./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product30.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 fc6847a9bb87d87a67fe11aa1fd5a326e268e6b2 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:23:31,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:23:31,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:23:31,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:23:31,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:23:31,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:23:31,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:23:31,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:23:31,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:23:31,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:23:31,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:23:31,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:23:31,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:23:31,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:23:31,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:23:31,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:23:31,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:23:31,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:23:31,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:23:31,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:23:31,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:23:31,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:23:31,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:23:31,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:23:31,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:23:31,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:23:31,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:23:31,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:23:31,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:23:31,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:23:31,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:23:31,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:23:31,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:23:31,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:23:31,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:23:31,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:23:31,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:23:31,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:23:31,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:23:31,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:23:31,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:23:31,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:23:31,660 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:23:31,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:23:31,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:23:31,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:23:31,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:23:31,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:23:31,664 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:23:31,664 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:23:31,664 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:23:31,664 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:23:31,665 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:23:31,666 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:23:31,666 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:23:31,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:23:31,666 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:23:31,666 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:23:31,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:23:31,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:23:31,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:23:31,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:23:31,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:23:31,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:23:31,667 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:23:31,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:23:31,668 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:23:31,668 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:23:31,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:23:31,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:23:31,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:23:31,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:23:31,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:23:31,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:23:31,670 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:23:31,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc6847a9bb87d87a67fe11aa1fd5a326e268e6b2 [2021-08-27 16:23:31,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:23:31,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:23:31,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:23:31,985 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:23:31,985 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:23:31,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product30.cil.c [2021-08-27 16:23:32,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/955814c87/33efa495800a4919bb89000d836cd93a/FLAGedd96d627 [2021-08-27 16:23:32,536 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:23:32,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product30.cil.c [2021-08-27 16:23:32,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/955814c87/33efa495800a4919bb89000d836cd93a/FLAGedd96d627 [2021-08-27 16:23:32,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/955814c87/33efa495800a4919bb89000d836cd93a [2021-08-27 16:23:32,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:23:32,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:23:32,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:23:32,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:23:32,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:23:32,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:23:32" (1/1) ... [2021-08-27 16:23:32,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a0cced8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:32, skipping insertion in model container [2021-08-27 16:23:32,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:23:32" (1/1) ... [2021-08-27 16:23:32,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:23:32,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:23:33,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product30.cil.c[16083,16096] [2021-08-27 16:23:33,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:23:33,209 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:23:33,287 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product30.cil.c[16083,16096] [2021-08-27 16:23:33,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:23:33,324 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:23:33,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:33 WrapperNode [2021-08-27 16:23:33,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:23:33,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:23:33,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:23:33,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:23:33,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:33" (1/1) ... [2021-08-27 16:23:33,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:33" (1/1) ... [2021-08-27 16:23:33,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:23:33,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:23:33,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:23:33,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:23:33,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:33" (1/1) ... [2021-08-27 16:23:33,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:33" (1/1) ... [2021-08-27 16:23:33,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:33" (1/1) ... [2021-08-27 16:23:33,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:33" (1/1) ... [2021-08-27 16:23:33,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:33" (1/1) ... [2021-08-27 16:23:33,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:33" (1/1) ... [2021-08-27 16:23:33,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:33" (1/1) ... [2021-08-27 16:23:33,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:23:33,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:23:33,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:23:33,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:23:33,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:33" (1/1) ... [2021-08-27 16:23:33,446 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:23:33,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:23:33,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:23:33,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:23:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:23:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:23:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:23:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:23:34,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:23:34,400 INFO L299 CfgBuilder]: Removed 172 assume(true) statements. [2021-08-27 16:23:34,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:23:34 BoogieIcfgContainer [2021-08-27 16:23:34,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:23:34,403 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:23:34,403 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:23:34,406 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:23:34,407 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:23:34,407 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:23:32" (1/3) ... [2021-08-27 16:23:34,408 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2327799a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:23:34, skipping insertion in model container [2021-08-27 16:23:34,408 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:23:34,408 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:23:33" (2/3) ... [2021-08-27 16:23:34,409 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2327799a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:23:34, skipping insertion in model container [2021-08-27 16:23:34,409 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:23:34,409 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:23:34" (3/3) ... [2021-08-27 16:23:34,410 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product30.cil.c [2021-08-27 16:23:34,454 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:23:34,454 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:23:34,454 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:23:34,454 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:23:34,454 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:23:34,454 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:23:34,454 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:23:34,454 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:23:34,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 111 states, 110 states have (on average 1.5) internal successors, (165), 110 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:23:34,485 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-08-27 16:23:34,486 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:23:34,486 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:23:34,492 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:23:34,492 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:23:34,492 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:23:34,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 111 states, 110 states have (on average 1.5) internal successors, (165), 110 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:23:34,506 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-08-27 16:23:34,506 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:23:34,506 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:23:34,507 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:23:34,507 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:23:34,512 INFO L791 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 31#L-1true havoc main_#res;havoc main_#t~ret71, main_~retValue_acc~8, main_~tmp~9;havoc main_~retValue_acc~8;havoc main_~tmp~9; 30#L406true havoc valid_product_#res;havoc valid_product_~retValue_acc~4;havoc valid_product_~retValue_acc~4;valid_product_~retValue_acc~4 := 1;valid_product_#res := valid_product_~retValue_acc~4; 101#L414true main_#t~ret71 := valid_product_#res;main_~tmp~9 := main_#t~ret71;havoc main_#t~ret71; 16#L877true assume 0 != main_~tmp~9; 32#L853true ~switchedOnBeforeTS~0 := 0; 41#L338true havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 66#L359-1true [2021-08-27 16:23:34,512 INFO L793 eck$LassoCheckResult]: Loop: 66#L359-1true assume !false; 67#L274true assume test_~splverifierCounter~0 < 4; 90#L275true test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 77#L283true assume !(0 != test_~tmp~4); 55#L283-1true test_~tmp___0~1 := test_#t~nondet29;havoc test_#t~nondet29; 98#L293true assume !(0 != test_~tmp___0~1); 84#L293-1true test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 103#L303true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 79#L311-2true havoc __utac_acc__Specification5_spec__2_#t~ret32;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 75#L192true __utac_acc__Specification5_spec__2_#t~ret32 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret32;havoc __utac_acc__Specification5_spec__2_#t~ret32; 95#L348true assume !(0 != ~pumpRunning~0); 19#L64true assume !(0 != ~systemActive~0); 57#L71true havoc __utac_acc__Specification5_spec__3_#t~ret33, __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 7#L966true __utac_acc__Specification5_spec__3_#t~ret33 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret33;havoc __utac_acc__Specification5_spec__3_#t~ret33; 71#L359true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~5); 66#L359-1true [2021-08-27 16:23:34,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:23:34,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:23:34,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:23:34,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806441418] [2021-08-27 16:23:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:23:34,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:23:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:23:34,736 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:23:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:23:34,895 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:23:34,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:23:34,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1012669325, now seen corresponding path program 1 times [2021-08-27 16:23:34,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:23:34,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849140908] [2021-08-27 16:23:34,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:23:34,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:23:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:23:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:23:34,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:23:34,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849140908] [2021-08-27 16:23:34,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849140908] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:23:34,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:23:34,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:23:34,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554506366] [2021-08-27 16:23:34,968 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:23:34,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:23:34,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:23:34,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:23:34,985 INFO L87 Difference]: Start difference. First operand has 111 states, 110 states have (on average 1.5) internal successors, (165), 110 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:23:35,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:23:35,040 INFO L93 Difference]: Finished difference Result 111 states and 155 transitions. [2021-08-27 16:23:35,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:23:35,049 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 155 transitions. [2021-08-27 16:23:35,052 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-08-27 16:23:35,058 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 104 states and 147 transitions. [2021-08-27 16:23:35,059 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-08-27 16:23:35,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2021-08-27 16:23:35,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 147 transitions. [2021-08-27 16:23:35,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:23:35,063 INFO L681 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2021-08-27 16:23:35,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 147 transitions. [2021-08-27 16:23:35,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-08-27 16:23:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 104 states have (on average 1.4134615384615385) internal successors, (147), 103 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:23:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2021-08-27 16:23:35,092 INFO L704 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2021-08-27 16:23:35,093 INFO L587 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2021-08-27 16:23:35,093 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:23:35,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 147 transitions. [2021-08-27 16:23:35,095 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-08-27 16:23:35,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:23:35,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:23:35,096 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:23:35,096 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:23:35,097 INFO L791 eck$LassoCheckResult]: Stem: 332#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 278#L-1 havoc main_#res;havoc main_#t~ret71, main_~retValue_acc~8, main_~tmp~9;havoc main_~retValue_acc~8;havoc main_~tmp~9; 276#L406 havoc valid_product_#res;havoc valid_product_~retValue_acc~4;havoc valid_product_~retValue_acc~4;valid_product_~retValue_acc~4 := 1;valid_product_#res := valid_product_~retValue_acc~4; 277#L414 main_#t~ret71 := valid_product_#res;main_~tmp~9 := main_#t~ret71;havoc main_#t~ret71; 254#L877 assume 0 != main_~tmp~9; 255#L853 ~switchedOnBeforeTS~0 := 0; 279#L338 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 291#L359-1 [2021-08-27 16:23:35,097 INFO L793 eck$LassoCheckResult]: Loop: 291#L359-1 assume !false; 314#L274 assume test_~splverifierCounter~0 < 4; 315#L275 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 321#L283 assume !(0 != test_~tmp~4); 294#L283-1 test_~tmp___0~1 := test_#t~nondet29;havoc test_#t~nondet29; 304#L293 assume !(0 != test_~tmp___0~1); 326#L293-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 327#L303 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 287#L311-2 havoc __utac_acc__Specification5_spec__2_#t~ret32;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 319#L192 __utac_acc__Specification5_spec__2_#t~ret32 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret32;havoc __utac_acc__Specification5_spec__2_#t~ret32; 320#L348 assume !(0 != ~pumpRunning~0); 246#L64 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 257#L122 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret7, processEnvironment__wrappee__methaneQuery_~tmp~0;havoc processEnvironment__wrappee__methaneQuery_~tmp~0; 288#L96-1 assume !(0 != ~pumpRunning~0); 297#L71 havoc __utac_acc__Specification5_spec__3_#t~ret33, __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 237#L966 __utac_acc__Specification5_spec__3_#t~ret33 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret33;havoc __utac_acc__Specification5_spec__3_#t~ret33; 238#L359 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~5); 291#L359-1 [2021-08-27 16:23:35,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:23:35,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:23:35,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:23:35,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456435609] [2021-08-27 16:23:35,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:23:35,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:23:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:23:35,156 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:23:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:23:35,227 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:23:35,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:23:35,229 INFO L82 PathProgramCache]: Analyzing trace with hash 363233727, now seen corresponding path program 1 times [2021-08-27 16:23:35,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:23:35,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215824444] [2021-08-27 16:23:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:23:35,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:23:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:23:35,235 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:23:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:23:35,244 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:23:35,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:23:35,247 INFO L82 PathProgramCache]: Analyzing trace with hash -759378631, now seen corresponding path program 1 times [2021-08-27 16:23:35,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:23:35,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984996277] [2021-08-27 16:23:35,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:23:35,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:23:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:23:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:23:35,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:23:35,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984996277] [2021-08-27 16:23:35,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984996277] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:23:35,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:23:35,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:23:35,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268059456] [2021-08-27 16:23:35,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:23:35,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:23:35,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:23:35,573 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. cyclomatic complexity: 45 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:23:35,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:23:35,755 INFO L93 Difference]: Finished difference Result 320 states and 453 transitions. [2021-08-27 16:23:35,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:23:35,756 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 320 states and 453 transitions. [2021-08-27 16:23:35,759 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 135 [2021-08-27 16:23:35,762 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 320 states to 320 states and 453 transitions. [2021-08-27 16:23:35,762 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 320 [2021-08-27 16:23:35,763 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 320 [2021-08-27 16:23:35,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 320 states and 453 transitions. [2021-08-27 16:23:35,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:23:35,765 INFO L681 BuchiCegarLoop]: Abstraction has 320 states and 453 transitions. [2021-08-27 16:23:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states and 453 transitions. [2021-08-27 16:23:35,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 201. [2021-08-27 16:23:35,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 201 states have (on average 1.3930348258706469) internal successors, (280), 200 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:23:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 280 transitions. [2021-08-27 16:23:35,780 INFO L704 BuchiCegarLoop]: Abstraction has 201 states and 280 transitions. [2021-08-27 16:23:35,781 INFO L587 BuchiCegarLoop]: Abstraction has 201 states and 280 transitions. [2021-08-27 16:23:35,781 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:23:35,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 280 transitions. [2021-08-27 16:23:35,782 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 135 [2021-08-27 16:23:35,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:23:35,782 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:23:35,783 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:23:35,783 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] [2021-08-27 16:23:35,783 INFO L791 eck$LassoCheckResult]: Stem: 787#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 720#L-1 havoc main_#res;havoc main_#t~ret71, main_~retValue_acc~8, main_~tmp~9;havoc main_~retValue_acc~8;havoc main_~tmp~9; 718#L406 havoc valid_product_#res;havoc valid_product_~retValue_acc~4;havoc valid_product_~retValue_acc~4;valid_product_~retValue_acc~4 := 1;valid_product_#res := valid_product_~retValue_acc~4; 719#L414 main_#t~ret71 := valid_product_#res;main_~tmp~9 := main_#t~ret71;havoc main_#t~ret71; 695#L877 assume 0 != main_~tmp~9; 696#L853 ~switchedOnBeforeTS~0 := 0; 723#L338 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 734#L359-1 [2021-08-27 16:23:35,784 INFO L793 eck$LassoCheckResult]: Loop: 734#L359-1 assume !false; 811#L274 assume test_~splverifierCounter~0 < 4; 812#L275 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 842#L283 assume !(0 != test_~tmp~4); 841#L283-1 test_~tmp___0~1 := test_#t~nondet29;havoc test_#t~nondet29; 840#L293 assume !(0 != test_~tmp___0~1); 838#L293-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 837#L303 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 834#L311-2 havoc __utac_acc__Specification5_spec__2_#t~ret32;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 832#L192 __utac_acc__Specification5_spec__2_#t~ret32 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret32;havoc __utac_acc__Specification5_spec__2_#t~ret32; 830#L348 assume !(0 != ~pumpRunning~0); 829#L64 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 827#L122 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret7, processEnvironment__wrappee__methaneQuery_~tmp~0;havoc processEnvironment__wrappee__methaneQuery_~tmp~0; 824#L96-1 assume !(0 != ~pumpRunning~0); 818#L71 havoc __utac_acc__Specification5_spec__3_#t~ret33, __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 679#L966 __utac_acc__Specification5_spec__3_#t~ret33 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret33;havoc __utac_acc__Specification5_spec__3_#t~ret33; 680#L359 assume 2 != __utac_acc__Specification5_spec__3_~tmp~5;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 817#L192-1 __utac_acc__Specification5_spec__3_#t~ret34 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 816#L363 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 734#L359-1 [2021-08-27 16:23:35,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:23:35,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:23:35,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:23:35,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921211520] [2021-08-27 16:23:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:23:35,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:23:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:23:35,810 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:23:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:23:35,856 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:23:35,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:23:35,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1175247994, now seen corresponding path program 1 times [2021-08-27 16:23:35,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:23:35,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151488261] [2021-08-27 16:23:35,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:23:35,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:23:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:23:35,861 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:23:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:23:35,869 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:23:35,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:23:35,870 INFO L82 PathProgramCache]: Analyzing trace with hash 381563252, now seen corresponding path program 1 times [2021-08-27 16:23:35,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:23:35,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279998519] [2021-08-27 16:23:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:23:35,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:23:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:23:35,925 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:23:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:23:35,988 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:14,737 WARN L207 SmtUtils]: Spent 38.55 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:24:55,392 WARN L207 SmtUtils]: Spent 19.74 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:24:55,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:24:55 BoogieIcfgContainer [2021-08-27 16:24:55,476 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:24:55,476 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:24:55,476 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:24:55,477 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:24:55,477 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:23:34" (3/4) ... [2021-08-27 16:24:55,479 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:24:55,519 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:24:55,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:24:55,527 INFO L168 Benchmark]: Toolchain (without parser) took 82650.75 ms. Allocated memory was 54.5 MB in the beginning and 98.6 MB in the end (delta: 44.0 MB). Free memory was 30.9 MB in the beginning and 46.0 MB in the end (delta: -15.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:55,529 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.1 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:24:55,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.35 ms. Allocated memory is still 54.5 MB. Free memory was 30.7 MB in the beginning and 25.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:55,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.78 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 25.5 MB in the beginning and 47.9 MB in the end (delta: -22.3 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:55,534 INFO L168 Benchmark]: Boogie Preprocessor took 30.36 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 45.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:55,534 INFO L168 Benchmark]: RCFGBuilder took 962.89 ms. Allocated memory is still 67.1 MB. Free memory was 45.3 MB in the beginning and 37.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:55,535 INFO L168 Benchmark]: BuchiAutomizer took 81072.87 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 37.0 MB in the beginning and 48.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 54.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:55,535 INFO L168 Benchmark]: Witness Printer took 49.77 ms. Allocated memory is still 98.6 MB. Free memory was 48.0 MB in the beginning and 46.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:55,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.1 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 447.35 ms. Allocated memory is still 54.5 MB. Free memory was 30.7 MB in the beginning and 25.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.78 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 25.5 MB in the beginning and 47.9 MB in the end (delta: -22.3 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.36 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 45.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 962.89 ms. Allocated memory is still 67.1 MB. Free memory was 45.3 MB in the beginning and 37.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 81072.87 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 37.0 MB in the beginning and 48.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 54.1 MB. Max. memory is 16.1 GB. * Witness Printer took 49.77 ms. Allocated memory is still 98.6 MB. Free memory was 48.0 MB in the beginning and 46.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 201 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 81.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 80.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 34.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 119 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 201 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 393 SDtfs, 695 SDslu, 468 SDs, 0 SdLazy, 100 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 120.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 273]: 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 {NULL=0, NULL=0, NULL=21395, NULL=0, retValue_acc=1, NULL=1, NULL=21398, retValue_acc=0, NULL=21400, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1689b673=0, NULL=21397, NULL=21383, methaneLevelCritical=0, NULL=0, tmp=0, tmp=1, NULL=0, NULL=0, NULL=21378, NULL=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@558c308b=0, NULL=0, NULL=0, NULL=21388, cleanupTimeShifts=4, switchedOnBeforeTS=0, NULL=21391, \result=0, NULL=0, systemActive=1, waterLevel=1, \result=1, NULL=0, NULL=21376, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ae22b20=0, NULL=21399, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=21394, \result=1, NULL=21396, head=0, pumpRunning=0, tmp___0=0, NULL=21377, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@648287da=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e9efe02=0, NULL=21382, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@349e6dc0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a69047e=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ddc3aaf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@253da928=54, retValue_acc=1, NULL=21380, NULL=0, NULL=21393, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10ef4452=0, NULL=0, NULL=21402, NULL=21403, NULL=0, NULL=21386, tmp___2=54, NULL=0, tmp___0=0, NULL=21385, splverifierCounter=0, NULL=0, NULL=0, NULL=21379, NULL=21392, NULL=21381, tmp=0, NULL=21401, head=0, retValue_acc=0, NULL=0, tmp=0, NULL=21387, NULL=0, tmp=1, NULL=0, NULL=21389, NULL=0, NULL=21384, NULL=21390} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L52] int pumpRunning = 0; [L53] int systemActive = 1; [L332] int switchedOnBeforeTS ; [L588] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L794] int cleanupTimeShifts = 4; [L891] int waterLevel = 1; [L892] int methaneLevelCritical = 0; [L868] int retValue_acc ; [L869] int tmp ; [L410] int retValue_acc ; [L413] retValue_acc = 1 [L414] return (retValue_acc); [L875] tmp = valid_product() [L877] COND TRUE \read(tmp) [L337] switchedOnBeforeTS = 0 [L264] int splverifierCounter ; [L265] int tmp ; [L266] int tmp___0 ; [L267] int tmp___1 ; [L268] int tmp___2 ; [L271] splverifierCounter = 0 Loop: [L273] COND TRUE 1 [L275] COND TRUE splverifierCounter < 4 [L281] tmp = __VERIFIER_nondet_int() [L283] COND FALSE !(\read(tmp)) [L291] tmp___0 = __VERIFIER_nondet_int() [L293] COND FALSE !(\read(tmp___0)) [L301] tmp___2 = __VERIFIER_nondet_int() [L303] COND TRUE \read(tmp___2) [L255] systemActive = 1 [L188] int retValue_acc ; [L191] retValue_acc = pumpRunning [L192] return (retValue_acc); [L346] switchedOnBeforeTS = isPumpRunning() [L64] COND FALSE !(\read(pumpRunning)) [L71] COND TRUE \read(systemActive) [L119] int tmp ; [L122] COND FALSE !(\read(pumpRunning)) [L93] int tmp ; [L96] COND FALSE !(\read(pumpRunning)) [L352] int tmp ; [L353] int tmp___0 ; [L962] int retValue_acc ; [L965] retValue_acc = waterLevel [L966] return (retValue_acc); [L357] tmp = getWaterLevel() [L359] COND TRUE tmp != 2 [L188] int retValue_acc ; [L191] retValue_acc = pumpRunning [L192] return (retValue_acc); [L361] tmp___0 = isPumpRunning() [L363] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:24:55,581 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...