69#L316true havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 9#L175true __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 91#L72true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 4#L72-1true [2021-08-27 16:24:40,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:40,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:24:40,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:40,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986618222] [2021-08-27 16:24:40,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:40,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:41,015 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:41,116 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:41,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:41,121 INFO L82 PathProgramCache]: Analyzing trace with hash 94689452, now seen corresponding path program 1 times [2021-08-27 16:24:41,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:41,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632109141] [2021-08-27 16:24:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:41,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:41,125 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:41,130 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:41,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:41,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2028714662, now seen corresponding path program 1 times [2021-08-27 16:24:41,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:41,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565527326] [2021-08-27 16:24:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:41,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:24:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:24:41,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:24:41,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565527326] [2021-08-27 16:24:41,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565527326] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:24:41,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:24:41,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:24:41,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277444915] [2021-08-27 16:24:41,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:24:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:24:41,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:24:41,373 INFO L87 Difference]: Start difference. First operand has 93 states, 92 states have (on average 1.5) internal successors, (138), 92 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:24:41,513 INFO L93 Difference]: Finished difference Result 93 states and 127 transitions. [2021-08-27 16:24:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:24:41,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 93 states and 127 transitions. [2021-08-27 16:24:41,516 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-08-27 16:24:41,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 93 states to 86 states and 120 transitions. [2021-08-27 16:24:41,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 86 [2021-08-27 16:24:41,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 86 [2021-08-27 16:24:41,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 120 transitions. [2021-08-27 16:24:41,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:24:41,521 INFO L681 BuchiCegarLoop]: Abstraction has 86 states and 120 transitions. [2021-08-27 16:24:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states and 120 transitions. [2021-08-27 16:24:41,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-08-27 16:24:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 85 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2021-08-27 16:24:41,551 INFO L704 BuchiCegarLoop]: Abstraction has 86 states and 120 transitions. [2021-08-27 16:24:41,551 INFO L587 BuchiCegarLoop]: Abstraction has 86 states and 120 transitions. [2021-08-27 16:24:41,552 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:24:41,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 120 transitions. [2021-08-27 16:24:41,555 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-08-27 16:24:41,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:41,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:41,557 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:41,557 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:41,558 INFO L791 eck$LassoCheckResult]: Stem: 287#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~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(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 274#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 242#L925 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 243#L933 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 255#L283 assume 0 != main_~tmp~1; 250#L255 ~switchedOnBeforeTS~0 := 0; 251#L51 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 206#L72-1 [2021-08-27 16:24:41,558 INFO L793 eck$LassoCheckResult]: Loop: 206#L72-1 assume !false; 207#L483 assume test_~splverifierCounter~0 < 4; 269#L484 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 286#L492 assume !(0 != test_~tmp~5); 235#L492-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 236#L502 assume !(0 != test_~tmp___0~2); 276#L502-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 245#L512 assume 0 != test_~tmp___2~0; 227#L518-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 283#L412 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 213#L61 assume !(0 != ~pumpRunning~0); 214#L309 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret21, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 247#L341 assume !(0 == ~pumpRunning~0); 241#L316 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 216#L175 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 217#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 206#L72-1 [2021-08-27 16:24:41,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:41,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:24:41,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:41,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348461406] [2021-08-27 16:24:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:41,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:41,614 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:41,674 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:41,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:41,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1401363709, now seen corresponding path program 1 times [2021-08-27 16:24:41,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:41,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542683066] [2021-08-27 16:24:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:41,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:24:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:24:41,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:24:41,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542683066] [2021-08-27 16:24:41,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542683066] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:24:41,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:24:41,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:24:41,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426591719] [2021-08-27 16:24:41,699 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:24:41,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:24:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:24:41,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:24:41,700 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:41,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:24:41,759 INFO L93 Difference]: Finished difference Result 135 states and 182 transitions. [2021-08-27 16:24:41,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:24:41,760 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 182 transitions. [2021-08-27 16:24:41,763 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 94 [2021-08-27 16:24:41,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 135 states and 182 transitions. [2021-08-27 16:24:41,766 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 135 [2021-08-27 16:24:41,766 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 135 [2021-08-27 16:24:41,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 182 transitions. [2021-08-27 16:24:41,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:24:41,768 INFO L681 BuchiCegarLoop]: Abstraction has 135 states and 182 transitions. [2021-08-27 16:24:41,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states and 182 transitions. [2021-08-27 16:24:41,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-08-27 16:24:41,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 135 states have (on average 1.348148148148148) internal successors, (182), 134 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 182 transitions. [2021-08-27 16:24:41,781 INFO L704 BuchiCegarLoop]: Abstraction has 135 states and 182 transitions. [2021-08-27 16:24:41,781 INFO L587 BuchiCegarLoop]: Abstraction has 135 states and 182 transitions. [2021-08-27 16:24:41,781 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:24:41,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 135 states and 182 transitions. [2021-08-27 16:24:41,783 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 94 [2021-08-27 16:24:41,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:41,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:41,784 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:41,784 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:41,784 INFO L791 eck$LassoCheckResult]: Stem: 521#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~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(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 505#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 470#L925 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 471#L933 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 486#L283 assume 0 != main_~tmp~1; 478#L255 ~switchedOnBeforeTS~0 := 0; 479#L51 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 431#L72-1 [2021-08-27 16:24:41,784 INFO L793 eck$LassoCheckResult]: Loop: 431#L72-1 assume !false; 432#L483 assume test_~splverifierCounter~0 < 4; 500#L484 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 518#L492 assume !(0 != test_~tmp~5); 462#L492-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 463#L502 assume !(0 != test_~tmp___0~2); 507#L502-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 473#L512 assume 0 != test_~tmp___2~0; 453#L518-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 514#L412 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 440#L61 assume !(0 != ~pumpRunning~0); 441#L309 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret21, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 476#L341 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 490#L183 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 477#L188 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 435#L461 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 436#L461-2 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 494#L467 processEnvironment_#t~ret21 := isHighWaterLevel_#res;processEnvironment_~tmp~2 := processEnvironment_#t~ret21;havoc processEnvironment_#t~ret21; 523#L345 assume !(0 != processEnvironment_~tmp~2); 468#L316 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 442#L175 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 443#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 431#L72-1 [2021-08-27 16:24:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:41,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:24:41,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:41,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057987272] [2021-08-27 16:24:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:41,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:41,822 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:41,868 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:41,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:41,869 INFO L82 PathProgramCache]: Analyzing trace with hash 394057807, now seen corresponding path program 1 times [2021-08-27 16:24:41,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:41,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871722192] [2021-08-27 16:24:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:41,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:24:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:24:41,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:24:41,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871722192] [2021-08-27 16:24:41,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871722192] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:24:41,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:24:41,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:24:41,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413256756] [2021-08-27 16:24:41,903 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:24:41,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:24:41,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:24:41,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:24:41,903 INFO L87 Difference]: Start difference. First operand 135 states and 182 transitions. cyclomatic complexity: 49 Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:42,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:24:42,008 INFO L93 Difference]: Finished difference Result 357 states and 473 transitions. [2021-08-27 16:24:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:24:42,008 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 357 states and 473 transitions. [2021-08-27 16:24:42,011 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 235 [2021-08-27 16:24:42,012 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 357 states to 357 states and 473 transitions. [2021-08-27 16:24:42,012 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 357 [2021-08-27 16:24:42,013 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 357 [2021-08-27 16:24:42,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 357 states and 473 transitions. [2021-08-27 16:24:42,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:24:42,014 INFO L681 BuchiCegarLoop]: Abstraction has 357 states and 473 transitions. [2021-08-27 16:24:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states and 473 transitions. [2021-08-27 16:24:42,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 263. [2021-08-27 16:24:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 263 states have (on average 1.3155893536121672) internal successors, (346), 262 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 346 transitions. [2021-08-27 16:24:42,020 INFO L704 BuchiCegarLoop]: Abstraction has 263 states and 346 transitions. [2021-08-27 16:24:42,020 INFO L587 BuchiCegarLoop]: Abstraction has 263 states and 346 transitions. [2021-08-27 16:24:42,020 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:24:42,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 263 states and 346 transitions. [2021-08-27 16:24:42,021 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 188 [2021-08-27 16:24:42,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:42,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:42,022 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:42,022 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:42,022 INFO L791 eck$LassoCheckResult]: Stem: 1036#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~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(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1015#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 978#L925 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 979#L933 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 995#L283 assume 0 != main_~tmp~1; 987#L255 ~switchedOnBeforeTS~0 := 0; 988#L51 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 939#L72-1 [2021-08-27 16:24:42,023 INFO L793 eck$LassoCheckResult]: Loop: 939#L72-1 assume !false; 940#L483 assume test_~splverifierCounter~0 < 4; 1010#L484 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 1195#L492 assume !(0 != test_~tmp~5); 1196#L492-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 1201#L502 assume !(0 != test_~tmp___0~2); 1199#L502-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 1198#L512 assume 0 != test_~tmp___2~0; 1026#L518-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 1027#L412 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 948#L61 assume !(0 != ~pumpRunning~0); 949#L309 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret21, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 985#L341 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 999#L183 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 986#L188 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 943#L461 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 944#L461-2 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1003#L467 processEnvironment_#t~ret21 := isHighWaterLevel_#res;processEnvironment_~tmp~2 := processEnvironment_#t~ret21;havoc processEnvironment_#t~ret21; 1038#L345 assume !(0 != processEnvironment_~tmp~2); 976#L316 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 950#L175 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 951#L72 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 1044#L412-1 __utac_acc__Specification5_spec__3_#t~ret9 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 1046#L76 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 939#L72-1 [2021-08-27 16:24:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:42,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:24:42,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:42,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918011298] [2021-08-27 16:24:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:42,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:42,054 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:42,071 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:42,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:42,072 INFO L82 PathProgramCache]: Analyzing trace with hash 732416842, now seen corresponding path program 1 times [2021-08-27 16:24:42,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:42,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47572072] [2021-08-27 16:24:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:42,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:42,076 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:42,079 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:42,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:42,079 INFO L82 PathProgramCache]: Analyzing trace with hash 591823504, now seen corresponding path program 1 times [2021-08-27 16:24:42,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:42,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258080781] [2021-08-27 16:24:42,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:42,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:42,094 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:42,115 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:23,301 WARN L207 SmtUtils]: Spent 40.92 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:26:05,286 WARN L207 SmtUtils]: Spent 20.88 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:26:05,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:26:05 BoogieIcfgContainer [2021-08-27 16:26:05,401 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:26:05,401 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:26:05,401 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:26:05,402 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:26:05,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:24:40" (3/4) ... [2021-08-27 16:26:05,404 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:26:05,437 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:26:05,437 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:26:05,438 INFO L168 Benchmark]: Toolchain (without parser) took 85713.67 ms. Allocated memory was 65.0 MB in the beginning and 130.0 MB in the end (delta: 65.0 MB). Free memory was 44.5 MB in the beginning and 90.8 MB in the end (delta: -46.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:05,438 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 65.0 MB. Free memory is still 46.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:26:05,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.40 ms. Allocated memory is still 65.0 MB. Free memory was 44.4 MB in the beginning and 41.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:05,439 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.58 ms. Allocated memory is still 65.0 MB. Free memory was 41.6 MB in the beginning and 38.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:05,439 INFO L168 Benchmark]: Boogie Preprocessor took 19.20 ms. Allocated memory is still 65.0 MB. Free memory was 38.2 MB in the beginning and 36.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:05,440 INFO L168 Benchmark]: RCFGBuilder took 656.69 ms. Allocated memory was 65.0 MB in the beginning and 86.0 MB in the end (delta: 21.0 MB). Free memory was 36.0 MB in the beginning and 49.1 MB in the end (delta: -13.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:05,440 INFO L168 Benchmark]: BuchiAutomizer took 84627.27 ms. Allocated memory was 86.0 MB in the beginning and 130.0 MB in the end (delta: 44.0 MB). Free memory was 49.1 MB in the beginning and 94.0 MB in the end (delta: -44.8 MB). Peak memory consumption was 69.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:05,441 INFO L168 Benchmark]: Witness Printer took 36.00 ms. Allocated memory is still 130.0 MB. Free memory was 92.9 MB in the beginning and 90.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:05,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 65.0 MB. Free memory is still 46.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.40 ms. Allocated memory is still 65.0 MB. Free memory was 44.4 MB in the beginning and 41.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.58 ms. Allocated memory is still 65.0 MB. Free memory was 41.6 MB in the beginning and 38.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.20 ms. Allocated memory is still 65.0 MB. Free memory was 38.2 MB in the beginning and 36.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 656.69 ms. Allocated memory was 65.0 MB in the beginning and 86.0 MB in the end (delta: 21.0 MB). Free memory was 36.0 MB in the beginning and 49.1 MB in the end (delta: -13.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 84627.27 ms. Allocated memory was 86.0 MB in the beginning and 130.0 MB in the end (delta: 44.0 MB). Free memory was 49.1 MB in the beginning and 94.0 MB in the end (delta: -44.8 MB). Peak memory consumption was 69.6 MB. Max. memory is 16.1 GB. * Witness Printer took 36.00 ms. Allocated memory is still 130.0 MB. Free memory was 92.9 MB in the beginning and 90.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 263 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 84.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 84.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 32.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 94 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 263 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 399 SDtfs, 959 SDslu, 408 SDs, 0 SdLazy, 103 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 190.9ms 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: 482]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=9830} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=9830, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49f0c756=0, NULL=9848, NULL=9838, NULL=9857, methaneLevelCritical=0, retValue_acc=1, tmp=0, NULL=0, NULL=9850, NULL=9851, NULL=0, tmp___1=0, NULL=9836, retValue_acc=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53627cfb=0, NULL=9856, cleanupTimeShifts=4, NULL=9844, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44040236=56, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ae60303=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@305c6419=0, waterLevel=1, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=9837, tmp=1, retValue_acc=1, NULL=0, NULL=0, \result=1, NULL=0, tmp=1, NULL=0, NULL=9849, NULL=0, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=9847, NULL=9852, tmp=0, head=0, NULL=9833, NULL=0, NULL=0, NULL=0, NULL=9832, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27f5cab9=0, NULL=9840, retValue_acc=0, NULL=9841, NULL=9839, NULL=9853, tmp___0=0, NULL=0, NULL=0, tmp=1, NULL=0, switchedOnBeforeTS=0, NULL=9834, NULL=9835, \result=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=9831, tmp___0=0, \result=0, NULL=0, NULL=9855, NULL=0, NULL=9854, NULL=0, NULL=9858, NULL=9846, tmp___2=56, splverifierCounter=0, NULL=0, NULL=9845, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@665c12fa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28acf561=0, NULL=9843, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8c2f7ce=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@392d9048=0, NULL=0, NULL=0, NULL=9842, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L45] int switchedOnBeforeTS ; [L100] int waterLevel = 1; [L101] int methaneLevelCritical = 0; [L194] int cleanupTimeShifts = 4; [L299] int pumpRunning = 0; [L300] int systemActive = 1; [L706] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L274] int retValue_acc ; [L275] int tmp ; [L929] int retValue_acc ; [L932] retValue_acc = 1 [L933] return (retValue_acc); [L281] tmp = valid_product() [L283] COND TRUE \read(tmp) [L50] switchedOnBeforeTS = 0 [L473] int splverifierCounter ; [L474] int tmp ; [L475] int tmp___0 ; [L476] int tmp___1 ; [L477] int tmp___2 ; [L480] splverifierCounter = 0 Loop: [L482] COND TRUE 1 [L484] COND TRUE splverifierCounter < 4 [L490] tmp = __VERIFIER_nondet_int() [L492] COND FALSE !(\read(tmp)) [L500] tmp___0 = __VERIFIER_nondet_int() [L502] COND FALSE !(\read(tmp___0)) [L510] tmp___2 = __VERIFIER_nondet_int() [L512] COND TRUE \read(tmp___2) [L408] int retValue_acc ; [L411] retValue_acc = pumpRunning [L412] return (retValue_acc); [L59] switchedOnBeforeTS = isPumpRunning() [L309] COND FALSE !(\read(pumpRunning)) [L316] COND TRUE \read(systemActive) [L338] int tmp ; [L341] COND TRUE ! pumpRunning [L453] int retValue_acc ; [L454] int tmp ; [L455] int tmp___0 ; [L180] int retValue_acc ; [L183] COND TRUE waterLevel < 2 [L184] retValue_acc = 1 [L185] return (retValue_acc); [L459] tmp = isHighWaterSensorDry() [L461] COND TRUE \read(tmp) [L462] tmp___0 = 0 [L466] retValue_acc = tmp___0 [L467] return (retValue_acc); [L343] tmp = isHighWaterLevel() [L345] COND FALSE !(\read(tmp)) [L65] int tmp ; [L66] int tmp___0 ; [L171] int retValue_acc ; [L174] retValue_acc = waterLevel [L175] return (retValue_acc); [L70] tmp = getWaterLevel() [L72] COND TRUE tmp != 2 [L408] int retValue_acc ; [L411] retValue_acc = pumpRunning [L412] return (retValue_acc); [L74] tmp___0 = isPumpRunning() [L76] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:26:05,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...