./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product41.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product41.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --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 0cfed743c16ce3c8683c42b92f2e032d4ce7b489a9d3a5e140ec6101c472b3cb --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:54:04,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:54:04,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-15 00:54:04,372 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:54:04,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:54:04,394 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:54:04,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:54:04,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:54:04,395 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:54:04,398 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:54:04,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:54:04,398 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:54:04,399 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:54:04,399 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-15 00:54:04,399 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-15 00:54:04,399 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-15 00:54:04,399 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-15 00:54:04,400 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-15 00:54:04,400 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-15 00:54:04,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:54:04,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-15 00:54:04,401 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:54:04,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:54:04,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:54:04,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:54:04,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-15 00:54:04,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-15 00:54:04,403 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-15 00:54:04,403 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:54:04,403 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:54:04,403 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:54:04,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:54:04,403 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-15 00:54:04,404 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:54:04,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:54:04,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:54:04,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:54:04,405 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:54:04,405 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-15 00:54:04,406 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cfed743c16ce3c8683c42b92f2e032d4ce7b489a9d3a5e140ec6101c472b3cb [2024-10-15 00:54:04,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:54:04,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:54:04,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:54:04,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:54:04,634 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:54:04,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product41.cil.c [2024-10-15 00:54:05,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:54:05,966 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:54:05,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product41.cil.c [2024-10-15 00:54:05,979 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99d166b1a/38d4409e97cc451f8a82110e23f9cc35/FLAGb81f41cd7 [2024-10-15 00:54:06,360 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99d166b1a/38d4409e97cc451f8a82110e23f9cc35 [2024-10-15 00:54:06,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:54:06,366 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:54:06,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:54:06,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:54:06,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:54:06,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3421c1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06, skipping insertion in model container [2024-10-15 00:54:06,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:54:06,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:54:06,610 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:54:06,618 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] [2024-10-15 00:54:06,619 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [87] [2024-10-15 00:54:06,619 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [267] [2024-10-15 00:54:06,620 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [335] [2024-10-15 00:54:06,620 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [371] [2024-10-15 00:54:06,620 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [465] [2024-10-15 00:54:06,620 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [561] [2024-10-15 00:54:06,620 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [927] [2024-10-15 00:54:06,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:54:06,701 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:54:06,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06 WrapperNode [2024-10-15 00:54:06,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:54:06,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:54:06,703 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:54:06,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:54:06,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,718 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,743 INFO L138 Inliner]: procedures = 53, calls = 97, calls flagged for inlining = 50, calls inlined = 62, statements flattened = 435 [2024-10-15 00:54:06,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:54:06,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:54:06,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:54:06,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:54:06,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,756 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,766 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-15 00:54:06,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,770 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:54:06,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:54:06,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:54:06,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:54:06,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (1/1) ... [2024-10-15 00:54:06,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:54:06,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:54:06,806 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) [2024-10-15 00:54:06,807 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 [2024-10-15 00:54:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:54:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:54:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:54:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:54:06,896 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:54:06,898 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:54:07,188 INFO L? ?]: Removed 103 outVars from TransFormulas that were not future-live. [2024-10-15 00:54:07,189 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:54:07,199 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:54:07,199 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-15 00:54:07,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:54:07 BoogieIcfgContainer [2024-10-15 00:54:07,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:54:07,200 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-15 00:54:07,200 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-15 00:54:07,203 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-15 00:54:07,203 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:54:07,203 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.10 12:54:06" (1/3) ... [2024-10-15 00:54:07,204 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60e4097d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 12:54:07, skipping insertion in model container [2024-10-15 00:54:07,204 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:54:07,204 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:54:06" (2/3) ... [2024-10-15 00:54:07,204 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60e4097d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 12:54:07, skipping insertion in model container [2024-10-15 00:54:07,204 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:54:07,205 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:54:07" (3/3) ... [2024-10-15 00:54:07,205 INFO L332 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2024-10-15 00:54:07,246 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-15 00:54:07,246 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-15 00:54:07,246 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-15 00:54:07,246 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-15 00:54:07,246 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-15 00:54:07,246 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-15 00:54:07,246 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-15 00:54:07,246 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-15 00:54:07,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 126 states, 125 states have (on average 1.368) internal successors, (171), 125 states have internal predecessors, (171), 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) [2024-10-15 00:54:07,271 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 80 [2024-10-15 00:54:07,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:54:07,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:54:07,277 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:07,277 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:07,278 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-15 00:54:07,278 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 126 states, 125 states have (on average 1.368) internal successors, (171), 125 states have internal predecessors, (171), 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) [2024-10-15 00:54:07,286 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 80 [2024-10-15 00:54:07,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:54:07,287 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:54:07,288 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:07,288 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:07,293 INFO L745 eck$LassoCheckResult]: Stem: 33#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 38#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 29#select_helpers_returnLabel#1true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 102#select_features_returnLabel#1true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 89#valid_product_returnLabel#1true main_#t~ret29#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 56#L548true assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 68#setup_returnLabel#1true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 74#L281-2true [2024-10-15 00:54:07,295 INFO L747 eck$LassoCheckResult]: Loop: 74#L281-2true assume !false; 7#L282true assume test_~splverifierCounter~0#1 < 4; 97#L283true havoc test_#t~nondet17#1;test_~tmp~3#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 78#L291true assume !(0 != test_~tmp~3#1); 77#L291-2true havoc test_#t~nondet18#1;test_~tmp___0~1#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 88#L301true assume !(0 != test_~tmp___0~1#1); 30#L301-2true havoc test_#t~nondet19#1;test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 46#L311true assume 0 != test_~tmp___2~0#1; 44#L317-2true assume { :begin_inline_timeShift } true; 23#L105true assume !(0 != ~pumpRunning~0); 39#L105-2true assume !(0 != ~systemActive~0); 64#L112-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;isMethaneLevelCritical_~retValue_acc~5#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~5#1; 67#isMethaneLevelCritical_returnLabel#2true __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 108#L347true assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 116#L353-1true havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :end_inline___utac_acc__Specification3_spec__1 } true; 59#timeShift_returnLabel#1true assume { :end_inline_timeShift } true; 74#L281-2true [2024-10-15 00:54:07,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:07,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2024-10-15 00:54:07,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:07,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208314940] [2024-10-15 00:54:07,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:07,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:07,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:54:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:07,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:54:07,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:07,421 INFO L85 PathProgramCache]: Analyzing trace with hash -325980586, now seen corresponding path program 1 times [2024-10-15 00:54:07,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:07,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308812855] [2024-10-15 00:54:07,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:07,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:07,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:54:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:07,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:54:07,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:07,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1029438490, now seen corresponding path program 1 times [2024-10-15 00:54:07,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:07,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671126107] [2024-10-15 00:54:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:07,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:54:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:54:07,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:54:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671126107] [2024-10-15 00:54:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671126107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:54:07,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:54:07,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 00:54:07,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942166115] [2024-10-15 00:54:07,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:54:07,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:54:07,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:54:07,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-15 00:54:07,684 INFO L87 Difference]: Start difference. First operand has 126 states, 125 states have (on average 1.368) internal successors, (171), 125 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-10-15 00:54:07,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:54:07,742 INFO L93 Difference]: Finished difference Result 120 states and 154 transitions. [2024-10-15 00:54:07,746 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 154 transitions. [2024-10-15 00:54:07,748 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 74 [2024-10-15 00:54:07,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 110 states and 144 transitions. [2024-10-15 00:54:07,757 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 110 [2024-10-15 00:54:07,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 110 [2024-10-15 00:54:07,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 144 transitions. [2024-10-15 00:54:07,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-15 00:54:07,759 INFO L218 hiAutomatonCegarLoop]: Abstraction has 110 states and 144 transitions. [2024-10-15 00:54:07,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 144 transitions. [2024-10-15 00:54:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-10-15 00:54:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 110 states have (on average 1.309090909090909) internal successors, (144), 109 states have internal predecessors, (144), 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) [2024-10-15 00:54:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2024-10-15 00:54:07,786 INFO L240 hiAutomatonCegarLoop]: Abstraction has 110 states and 144 transitions. [2024-10-15 00:54:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:54:07,791 INFO L425 stractBuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2024-10-15 00:54:07,792 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-15 00:54:07,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 144 transitions. [2024-10-15 00:54:07,794 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 74 [2024-10-15 00:54:07,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:54:07,795 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:54:07,795 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:07,795 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:07,796 INFO L745 eck$LassoCheckResult]: Stem: 310#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 311#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 305#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 306#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 362#valid_product_returnLabel#1 main_#t~ret29#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 331#L548 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 332#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 337#L281-2 [2024-10-15 00:54:07,796 INFO L747 eck$LassoCheckResult]: Loop: 337#L281-2 assume !false; 270#L282 assume test_~splverifierCounter~0#1 < 4; 271#L283 havoc test_#t~nondet17#1;test_~tmp~3#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 354#L291 assume !(0 != test_~tmp~3#1); 352#L291-2 havoc test_#t~nondet18#1;test_~tmp___0~1#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 353#L301 assume !(0 != test_~tmp___0~1#1); 307#L301-2 havoc test_#t~nondet19#1;test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 308#L311 assume 0 != test_~tmp___2~0#1; 278#L317-2 assume { :begin_inline_timeShift } true; 296#L105 assume !(0 != ~pumpRunning~0); 297#L105-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;havoc processEnvironment_~tmp~0#1; 318#L137 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 333#processEnvironment__wrappee__base_returnLabel#2 assume { :end_inline_processEnvironment__wrappee__base } true; 292#L137-1 havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;assume { :end_inline_processEnvironment } true; 343#L112-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;isMethaneLevelCritical_~retValue_acc~5#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~5#1; 344#isMethaneLevelCritical_returnLabel#2 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 345#L347 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 328#L353-1 havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :end_inline___utac_acc__Specification3_spec__1 } true; 336#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 337#L281-2 [2024-10-15 00:54:07,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:07,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2024-10-15 00:54:07,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:07,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460591668] [2024-10-15 00:54:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:07,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:07,811 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:54:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:07,817 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:54:07,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:07,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1621737077, now seen corresponding path program 1 times [2024-10-15 00:54:07,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:07,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106916049] [2024-10-15 00:54:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:07,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:54:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:54:07,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:54:07,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106916049] [2024-10-15 00:54:07,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106916049] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:54:07,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:54:07,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:54:07,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119410198] [2024-10-15 00:54:07,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:54:07,846 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-15 00:54:07,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:54:07,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:54:07,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:54:07,847 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-10-15 00:54:07,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:54:07,903 INFO L93 Difference]: Finished difference Result 171 states and 218 transitions. [2024-10-15 00:54:07,904 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 171 states and 218 transitions. [2024-10-15 00:54:07,905 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 120 [2024-10-15 00:54:07,909 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 171 states to 171 states and 218 transitions. [2024-10-15 00:54:07,909 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 171 [2024-10-15 00:54:07,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 171 [2024-10-15 00:54:07,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 171 states and 218 transitions. [2024-10-15 00:54:07,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-15 00:54:07,912 INFO L218 hiAutomatonCegarLoop]: Abstraction has 171 states and 218 transitions. [2024-10-15 00:54:07,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states and 218 transitions. [2024-10-15 00:54:07,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-10-15 00:54:07,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 171 states have (on average 1.2748538011695907) internal successors, (218), 170 states have internal predecessors, (218), 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) [2024-10-15 00:54:07,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 218 transitions. [2024-10-15 00:54:07,924 INFO L240 hiAutomatonCegarLoop]: Abstraction has 171 states and 218 transitions. [2024-10-15 00:54:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:54:07,925 INFO L425 stractBuchiCegarLoop]: Abstraction has 171 states and 218 transitions. [2024-10-15 00:54:07,925 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-15 00:54:07,927 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 171 states and 218 transitions. [2024-10-15 00:54:07,928 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 120 [2024-10-15 00:54:07,928 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:54:07,928 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:54:07,929 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:07,929 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:07,929 INFO L745 eck$LassoCheckResult]: Stem: 597#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 598#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 591#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 592#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 657#valid_product_returnLabel#1 main_#t~ret29#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 622#L548 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 623#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 627#L281-2 [2024-10-15 00:54:07,929 INFO L747 eck$LassoCheckResult]: Loop: 627#L281-2 assume !false; 557#L282 assume test_~splverifierCounter~0#1 < 4; 558#L283 havoc test_#t~nondet17#1;test_~tmp~3#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 648#L291 assume !(0 != test_~tmp~3#1); 646#L291-2 havoc test_#t~nondet18#1;test_~tmp___0~1#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 647#L301 assume !(0 != test_~tmp___0~1#1); 593#L301-2 havoc test_#t~nondet19#1;test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 594#L311 assume 0 != test_~tmp___2~0#1; 565#L317-2 assume { :begin_inline_timeShift } true; 582#L105 assume !(0 != ~pumpRunning~0); 583#L105-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;havoc processEnvironment_~tmp~0#1; 606#L137 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret16#1, isHighWaterLevel_~retValue_acc~4#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~4#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~7#1;havoc isHighWaterSensorDry_~retValue_acc~7#1; 562#L455 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~7#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~7#1; 563#isHighWaterSensorDry_returnLabel#1 isHighWaterLevel_#t~ret16#1 := isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~7#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret16#1;havoc isHighWaterLevel_#t~ret16#1; 581#L257 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 607#L257-2 isHighWaterLevel_~retValue_acc~4#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~4#1; 608#isHighWaterLevel_returnLabel#1 processEnvironment_#t~ret5#1 := isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret16#1, isHighWaterLevel_~retValue_acc~4#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~0#1 := processEnvironment_#t~ret5#1;havoc processEnvironment_#t~ret5#1; 611#L141 assume !(0 != processEnvironment_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 577#processEnvironment__wrappee__base_returnLabel#1 assume { :end_inline_processEnvironment__wrappee__base } true; 578#L137-1 havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;assume { :end_inline_processEnvironment } true; 721#L112-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;isMethaneLevelCritical_~retValue_acc~5#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~5#1; 635#isMethaneLevelCritical_returnLabel#2 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 636#L347 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 616#L353-1 havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :end_inline___utac_acc__Specification3_spec__1 } true; 626#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 627#L281-2 [2024-10-15 00:54:07,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:07,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2024-10-15 00:54:07,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:07,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312056822] [2024-10-15 00:54:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:07,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:07,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:54:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:07,956 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:54:07,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash 105517631, now seen corresponding path program 1 times [2024-10-15 00:54:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:07,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134214936] [2024-10-15 00:54:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:07,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:54:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:54:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:54:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134214936] [2024-10-15 00:54:08,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134214936] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:54:08,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:54:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:54:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493609455] [2024-10-15 00:54:08,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:54:08,055 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-15 00:54:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:54:08,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:54:08,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:54:08,055 INFO L87 Difference]: Start difference. First operand 171 states and 218 transitions. cyclomatic complexity: 49 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-10-15 00:54:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:54:08,117 INFO L93 Difference]: Finished difference Result 177 states and 224 transitions. [2024-10-15 00:54:08,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 224 transitions. [2024-10-15 00:54:08,118 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 124 [2024-10-15 00:54:08,121 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 177 states and 224 transitions. [2024-10-15 00:54:08,123 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 177 [2024-10-15 00:54:08,123 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 177 [2024-10-15 00:54:08,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 224 transitions. [2024-10-15 00:54:08,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-15 00:54:08,124 INFO L218 hiAutomatonCegarLoop]: Abstraction has 177 states and 224 transitions. [2024-10-15 00:54:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 224 transitions. [2024-10-15 00:54:08,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-10-15 00:54:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 177 states have (on average 1.265536723163842) internal successors, (224), 176 states have internal predecessors, (224), 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) [2024-10-15 00:54:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 224 transitions. [2024-10-15 00:54:08,130 INFO L240 hiAutomatonCegarLoop]: Abstraction has 177 states and 224 transitions. [2024-10-15 00:54:08,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:54:08,131 INFO L425 stractBuchiCegarLoop]: Abstraction has 177 states and 224 transitions. [2024-10-15 00:54:08,131 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-15 00:54:08,132 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 177 states and 224 transitions. [2024-10-15 00:54:08,132 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 124 [2024-10-15 00:54:08,133 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:54:08,133 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:54:08,133 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:08,133 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:08,133 INFO L745 eck$LassoCheckResult]: Stem: 956#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 957#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 950#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 951#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 1017#valid_product_returnLabel#1 main_#t~ret29#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 982#L548 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 983#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 996#L281-2 [2024-10-15 00:54:08,134 INFO L747 eck$LassoCheckResult]: Loop: 996#L281-2 assume !false; 1051#L282 assume test_~splverifierCounter~0#1 < 4; 1052#L283 havoc test_#t~nondet17#1;test_~tmp~3#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 1068#L291 assume !(0 != test_~tmp~3#1); 1061#L291-2 havoc test_#t~nondet18#1;test_~tmp___0~1#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 1058#L301 assume !(0 != test_~tmp___0~1#1); 1055#L301-2 havoc test_#t~nondet19#1;test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 1054#L311 assume 0 != test_~tmp___2~0#1; 1033#L317-2 assume { :begin_inline_timeShift } true; 938#L105 assume !(0 != ~pumpRunning~0); 939#L105-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;havoc processEnvironment_~tmp~0#1; 964#L137 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret16#1, isHighWaterLevel_~retValue_acc~4#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~4#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~7#1;havoc isHighWaterSensorDry_~retValue_acc~7#1; 917#L455 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~7#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~7#1; 918#isHighWaterSensorDry_returnLabel#1 isHighWaterLevel_#t~ret16#1 := isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~7#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret16#1;havoc isHighWaterLevel_#t~ret16#1; 1029#L257 assume !(0 != isHighWaterLevel_~tmp~2#1);isHighWaterLevel_~tmp___0~0#1 := 1; 965#L257-2 isHighWaterLevel_~retValue_acc~4#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~4#1; 966#isHighWaterLevel_returnLabel#1 processEnvironment_#t~ret5#1 := isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret16#1, isHighWaterLevel_~retValue_acc~4#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~0#1 := processEnvironment_#t~ret5#1;havoc processEnvironment_#t~ret5#1; 969#L141 assume !(0 != processEnvironment_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 933#processEnvironment__wrappee__base_returnLabel#1 assume { :end_inline_processEnvironment__wrappee__base } true; 934#L137-1 havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;assume { :end_inline_processEnvironment } true; 1071#L112-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;isMethaneLevelCritical_~retValue_acc~5#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~5#1; 1070#isMethaneLevelCritical_returnLabel#2 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 1062#L347 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 1060#L353-1 havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1056#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 996#L281-2 [2024-10-15 00:54:08,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:08,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2024-10-15 00:54:08,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:08,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980677298] [2024-10-15 00:54:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:08,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:08,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:54:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:08,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:54:08,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:08,148 INFO L85 PathProgramCache]: Analyzing trace with hash 806582209, now seen corresponding path program 1 times [2024-10-15 00:54:08,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:08,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187330477] [2024-10-15 00:54:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:08,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:54:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:54:08,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:54:08,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187330477] [2024-10-15 00:54:08,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187330477] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:54:08,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:54:08,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 00:54:08,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999011475] [2024-10-15 00:54:08,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:54:08,201 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-15 00:54:08,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:54:08,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:54:08,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:54:08,202 INFO L87 Difference]: Start difference. First operand 177 states and 224 transitions. cyclomatic complexity: 49 Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2024-10-15 00:54:08,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:54:08,263 INFO L93 Difference]: Finished difference Result 186 states and 233 transitions. [2024-10-15 00:54:08,263 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 186 states and 233 transitions. [2024-10-15 00:54:08,264 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 130 [2024-10-15 00:54:08,266 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 186 states to 186 states and 233 transitions. [2024-10-15 00:54:08,266 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2024-10-15 00:54:08,266 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 186 [2024-10-15 00:54:08,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 186 states and 233 transitions. [2024-10-15 00:54:08,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-15 00:54:08,270 INFO L218 hiAutomatonCegarLoop]: Abstraction has 186 states and 233 transitions. [2024-10-15 00:54:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states and 233 transitions. [2024-10-15 00:54:08,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2024-10-15 00:54:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 186 states have (on average 1.2526881720430108) internal successors, (233), 185 states have internal predecessors, (233), 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) [2024-10-15 00:54:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2024-10-15 00:54:08,282 INFO L240 hiAutomatonCegarLoop]: Abstraction has 186 states and 233 transitions. [2024-10-15 00:54:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:54:08,283 INFO L425 stractBuchiCegarLoop]: Abstraction has 186 states and 233 transitions. [2024-10-15 00:54:08,283 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-15 00:54:08,283 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 186 states and 233 transitions. [2024-10-15 00:54:08,284 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 130 [2024-10-15 00:54:08,284 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:54:08,284 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:54:08,285 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:08,285 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:08,285 INFO L745 eck$LassoCheckResult]: Stem: 1326#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1327#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 1320#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1321#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 1387#valid_product_returnLabel#1 main_#t~ret29#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 1352#L548 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 1353#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1357#L281-2 [2024-10-15 00:54:08,285 INFO L747 eck$LassoCheckResult]: Loop: 1357#L281-2 assume !false; 1283#L282 assume test_~splverifierCounter~0#1 < 4; 1284#L283 havoc test_#t~nondet17#1;test_~tmp~3#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 1423#L291 assume !(0 != test_~tmp~3#1); 1420#L291-2 havoc test_#t~nondet18#1;test_~tmp___0~1#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 1417#L301 assume !(0 != test_~tmp___0~1#1); 1414#L301-2 havoc test_#t~nondet19#1;test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 1412#L311 assume 0 != test_~tmp___2~0#1; 1341#L317-2 assume { :begin_inline_timeShift } true; 1309#L105 assume !(0 != ~pumpRunning~0); 1310#L105-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;havoc processEnvironment_~tmp~0#1; 1334#L137 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret16#1, isHighWaterLevel_~retValue_acc~4#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~4#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~7#1;havoc isHighWaterSensorDry_~retValue_acc~7#1; 1288#L455 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~7#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~7#1; 1290#isHighWaterSensorDry_returnLabel#1 isHighWaterLevel_#t~ret16#1 := isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~7#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret16#1;havoc isHighWaterLevel_#t~ret16#1; 1308#L257 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 1335#L257-2 isHighWaterLevel_~retValue_acc~4#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~4#1; 1336#isHighWaterLevel_returnLabel#1 processEnvironment_#t~ret5#1 := isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret16#1, isHighWaterLevel_~retValue_acc~4#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~0#1 := processEnvironment_#t~ret5#1;havoc processEnvironment_#t~ret5#1; 1396#L141 assume !(0 != processEnvironment_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1304#processEnvironment__wrappee__base_returnLabel#1 assume { :end_inline_processEnvironment__wrappee__base } true; 1305#L137-1 havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;assume { :end_inline_processEnvironment } true; 1363#L112-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;isMethaneLevelCritical_~retValue_acc~5#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~5#1; 1364#isMethaneLevelCritical_returnLabel#2 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 1365#L347 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 1345#L353-1 havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1356#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 1357#L281-2 [2024-10-15 00:54:08,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:08,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 5 times [2024-10-15 00:54:08,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:08,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225812276] [2024-10-15 00:54:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:08,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:08,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:54:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:08,300 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:54:08,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash 692323645, now seen corresponding path program 1 times [2024-10-15 00:54:08,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:08,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239883277] [2024-10-15 00:54:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:08,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:08,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:54:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:08,311 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:54:08,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:08,311 INFO L85 PathProgramCache]: Analyzing trace with hash -558681095, now seen corresponding path program 1 times [2024-10-15 00:54:08,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:08,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366521193] [2024-10-15 00:54:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:08,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:54:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:54:08,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:54:08,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366521193] [2024-10-15 00:54:08,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366521193] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:54:08,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:54:08,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:54:08,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913045537] [2024-10-15 00:54:08,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:54:08,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:54:08,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:54:08,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:54:08,497 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. cyclomatic complexity: 49 Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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) [2024-10-15 00:54:08,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:54:08,559 INFO L93 Difference]: Finished difference Result 365 states and 451 transitions. [2024-10-15 00:54:08,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 365 states and 451 transitions. [2024-10-15 00:54:08,561 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 260 [2024-10-15 00:54:08,562 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 365 states to 365 states and 451 transitions. [2024-10-15 00:54:08,562 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 365 [2024-10-15 00:54:08,563 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 365 [2024-10-15 00:54:08,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 365 states and 451 transitions. [2024-10-15 00:54:08,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-15 00:54:08,563 INFO L218 hiAutomatonCegarLoop]: Abstraction has 365 states and 451 transitions. [2024-10-15 00:54:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states and 451 transitions. [2024-10-15 00:54:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2024-10-15 00:54:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 365 states have (on average 1.2356164383561643) internal successors, (451), 364 states have internal predecessors, (451), 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) [2024-10-15 00:54:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 451 transitions. [2024-10-15 00:54:08,577 INFO L240 hiAutomatonCegarLoop]: Abstraction has 365 states and 451 transitions. [2024-10-15 00:54:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:54:08,578 INFO L425 stractBuchiCegarLoop]: Abstraction has 365 states and 451 transitions. [2024-10-15 00:54:08,578 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-15 00:54:08,578 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 365 states and 451 transitions. [2024-10-15 00:54:08,580 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 260 [2024-10-15 00:54:08,580 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:54:08,581 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:54:08,582 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:08,582 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:54:08,582 INFO L745 eck$LassoCheckResult]: Stem: 1892#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1893#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 1886#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1887#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 1963#valid_product_returnLabel#1 main_#t~ret29#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 1921#L548 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 1922#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1926#L281-2 [2024-10-15 00:54:08,583 INFO L747 eck$LassoCheckResult]: Loop: 1926#L281-2 assume !false; 1848#L282 assume test_~splverifierCounter~0#1 < 4; 1849#L283 havoc test_#t~nondet17#1;test_~tmp~3#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 1950#L291 assume !(0 != test_~tmp~3#1); 1952#L291-2 havoc test_#t~nondet18#1;test_~tmp___0~1#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 1961#L301 assume !(0 != test_~tmp___0~1#1); 1962#L301-2 havoc test_#t~nondet19#1;test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 2179#L311 assume 0 != test_~tmp___2~0#1; 2176#L317-2 assume { :begin_inline_timeShift } true; 2173#L105 assume !(0 != ~pumpRunning~0); 1992#L105-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;havoc processEnvironment_~tmp~0#1; 2171#L137 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret16#1, isHighWaterLevel_~retValue_acc~4#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~4#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~7#1;havoc isHighWaterSensorDry_~retValue_acc~7#1; 2115#L455 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~7#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~7#1; 2169#isHighWaterSensorDry_returnLabel#1 isHighWaterLevel_#t~ret16#1 := isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~7#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret16#1;havoc isHighWaterLevel_#t~ret16#1; 2166#L257 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 2164#L257-2 isHighWaterLevel_~retValue_acc~4#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~4#1; 2162#isHighWaterLevel_returnLabel#1 processEnvironment_#t~ret5#1 := isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret16#1, isHighWaterLevel_~retValue_acc~4#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~0#1 := processEnvironment_#t~ret5#1;havoc processEnvironment_#t~ret5#1; 2160#L141 assume !(0 != processEnvironment_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2159#processEnvironment__wrappee__base_returnLabel#1 assume { :end_inline_processEnvironment__wrappee__base } true; 1943#L137-1 havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;assume { :end_inline_processEnvironment } true; 1944#L112-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;isMethaneLevelCritical_~retValue_acc~5#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~5#1; 2158#isMethaneLevelCritical_returnLabel#2 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 1980#L347 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~4#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~6#1;havoc getWaterLevel_~retValue_acc~6#1;getWaterLevel_~retValue_acc~6#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~6#1; 1981#getWaterLevel_returnLabel#1 __utac_acc__Specification3_spec__1_#t~ret22#1 := getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~6#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~2#1 := __utac_acc__Specification3_spec__1_#t~ret22#1;havoc __utac_acc__Specification3_spec__1_#t~ret22#1; 1972#L353 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2#1); 1912#L353-1 havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1925#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 1926#L281-2 [2024-10-15 00:54:08,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:08,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 6 times [2024-10-15 00:54:08,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:08,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135768853] [2024-10-15 00:54:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:08,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:08,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:54:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:08,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:54:08,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:08,597 INFO L85 PathProgramCache]: Analyzing trace with hash -395715694, now seen corresponding path program 1 times [2024-10-15 00:54:08,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:08,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121062152] [2024-10-15 00:54:08,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:08,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:08,603 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:54:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:08,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:54:08,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:54:08,612 INFO L85 PathProgramCache]: Analyzing trace with hash -20427954, now seen corresponding path program 1 times [2024-10-15 00:54:08,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:54:08,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727478472] [2024-10-15 00:54:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:54:08,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:54:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:08,623 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:54:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:08,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:54:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:09,295 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:54:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:54:09,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.10 12:54:09 BoogieIcfgContainer [2024-10-15 00:54:09,331 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-15 00:54:09,331 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 00:54:09,331 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 00:54:09,331 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 00:54:09,332 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:54:07" (3/4) ... [2024-10-15 00:54:09,332 INFO L136 WitnessPrinter]: Generating witness for non-termination counterexample [2024-10-15 00:54:09,372 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-15 00:54:09,372 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 00:54:09,372 INFO L158 Benchmark]: Toolchain (without parser) took 3009.05ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 109.9MB in the beginning and 68.2MB in the end (delta: 41.6MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. [2024-10-15 00:54:09,372 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:54:09,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.74ms. Allocated memory is still 153.1MB. Free memory was 109.9MB in the beginning and 89.6MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-15 00:54:09,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.97ms. Allocated memory is still 153.1MB. Free memory was 89.6MB in the beginning and 86.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:54:09,373 INFO L158 Benchmark]: Boogie Preprocessor took 31.96ms. Allocated memory is still 153.1MB. Free memory was 86.8MB in the beginning and 84.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:54:09,373 INFO L158 Benchmark]: RCFGBuilder took 421.19ms. Allocated memory is still 153.1MB. Free memory was 84.0MB in the beginning and 108.1MB in the end (delta: -24.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-15 00:54:09,373 INFO L158 Benchmark]: BuchiAutomizer took 2131.06ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 108.1MB in the beginning and 71.4MB in the end (delta: 36.7MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. [2024-10-15 00:54:09,374 INFO L158 Benchmark]: Witness Printer took 40.52ms. Allocated memory is still 184.5MB. Free memory was 71.4MB in the beginning and 68.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-15 00:54:09,375 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.74ms. Allocated memory is still 153.1MB. Free memory was 109.9MB in the beginning and 89.6MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.97ms. Allocated memory is still 153.1MB. Free memory was 89.6MB in the beginning and 86.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.96ms. Allocated memory is still 153.1MB. Free memory was 86.8MB in the beginning and 84.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 421.19ms. Allocated memory is still 153.1MB. Free memory was 84.0MB in the beginning and 108.1MB in the end (delta: -24.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 2131.06ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 108.1MB in the beginning and 71.4MB in the end (delta: 36.7MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. * Witness Printer took 40.52ms. Allocated memory is still 184.5MB. Free memory was 71.4MB in the beginning and 68.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] - GenericResultAtLocation [Line: 87]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [87] - GenericResultAtLocation [Line: 267]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [267] - GenericResultAtLocation [Line: 335]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [335] - GenericResultAtLocation [Line: 371]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [371] - GenericResultAtLocation [Line: 465]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [465] - GenericResultAtLocation [Line: 561]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [561] - GenericResultAtLocation [Line: 927]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [927] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 365 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 382 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 382 mSDsluCounter, 2153 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1431 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 200 IncrementalHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 722 mSDtfsCounter, 200 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 281]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L97] int pumpRunning = 0; [L98] int systemActive = 1; [L372] int waterLevel = 1; [L373] int methaneLevelCritical = 0; [L466] int cleanupTimeShifts = 4; [L731] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L539] int retValue_acc ; [L540] int tmp ; [L544] FCALL select_helpers() [L545] FCALL select_features() [L546] CALL, EXPR valid_product() [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L546] RET, EXPR valid_product() [L546] tmp = valid_product() [L548] COND TRUE \read(tmp) [L550] FCALL setup() [L551] CALL runTest() [L533] CALL test() [L272] int splverifierCounter ; [L273] int tmp ; [L274] int tmp___0 ; [L275] int tmp___1 ; [L276] int tmp___2 ; [L279] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L281] COND TRUE 1 [L283] COND TRUE splverifierCounter < 4 [L289] tmp = __VERIFIER_nondet_int() [L291] COND FALSE !(\read(tmp)) [L299] tmp___0 = __VERIFIER_nondet_int() [L301] COND FALSE !(\read(tmp___0)) [L309] tmp___2 = __VERIFIER_nondet_int() [L311] COND TRUE \read(tmp___2) [L324] CALL timeShift() [L105] COND FALSE !(\read(pumpRunning)) [L112] COND TRUE \read(systemActive) [L114] CALL processEnvironment() [L134] int tmp ; [L137] COND TRUE ! pumpRunning [L139] CALL, EXPR isHighWaterLevel() [L249] int retValue_acc ; [L250] int tmp ; [L251] int tmp___0 ; [L255] CALL, EXPR isHighWaterSensorDry() [L452] int retValue_acc ; [L455] COND TRUE waterLevel < 2 [L456] retValue_acc = 1 [L457] return (retValue_acc); [L255] RET, EXPR isHighWaterSensorDry() [L255] tmp = isHighWaterSensorDry() [L257] COND TRUE \read(tmp) [L258] tmp___0 = 0 [L262] retValue_acc = tmp___0 [L263] return (retValue_acc); [L139] RET, EXPR isHighWaterLevel() [L139] tmp = isHighWaterLevel() [L141] COND FALSE !(\read(tmp)) [L147] FCALL processEnvironment__wrappee__base() [L114] RET processEnvironment() [L120] CALL __utac_acc__Specification3_spec__1() [L339] int tmp ; [L340] int tmp___0 ; [L341] int tmp___1 ; [L345] CALL, EXPR isMethaneLevelCritical() [L411] int retValue_acc ; [L414] retValue_acc = methaneLevelCritical [L415] return (retValue_acc); [L345] RET, EXPR isMethaneLevelCritical() [L345] tmp = isMethaneLevelCritical() [L347] COND FALSE !(\read(tmp)) [L351] CALL, EXPR getWaterLevel() [L443] int retValue_acc ; [L446] retValue_acc = waterLevel [L447] return (retValue_acc); [L351] RET, EXPR getWaterLevel() [L351] tmp___0 = getWaterLevel() [L353] COND FALSE !(tmp___0 == 2) [L120] RET __utac_acc__Specification3_spec__1() [L324] RET timeShift() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 281]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L97] int pumpRunning = 0; [L98] int systemActive = 1; [L372] int waterLevel = 1; [L373] int methaneLevelCritical = 0; [L466] int cleanupTimeShifts = 4; [L731] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L539] int retValue_acc ; [L540] int tmp ; [L544] FCALL select_helpers() [L545] FCALL select_features() [L546] CALL, EXPR valid_product() [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L546] RET, EXPR valid_product() [L546] tmp = valid_product() [L548] COND TRUE \read(tmp) [L550] FCALL setup() [L551] CALL runTest() [L533] CALL test() [L272] int splverifierCounter ; [L273] int tmp ; [L274] int tmp___0 ; [L275] int tmp___1 ; [L276] int tmp___2 ; [L279] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L281] COND TRUE 1 [L283] COND TRUE splverifierCounter < 4 [L289] tmp = __VERIFIER_nondet_int() [L291] COND FALSE !(\read(tmp)) [L299] tmp___0 = __VERIFIER_nondet_int() [L301] COND FALSE !(\read(tmp___0)) [L309] tmp___2 = __VERIFIER_nondet_int() [L311] COND TRUE \read(tmp___2) [L324] CALL timeShift() [L105] COND FALSE !(\read(pumpRunning)) [L112] COND TRUE \read(systemActive) [L114] CALL processEnvironment() [L134] int tmp ; [L137] COND TRUE ! pumpRunning [L139] CALL, EXPR isHighWaterLevel() [L249] int retValue_acc ; [L250] int tmp ; [L251] int tmp___0 ; [L255] CALL, EXPR isHighWaterSensorDry() [L452] int retValue_acc ; [L455] COND TRUE waterLevel < 2 [L456] retValue_acc = 1 [L457] return (retValue_acc); [L255] RET, EXPR isHighWaterSensorDry() [L255] tmp = isHighWaterSensorDry() [L257] COND TRUE \read(tmp) [L258] tmp___0 = 0 [L262] retValue_acc = tmp___0 [L263] return (retValue_acc); [L139] RET, EXPR isHighWaterLevel() [L139] tmp = isHighWaterLevel() [L141] COND FALSE !(\read(tmp)) [L147] FCALL processEnvironment__wrappee__base() [L114] RET processEnvironment() [L120] CALL __utac_acc__Specification3_spec__1() [L339] int tmp ; [L340] int tmp___0 ; [L341] int tmp___1 ; [L345] CALL, EXPR isMethaneLevelCritical() [L411] int retValue_acc ; [L414] retValue_acc = methaneLevelCritical [L415] return (retValue_acc); [L345] RET, EXPR isMethaneLevelCritical() [L345] tmp = isMethaneLevelCritical() [L347] COND FALSE !(\read(tmp)) [L351] CALL, EXPR getWaterLevel() [L443] int retValue_acc ; [L446] retValue_acc = waterLevel [L447] return (retValue_acc); [L351] RET, EXPR getWaterLevel() [L351] tmp___0 = getWaterLevel() [L353] COND FALSE !(tmp___0 == 2) [L120] RET __utac_acc__Specification3_spec__1() [L324] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-10-15 00:54:09,401 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)