./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product52.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_product52.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 107fce0473a360d3222152377d740ad2acd97172 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:25:49,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:25:49,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:25:49,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:25:49,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:25:49,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:25:49,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:25:49,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:25:49,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:25:49,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:25:49,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:25:49,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:25:49,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:25:49,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:25:49,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:25:49,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:25:49,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:25:49,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:25:49,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:25:49,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:25:49,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:25:49,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:25:49,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:25:49,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:25:49,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:25:49,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:25:49,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:25:49,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:25:49,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:25:49,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:25:49,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:25:49,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:25:49,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:25:49,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:25:49,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:25:49,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:25:49,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:25:49,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:25:49,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:25:49,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:25:49,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:25:49,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:25:49,518 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:25:49,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:25:49,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:25:49,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:25:49,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:25:49,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:25:49,521 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:25:49,522 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:25:49,522 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:25:49,522 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:25:49,523 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:25:49,523 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:25:49,523 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:25:49,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:25:49,524 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:25:49,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:25:49,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:25:49,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:25:49,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:25:49,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:25:49,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:25:49,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:25:49,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:25:49,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:25:49,534 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:25:49,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:25:49,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:25:49,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:25:49,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:25:49,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:25:49,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:25:49,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:25:49,537 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:25:49,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 107fce0473a360d3222152377d740ad2acd97172 [2021-08-27 16:25:49,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:25:49,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:25:49,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:25:49,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:25:49,847 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:25:49,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product52.cil.c [2021-08-27 16:25:49,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9685daf59/7b3af46a492741078f8ee0e5c548923c/FLAGea5a0450d [2021-08-27 16:25:50,427 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:25:50,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product52.cil.c [2021-08-27 16:25:50,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9685daf59/7b3af46a492741078f8ee0e5c548923c/FLAGea5a0450d [2021-08-27 16:25:50,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9685daf59/7b3af46a492741078f8ee0e5c548923c [2021-08-27 16:25:50,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:25:50,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:25:50,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:25:50,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:25:50,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:25:50,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:25:50" (1/1) ... [2021-08-27 16:25:50,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc23b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:50, skipping insertion in model container [2021-08-27 16:25:50,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:25:50" (1/1) ... [2021-08-27 16:25:50,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:25:50,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:25:51,134 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_product52.cil.c[12348,12361] [2021-08-27 16:25:51,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:25:51,167 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:25:51,200 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_product52.cil.c[12348,12361] [2021-08-27 16:25:51,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:25:51,231 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:25:51,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:51 WrapperNode [2021-08-27 16:25:51,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:25:51,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:25:51,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:25:51,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:25:51,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:51" (1/1) ... [2021-08-27 16:25:51,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:51" (1/1) ... [2021-08-27 16:25:51,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:25:51,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:25:51,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:25:51,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:25:51,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:51" (1/1) ... [2021-08-27 16:25:51,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:51" (1/1) ... [2021-08-27 16:25:51,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:51" (1/1) ... [2021-08-27 16:25:51,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:51" (1/1) ... [2021-08-27 16:25:51,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:51" (1/1) ... [2021-08-27 16:25:51,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:51" (1/1) ... [2021-08-27 16:25:51,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:51" (1/1) ... [2021-08-27 16:25:51,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:25:51,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:25:51,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:25:51,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:25:51,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:51" (1/1) ... [2021-08-27 16:25:51,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:25:51,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:25:51,398 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 16:25:51,425 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 16:25:51,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:25:51,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:25:51,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:25:51,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:25:52,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:25:52,250 INFO L299 CfgBuilder]: Removed 176 assume(true) statements. [2021-08-27 16:25:52,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:52 BoogieIcfgContainer [2021-08-27 16:25:52,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:25:52,253 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:25:52,253 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:25:52,256 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:25:52,257 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:52,257 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:25:50" (1/3) ... [2021-08-27 16:25:52,258 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29fef1e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:25:52, skipping insertion in model container [2021-08-27 16:25:52,258 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:52,258 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:51" (2/3) ... [2021-08-27 16:25:52,259 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29fef1e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:25:52, skipping insertion in model container [2021-08-27 16:25:52,259 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:52,259 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:52" (3/3) ... [2021-08-27 16:25:52,260 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2021-08-27 16:25:52,295 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:25:52,295 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:25:52,296 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:25:52,296 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:25:52,296 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:25:52,296 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:25:52,296 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:25:52,296 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:25:52,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 125 states, 124 states have (on average 1.5241935483870968) internal successors, (189), 124 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:52,334 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-08-27 16:25:52,334 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:52,338 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:52,345 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:52,345 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:52,345 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:25:52,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 125 states, 124 states have (on average 1.5241935483870968) internal successors, (189), 124 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:52,352 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-08-27 16:25:52,352 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:52,352 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:52,353 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:52,353 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:52,357 INFO L791 eck$LassoCheckResult]: Stem: 116#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 40#L-1true havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 98#L1000true havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 96#L1008true main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 114#L500true assume 0 != main_~tmp~3; 26#L471true ~switchedOnBeforeTS~0 := 0; 41#L531true havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 72#L552-1true [2021-08-27 16:25:52,357 INFO L793 eck$LassoCheckResult]: Loop: 72#L552-1true assume !false; 121#L695true assume test_~splverifierCounter~0 < 4; 48#L696true test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 53#L704true assume !(0 != test_~tmp~5); 66#L704-1true test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 12#L714true assume !(0 != test_~tmp___0~1); 21#L714-1true test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 19#L724true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 59#L732-1true havoc __utac_acc__Specification5_spec__2_#t~ret43;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 93#L876true __utac_acc__Specification5_spec__2_#t~ret43 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret43;havoc __utac_acc__Specification5_spec__2_#t~ret43; 77#L541true assume !(0 != ~pumpRunning~0); 89#L765true assume !(0 != ~systemActive~0); 5#L772true havoc __utac_acc__Specification5_spec__3_#t~ret44, __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_~tmp~4, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~4;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 104#L654true __utac_acc__Specification5_spec__3_#t~ret44 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~4 := __utac_acc__Specification5_spec__3_#t~ret44;havoc __utac_acc__Specification5_spec__3_#t~ret44; 43#L552true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~4); 72#L552-1true [2021-08-27 16:25:52,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:52,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:25:52,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:52,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233358809] [2021-08-27 16:25:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:52,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:52,552 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:52,685 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:52,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:52,688 INFO L82 PathProgramCache]: Analyzing trace with hash 677042294, now seen corresponding path program 1 times [2021-08-27 16:25:52,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:52,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155344690] [2021-08-27 16:25:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:52,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:52,743 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 16:25:52,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:52,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155344690] [2021-08-27 16:25:52,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155344690] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:52,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:52,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:25:52,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667180817] [2021-08-27 16:25:52,749 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:52,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:25:52,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:25:52,763 INFO L87 Difference]: Start difference. First operand has 125 states, 124 states have (on average 1.5241935483870968) internal successors, (189), 124 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 16:25:52,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:52,822 INFO L93 Difference]: Finished difference Result 243 states and 353 transitions. [2021-08-27 16:25:52,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:25:52,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 243 states and 353 transitions. [2021-08-27 16:25:52,830 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 158 [2021-08-27 16:25:52,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 243 states to 229 states and 338 transitions. [2021-08-27 16:25:52,836 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 229 [2021-08-27 16:25:52,837 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 229 [2021-08-27 16:25:52,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 229 states and 338 transitions. [2021-08-27 16:25:52,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:52,839 INFO L681 BuchiCegarLoop]: Abstraction has 229 states and 338 transitions. [2021-08-27 16:25:52,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states and 338 transitions. [2021-08-27 16:25:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2021-08-27 16:25:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 227 states have (on average 1.475770925110132) internal successors, (335), 226 states have internal predecessors, (335), 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 16:25:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 335 transitions. [2021-08-27 16:25:52,881 INFO L704 BuchiCegarLoop]: Abstraction has 227 states and 335 transitions. [2021-08-27 16:25:52,881 INFO L587 BuchiCegarLoop]: Abstraction has 227 states and 335 transitions. [2021-08-27 16:25:52,881 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:25:52,881 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 227 states and 335 transitions. [2021-08-27 16:25:52,883 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 156 [2021-08-27 16:25:52,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:52,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:52,884 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:52,884 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 16:25:52,884 INFO L791 eck$LassoCheckResult]: Stem: 498#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 436#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 437#L1000 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 490#L1008 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 491#L500 assume 0 != main_~tmp~3; 417#L471 ~switchedOnBeforeTS~0 := 0; 418#L531 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 438#L552-1 [2021-08-27 16:25:52,888 INFO L793 eck$LassoCheckResult]: Loop: 438#L552-1 assume !false; 542#L695 assume test_~splverifierCounter~0 < 4; 543#L696 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 603#L704 assume !(0 != test_~tmp~5); 601#L704-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 600#L714 assume !(0 != test_~tmp___0~1); 598#L714-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 597#L724 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 405#L732-1 havoc __utac_acc__Specification5_spec__2_#t~ret43;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 595#L876 __utac_acc__Specification5_spec__2_#t~ret43 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret43;havoc __utac_acc__Specification5_spec__2_#t~ret43; 593#L541 assume !(0 != ~pumpRunning~0); 592#L765 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 557#L823 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 555#L797-1 assume !(0 == ~pumpRunning~0); 549#L772 havoc __utac_acc__Specification5_spec__3_#t~ret44, __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_~tmp~4, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~4;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 548#L654 __utac_acc__Specification5_spec__3_#t~ret44 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~4 := __utac_acc__Specification5_spec__3_#t~ret44;havoc __utac_acc__Specification5_spec__3_#t~ret44; 546#L552 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~4); 438#L552-1 [2021-08-27 16:25:52,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:52,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:25:52,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:52,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417253499] [2021-08-27 16:25:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:52,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:52,980 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:53,055 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:53,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:53,056 INFO L82 PathProgramCache]: Analyzing trace with hash -543108204, now seen corresponding path program 1 times [2021-08-27 16:25:53,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:53,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173177968] [2021-08-27 16:25:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:53,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:53,078 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 16:25:53,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:53,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173177968] [2021-08-27 16:25:53,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173177968] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:53,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:53,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:25:53,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769464298] [2021-08-27 16:25:53,080 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:53,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:53,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:25:53,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:25:53,083 INFO L87 Difference]: Start difference. First operand 227 states and 335 transitions. cyclomatic complexity: 111 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 16:25:53,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:53,259 INFO L93 Difference]: Finished difference Result 326 states and 457 transitions. [2021-08-27 16:25:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:25:53,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 326 states and 457 transitions. [2021-08-27 16:25:53,273 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 231 [2021-08-27 16:25:53,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 326 states to 326 states and 457 transitions. [2021-08-27 16:25:53,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 326 [2021-08-27 16:25:53,290 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 326 [2021-08-27 16:25:53,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 326 states and 457 transitions. [2021-08-27 16:25:53,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:53,294 INFO L681 BuchiCegarLoop]: Abstraction has 326 states and 457 transitions. [2021-08-27 16:25:53,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states and 457 transitions. [2021-08-27 16:25:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-08-27 16:25:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 326 states have (on average 1.401840490797546) internal successors, (457), 325 states have internal predecessors, (457), 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 16:25:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 457 transitions. [2021-08-27 16:25:53,315 INFO L704 BuchiCegarLoop]: Abstraction has 326 states and 457 transitions. [2021-08-27 16:25:53,316 INFO L587 BuchiCegarLoop]: Abstraction has 326 states and 457 transitions. [2021-08-27 16:25:53,316 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:25:53,316 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 326 states and 457 transitions. [2021-08-27 16:25:53,318 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 231 [2021-08-27 16:25:53,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:53,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:53,319 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:53,319 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:53,319 INFO L791 eck$LassoCheckResult]: Stem: 1083#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1003#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 1004#L1000 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 1067#L1008 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 1068#L500 assume 0 != main_~tmp~3; 982#L471 ~switchedOnBeforeTS~0 := 0; 983#L531 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1005#L552-1 [2021-08-27 16:25:53,320 INFO L793 eck$LassoCheckResult]: Loop: 1005#L552-1 assume !false; 1046#L695 assume test_~splverifierCounter~0 < 4; 1166#L696 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 1165#L704 assume !(0 != test_~tmp~5); 1163#L704-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 1162#L714 assume !(0 != test_~tmp___0~1); 972#L714-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 966#L724 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 968#L732-1 havoc __utac_acc__Specification5_spec__2_#t~ret43;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 1033#L876 __utac_acc__Specification5_spec__2_#t~ret43 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret43;havoc __utac_acc__Specification5_spec__2_#t~ret43; 1051#L541 assume !(0 != ~pumpRunning~0); 1052#L765 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 936#L823 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 937#L797-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret79, isHighWaterLevel_~retValue_acc~10, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~10;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1056#L662-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1057#L667-1 isHighWaterLevel_#t~ret79 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret79;havoc isHighWaterLevel_#t~ret79; 1058#L925-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~2 := 0; 1053#L925-5 isHighWaterLevel_~retValue_acc~10 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~10; 1054#L931-1 processEnvironment__wrappee__highWaterSensor_#t~ret60 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret60;havoc processEnvironment__wrappee__highWaterSensor_#t~ret60; 1140#L801-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1141#L772 havoc __utac_acc__Specification5_spec__3_#t~ret44, __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_~tmp~4, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~4;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 1074#L654 __utac_acc__Specification5_spec__3_#t~ret44 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~4 := __utac_acc__Specification5_spec__3_#t~ret44;havoc __utac_acc__Specification5_spec__3_#t~ret44; 1075#L552 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~4); 1005#L552-1 [2021-08-27 16:25:53,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:53,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:25:53,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:53,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265133613] [2021-08-27 16:25:53,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:53,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:53,353 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:53,410 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:53,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:53,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1971117568, now seen corresponding path program 1 times [2021-08-27 16:25:53,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:53,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165455456] [2021-08-27 16:25:53,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:53,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:53,470 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 16:25:53,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:53,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165455456] [2021-08-27 16:25:53,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165455456] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:53,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:53,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:25:53,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203156240] [2021-08-27 16:25:53,472 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:53,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:53,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:25:53,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:25:53,474 INFO L87 Difference]: Start difference. First operand 326 states and 457 transitions. cyclomatic complexity: 134 Second operand has 5 states, 4 states have (on average 5.75) 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) [2021-08-27 16:25:53,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:53,869 INFO L93 Difference]: Finished difference Result 1391 states and 1967 transitions. [2021-08-27 16:25:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:25:53,870 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1391 states and 1967 transitions. [2021-08-27 16:25:53,883 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 974 [2021-08-27 16:25:53,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1391 states to 1391 states and 1967 transitions. [2021-08-27 16:25:53,895 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1391 [2021-08-27 16:25:53,897 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1391 [2021-08-27 16:25:53,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1391 states and 1967 transitions. [2021-08-27 16:25:53,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:53,905 INFO L681 BuchiCegarLoop]: Abstraction has 1391 states and 1967 transitions. [2021-08-27 16:25:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states and 1967 transitions. [2021-08-27 16:25:53,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 639. [2021-08-27 16:25:53,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 639 states have (on average 1.381846635367762) internal successors, (883), 638 states have internal predecessors, (883), 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 16:25:53,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 883 transitions. [2021-08-27 16:25:53,936 INFO L704 BuchiCegarLoop]: Abstraction has 639 states and 883 transitions. [2021-08-27 16:25:53,936 INFO L587 BuchiCegarLoop]: Abstraction has 639 states and 883 transitions. [2021-08-27 16:25:53,936 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:25:53,936 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 639 states and 883 transitions. [2021-08-27 16:25:53,943 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 458 [2021-08-27 16:25:53,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:53,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:53,944 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:53,944 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] [2021-08-27 16:25:53,945 INFO L791 eck$LassoCheckResult]: Stem: 2817#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 2737#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 2738#L1000 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 2804#L1008 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 2805#L500 assume 0 != main_~tmp~3; 2716#L471 ~switchedOnBeforeTS~0 := 0; 2717#L531 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2739#L552-1 [2021-08-27 16:25:53,945 INFO L793 eck$LassoCheckResult]: Loop: 2739#L552-1 assume !false; 3013#L695 assume test_~splverifierCounter~0 < 4; 3012#L696 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 3011#L704 assume !(0 != test_~tmp~5); 3009#L704-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 3008#L714 assume !(0 != test_~tmp___0~1); 2989#L714-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 2988#L724 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2952#L732-1 havoc __utac_acc__Specification5_spec__2_#t~ret43;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 2951#L876 __utac_acc__Specification5_spec__2_#t~ret43 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret43;havoc __utac_acc__Specification5_spec__2_#t~ret43; 2950#L541 assume !(0 != ~pumpRunning~0); 2949#L765 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 2941#L823 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 2938#L797-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret79, isHighWaterLevel_~retValue_acc~10, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~10;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 2935#L662-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 2929#L667-1 isHighWaterLevel_#t~ret79 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret79;havoc isHighWaterLevel_#t~ret79; 2927#L925-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~2 := 0; 2920#L925-5 isHighWaterLevel_~retValue_acc~10 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~10; 2914#L931-1 processEnvironment__wrappee__highWaterSensor_#t~ret60 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret60;havoc processEnvironment__wrappee__highWaterSensor_#t~ret60; 2901#L801-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 2902#L772 havoc __utac_acc__Specification5_spec__3_#t~ret44, __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_~tmp~4, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~4;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 3018#L654 __utac_acc__Specification5_spec__3_#t~ret44 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~4 := __utac_acc__Specification5_spec__3_#t~ret44;havoc __utac_acc__Specification5_spec__3_#t~ret44; 3017#L552 assume 2 != __utac_acc__Specification5_spec__3_~tmp~4;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 3016#L876-1 __utac_acc__Specification5_spec__3_#t~ret45 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 3015#L556 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 2739#L552-1 [2021-08-27 16:25:53,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:53,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:25:53,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:53,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808982978] [2021-08-27 16:25:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:53,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:53,974 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:54,007 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:54,011 INFO L82 PathProgramCache]: Analyzing trace with hash -163417157, now seen corresponding path program 1 times [2021-08-27 16:25:54,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:54,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960594355] [2021-08-27 16:25:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:54,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:54,019 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:54,028 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:54,029 INFO L82 PathProgramCache]: Analyzing trace with hash -226843339, now seen corresponding path program 1 times [2021-08-27 16:25:54,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:54,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956299121] [2021-08-27 16:25:54,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:54,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:54,083 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:54,144 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:36,761 WARN L207 SmtUtils]: Spent 42.14 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:27:20,180 WARN L207 SmtUtils]: Spent 20.94 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:27:20,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:27:20 BoogieIcfgContainer [2021-08-27 16:27:20,329 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:27:20,330 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:27:20,330 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:27:20,330 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:27:20,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:52" (3/4) ... [2021-08-27 16:27:20,346 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:27:20,416 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:27:20,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:27:20,417 INFO L168 Benchmark]: Toolchain (without parser) took 89638.73 ms. Allocated memory was 50.3 MB in the beginning and 123.7 MB in the end (delta: 73.4 MB). Free memory was 26.8 MB in the beginning and 35.4 MB in the end (delta: -8.6 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:20,417 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 50.3 MB. Free memory was 32.8 MB in the beginning and 32.7 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:27:20,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.08 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.6 MB in the beginning and 35.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:20,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.45 ms. Allocated memory is still 60.8 MB. Free memory was 35.7 MB in the beginning and 32.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:20,421 INFO L168 Benchmark]: Boogie Preprocessor took 59.85 ms. Allocated memory is still 60.8 MB. Free memory was 32.0 MB in the beginning and 29.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:20,422 INFO L168 Benchmark]: RCFGBuilder took 908.25 ms. Allocated memory is still 60.8 MB. Free memory was 29.3 MB in the beginning and 28.6 MB in the end (delta: 703.3 kB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:20,423 INFO L168 Benchmark]: BuchiAutomizer took 88076.07 ms. Allocated memory was 60.8 MB in the beginning and 123.7 MB in the end (delta: 62.9 MB). Free memory was 28.3 MB in the beginning and 38.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 72.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:20,424 INFO L168 Benchmark]: Witness Printer took 86.12 ms. Allocated memory is still 123.7 MB. Free memory was 38.5 MB in the beginning and 35.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:20,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 50.3 MB. Free memory was 32.8 MB in the beginning and 32.7 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 453.08 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.6 MB in the beginning and 35.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.45 ms. Allocated memory is still 60.8 MB. Free memory was 35.7 MB in the beginning and 32.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.85 ms. Allocated memory is still 60.8 MB. Free memory was 32.0 MB in the beginning and 29.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 908.25 ms. Allocated memory is still 60.8 MB. Free memory was 29.3 MB in the beginning and 28.6 MB in the end (delta: 703.3 kB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 88076.07 ms. Allocated memory was 60.8 MB in the beginning and 123.7 MB in the end (delta: 62.9 MB). Free memory was 28.3 MB in the beginning and 38.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 72.8 MB. Max. memory is 16.1 GB. * Witness Printer took 86.12 ms. Allocated memory is still 123.7 MB. Free memory was 38.5 MB in the beginning and 35.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 639 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 88.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 87.1s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 82.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 754 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 639 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 658 SDtfs, 1052 SDslu, 1097 SDs, 0 SdLazy, 197 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 367.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 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: 694]: 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2873bc02=0, NULL=0, NULL=0, NULL=2397, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c671be6=0, NULL=1, NULL=2399, retValue_acc=1, methaneLevelCritical=0, tmp=0, NULL=0, NULL=2404, tmp___1=0, NULL=2392, NULL=0, NULL=2398, NULL=2405, cleanupTimeShifts=4, NULL=0, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, tmp=1, NULL=2395, NULL=0, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, tmp=1, NULL=2403, tmp___0=0, NULL=2414, retValue_acc=1, NULL=2400, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ba02c02=0, head=0, NULL=0, NULL=0, NULL=2412, tmp=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@52ee7e5a=0, NULL=0, retValue_acc=0, NULL=2408, NULL=2409, NULL=2393, tmp___0=0, NULL=2390, tmp=1, NULL=0, NULL=0, NULL=2410, NULL=2413, switchedOnBeforeTS=0, NULL=2415, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6ffb9ce=0, tmp=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75564ce9=0, NULL=2391, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6badf8e6=0, \result=0, NULL=2396, NULL=0, NULL=0, NULL=2418, tmp___0=0, NULL=2406, \result=0, NULL=2407, NULL=0, NULL=2401, NULL=2416, tmp___2=74, splverifierCounter=0, NULL=0, NULL=2411, NULL=2417, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5073e838=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a059d=74, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@941959b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56f1ff11=0, retValue_acc=0, NULL=2402} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L525] int switchedOnBeforeTS ; [L579] int waterLevel = 1; [L580] int methaneLevelCritical = 0; [L755] int pumpRunning = 0; [L756] int systemActive = 1; [L491] int retValue_acc ; [L492] int tmp ; [L1004] int retValue_acc ; [L1007] retValue_acc = 1 [L1008] return (retValue_acc); [L498] tmp = valid_product() [L500] COND TRUE \read(tmp) [L530] switchedOnBeforeTS = 0 [L685] int splverifierCounter ; [L686] int tmp ; [L687] int tmp___0 ; [L688] int tmp___1 ; [L689] int tmp___2 ; [L692] splverifierCounter = 0 Loop: [L694] COND TRUE 1 [L696] COND TRUE splverifierCounter < 4 [L702] tmp = __VERIFIER_nondet_int() [L704] COND FALSE !(\read(tmp)) [L712] tmp___0 = __VERIFIER_nondet_int() [L714] COND FALSE !(\read(tmp___0)) [L722] tmp___2 = __VERIFIER_nondet_int() [L724] COND TRUE \read(tmp___2) [L973] systemActive = 1 [L872] int retValue_acc ; [L875] retValue_acc = pumpRunning [L876] return (retValue_acc); [L539] switchedOnBeforeTS = isPumpRunning() [L765] COND FALSE !(\read(pumpRunning)) [L772] COND TRUE \read(systemActive) [L820] int tmp ; [L823] COND FALSE !(\read(pumpRunning)) [L794] int tmp ; [L797] COND TRUE ! pumpRunning [L917] int retValue_acc ; [L918] int tmp ; [L919] int tmp___0 ; [L659] int retValue_acc ; [L662] COND TRUE waterLevel < 2 [L663] retValue_acc = 1 [L664] return (retValue_acc); [L923] tmp = isHighWaterSensorDry() [L925] COND TRUE \read(tmp) [L926] tmp___0 = 0 [L930] retValue_acc = tmp___0 [L931] return (retValue_acc); [L799] tmp = isHighWaterLevel() [L801] COND FALSE !(\read(tmp)) [L545] int tmp ; [L546] int tmp___0 ; [L650] int retValue_acc ; [L653] retValue_acc = waterLevel [L654] return (retValue_acc); [L550] tmp = getWaterLevel() [L552] COND TRUE tmp != 2 [L872] int retValue_acc ; [L875] retValue_acc = pumpRunning [L876] return (retValue_acc); [L554] tmp___0 = isPumpRunning() [L556] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:27:20,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...