./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product58.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_spec3_product58.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 b8451c8f3d8ff26b053ea0918ef208b2c50fd9de .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:13:02,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:13:02,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:13:02,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:13:02,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:13:02,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:13:02,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:13:02,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:13:02,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:13:02,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:13:02,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:13:02,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:13:02,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:13:02,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:13:02,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:13:02,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:13:02,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:13:02,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:13:02,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:13:02,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:13:02,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:13:02,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:13:02,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:13:02,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:13:02,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:13:02,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:13:02,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:13:02,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:13:02,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:13:02,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:13:02,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:13:02,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:13:02,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:13:02,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:13:02,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:13:02,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:13:02,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:13:02,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:13:02,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:13:02,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:13:02,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:13:02,058 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:13:02,088 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:13:02,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:13:02,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:13:02,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:13:02,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:13:02,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:13:02,090 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:13:02,090 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:13:02,090 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:13:02,090 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:13:02,090 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:13:02,090 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:13:02,090 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:13:02,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:13:02,091 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:13:02,091 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:13:02,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:13:02,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:13:02,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:13:02,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:13:02,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:13:02,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:13:02,092 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:13:02,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:13:02,092 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:13:02,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:13:02,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:13:02,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:13:02,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:13:02,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:13:02,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:13:02,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:13:02,093 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:13:02,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8451c8f3d8ff26b053ea0918ef208b2c50fd9de [2021-08-27 16:13:02,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:13:02,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:13:02,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:13:02,374 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:13:02,375 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:13:02,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c [2021-08-27 16:13:02,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5efde9418/11543b549bff4543bb04ffd50c0b17e6/FLAG2db1cd8d0 [2021-08-27 16:13:02,824 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:13:02,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c [2021-08-27 16:13:02,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5efde9418/11543b549bff4543bb04ffd50c0b17e6/FLAG2db1cd8d0 [2021-08-27 16:13:03,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5efde9418/11543b549bff4543bb04ffd50c0b17e6 [2021-08-27 16:13:03,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:13:03,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:13:03,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:13:03,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:13:03,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:13:03,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:13:03" (1/1) ... [2021-08-27 16:13:03,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21848039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03, skipping insertion in model container [2021-08-27 16:13:03,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:13:03" (1/1) ... [2021-08-27 16:13:03,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:13:03,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:13:03,582 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_spec3_product58.cil.c[12713,12726] [2021-08-27 16:13:03,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:13:03,674 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:13:03,772 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_spec3_product58.cil.c[12713,12726] [2021-08-27 16:13:03,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:13:03,824 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:13:03,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03 WrapperNode [2021-08-27 16:13:03,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:13:03,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:13:03,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:13:03,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:13:03,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03" (1/1) ... [2021-08-27 16:13:03,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03" (1/1) ... [2021-08-27 16:13:03,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:13:03,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:13:03,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:13:03,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:13:03,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03" (1/1) ... [2021-08-27 16:13:03,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03" (1/1) ... [2021-08-27 16:13:03,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03" (1/1) ... [2021-08-27 16:13:03,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03" (1/1) ... [2021-08-27 16:13:03,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03" (1/1) ... [2021-08-27 16:13:03,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03" (1/1) ... [2021-08-27 16:13:03,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03" (1/1) ... [2021-08-27 16:13:04,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:13:04,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:13:04,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:13:04,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:13:04,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03" (1/1) ... [2021-08-27 16:13:04,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:13:04,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:13:04,034 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 16:13:04,051 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 16:13:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:13:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:13:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:13:04,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:13:04,668 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:13:04,668 INFO L299 CfgBuilder]: Removed 200 assume(true) statements. [2021-08-27 16:13:04,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:13:04 BoogieIcfgContainer [2021-08-27 16:13:04,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:13:04,671 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:13:04,671 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:13:04,673 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:13:04,673 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:13:04,673 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:13:03" (1/3) ... [2021-08-27 16:13:04,674 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55dd960b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:13:04, skipping insertion in model container [2021-08-27 16:13:04,674 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:13:04,674 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:03" (2/3) ... [2021-08-27 16:13:04,674 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55dd960b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:13:04, skipping insertion in model container [2021-08-27 16:13:04,674 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:13:04,674 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:13:04" (3/3) ... [2021-08-27 16:13:04,675 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product58.cil.c [2021-08-27 16:13:04,698 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:13:04,698 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:13:04,698 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:13:04,698 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:13:04,698 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:13:04,699 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:13:04,699 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:13:04,699 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:13:04,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.510948905109489) internal successors, (207), 137 states have internal predecessors, (207), 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 16:13:04,722 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-08-27 16:13:04,722 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:13:04,722 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:13:04,726 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:13:04,727 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:13:04,727 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:13:04,727 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.510948905109489) internal successors, (207), 137 states have internal predecessors, (207), 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 16:13:04,731 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-08-27 16:13:04,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:13:04,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:13:04,732 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:13:04,732 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:13:04,734 INFO L791 eck$LassoCheckResult]: Stem: 122#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string47.base, #t~string47.offset, 1);call write~init~int(77, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(101, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(116, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(104, #t~string47.base, 4 + #t~string47.offset, 1);call write~init~int(58, #t~string47.base, 5 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 6 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string49.base, #t~string49.offset, 1);call write~init~int(82, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(73, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(84, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 4 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(75, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string53.base, #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 1 + #t~string53.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 48#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 8#L168true havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 52#L176true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 132#L132true assume 0 != main_~tmp~0; 22#L105true havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 119#L681-1true [2021-08-27 16:13:04,735 INFO L793 eck$LassoCheckResult]: Loop: 119#L681-1true assume !false; 71#L712true assume test_~splverifierCounter~0 < 4; 108#L713true test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 90#L721true assume !(0 != test_~tmp~5); 59#L721-1true test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 104#L731true assume !(0 != test_~tmp___0~1); 106#L731-1true test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 126#L741true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 129#L749-2true assume !(0 != ~pumpRunning~0); 29#L777true assume !(0 != ~systemActive~0); 121#L784true havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 86#L605-2true __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 73#L675true assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 119#L681-1true [2021-08-27 16:13:04,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:04,738 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:13:04,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:04,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781028615] [2021-08-27 16:13:04,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:04,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:04,861 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:04,926 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:04,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1678143626, now seen corresponding path program 1 times [2021-08-27 16:13:04,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:04,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235611946] [2021-08-27 16:13:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:04,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:13:04,963 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 16:13:04,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:13:04,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235611946] [2021-08-27 16:13:04,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235611946] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:13:04,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:13:04,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:13:04,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198163325] [2021-08-27 16:13:04,967 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:13:04,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:13:04,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:13:04,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:13:04,977 INFO L87 Difference]: Start difference. First operand has 138 states, 137 states have (on average 1.510948905109489) internal successors, (207), 137 states have internal predecessors, (207), 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 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16:13:05,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:13:05,000 INFO L93 Difference]: Finished difference Result 138 states and 197 transitions. [2021-08-27 16:13:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:13:05,002 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 197 transitions. [2021-08-27 16:13:05,004 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:13:05,007 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 131 states and 189 transitions. [2021-08-27 16:13:05,007 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 131 [2021-08-27 16:13:05,008 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 131 [2021-08-27 16:13:05,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 189 transitions. [2021-08-27 16:13:05,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:13:05,009 INFO L681 BuchiCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-08-27 16:13:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states and 189 transitions. [2021-08-27 16:13:05,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-08-27 16:13:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 131 states have (on average 1.4427480916030535) internal successors, (189), 130 states have internal predecessors, (189), 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 16:13:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 189 transitions. [2021-08-27 16:13:05,030 INFO L704 BuchiCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-08-27 16:13:05,030 INFO L587 BuchiCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-08-27 16:13:05,030 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:13:05,030 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 131 states and 189 transitions. [2021-08-27 16:13:05,034 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:13:05,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:13:05,035 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:13:05,036 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:13:05,036 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:13:05,036 INFO L791 eck$LassoCheckResult]: Stem: 412#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string47.base, #t~string47.offset, 1);call write~init~int(77, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(101, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(116, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(104, #t~string47.base, 4 + #t~string47.offset, 1);call write~init~int(58, #t~string47.base, 5 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 6 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string49.base, #t~string49.offset, 1);call write~init~int(82, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(73, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(84, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 4 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(75, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string53.base, #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 1 + #t~string53.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 359#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 294#L168 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 295#L176 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 363#L132 assume 0 != main_~tmp~0; 320#L105 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 321#L681-1 [2021-08-27 16:13:05,037 INFO L793 eck$LassoCheckResult]: Loop: 321#L681-1 assume !false; 382#L712 assume test_~splverifierCounter~0 < 4; 383#L713 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 397#L721 assume !(0 != test_~tmp~5); 286#L721-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 371#L731 assume !(0 != test_~tmp___0~1); 319#L731-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 405#L741 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 291#L749-2 assume !(0 != ~pumpRunning~0); 333#L777 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 334#L835 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 407#L809-1 assume !(0 == ~pumpRunning~0); 340#L784 havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 393#L605-2 __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 384#L675 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 321#L681-1 [2021-08-27 16:13:05,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:05,041 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:13:05,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:05,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339978894] [2021-08-27 16:13:05,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:05,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:05,117 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:05,219 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:05,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:05,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1068993921, now seen corresponding path program 1 times [2021-08-27 16:13:05,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:05,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400565138] [2021-08-27 16:13:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:05,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:13:05,263 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 16:13:05,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:13:05,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400565138] [2021-08-27 16:13:05,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400565138] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:13:05,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:13:05,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:13:05,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32838714] [2021-08-27 16:13:05,264 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:13:05,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:13:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:13:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:13:05,265 INFO L87 Difference]: Start difference. First operand 131 states and 189 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 16:13:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:13:05,370 INFO L93 Difference]: Finished difference Result 178 states and 246 transitions. [2021-08-27 16:13:05,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:13:05,370 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 246 transitions. [2021-08-27 16:13:05,373 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-08-27 16:13:05,376 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 178 states and 246 transitions. [2021-08-27 16:13:05,377 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-08-27 16:13:05,378 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 178 [2021-08-27 16:13:05,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 178 states and 246 transitions. [2021-08-27 16:13:05,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:13:05,382 INFO L681 BuchiCegarLoop]: Abstraction has 178 states and 246 transitions. [2021-08-27 16:13:05,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states and 246 transitions. [2021-08-27 16:13:05,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-08-27 16:13:05,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 178 states have (on average 1.3820224719101124) internal successors, (246), 177 states have internal predecessors, (246), 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 16:13:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 246 transitions. [2021-08-27 16:13:05,394 INFO L704 BuchiCegarLoop]: Abstraction has 178 states and 246 transitions. [2021-08-27 16:13:05,394 INFO L587 BuchiCegarLoop]: Abstraction has 178 states and 246 transitions. [2021-08-27 16:13:05,394 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:13:05,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 178 states and 246 transitions. [2021-08-27 16:13:05,395 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-08-27 16:13:05,395 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:13:05,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:13:05,396 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:13:05,396 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] [2021-08-27 16:13:05,396 INFO L791 eck$LassoCheckResult]: Stem: 732#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string47.base, #t~string47.offset, 1);call write~init~int(77, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(101, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(116, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(104, #t~string47.base, 4 + #t~string47.offset, 1);call write~init~int(58, #t~string47.base, 5 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 6 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string49.base, #t~string49.offset, 1);call write~init~int(82, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(73, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(84, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 4 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(75, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string53.base, #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 1 + #t~string53.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 674#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 609#L168 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 610#L176 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 681#L132 assume 0 != main_~tmp~0; 635#L105 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 636#L681-1 [2021-08-27 16:13:05,396 INFO L793 eck$LassoCheckResult]: Loop: 636#L681-1 assume !false; 699#L712 assume test_~splverifierCounter~0 < 4; 700#L713 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 717#L721 assume !(0 != test_~tmp~5); 601#L721-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 687#L731 assume !(0 != test_~tmp___0~1); 632#L731-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 725#L741 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 606#L749-2 assume !(0 != ~pumpRunning~0); 646#L777 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 647#L835 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 727#L809-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 728#L645-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 622#L650-1 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 623#L955-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 629#L955-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 630#L961-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 652#L813-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 653#L784 havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 712#L605-2 __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 701#L675 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 636#L681-1 [2021-08-27 16:13:05,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:05,397 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:13:05,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:05,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060842224] [2021-08-27 16:13:05,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:05,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:05,453 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:05,504 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:05,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:05,505 INFO L82 PathProgramCache]: Analyzing trace with hash 87587051, now seen corresponding path program 1 times [2021-08-27 16:13:05,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:05,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305625817] [2021-08-27 16:13:05,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:05,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:05,509 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:05,513 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:05,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:05,513 INFO L82 PathProgramCache]: Analyzing trace with hash 543658245, now seen corresponding path program 1 times [2021-08-27 16:13:05,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:05,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396226671] [2021-08-27 16:13:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:05,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:13:05,553 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 16:13:05,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:13:05,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396226671] [2021-08-27 16:13:05,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396226671] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:13:05,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:13:05,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:13:05,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837724003] [2021-08-27 16:13:05,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:13:05,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:13:05,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:13:05,744 INFO L87 Difference]: Start difference. First operand 178 states and 246 transitions. cyclomatic complexity: 70 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 16:13:05,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:13:05,904 INFO L93 Difference]: Finished difference Result 621 states and 863 transitions. [2021-08-27 16:13:05,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:13:05,905 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 621 states and 863 transitions. [2021-08-27 16:13:05,908 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 452 [2021-08-27 16:13:05,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 621 states to 621 states and 863 transitions. [2021-08-27 16:13:05,911 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 621 [2021-08-27 16:13:05,911 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 621 [2021-08-27 16:13:05,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 621 states and 863 transitions. [2021-08-27 16:13:05,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:13:05,912 INFO L681 BuchiCegarLoop]: Abstraction has 621 states and 863 transitions. [2021-08-27 16:13:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states and 863 transitions. [2021-08-27 16:13:05,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 350. [2021-08-27 16:13:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 350 states have (on average 1.3657142857142857) internal successors, (478), 349 states have internal predecessors, (478), 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 16:13:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 478 transitions. [2021-08-27 16:13:05,920 INFO L704 BuchiCegarLoop]: Abstraction has 350 states and 478 transitions. [2021-08-27 16:13:05,920 INFO L587 BuchiCegarLoop]: Abstraction has 350 states and 478 transitions. [2021-08-27 16:13:05,920 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:13:05,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 350 states and 478 transitions. [2021-08-27 16:13:05,922 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 244 [2021-08-27 16:13:05,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:13:05,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:13:05,922 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:13:05,923 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] [2021-08-27 16:13:05,923 INFO L791 eck$LassoCheckResult]: Stem: 1566#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string47.base, #t~string47.offset, 1);call write~init~int(77, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(101, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(116, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(104, #t~string47.base, 4 + #t~string47.offset, 1);call write~init~int(58, #t~string47.base, 5 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 6 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string49.base, #t~string49.offset, 1);call write~init~int(82, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(73, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(84, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 4 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(75, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string53.base, #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 1 + #t~string53.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1494#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1426#L168 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 1427#L176 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1501#L132 assume 0 != main_~tmp~0; 1452#L105 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1453#L681-1 [2021-08-27 16:13:05,923 INFO L793 eck$LassoCheckResult]: Loop: 1453#L681-1 assume !false; 1691#L712 assume test_~splverifierCounter~0 < 4; 1556#L713 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 1540#L721 assume !(0 != test_~tmp~5); 1418#L721-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 1507#L731 assume !(0 != test_~tmp___0~1); 1551#L731-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 1554#L741 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1423#L749-2 assume !(0 != ~pumpRunning~0); 1461#L777 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 1462#L835 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1734#L809-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1732#L645-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1730#L650-1 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 1728#L955-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 1726#L955-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1723#L961-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 1719#L813-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1480#L784 havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1700#L605-2 __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 1699#L675 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~4);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 1698#L637 __utac_acc__Specification3_spec__1_#t~ret55 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret55;havoc __utac_acc__Specification3_spec__1_#t~ret55; 1692#L681 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1453#L681-1 [2021-08-27 16:13:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:05,924 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-08-27 16:13:05,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:05,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487823425] [2021-08-27 16:13:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:05,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:05,942 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:05,962 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:05,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:05,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1728181283, now seen corresponding path program 1 times [2021-08-27 16:13:05,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:05,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901667672] [2021-08-27 16:13:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:05,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:05,967 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:05,971 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:05,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:05,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1530428041, now seen corresponding path program 1 times [2021-08-27 16:13:05,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:05,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093520352] [2021-08-27 16:13:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:05,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:06,008 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:06,029 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:45,812 WARN L207 SmtUtils]: Spent 39.55 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:14:25,103 WARN L207 SmtUtils]: Spent 19.67 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:14:25,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:14:25 BoogieIcfgContainer [2021-08-27 16:14:25,240 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:14:25,240 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:14:25,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:14:25,241 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:14:25,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:13:04" (3/4) ... [2021-08-27 16:14:25,246 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:14:25,287 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:14:25,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:14:25,291 INFO L168 Benchmark]: Toolchain (without parser) took 82069.19 ms. Allocated memory was 54.5 MB in the beginning and 184.5 MB in the end (delta: 130.0 MB). Free memory was 32.9 MB in the beginning and 123.3 MB in the end (delta: -90.4 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:25,291 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:14:25,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 603.49 ms. Allocated memory was 54.5 MB in the beginning and 79.7 MB in the end (delta: 25.2 MB). Free memory was 32.6 MB in the beginning and 55.5 MB in the end (delta: -22.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:25,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.37 ms. Allocated memory is still 79.7 MB. Free memory was 55.5 MB in the beginning and 51.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:25,292 INFO L168 Benchmark]: Boogie Preprocessor took 62.48 ms. Allocated memory is still 79.7 MB. Free memory was 51.6 MB in the beginning and 48.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:25,292 INFO L168 Benchmark]: RCFGBuilder took 670.07 ms. Allocated memory is still 79.7 MB. Free memory was 48.5 MB in the beginning and 45.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:25,295 INFO L168 Benchmark]: BuchiAutomizer took 80569.08 ms. Allocated memory was 79.7 MB in the beginning and 184.5 MB in the end (delta: 104.9 MB). Free memory was 45.1 MB in the beginning and 125.4 MB in the end (delta: -80.3 MB). Peak memory consumption was 104.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:25,295 INFO L168 Benchmark]: Witness Printer took 49.51 ms. Allocated memory is still 184.5 MB. Free memory was 125.4 MB in the beginning and 123.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:25,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 603.49 ms. Allocated memory was 54.5 MB in the beginning and 79.7 MB in the end (delta: 25.2 MB). Free memory was 32.6 MB in the beginning and 55.5 MB in the end (delta: -22.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.37 ms. Allocated memory is still 79.7 MB. Free memory was 55.5 MB in the beginning and 51.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.48 ms. Allocated memory is still 79.7 MB. Free memory was 51.6 MB in the beginning and 48.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 670.07 ms. Allocated memory is still 79.7 MB. Free memory was 48.5 MB in the beginning and 45.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 80569.08 ms. Allocated memory was 79.7 MB in the beginning and 184.5 MB in the end (delta: 104.9 MB). Free memory was 45.1 MB in the beginning and 125.4 MB in the end (delta: -80.3 MB). Peak memory consumption was 104.8 MB. Max. memory is 16.1 GB. * Witness Printer took 49.51 ms. Allocated memory is still 184.5 MB. Free memory was 125.4 MB in the beginning and 123.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 350 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 80.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 80.1s. 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 30.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 271 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 350 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 632 SDtfs, 1088 SDslu, 934 SDs, 0 SdLazy, 138 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 159.7ms 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: 711]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=3275} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f58b1bb=0, NULL=3275, NULL=0, NULL=0, methaneLevelCritical=0, NULL=3276, tmp=0, NULL=0, NULL=3289, tmp___1=0, NULL=3284, NULL=0, NULL=3288, NULL=3281, cleanupTimeShifts=4, tmp=0, NULL=3291, NULL=0, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3071e686=0, NULL=3277, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d900395=0, \result=1, NULL=0, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f3434c9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38439f47=0, NULL=0, NULL=0, retValue_acc=1, NULL=3286, tmp___0=0, tmp=1, NULL=3300, head=0, NULL=0, NULL=3285, NULL=3296, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39f62ff8=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67336865=0, NULL=0, retValue_acc=0, NULL=0, NULL=3282, NULL=3278, NULL=3287, tmp___0=0, NULL=0, NULL=3290, NULL=3283, NULL=0, NULL=0, tmp___0=1, NULL=3293, NULL=3298, tmp=0, NULL=3299, NULL=0, NULL=0, systemActive=1, \result=1, NULL=0, retValue_acc=0, \result=0, NULL=3292, NULL=0, NULL=3302, NULL=3280, \result=0, NULL=3303, NULL=0, NULL=3297, retValue_acc=1, tmp___2=66, splverifierCounter=0, NULL=0, \result=0, NULL=3295, NULL=3279, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@52bfdb89=66, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a646764=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74c394de=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54771126=0, NULL=3294, NULL=3301} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L350] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L562] int waterLevel = 1; [L563] int methaneLevelCritical = 0; [L770] int pumpRunning = 0; [L771] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L702] int splverifierCounter ; [L703] int tmp ; [L704] int tmp___0 ; [L705] int tmp___1 ; [L706] int tmp___2 ; [L709] splverifierCounter = 0 Loop: [L711] COND TRUE 1 [L713] COND TRUE splverifierCounter < 4 [L719] tmp = __VERIFIER_nondet_int() [L721] COND FALSE !(\read(tmp)) [L729] tmp___0 = __VERIFIER_nondet_int() [L731] COND FALSE !(\read(tmp___0)) [L739] tmp___2 = __VERIFIER_nondet_int() [L741] COND TRUE \read(tmp___2) [L988] systemActive = 1 [L777] COND FALSE !(\read(pumpRunning)) [L784] COND TRUE \read(systemActive) [L832] int tmp ; [L835] COND FALSE !(\read(pumpRunning)) [L806] int tmp ; [L809] COND TRUE ! pumpRunning [L947] int retValue_acc ; [L948] int tmp ; [L949] int tmp___0 ; [L642] int retValue_acc ; [L645] COND TRUE waterLevel < 2 [L646] retValue_acc = 1 [L647] return (retValue_acc); [L953] tmp = isHighWaterSensorDry() [L955] COND TRUE \read(tmp) [L956] tmp___0 = 0 [L960] retValue_acc = tmp___0 [L961] return (retValue_acc); [L811] tmp = isHighWaterLevel() [L813] COND FALSE !(\read(tmp)) [L667] int tmp ; [L668] int tmp___0 ; [L669] int tmp___1 ; [L601] int retValue_acc ; [L604] retValue_acc = methaneLevelCritical [L605] return (retValue_acc); [L673] tmp = isMethaneLevelCritical() [L675] COND FALSE !(\read(tmp)) [L633] int retValue_acc ; [L636] retValue_acc = waterLevel [L637] return (retValue_acc); [L679] tmp___0 = getWaterLevel() [L681] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:14:25,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...