./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 837951bb35a66379a80a07f15314d2b43ee3f47728002b8b604897c09f36abe4 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 19:11:16,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 19:11:16,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 19:11:16,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 19:11:16,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 19:11:16,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 19:11:16,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 19:11:16,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 19:11:16,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 19:11:16,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 19:11:16,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 19:11:16,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 19:11:16,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 19:11:16,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 19:11:16,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 19:11:16,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 19:11:16,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 19:11:16,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 19:11:16,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 19:11:16,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 19:11:16,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 19:11:16,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 19:11:16,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 19:11:16,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 19:11:16,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 19:11:16,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 19:11:16,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 19:11:16,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 19:11:16,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 19:11:16,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 19:11:16,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 19:11:16,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 19:11:16,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 19:11:16,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 19:11:16,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 19:11:16,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 19:11:16,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 19:11:16,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 19:11:16,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 19:11:16,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 19:11:16,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 19:11:16,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-19 19:11:16,567 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 19:11:16,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 19:11:16,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 19:11:16,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 19:11:16,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 19:11:16,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 19:11:16,575 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 19:11:16,575 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 19:11:16,575 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 19:11:16,576 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 19:11:16,576 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 19:11:16,576 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 19:11:16,576 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 19:11:16,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 19:11:16,576 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 19:11:16,577 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 19:11:16,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 19:11:16,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 19:11:16,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 19:11:16,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 19:11:16,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 19:11:16,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 19:11:16,578 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 19:11:16,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 19:11:16,578 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 19:11:16,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 19:11:16,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 19:11:16,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 19:11:16,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 19:11:16,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 19:11:16,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 19:11:16,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 19:11:16,579 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 19:11:16,580 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 837951bb35a66379a80a07f15314d2b43ee3f47728002b8b604897c09f36abe4 [2021-12-19 19:11:16,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 19:11:16,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 19:11:16,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 19:11:16,779 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 19:11:16,779 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 19:11:16,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c [2021-12-19 19:11:16,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50c95b40/0174fe12f5d94a26a0448b4c8451ae97/FLAG74d890f91 [2021-12-19 19:11:17,227 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 19:11:17,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c [2021-12-19 19:11:17,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50c95b40/0174fe12f5d94a26a0448b4c8451ae97/FLAG74d890f91 [2021-12-19 19:11:17,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50c95b40/0174fe12f5d94a26a0448b4c8451ae97 [2021-12-19 19:11:17,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 19:11:17,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 19:11:17,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 19:11:17,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 19:11:17,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 19:11:17,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:11:17" (1/1) ... [2021-12-19 19:11:17,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7903588c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17, skipping insertion in model container [2021-12-19 19:11:17,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:11:17" (1/1) ... [2021-12-19 19:11:17,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 19:11:17,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 19:11:17,491 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c[18588,18601] [2021-12-19 19:11:17,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 19:11:17,498 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 19:11:17,554 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c[18588,18601] [2021-12-19 19:11:17,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 19:11:17,566 INFO L208 MainTranslator]: Completed translation [2021-12-19 19:11:17,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17 WrapperNode [2021-12-19 19:11:17,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 19:11:17,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 19:11:17,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 19:11:17,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 19:11:17,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17" (1/1) ... [2021-12-19 19:11:17,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17" (1/1) ... [2021-12-19 19:11:17,606 INFO L137 Inliner]: procedures = 55, calls = 155, calls flagged for inlining = 52, calls inlined = 80, statements flattened = 632 [2021-12-19 19:11:17,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 19:11:17,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 19:11:17,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 19:11:17,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 19:11:17,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17" (1/1) ... [2021-12-19 19:11:17,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17" (1/1) ... [2021-12-19 19:11:17,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17" (1/1) ... [2021-12-19 19:11:17,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17" (1/1) ... [2021-12-19 19:11:17,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17" (1/1) ... [2021-12-19 19:11:17,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17" (1/1) ... [2021-12-19 19:11:17,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17" (1/1) ... [2021-12-19 19:11:17,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 19:11:17,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 19:11:17,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 19:11:17,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 19:11:17,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17" (1/1) ... [2021-12-19 19:11:17,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:11:17,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:11:17,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 19:11:17,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-19 19:11:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 19:11:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 19:11:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 19:11:17,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 19:11:17,753 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 19:11:17,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 19:11:18,044 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 19:11:18,052 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 19:11:18,052 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-19 19:11:18,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:11:18 BoogieIcfgContainer [2021-12-19 19:11:18,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 19:11:18,055 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 19:11:18,055 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 19:11:18,057 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 19:11:18,057 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:11:18,057 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 07:11:17" (1/3) ... [2021-12-19 19:11:18,058 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e0a6b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 07:11:18, skipping insertion in model container [2021-12-19 19:11:18,058 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:11:18,058 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:11:17" (2/3) ... [2021-12-19 19:11:18,059 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e0a6b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 07:11:18, skipping insertion in model container [2021-12-19 19:11:18,059 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:11:18,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:11:18" (3/3) ... [2021-12-19 19:11:18,060 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product49.cil.c [2021-12-19 19:11:18,085 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 19:11:18,085 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 19:11:18,085 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 19:11:18,085 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 19:11:18,086 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 19:11:18,086 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 19:11:18,086 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 19:11:18,086 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 19:11:18,097 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 168 states, 167 states have (on average 1.3832335329341316) internal successors, (231), 167 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:11:18,126 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 108 [2021-12-19 19:11:18,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:11:18,126 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:11:18,131 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:11:18,131 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:11:18,131 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 19:11:18,132 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 168 states, 167 states have (on average 1.3832335329341316) internal successors, (231), 167 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:11:18,138 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 108 [2021-12-19 19:11:18,138 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:11:18,138 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:11:18,139 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:11:18,139 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:11:18,142 INFO L791 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 47#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~9#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 20#L490true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 137#L483true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 114#L498true main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 42#L951true assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 82#L928true 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~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 105#L271-2true [2021-12-19 19:11:18,142 INFO L793 eck$LassoCheckResult]: Loop: 105#L271-2true assume !false; 55#L272true assume test_~splverifierCounter~0#1 < 4; 77#L273true test_~tmp~4#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 14#L281true assume !(0 != test_~tmp~4#1); 98#L281-2true test_~tmp___0~2#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 101#L291true assume !(0 != test_~tmp___0~2#1); 99#L291-2true test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 118#L301true assume 0 != test_~tmp___2~0#1; 16#L307-2true assume { :begin_inline_timeShift } true; 163#L68true assume !(0 != ~pumpRunning~0); 91#L68-2true assume !(0 != ~systemActive~0); 37#L75-1true 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~5#1, __utac_acc__Specification3_spec__1_~tmp___0~3#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~5#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 107#L405true __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~5#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 94#L337true assume 0 != __utac_acc__Specification3_spec__1_~tmp~5#1; 57#L343-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 43#L85true assume { :end_inline_timeShift } true; 105#L271-2true [2021-12-19 19:11:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:11:18,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-12-19 19:11:18,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:11:18,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882503300] [2021-12-19 19:11:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:11:18,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:11:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:18,242 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:11:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:18,307 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:11:18,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:11:18,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1182775606, now seen corresponding path program 1 times [2021-12-19 19:11:18,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:11:18,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620950732] [2021-12-19 19:11:18,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:11:18,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:11:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:18,331 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:11:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:18,337 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:11:18,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:11:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1756772614, now seen corresponding path program 1 times [2021-12-19 19:11:18,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:11:18,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111137671] [2021-12-19 19:11:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:11:18,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:11:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:11:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:11:18,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:11:18,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111137671] [2021-12-19 19:11:18,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111137671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:11:18,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:11:18,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:11:18,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665758716] [2021-12-19 19:11:18,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:11:18,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:11:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 19:11:18,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-19 19:11:18,586 INFO L87 Difference]: Start difference. First operand has 168 states, 167 states have (on average 1.3832335329341316) internal successors, (231), 167 states have internal predecessors, (231), 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) [2021-12-19 19:11:18,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:11:18,644 INFO L93 Difference]: Finished difference Result 165 states and 217 transitions. [2021-12-19 19:11:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 19:11:18,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 165 states and 217 transitions. [2021-12-19 19:11:18,662 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 104 [2021-12-19 19:11:18,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 165 states to 155 states and 207 transitions. [2021-12-19 19:11:18,670 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2021-12-19 19:11:18,671 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 155 [2021-12-19 19:11:18,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 155 states and 207 transitions. [2021-12-19 19:11:18,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:11:18,673 INFO L681 BuchiCegarLoop]: Abstraction has 155 states and 207 transitions. [2021-12-19 19:11:18,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states and 207 transitions. [2021-12-19 19:11:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-19 19:11:18,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 155 states have (on average 1.335483870967742) internal successors, (207), 154 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:11:18,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 207 transitions. [2021-12-19 19:11:18,708 INFO L704 BuchiCegarLoop]: Abstraction has 155 states and 207 transitions. [2021-12-19 19:11:18,708 INFO L587 BuchiCegarLoop]: Abstraction has 155 states and 207 transitions. [2021-12-19 19:11:18,708 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 19:11:18,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 155 states and 207 transitions. [2021-12-19 19:11:18,709 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 104 [2021-12-19 19:11:18,709 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:11:18,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:11:18,710 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:11:18,710 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:11:18,710 INFO L791 eck$LassoCheckResult]: Stem: 504#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 423#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~9#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 383#L490 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 384#L483 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 490#L498 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 413#L951 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 414#L928 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~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 416#L271-2 [2021-12-19 19:11:18,711 INFO L793 eck$LassoCheckResult]: Loop: 416#L271-2 assume !false; 434#L272 assume test_~splverifierCounter~0#1 < 4; 435#L273 test_~tmp~4#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 371#L281 assume !(0 != test_~tmp~4#1); 373#L281-2 test_~tmp___0~2#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 478#L291 assume !(0 != test_~tmp___0~2#1); 375#L291-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 479#L301 assume 0 != test_~tmp___2~0#1; 376#L307-2 assume { :begin_inline_timeShift } true; 377#L68 assume !(0 != ~pumpRunning~0); 471#L68-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 466#L126 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 467#L100-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 427#L92-3 assume { :end_inline_processEnvironment__wrappee__base } true; 428#L100-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 443#L126-1 assume { :end_inline_processEnvironment } true; 405#L75-1 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~5#1, __utac_acc__Specification3_spec__1_~tmp___0~3#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~5#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 406#L405 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~5#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 474#L337 assume 0 != __utac_acc__Specification3_spec__1_~tmp~5#1; 437#L343-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 415#L85 assume { :end_inline_timeShift } true; 416#L271-2 [2021-12-19 19:11:18,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:11:18,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-12-19 19:11:18,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:11:18,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564829783] [2021-12-19 19:11:18,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:11:18,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:11:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:18,720 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:11:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:18,739 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:11:18,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:11:18,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1675901973, now seen corresponding path program 1 times [2021-12-19 19:11:18,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:11:18,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785891399] [2021-12-19 19:11:18,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:11:18,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:11:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:11:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:11:18,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:11:18,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785891399] [2021-12-19 19:11:18,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785891399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:11:18,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:11:18,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:11:18,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872435336] [2021-12-19 19:11:18,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:11:18,773 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:11:18,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:11:18,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:11:18,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:11:18,774 INFO L87 Difference]: Start difference. First operand 155 states and 207 transitions. cyclomatic complexity: 54 Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:11:18,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:11:18,840 INFO L93 Difference]: Finished difference Result 216 states and 278 transitions. [2021-12-19 19:11:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:11:18,841 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 216 states and 278 transitions. [2021-12-19 19:11:18,844 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 150 [2021-12-19 19:11:18,849 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 216 states to 216 states and 278 transitions. [2021-12-19 19:11:18,849 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 216 [2021-12-19 19:11:18,850 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 216 [2021-12-19 19:11:18,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 216 states and 278 transitions. [2021-12-19 19:11:18,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:11:18,855 INFO L681 BuchiCegarLoop]: Abstraction has 216 states and 278 transitions. [2021-12-19 19:11:18,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states and 278 transitions. [2021-12-19 19:11:18,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-12-19 19:11:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 216 states have (on average 1.287037037037037) internal successors, (278), 215 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:11:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 278 transitions. [2021-12-19 19:11:18,865 INFO L704 BuchiCegarLoop]: Abstraction has 216 states and 278 transitions. [2021-12-19 19:11:18,865 INFO L587 BuchiCegarLoop]: Abstraction has 216 states and 278 transitions. [2021-12-19 19:11:18,865 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 19:11:18,865 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 216 states and 278 transitions. [2021-12-19 19:11:18,866 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 150 [2021-12-19 19:11:18,866 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:11:18,866 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:11:18,867 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:11:18,867 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:11:18,867 INFO L791 eck$LassoCheckResult]: Stem: 889#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 798#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~9#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 757#L490 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 758#L483 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 868#L498 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 789#L951 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 790#L928 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~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 840#L271-2 [2021-12-19 19:11:18,868 INFO L793 eck$LassoCheckResult]: Loop: 840#L271-2 assume !false; 907#L272 assume test_~splverifierCounter~0#1 < 4; 906#L273 test_~tmp~4#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 904#L281 assume !(0 != test_~tmp~4#1); 902#L281-2 test_~tmp___0~2#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 900#L291 assume !(0 != test_~tmp___0~2#1); 898#L291-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 897#L301 assume 0 != test_~tmp___2~0#1; 895#L307-2 assume { :begin_inline_timeShift } true; 891#L68 assume !(0 != ~pumpRunning~0); 847#L68-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 842#L126 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 843#L100-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret15#1, isHighWaterLevel_~retValue_acc~2#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~2#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~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 803#L445-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 804#L450-1 isHighWaterLevel_#t~ret15#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret15#1;havoc isHighWaterLevel_#t~ret15#1; 811#L228-3 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 878#L228-5 isHighWaterLevel_~retValue_acc~2#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~2#1; 890#L234-1 processEnvironment__wrappee__highWaterSensor_#t~ret4#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret4#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1; 834#L104-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 836#L92-2 assume { :end_inline_processEnvironment__wrappee__base } true; 837#L100-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 871#L126-1 assume { :end_inline_processEnvironment } true; 916#L75-1 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~5#1, __utac_acc__Specification3_spec__1_~tmp___0~3#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~5#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 915#L405 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~5#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 911#L337 assume 0 != __utac_acc__Specification3_spec__1_~tmp~5#1; 909#L343-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 908#L85 assume { :end_inline_timeShift } true; 840#L271-2 [2021-12-19 19:11:18,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:11:18,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2021-12-19 19:11:18,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:11:18,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39886260] [2021-12-19 19:11:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:11:18,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:11:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:18,881 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:11:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:18,888 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:11:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:11:18,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2016867469, now seen corresponding path program 1 times [2021-12-19 19:11:18,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:11:18,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659820858] [2021-12-19 19:11:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:11:18,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:11:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:18,896 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:11:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:18,899 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:11:18,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:11:18,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1902812087, now seen corresponding path program 1 times [2021-12-19 19:11:18,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:11:18,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675832069] [2021-12-19 19:11:18,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:11:18,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:11:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:11:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:11:18,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:11:18,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675832069] [2021-12-19 19:11:18,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675832069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:11:18,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:11:18,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 19:11:18,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051096561] [2021-12-19 19:11:18,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:11:19,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:11:19,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 19:11:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 19:11:19,100 INFO L87 Difference]: Start difference. First operand 216 states and 278 transitions. cyclomatic complexity: 64 Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:11:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:11:19,172 INFO L93 Difference]: Finished difference Result 777 states and 998 transitions. [2021-12-19 19:11:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-19 19:11:19,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 777 states and 998 transitions. [2021-12-19 19:11:19,178 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 577 [2021-12-19 19:11:19,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 777 states to 777 states and 998 transitions. [2021-12-19 19:11:19,181 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 777 [2021-12-19 19:11:19,182 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 777 [2021-12-19 19:11:19,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 777 states and 998 transitions. [2021-12-19 19:11:19,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:11:19,184 INFO L681 BuchiCegarLoop]: Abstraction has 777 states and 998 transitions. [2021-12-19 19:11:19,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states and 998 transitions. [2021-12-19 19:11:19,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 425. [2021-12-19 19:11:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 425 states have (on average 1.2729411764705882) internal successors, (541), 424 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:11:19,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 541 transitions. [2021-12-19 19:11:19,210 INFO L704 BuchiCegarLoop]: Abstraction has 425 states and 541 transitions. [2021-12-19 19:11:19,210 INFO L587 BuchiCegarLoop]: Abstraction has 425 states and 541 transitions. [2021-12-19 19:11:19,210 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 19:11:19,211 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 425 states and 541 transitions. [2021-12-19 19:11:19,212 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 300 [2021-12-19 19:11:19,212 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:11:19,212 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:11:19,214 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:11:19,214 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:11:19,214 INFO L791 eck$LassoCheckResult]: Stem: 1927#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1812#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~9#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 1769#L490 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1770#L483 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 1891#L498 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 1803#L951 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 1804#L928 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~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1806#L271-2 [2021-12-19 19:11:19,214 INFO L793 eck$LassoCheckResult]: Loop: 1806#L271-2 assume !false; 1822#L272 assume test_~splverifierCounter~0#1 < 4; 1823#L273 test_~tmp~4#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 1758#L281 assume !(0 != test_~tmp~4#1); 1760#L281-2 test_~tmp___0~2#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 1877#L291 assume !(0 != test_~tmp___0~2#1); 1762#L291-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 1878#L301 assume 0 != test_~tmp___2~0#1; 2130#L307-2 assume { :begin_inline_timeShift } true; 2128#L68 assume !(0 != ~pumpRunning~0); 2126#L68-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 1861#L126 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 1862#L100-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret15#1, isHighWaterLevel_~retValue_acc~2#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~2#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~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 1817#L445-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 1818#L450-1 isHighWaterLevel_#t~ret15#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret15#1;havoc isHighWaterLevel_#t~ret15#1; 1909#L228-3 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 1910#L228-5 isHighWaterLevel_~retValue_acc~2#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~2#1; 1930#L234-1 processEnvironment__wrappee__highWaterSensor_#t~ret4#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret4#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1; 1853#L104-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1855#L92-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1856#L100-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2108#L126-1 assume { :end_inline_processEnvironment } true; 1968#L75-1 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~5#1, __utac_acc__Specification3_spec__1_~tmp___0~3#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~5#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 1969#L405 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~5#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 1965#L337 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~5#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 1963#L437 __utac_acc__Specification3_spec__1_#t~ret22#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~3#1 := __utac_acc__Specification3_spec__1_#t~ret22#1;havoc __utac_acc__Specification3_spec__1_#t~ret22#1; 1964#L343 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3#1); 2149#L343-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1805#L85 assume { :end_inline_timeShift } true; 1806#L271-2 [2021-12-19 19:11:19,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:11:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2021-12-19 19:11:19,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:11:19,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501711198] [2021-12-19 19:11:19,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:11:19,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:11:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:19,226 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:11:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:19,235 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:11:19,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:11:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1180640704, now seen corresponding path program 1 times [2021-12-19 19:11:19,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:11:19,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263559929] [2021-12-19 19:11:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:11:19,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:11:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:19,239 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:11:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:19,242 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:11:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:11:19,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1054905980, now seen corresponding path program 1 times [2021-12-19 19:11:19,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:11:19,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079199434] [2021-12-19 19:11:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:11:19,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:11:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:19,252 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:11:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:11:19,271 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:11:21,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 07:11:21 BoogieIcfgContainer [2021-12-19 19:11:21,542 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 19:11:21,542 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 19:11:21,542 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 19:11:21,542 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 19:11:21,543 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:11:18" (3/4) ... [2021-12-19 19:11:21,544 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 19:11:21,580 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 19:11:21,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 19:11:21,581 INFO L158 Benchmark]: Toolchain (without parser) took 4319.70ms. Allocated memory was 100.7MB in the beginning and 151.0MB in the end (delta: 50.3MB). Free memory was 68.2MB in the beginning and 76.5MB in the end (delta: -8.3MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2021-12-19 19:11:21,582 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 79.7MB. Free memory was 51.1MB in the beginning and 51.1MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 19:11:21,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.85ms. Allocated memory is still 100.7MB. Free memory was 68.2MB in the beginning and 70.3MB in the end (delta: -2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 19:11:21,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.32ms. Allocated memory is still 100.7MB. Free memory was 70.3MB in the beginning and 67.0MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:11:21,582 INFO L158 Benchmark]: Boogie Preprocessor took 35.42ms. Allocated memory is still 100.7MB. Free memory was 67.0MB in the beginning and 64.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-19 19:11:21,583 INFO L158 Benchmark]: RCFGBuilder took 410.85ms. Allocated memory is still 100.7MB. Free memory was 64.5MB in the beginning and 42.8MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-19 19:11:21,583 INFO L158 Benchmark]: BuchiAutomizer took 3487.17ms. Allocated memory was 100.7MB in the beginning and 151.0MB in the end (delta: 50.3MB). Free memory was 42.4MB in the beginning and 79.5MB in the end (delta: -37.2MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2021-12-19 19:11:21,583 INFO L158 Benchmark]: Witness Printer took 38.70ms. Allocated memory is still 151.0MB. Free memory was 79.5MB in the beginning and 76.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:11:21,585 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 79.7MB. Free memory was 51.1MB in the beginning and 51.1MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.85ms. Allocated memory is still 100.7MB. Free memory was 68.2MB in the beginning and 70.3MB in the end (delta: -2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.32ms. Allocated memory is still 100.7MB. Free memory was 70.3MB in the beginning and 67.0MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.42ms. Allocated memory is still 100.7MB. Free memory was 67.0MB in the beginning and 64.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 410.85ms. Allocated memory is still 100.7MB. Free memory was 64.5MB in the beginning and 42.8MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * BuchiAutomizer took 3487.17ms. Allocated memory was 100.7MB in the beginning and 151.0MB in the end (delta: 50.3MB). Free memory was 42.4MB in the beginning and 79.5MB in the end (delta: -37.2MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. * Witness Printer took 38.70ms. Allocated memory is still 151.0MB. Free memory was 79.5MB in the beginning and 76.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 425 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 352 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 425 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1779 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1779 mSDsluCounter, 1897 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1156 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 741 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 271]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5da380b1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@305a8d5=0, tmp___0=0, NULL=0, head=0, pumpRunning=0, tmp___0=0, retValue_acc=0, NULL=1, methaneLevelCritical=0, retValue_acc=1, tmp=1, retValue_acc=1, \result=0, retValue_acc=0, tmp=0, \result=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13a2b178=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ee5beb8=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39b22606=0, tmp___0=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e3c7070=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7504db20=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71d04c7a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@241c15db=0, tmp___2=29, tmp___1=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f500c97=0, cleanupTimeShifts=4, \result=0, tmp=0, head=0, \result=1, tmp___1=0, retValue_acc=1, NULL=0, waterLevel=1, systemActive=1, tmp=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@422c0ca7=0, tmp=0, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 271]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L362] int waterLevel = 1; [L363] int methaneLevelCritical = 0; [L672] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L869] int cleanupTimeShifts = 4; [L942] int retValue_acc ; [L943] int tmp ; [L947] FCALL select_helpers() [L948] FCALL select_features() [L949] CALL, EXPR valid_product() [L494] int retValue_acc ; [L497] retValue_acc = 1 [L498] return (retValue_acc); [L949] RET, EXPR valid_product() [L949] tmp = valid_product() [L951] COND TRUE \read(tmp) [L953] FCALL setup() [L954] CALL runTest() [L936] CALL test() [L262] int splverifierCounter ; [L263] int tmp ; [L264] int tmp___0 ; [L265] int tmp___1 ; [L266] int tmp___2 ; [L269] splverifierCounter = 0 Loop: [L271] COND TRUE 1 [L273] COND TRUE splverifierCounter < 4 [L279] tmp = __VERIFIER_nondet_int() [L281] COND FALSE !(\read(tmp)) [L289] tmp___0 = __VERIFIER_nondet_int() [L291] COND FALSE !(\read(tmp___0)) [L299] tmp___2 = __VERIFIER_nondet_int() [L301] COND TRUE \read(tmp___2) [L314] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND TRUE \read(systemActive) [L77] CALL processEnvironment() [L123] int tmp ; [L126] COND FALSE !(\read(pumpRunning)) [L141] CALL processEnvironment__wrappee__highWaterSensor() [L97] int tmp ; [L100] COND TRUE ! pumpRunning [L102] CALL, EXPR isHighWaterLevel() [L220] int retValue_acc ; [L221] int tmp ; [L222] int tmp___0 ; [L226] CALL, EXPR isHighWaterSensorDry() [L442] int retValue_acc ; [L445] COND TRUE waterLevel < 2 [L446] retValue_acc = 1 [L447] return (retValue_acc); [L226] RET, EXPR isHighWaterSensorDry() [L226] tmp = isHighWaterSensorDry() [L228] COND TRUE \read(tmp) [L229] tmp___0 = 0 [L233] retValue_acc = tmp___0 [L234] return (retValue_acc); [L102] RET, EXPR isHighWaterLevel() [L102] tmp = isHighWaterLevel() [L104] COND FALSE !(\read(tmp)) [L110] FCALL processEnvironment__wrappee__base() [L141] RET processEnvironment__wrappee__highWaterSensor() [L77] RET processEnvironment() [L83] CALL __utac_acc__Specification3_spec__1() [L329] int tmp ; [L330] int tmp___0 ; [L331] int tmp___1 ; [L335] CALL, EXPR isMethaneLevelCritical() [L401] int retValue_acc ; [L404] retValue_acc = methaneLevelCritical [L405] return (retValue_acc); [L335] RET, EXPR isMethaneLevelCritical() [L335] tmp = isMethaneLevelCritical() [L337] COND FALSE !(\read(tmp)) [L341] CALL, EXPR getWaterLevel() [L433] int retValue_acc ; [L436] retValue_acc = waterLevel [L437] return (retValue_acc); [L341] RET, EXPR getWaterLevel() [L341] tmp___0 = getWaterLevel() [L343] COND FALSE !(tmp___0 == 2) [L83] RET __utac_acc__Specification3_spec__1() [L314] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-19 19:11:21,637 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)