./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product48.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 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_product48.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 5f050ff3359f4c5814c7559cf768b732b843fd60 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-wip.dd.multireach-323-8d31f38 [2021-07-06 20:25:26,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:25:26,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:25:26,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:25:26,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:25:26,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:25:26,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:25:26,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:25:26,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:25:26,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:25:26,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:25:26,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:25:26,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:25:26,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:25:26,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:25:26,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:25:26,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:25:26,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:25:26,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:25:26,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:25:26,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:25:26,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:25:26,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:25:26,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:25:26,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:25:26,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:25:26,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:25:26,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:25:26,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:25:26,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:25:26,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:25:26,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:25:26,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:25:26,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:25:26,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:25:26,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:25:26,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:25:26,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:25:26,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:25:26,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:25:26,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:25:26,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:25:26,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:25:26,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:25:26,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:25:26,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:25:26,407 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:25:26,407 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:25:26,407 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:25:26,407 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:25:26,408 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:25:26,408 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:25:26,409 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:25:26,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:25:26,409 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:25:26,409 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:25:26,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:25:26,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:25:26,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:25:26,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:25:26,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:25:26,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:25:26,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:25:26,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:25:26,411 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:25:26,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:25:26,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:25:26,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:25:26,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:25:26,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:25:26,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:25:26,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:25:26,413 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:25:26,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f050ff3359f4c5814c7559cf768b732b843fd60 [2021-07-06 20:25:26,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:25:26,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:25:26,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:25:26,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:25:26,774 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:25:26,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product48.cil.c [2021-07-06 20:25:26,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0831b0a9/557dc8922b8140c6bdb611400474e82f/FLAG8aaa09064 [2021-07-06 20:25:27,244 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:25:27,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product48.cil.c [2021-07-06 20:25:27,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0831b0a9/557dc8922b8140c6bdb611400474e82f/FLAG8aaa09064 [2021-07-06 20:25:27,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0831b0a9/557dc8922b8140c6bdb611400474e82f [2021-07-06 20:25:27,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:25:27,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:25:27,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:25:27,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:25:27,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:25:27,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:25:27" (1/1) ... [2021-07-06 20:25:27,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b19940c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27, skipping insertion in model container [2021-07-06 20:25:27,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:25:27" (1/1) ... [2021-07-06 20:25:27,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:25:27,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:25:27,752 WARN L224 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_product48.cil.c[1281,1294] [2021-07-06 20:25:27,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:25:27,893 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:25:27,903 WARN L224 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_product48.cil.c[1281,1294] [2021-07-06 20:25:27,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:25:27,996 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:25:27,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27 WrapperNode [2021-07-06 20:25:27,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:25:27,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:25:27,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:25:27,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:25:28,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27" (1/1) ... [2021-07-06 20:25:28,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27" (1/1) ... [2021-07-06 20:25:28,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:25:28,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:25:28,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:25:28,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:25:28,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27" (1/1) ... [2021-07-06 20:25:28,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27" (1/1) ... [2021-07-06 20:25:28,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27" (1/1) ... [2021-07-06 20:25:28,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27" (1/1) ... [2021-07-06 20:25:28,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27" (1/1) ... [2021-07-06 20:25:28,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27" (1/1) ... [2021-07-06 20:25:28,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27" (1/1) ... [2021-07-06 20:25:28,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:25:28,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:25:28,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:25:28,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:25:28,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27" (1/1) ... [2021-07-06 20:25:28,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:25:28,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:25:28,154 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) [2021-07-06 20:25:28,173 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 [2021-07-06 20:25:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:25:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:25:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:25:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:25:29,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:25:29,070 INFO L299 CfgBuilder]: Removed 204 assume(true) statements. [2021-07-06 20:25:29,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:25:29 BoogieIcfgContainer [2021-07-06 20:25:29,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:25:29,073 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:25:29,074 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:25:29,077 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:25:29,077 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:25:29,078 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:25:27" (1/3) ... [2021-07-06 20:25:29,079 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56aa8639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:25:29, skipping insertion in model container [2021-07-06 20:25:29,079 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:25:29,080 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:27" (2/3) ... [2021-07-06 20:25:29,080 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56aa8639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:25:29, skipping insertion in model container [2021-07-06 20:25:29,080 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:25:29,080 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:25:29" (3/3) ... [2021-07-06 20:25:29,082 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product48.cil.c [2021-07-06 20:25:29,123 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:25:29,124 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:25:29,124 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:25:29,124 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:25:29,124 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:25:29,124 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:25:29,125 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:25:29,125 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:25:29,140 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 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) [2021-07-06 20:25:29,161 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-07-06 20:25:29,161 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:29,161 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:29,168 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:29,168 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:25:29,168 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:25:29,169 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 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) [2021-07-06 20:25:29,178 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-07-06 20:25:29,179 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:29,179 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:29,179 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:29,180 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:25:29,185 INFO L791 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 17#L-1true havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 20#L76true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 16#L84true main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 42#L532true assume 0 != main_~tmp~5; 21#L508true havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 103#L107-1true [2021-07-06 20:25:29,186 INFO L793 eck$LassoCheckResult]: Loop: 103#L107-1true assume !false; 37#L557true assume test_~splverifierCounter~0 < 4; 118#L558true test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 12#L566true assume !(0 != test_~tmp~6); 14#L566-1true test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 48#L576true assume !(0 != test_~tmp___0~2); 50#L576-1true test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 100#L586true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 111#L594-1true assume !(0 != ~pumpRunning~0); 34#L238true assume !(0 != ~systemActive~0); 83#L245true havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;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~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 53#L174-3true __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 119#L101true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 103#L107-1true [2021-07-06 20:25:29,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:29,192 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:25:29,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:29,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835671713] [2021-07-06 20:25:29,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:29,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:29,435 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:29,544 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:29,587 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:29,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:29,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1669770369, now seen corresponding path program 1 times [2021-07-06 20:25:29,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:29,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110841652] [2021-07-06 20:25:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:29,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:25:29,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:29,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:29,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:29,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:29,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:29,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:25:29,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:25:29,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110841652] [2021-07-06 20:25:29,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110841652] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:25:29,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:25:29,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:25:29,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854880747] [2021-07-06 20:25:29,651 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:25:29,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:25:29,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:25:29,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:25:29,666 INFO L87 Difference]: Start difference. First operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 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) [2021-07-06 20:25:29,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:25:29,719 INFO L93 Difference]: Finished difference Result 262 states and 378 transitions. [2021-07-06 20:25:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:25:29,721 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 262 states and 378 transitions. [2021-07-06 20:25:29,727 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 170 [2021-07-06 20:25:29,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 262 states to 248 states and 363 transitions. [2021-07-06 20:25:29,733 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 248 [2021-07-06 20:25:29,734 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 248 [2021-07-06 20:25:29,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 248 states and 363 transitions. [2021-07-06 20:25:29,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:25:29,737 INFO L681 BuchiCegarLoop]: Abstraction has 248 states and 363 transitions. [2021-07-06 20:25:29,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states and 363 transitions. [2021-07-06 20:25:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2021-07-06 20:25:29,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 246 states have (on average 1.4634146341463414) internal successors, (360), 245 states have internal predecessors, (360), 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) [2021-07-06 20:25:29,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 360 transitions. [2021-07-06 20:25:29,787 INFO L704 BuchiCegarLoop]: Abstraction has 246 states and 360 transitions. [2021-07-06 20:25:29,787 INFO L587 BuchiCegarLoop]: Abstraction has 246 states and 360 transitions. [2021-07-06 20:25:29,787 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:25:29,787 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 246 states and 360 transitions. [2021-07-06 20:25:29,790 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 168 [2021-07-06 20:25:29,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:29,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:29,791 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:29,791 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:25:29,791 INFO L791 eck$LassoCheckResult]: Stem: 518#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 436#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 437#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 434#L84 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 435#L532 assume 0 != main_~tmp~5; 440#L508 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 441#L107-1 [2021-07-06 20:25:29,791 INFO L793 eck$LassoCheckResult]: Loop: 441#L107-1 assume !false; 469#L557 assume test_~splverifierCounter~0 < 4; 470#L558 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 561#L566 assume !(0 != test_~tmp~6); 559#L566-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 558#L576 assume !(0 != test_~tmp___0~2); 556#L576-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 527#L586 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 528#L594-1 assume !(0 != ~pumpRunning~0); 464#L238 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 465#L296 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 500#L270-1 assume !(0 == ~pumpRunning~0); 418#L245 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;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~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 517#L174-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 566#L101 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 441#L107-1 [2021-07-06 20:25:29,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:29,792 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:25:29,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:29,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337611905] [2021-07-06 20:25:29,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:29,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:29,829 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:29,866 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:29,878 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:29,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:29,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1411824415, now seen corresponding path program 1 times [2021-07-06 20:25:29,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:29,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265391490] [2021-07-06 20:25:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:29,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:25:29,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:29,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:29,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:29,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:29,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:29,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:25:29,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:25:29,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265391490] [2021-07-06 20:25:29,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265391490] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:25:29,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:25:29,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:25:29,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63867385] [2021-07-06 20:25:29,894 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:25:29,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:25:29,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:25:29,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:25:29,895 INFO L87 Difference]: Start difference. First operand 246 states and 360 transitions. cyclomatic complexity: 117 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) [2021-07-06 20:25:29,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:25:29,974 INFO L93 Difference]: Finished difference Result 341 states and 478 transitions. [2021-07-06 20:25:29,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:25:29,975 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 341 states and 478 transitions. [2021-07-06 20:25:29,977 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2021-07-06 20:25:29,979 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 341 states to 341 states and 478 transitions. [2021-07-06 20:25:29,980 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 341 [2021-07-06 20:25:29,980 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 341 [2021-07-06 20:25:29,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 341 states and 478 transitions. [2021-07-06 20:25:29,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:25:29,982 INFO L681 BuchiCegarLoop]: Abstraction has 341 states and 478 transitions. [2021-07-06 20:25:29,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states and 478 transitions. [2021-07-06 20:25:29,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-07-06 20:25:29,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 341 states have (on average 1.401759530791789) internal successors, (478), 340 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) [2021-07-06 20:25:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 478 transitions. [2021-07-06 20:25:29,994 INFO L704 BuchiCegarLoop]: Abstraction has 341 states and 478 transitions. [2021-07-06 20:25:29,994 INFO L587 BuchiCegarLoop]: Abstraction has 341 states and 478 transitions. [2021-07-06 20:25:29,994 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:25:29,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 341 states and 478 transitions. [2021-07-06 20:25:29,996 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2021-07-06 20:25:29,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:29,996 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:29,997 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:29,997 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] [2021-07-06 20:25:29,997 INFO L791 eck$LassoCheckResult]: Stem: 1112#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1027#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 1028#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1025#L84 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 1026#L532 assume 0 != main_~tmp~5; 1031#L508 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1032#L107-1 [2021-07-06 20:25:29,997 INFO L793 eck$LassoCheckResult]: Loop: 1032#L107-1 assume !false; 1058#L557 assume test_~splverifierCounter~0 < 4; 1059#L558 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 1018#L566 assume !(0 != test_~tmp~6); 1020#L566-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 1023#L576 assume !(0 != test_~tmp___0~2); 1076#L576-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 1077#L586 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1128#L594-1 assume !(0 != ~pumpRunning~0); 1140#L238 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1223#L296 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 1222#L270-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 1221#L214-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~4 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 1001#L219-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 1002#L415-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1139#L415-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 1097#L421-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 1009#L274-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 1010#L245 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;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~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 1230#L174-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 1148#L101 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 1032#L107-1 [2021-07-06 20:25:29,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:29,998 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-07-06 20:25:29,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:29,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465077975] [2021-07-06 20:25:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:29,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:30,030 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:30,098 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:30,108 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:30,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:30,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1301686415, now seen corresponding path program 1 times [2021-07-06 20:25:30,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:30,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494995305] [2021-07-06 20:25:30,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:30,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:25:30,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:30,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:30,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:30,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:30,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:30,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:30,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:30,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:25:30,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:25:30,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494995305] [2021-07-06 20:25:30,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494995305] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:25:30,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:25:30,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 20:25:30,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501023069] [2021-07-06 20:25:30,135 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:25:30,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:25:30,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 20:25:30,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 20:25:30,136 INFO L87 Difference]: Start difference. First operand 341 states and 478 transitions. cyclomatic complexity: 140 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-07-06 20:25:30,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:25:30,224 INFO L93 Difference]: Finished difference Result 963 states and 1326 transitions. [2021-07-06 20:25:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-06 20:25:30,225 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 963 states and 1326 transitions. [2021-07-06 20:25:30,231 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 685 [2021-07-06 20:25:30,236 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 963 states to 963 states and 1326 transitions. [2021-07-06 20:25:30,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 963 [2021-07-06 20:25:30,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 963 [2021-07-06 20:25:30,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 963 states and 1326 transitions. [2021-07-06 20:25:30,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:25:30,240 INFO L681 BuchiCegarLoop]: Abstraction has 963 states and 1326 transitions. [2021-07-06 20:25:30,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states and 1326 transitions. [2021-07-06 20:25:30,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 365. [2021-07-06 20:25:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 365 states have (on average 1.3753424657534246) internal successors, (502), 364 states have internal predecessors, (502), 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) [2021-07-06 20:25:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 502 transitions. [2021-07-06 20:25:30,279 INFO L704 BuchiCegarLoop]: Abstraction has 365 states and 502 transitions. [2021-07-06 20:25:30,279 INFO L587 BuchiCegarLoop]: Abstraction has 365 states and 502 transitions. [2021-07-06 20:25:30,279 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 20:25:30,279 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 365 states and 502 transitions. [2021-07-06 20:25:30,281 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 255 [2021-07-06 20:25:30,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:30,282 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:30,283 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:30,284 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] [2021-07-06 20:25:30,285 INFO L791 eck$LassoCheckResult]: Stem: 2439#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 2342#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 2343#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 2340#L84 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 2341#L532 assume 0 != main_~tmp~5; 2348#L508 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2349#L107-1 [2021-07-06 20:25:30,285 INFO L793 eck$LassoCheckResult]: Loop: 2349#L107-1 assume !false; 2517#L557 assume test_~splverifierCounter~0 < 4; 2516#L558 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 2515#L566 assume !(0 != test_~tmp~6); 2513#L566-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 2391#L576 assume !(0 != test_~tmp___0~2); 2366#L576-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 2393#L586 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2464#L594-1 assume !(0 != ~pumpRunning~0); 2369#L238 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 2336#L296 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 2337#L270-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 2413#L214-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 2625#L219-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 2623#L415-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 2621#L415-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 2619#L421-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 2616#L274-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 2332#L245 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;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~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 2530#L174-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 2524#L101 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 2349#L107-1 [2021-07-06 20:25:30,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:30,286 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-07-06 20:25:30,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:30,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36777467] [2021-07-06 20:25:30,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:30,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:30,309 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:30,341 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:30,360 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:30,361 INFO L82 PathProgramCache]: Analyzing trace with hash 621628045, now seen corresponding path program 1 times [2021-07-06 20:25:30,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:30,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332662274] [2021-07-06 20:25:30,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:30,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:30,374 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:30,378 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:30,383 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:30,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:30,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1077699239, now seen corresponding path program 1 times [2021-07-06 20:25:30,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:30,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620074247] [2021-07-06 20:25:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:30,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:25:30,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:30,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:30,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:30,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:30,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:30,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:25:30,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:25:30,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620074247] [2021-07-06 20:25:30,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620074247] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:25:30,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:25:30,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:25:30,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576714889] [2021-07-06 20:25:30,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:30,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-07-06 20:25:30,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:25:30,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:25:30,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:25:30,623 INFO L87 Difference]: Start difference. First operand 365 states and 502 transitions. cyclomatic complexity: 140 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) [2021-07-06 20:25:30,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:25:30,789 INFO L93 Difference]: Finished difference Result 1228 states and 1690 transitions. [2021-07-06 20:25:30,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 20:25:30,789 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1228 states and 1690 transitions. [2021-07-06 20:25:30,797 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 907 [2021-07-06 20:25:30,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1228 states to 1228 states and 1690 transitions. [2021-07-06 20:25:30,805 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1228 [2021-07-06 20:25:30,806 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1228 [2021-07-06 20:25:30,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1228 states and 1690 transitions. [2021-07-06 20:25:30,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:25:30,807 INFO L681 BuchiCegarLoop]: Abstraction has 1228 states and 1690 transitions. [2021-07-06 20:25:30,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states and 1690 transitions. [2021-07-06 20:25:30,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 724. [2021-07-06 20:25:30,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 724 states have (on average 1.356353591160221) internal successors, (982), 723 states have internal predecessors, (982), 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) [2021-07-06 20:25:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 982 transitions. [2021-07-06 20:25:30,840 INFO L704 BuchiCegarLoop]: Abstraction has 724 states and 982 transitions. [2021-07-06 20:25:30,840 INFO L587 BuchiCegarLoop]: Abstraction has 724 states and 982 transitions. [2021-07-06 20:25:30,840 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-07-06 20:25:30,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 724 states and 982 transitions. [2021-07-06 20:25:30,844 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 510 [2021-07-06 20:25:30,844 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:30,844 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:30,845 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:30,845 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] [2021-07-06 20:25:30,846 INFO L791 eck$LassoCheckResult]: Stem: 4050#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 3955#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 3956#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 3953#L84 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 3954#L532 assume 0 != main_~tmp~5; 3959#L508 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3960#L107-1 [2021-07-06 20:25:30,850 INFO L793 eck$LassoCheckResult]: Loop: 3960#L107-1 assume !false; 4307#L557 assume test_~splverifierCounter~0 < 4; 4306#L558 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 4305#L566 assume !(0 != test_~tmp~6); 4303#L566-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 4302#L576 assume !(0 != test_~tmp___0~2); 4009#L576-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 4010#L586 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 4067#L594-1 assume !(0 != ~pumpRunning~0); 4293#L238 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 4327#L296 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 4229#L270-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 4326#L214-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 4300#L219-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 4298#L415-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 4290#L415-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 4273#L421-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 4221#L274-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 4206#L245 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;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~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 4314#L174-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 4313#L101 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~3;havoc getWaterLevel_~retValue_acc~3;getWaterLevel_~retValue_acc~3 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~3; 4312#L206 __utac_acc__Specification3_spec__1_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret9;havoc __utac_acc__Specification3_spec__1_#t~ret9; 4309#L107 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 3960#L107-1 [2021-07-06 20:25:30,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:30,851 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 5 times [2021-07-06 20:25:30,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:30,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11356842] [2021-07-06 20:25:30,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:30,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:30,877 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:30,918 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:30,926 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:30,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:30,927 INFO L82 PathProgramCache]: Analyzing trace with hash 384105791, now seen corresponding path program 1 times [2021-07-06 20:25:30,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:30,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040467828] [2021-07-06 20:25:30,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:30,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:30,934 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:30,938 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:30,943 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:30,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:30,944 INFO L82 PathProgramCache]: Analyzing trace with hash 581859033, now seen corresponding path program 1 times [2021-07-06 20:25:30,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:30,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452443537] [2021-07-06 20:25:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:30,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:30,983 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:31,025 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:31,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:31,173 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-06 20:25:31,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:31,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-07-06 20:26:12,458 WARN L205 SmtUtils]: Spent 41.21 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:26:12,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:12,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:26:33,365 WARN L205 SmtUtils]: Spent 20.81 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:26:33,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:26:33 BoogieIcfgContainer [2021-07-06 20:26:33,497 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:26:33,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:26:33,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:26:33,498 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:26:33,498 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:25:29" (3/4) ... [2021-07-06 20:26:33,500 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:26:33,545 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:26:33,559 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:26:33,560 INFO L168 Benchmark]: Toolchain (without parser) took 65972.13 ms. Allocated memory was 50.3 MB in the beginning and 130.0 MB in the end (delta: 79.7 MB). Free memory was 26.1 MB in the beginning and 60.1 MB in the end (delta: -34.0 MB). Peak memory consumption was 45.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:33,560 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 31.7 MB in the end (delta: 33.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:26:33,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.23 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.9 MB in the beginning and 33.3 MB in the end (delta: -7.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:33,577 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.30 ms. Allocated memory is still 60.8 MB. Free memory was 33.3 MB in the beginning and 29.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:33,577 INFO L168 Benchmark]: Boogie Preprocessor took 66.70 ms. Allocated memory is still 60.8 MB. Free memory was 29.3 MB in the beginning and 41.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:33,577 INFO L168 Benchmark]: RCFGBuilder took 946.40 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.7 MB in the beginning and 45.9 MB in the end (delta: -4.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:33,578 INFO L168 Benchmark]: BuchiAutomizer took 64423.74 ms. Allocated memory was 73.4 MB in the beginning and 130.0 MB in the end (delta: 56.6 MB). Free memory was 45.9 MB in the beginning and 63.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:33,578 INFO L168 Benchmark]: Witness Printer took 61.43 ms. Allocated memory is still 130.0 MB. Free memory was 63.1 MB in the beginning and 60.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:33,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 31.7 MB in the end (delta: 33.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 406.23 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.9 MB in the beginning and 33.3 MB in the end (delta: -7.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.30 ms. Allocated memory is still 60.8 MB. Free memory was 33.3 MB in the beginning and 29.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.70 ms. Allocated memory is still 60.8 MB. Free memory was 29.3 MB in the beginning and 41.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 946.40 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.7 MB in the beginning and 45.9 MB in the end (delta: -4.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 64423.74 ms. Allocated memory was 73.4 MB in the beginning and 130.0 MB in the end (delta: 56.6 MB). Free memory was 45.9 MB in the beginning and 63.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 16.1 GB. * Witness Printer took 61.43 ms. Allocated memory is still 130.0 MB. Free memory was 63.1 MB in the beginning and 60.1 MB in the end (delta: 3.0 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 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 724 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 64.3s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 63.6s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 121.0ms AutomataMinimizationTime, 4 MinimizatonAttempts, 1104 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 724 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 996 SDtfs, 1400 SDslu, 1490 SDs, 0 SdLazy, 233 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 211.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 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: 556]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31473} State at position 1 is {NULL=0, NULL=31473, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6805d34d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@165fcfd4=64, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@33ac2042=0, NULL=31489, methaneLevelCritical=0, NULL=0, tmp=0, NULL=31474, NULL=0, tmp___1=0, retValue_acc=0, NULL=0, NULL=31486, NULL=31499, tmp=0, cleanupTimeShifts=4, NULL=31483, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@783d2f6e=0, waterLevel=1, NULL=0, NULL=0, NULL=0, retValue_acc=1, \result=1, head=0, pumpRunning=0, NULL=31484, retValue_acc=1, NULL=0, NULL=0, NULL=0, tmp=1, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=31485, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=31495, NULL=31487, NULL=31488, tmp=0, head=0, tmp=0, NULL=0, NULL=0, NULL=31492, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@328e6833=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f87821e=0, NULL=31482, retValue_acc=0, tmp___0=0, NULL=0, NULL=0, NULL=31490, NULL=0, NULL=0, tmp___0=1, NULL=31477, NULL=31481, NULL=0, systemActive=1, NULL=31476, \result=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e8d8025=0, NULL=31500, \result=0, retValue_acc=0, NULL=31475, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38695f8c=0, NULL=31501, \result=0, NULL=31498, NULL=0, NULL=0, NULL=31494, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ebe5a80=0, NULL=31493, NULL=31497, retValue_acc=1, tmp___2=64, splverifierCounter=0, NULL=0, \result=0, NULL=31496, NULL=31479, tmp___1=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36fc86db=0, NULL=31478, NULL=31491, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@33566607=0, NULL=31480} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L131] int waterLevel = 1; [L132] int methaneLevelCritical = 0; [L231] int pumpRunning = 0; [L232] int systemActive = 1; [L449] int cleanupTimeShifts = 4; [L784] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L523] int retValue_acc ; [L524] int tmp ; [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L530] tmp = valid_product() [L532] COND TRUE \read(tmp) [L547] int splverifierCounter ; [L548] int tmp ; [L549] int tmp___0 ; [L550] int tmp___1 ; [L551] int tmp___2 ; [L554] splverifierCounter = 0 Loop: [L556] COND TRUE 1 [L558] COND TRUE splverifierCounter < 4 [L564] tmp = __VERIFIER_nondet_int() [L566] COND FALSE !(\read(tmp)) [L574] tmp___0 = __VERIFIER_nondet_int() [L576] COND FALSE !(\read(tmp___0)) [L584] tmp___2 = __VERIFIER_nondet_int() [L586] COND TRUE \read(tmp___2) [L444] systemActive = 1 [L238] COND FALSE !(\read(pumpRunning)) [L245] COND TRUE \read(systemActive) [L293] int tmp ; [L296] COND FALSE !(\read(pumpRunning)) [L267] int tmp ; [L270] COND TRUE ! pumpRunning [L407] int retValue_acc ; [L408] int tmp ; [L409] int tmp___0 ; [L211] int retValue_acc ; [L214] COND TRUE waterLevel < 2 [L215] retValue_acc = 1 [L216] return (retValue_acc); [L413] tmp = isHighWaterSensorDry() [L415] COND TRUE \read(tmp) [L416] tmp___0 = 0 [L420] retValue_acc = tmp___0 [L421] return (retValue_acc); [L272] tmp = isHighWaterLevel() [L274] COND FALSE !(\read(tmp)) [L93] int tmp ; [L94] int tmp___0 ; [L95] int tmp___1 ; [L170] int retValue_acc ; [L173] retValue_acc = methaneLevelCritical [L174] return (retValue_acc); [L99] tmp = isMethaneLevelCritical() [L101] COND FALSE !(\read(tmp)) [L202] int retValue_acc ; [L205] retValue_acc = waterLevel [L206] return (retValue_acc); [L105] tmp___0 = getWaterLevel() [L107] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:26:33,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...