./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product59.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 98aa11458fb4d2fb3b93f200d7f1e58878ef4fd5 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 20:31:30,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:31:30,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:31:30,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:31:30,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:31:30,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:31:30,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:31:30,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:31:30,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:31:30,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:31:30,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:31:30,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:31:30,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:31:30,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:31:30,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:31:30,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:31:30,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:31:30,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:31:30,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:31:30,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:31:30,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:31:30,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:31:30,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:31:30,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:31:30,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:31:30,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:31:30,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:31:30,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:31:30,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:31:30,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:31:30,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:31:30,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:31:30,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:31:30,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:31:30,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:31:30,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:31:30,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:31:30,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:31:30,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:31:30,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:31:30,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:31:30,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:31:30,446 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:31:30,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:31:30,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:31:30,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:31:30,449 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:31:30,449 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:31:30,449 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:31:30,450 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:31:30,450 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:31:30,450 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:31:30,451 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:31:30,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:31:30,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:31:30,452 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:31:30,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:31:30,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:31:30,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:31:30,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:31:30,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:31:30,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:31:30,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:31:30,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:31:30,454 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:31:30,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:31:30,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:31:30,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:31:30,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:31:30,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:31:30,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:31:30,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:31:30,457 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:31:30,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98aa11458fb4d2fb3b93f200d7f1e58878ef4fd5 [2021-07-06 20:31:30,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:31:30,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:31:30,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:31:30,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:31:30,852 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:31:30,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c [2021-07-06 20:31:30,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743bea7b5/cf08efd93a554c32b366c615275d25a4/FLAG5b4f8712c [2021-07-06 20:31:31,407 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:31:31,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c [2021-07-06 20:31:31,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743bea7b5/cf08efd93a554c32b366c615275d25a4/FLAG5b4f8712c [2021-07-06 20:31:31,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743bea7b5/cf08efd93a554c32b366c615275d25a4 [2021-07-06 20:31:31,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:31:31,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:31:31,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:31:31,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:31:31,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:31:31,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:31:31" (1/1) ... [2021-07-06 20:31:31,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@624652a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:31, skipping insertion in model container [2021-07-06 20:31:31,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:31:31" (1/1) ... [2021-07-06 20:31:31,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:31:31,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:31:32,161 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c[8847,8860] [2021-07-06 20:31:32,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:31:32,209 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:31:32,242 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c[8847,8860] [2021-07-06 20:31:32,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:31:32,297 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:31:32,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:32 WrapperNode [2021-07-06 20:31:32,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:31:32,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:31:32,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:31:32,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:31:32,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:32" (1/1) ... [2021-07-06 20:31:32,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:32" (1/1) ... [2021-07-06 20:31:32,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:31:32,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:31:32,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:31:32,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:31:32,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:32" (1/1) ... [2021-07-06 20:31:32,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:32" (1/1) ... [2021-07-06 20:31:32,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:32" (1/1) ... [2021-07-06 20:31:32,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:32" (1/1) ... [2021-07-06 20:31:32,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:32" (1/1) ... [2021-07-06 20:31:32,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:32" (1/1) ... [2021-07-06 20:31:32,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:32" (1/1) ... [2021-07-06 20:31:32,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:31:32,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:31:32,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:31:32,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:31:32,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:32" (1/1) ... [2021-07-06 20:31:32,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:31:32,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:31:32,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 20:31:32,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 20:31:32,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:31:32,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:31:32,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:31:32,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:31:33,376 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:31:33,376 INFO L299 CfgBuilder]: Removed 196 assume(true) statements. [2021-07-06 20:31:33,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:31:33 BoogieIcfgContainer [2021-07-06 20:31:33,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:31:33,378 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:31:33,379 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:31:33,381 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:31:33,382 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:31:33,382 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:31:31" (1/3) ... [2021-07-06 20:31:33,383 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51a6852d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:31:33, skipping insertion in model container [2021-07-06 20:31:33,383 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:31:33,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:31:32" (2/3) ... [2021-07-06 20:31:33,384 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51a6852d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:31:33, skipping insertion in model container [2021-07-06 20:31:33,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:31:33,384 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:31:33" (3/3) ... [2021-07-06 20:31:33,385 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product59.cil.c [2021-07-06 20:31:33,420 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:31:33,420 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:31:33,420 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:31:33,420 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:31:33,420 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:31:33,421 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:31:33,421 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:31:33,421 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:31:33,440 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:31:33,460 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-07-06 20:31:33,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:31:33,460 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:31:33,466 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:31:33,467 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:31:33,467 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:31:33,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:31:33,474 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-07-06 20:31:33,474 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:31:33,474 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:31:33,475 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:31:33,475 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:31:33,479 INFO L791 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(13);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string25.base, #t~string25.offset, 1);call write~init~int(80, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(117, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(109, #t~string25.base, 3 + #t~string25.offset, 1);call write~init~int(112, #t~string25.base, 4 + #t~string25.offset, 1);call write~init~int(58, #t~string25.base, 5 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 6 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string31.base, #t~string31.offset, 1);call write~init~int(32, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string33.base, #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 1 + #t~string33.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 6#L-1true havoc main_#res;havoc main_#t~ret36, main_~retValue_acc~6, main_~tmp~7;havoc main_~retValue_acc~6;havoc main_~tmp~7; 31#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 37#L75true main_#t~ret36 := valid_product_#res;main_~tmp~7 := main_#t~ret36;havoc main_#t~ret36; 81#L501true assume 0 != main_~tmp~7; 127#L478true havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 43#L91-1true [2021-07-06 20:31:33,479 INFO L793 eck$LassoCheckResult]: Loop: 43#L91-1true assume !false; 8#L125true assume test_~splverifierCounter~0 < 4; 100#L126true test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 120#L134true assume !(0 != test_~tmp~1); 117#L134-1true test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 14#L144true assume !(0 != test_~tmp___0~1); 11#L144-1true test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 71#L154true assume 0 != test_~tmp___2~0; 54#L160-1true assume !(0 != ~pumpRunning~0); 41#L196true assume !(0 != ~systemActive~0); 129#L203true havoc __utac_acc__Specification4_spec__1_#t~ret8, __utac_acc__Specification4_spec__1_#t~ret9, __utac_acc__Specification4_spec__1_~tmp~0, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~0;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 13#L590true __utac_acc__Specification4_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~0 := __utac_acc__Specification4_spec__1_#t~ret8;havoc __utac_acc__Specification4_spec__1_#t~ret8; 48#L91true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0); 43#L91-1true [2021-07-06 20:31:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:31:33,484 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:31:33,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:31:33,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604102306] [2021-07-06 20:31:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:31:33,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:31:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:31:33,675 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:31:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:31:33,772 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:31:33,800 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:31:33,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:31:33,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1670509173, now seen corresponding path program 1 times [2021-07-06 20:31:33,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:31:33,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130952261] [2021-07-06 20:31:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:31:33,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:31:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:31:33,809 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:31:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:31:33,813 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:31:33,817 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:31:33,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:31:33,822 INFO L82 PathProgramCache]: Analyzing trace with hash 43769765, now seen corresponding path program 1 times [2021-07-06 20:31:33,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:31:33,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186221234] [2021-07-06 20:31:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:31:33,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:31:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:31:33,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:31:33,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:31:33,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:31:33,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:31:33,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:31:33,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:31:33,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:31:33,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:31:33,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:31:33,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:31:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:31:33,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:31:33,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186221234] [2021-07-06 20:31:33,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186221234] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:31:33,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:31:33,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 20:31:33,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120449859] [2021-07-06 20:31:34,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:31:34,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-07-06 20:31:34,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:31:34,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 20:31:34,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 20:31:34,081 INFO L87 Difference]: Start difference. First operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:31:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:31:34,297 INFO L93 Difference]: Finished difference Result 312 states and 444 transitions. [2021-07-06 20:31:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 20:31:34,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 312 states and 444 transitions. [2021-07-06 20:31:34,313 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 201 [2021-07-06 20:31:34,323 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 312 states to 291 states and 423 transitions. [2021-07-06 20:31:34,325 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 291 [2021-07-06 20:31:34,326 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 291 [2021-07-06 20:31:34,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 291 states and 423 transitions. [2021-07-06 20:31:34,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:31:34,333 INFO L681 BuchiCegarLoop]: Abstraction has 291 states and 423 transitions. [2021-07-06 20:31:34,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states and 423 transitions. [2021-07-06 20:31:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 168. [2021-07-06 20:31:34,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 168 states have (on average 1.4464285714285714) internal successors, (243), 167 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:31:34,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 243 transitions. [2021-07-06 20:31:34,380 INFO L704 BuchiCegarLoop]: Abstraction has 168 states and 243 transitions. [2021-07-06 20:31:34,380 INFO L587 BuchiCegarLoop]: Abstraction has 168 states and 243 transitions. [2021-07-06 20:31:34,380 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:31:34,381 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 243 transitions. [2021-07-06 20:31:34,383 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 116 [2021-07-06 20:31:34,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:31:34,383 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:31:34,384 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:31:34,384 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:31:34,385 INFO L791 eck$LassoCheckResult]: Stem: 563#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~string19.base, #t~string19.offset := #Ultimate.allocOnStack(13);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string25.base, #t~string25.offset, 1);call write~init~int(80, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(117, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(109, #t~string25.base, 3 + #t~string25.offset, 1);call write~init~int(112, #t~string25.base, 4 + #t~string25.offset, 1);call write~init~int(58, #t~string25.base, 5 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 6 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string31.base, #t~string31.offset, 1);call write~init~int(32, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string33.base, #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 1 + #t~string33.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 470#L-1 havoc main_#res;havoc main_#t~ret36, main_~retValue_acc~6, main_~tmp~7;havoc main_~retValue_acc~6;havoc main_~tmp~7; 471#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 523#L75 main_#t~ret36 := valid_product_#res;main_~tmp~7 := main_#t~ret36;havoc main_#t~ret36; 534#L501 assume 0 != main_~tmp~7; 561#L478 havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 478#L91-1 [2021-07-06 20:31:34,389 INFO L793 eck$LassoCheckResult]: Loop: 478#L91-1 assume !false; 474#L125 assume test_~splverifierCounter~0 < 4; 475#L126 test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 578#L134 assume !(0 != test_~tmp~1); 469#L134-1 test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 487#L144 assume !(0 != test_~tmp___0~1); 480#L144-1 test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 481#L154 assume 0 != test_~tmp___2~0; 545#L160-1 assume !(0 != ~pumpRunning~0); 514#L196 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret15, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 508#L254 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret14, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 510#L228-1 assume !(0 == ~pumpRunning~0); 499#L203 havoc __utac_acc__Specification4_spec__1_#t~ret8, __utac_acc__Specification4_spec__1_#t~ret9, __utac_acc__Specification4_spec__1_~tmp~0, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~0;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 485#L590 __utac_acc__Specification4_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~0 := __utac_acc__Specification4_spec__1_#t~ret8;havoc __utac_acc__Specification4_spec__1_#t~ret8; 486#L91 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0); 478#L91-1 [2021-07-06 20:31:34,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:31:34,390 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:31:34,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:31:34,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074929152] [2021-07-06 20:31:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:31:34,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:31:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:31:34,454 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:31:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:31:34,501 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:31:34,521 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:31:34,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:31:34,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1972735892, now seen corresponding path program 1 times [2021-07-06 20:31:34,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:31:34,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847009102] [2021-07-06 20:31:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:31:34,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:31:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:31:34,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:31:34,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:31:34,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:31:34,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:31:34,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:31:34,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:31:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:31:34,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:31:34,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847009102] [2021-07-06 20:31:34,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847009102] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:31:34,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:31:34,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:31:34,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728517014] [2021-07-06 20:31:34,549 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:31:34,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:31:34,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:31:34,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:31:34,550 INFO L87 Difference]: Start difference. First operand 168 states and 243 transitions. cyclomatic complexity: 78 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:31:34,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:31:34,638 INFO L93 Difference]: Finished difference Result 207 states and 283 transitions. [2021-07-06 20:31:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:31:34,639 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 207 states and 283 transitions. [2021-07-06 20:31:34,640 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 146 [2021-07-06 20:31:34,641 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 207 states to 207 states and 283 transitions. [2021-07-06 20:31:34,642 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 207 [2021-07-06 20:31:34,642 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 207 [2021-07-06 20:31:34,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207 states and 283 transitions. [2021-07-06 20:31:34,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:31:34,644 INFO L681 BuchiCegarLoop]: Abstraction has 207 states and 283 transitions. [2021-07-06 20:31:34,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states and 283 transitions. [2021-07-06 20:31:34,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-07-06 20:31:34,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 207 states have (on average 1.3671497584541064) internal successors, (283), 206 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:31:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 283 transitions. [2021-07-06 20:31:34,661 INFO L704 BuchiCegarLoop]: Abstraction has 207 states and 283 transitions. [2021-07-06 20:31:34,661 INFO L587 BuchiCegarLoop]: Abstraction has 207 states and 283 transitions. [2021-07-06 20:31:34,661 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:31:34,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 207 states and 283 transitions. [2021-07-06 20:31:34,663 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 146 [2021-07-06 20:31:34,664 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:31:34,664 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:31:34,665 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:31:34,665 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:31:34,665 INFO L791 eck$LassoCheckResult]: Stem: 954#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~string19.base, #t~string19.offset := #Ultimate.allocOnStack(13);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string25.base, #t~string25.offset, 1);call write~init~int(80, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(117, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(109, #t~string25.base, 3 + #t~string25.offset, 1);call write~init~int(112, #t~string25.base, 4 + #t~string25.offset, 1);call write~init~int(58, #t~string25.base, 5 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 6 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string31.base, #t~string31.offset, 1);call write~init~int(32, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string33.base, #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 1 + #t~string33.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 851#L-1 havoc main_#res;havoc main_#t~ret36, main_~retValue_acc~6, main_~tmp~7;havoc main_~retValue_acc~6;havoc main_~tmp~7; 852#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 901#L75 main_#t~ret36 := valid_product_#res;main_~tmp~7 := main_#t~ret36;havoc main_#t~ret36; 913#L501 assume 0 != main_~tmp~7; 952#L478 havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 859#L91-1 [2021-07-06 20:31:34,666 INFO L793 eck$LassoCheckResult]: Loop: 859#L91-1 assume !false; 855#L125 assume test_~splverifierCounter~0 < 4; 856#L126 test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 970#L134 assume !(0 != test_~tmp~1); 850#L134-1 test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 868#L144 assume !(0 != test_~tmp___0~1); 861#L144-1 test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 862#L154 assume 0 != test_~tmp___2~0; 1030#L160-1 assume !(0 != ~pumpRunning~0); 916#L196 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret15, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 887#L254 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret14, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 888#L228-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret34, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 911#L598-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 912#L603-1 isHighWaterLevel_#t~ret34 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret34;havoc isHighWaterLevel_#t~ret34; 942#L374-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~2 := 0; 955#L374-5 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 937#L380-1 processEnvironment__wrappee__highWaterSensor_#t~ret14 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret14;havoc processEnvironment__wrappee__highWaterSensor_#t~ret14; 878#L232-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 879#L203 havoc __utac_acc__Specification4_spec__1_#t~ret8, __utac_acc__Specification4_spec__1_#t~ret9, __utac_acc__Specification4_spec__1_~tmp~0, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~0;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 1042#L590 __utac_acc__Specification4_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~0 := __utac_acc__Specification4_spec__1_#t~ret8;havoc __utac_acc__Specification4_spec__1_#t~ret8; 923#L91 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0); 859#L91-1 [2021-07-06 20:31:34,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:31:34,666 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-07-06 20:31:34,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:31:34,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145449805] [2021-07-06 20:31:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:31:34,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:31:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:31:34,710 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:31:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:31:34,737 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:31:34,744 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:31:34,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:31:34,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1765215488, now seen corresponding path program 1 times [2021-07-06 20:31:34,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:31:34,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892710639] [2021-07-06 20:31:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:31:34,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:31:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:31:34,755 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:31:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:31:34,767 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:31:34,770 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:31:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:31:34,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1309144294, now seen corresponding path program 1 times [2021-07-06 20:31:34,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:31:34,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329287840] [2021-07-06 20:31:34,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:31:34,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:31:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:31:34,824 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:31:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:31:34,856 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:31:34,870 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:31:34,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:31:34,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-07-06 20:32:16,499 WARN L205 SmtUtils]: Spent 41.47 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:32:16,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:32:16,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:32:37,318 WARN L205 SmtUtils]: Spent 20.74 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:32:37,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:32:37 BoogieIcfgContainer [2021-07-06 20:32:37,450 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:32:37,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:32:37,451 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:32:37,451 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:32:37,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:31:33" (3/4) ... [2021-07-06 20:32:37,454 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:32:37,504 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:32:37,506 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:32:37,507 INFO L168 Benchmark]: Toolchain (without parser) took 65598.82 ms. Allocated memory was 50.3 MB in the beginning and 88.1 MB in the end (delta: 37.7 MB). Free memory was 26.0 MB in the beginning and 33.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-07-06 20:32:37,508 INFO L168 Benchmark]: CDTParser took 1.68 ms. Allocated memory is still 50.3 MB. Free memory was 31.0 MB in the beginning and 30.9 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:32:37,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.47 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.8 MB in the beginning and 32.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-07-06 20:32:37,509 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.75 ms. Allocated memory is still 60.8 MB. Free memory was 32.4 MB in the beginning and 28.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:32:37,509 INFO L168 Benchmark]: Boogie Preprocessor took 81.33 ms. Allocated memory is still 60.8 MB. Free memory was 28.5 MB in the beginning and 40.9 MB in the end (delta: -12.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-07-06 20:32:37,510 INFO L168 Benchmark]: RCFGBuilder took 920.35 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 32.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:32:37,510 INFO L168 Benchmark]: BuchiAutomizer took 64072.11 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 32.2 MB in the beginning and 36.7 MB in the end (delta: -4.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 16.1 GB. [2021-07-06 20:32:37,511 INFO L168 Benchmark]: Witness Printer took 55.40 ms. Allocated memory is still 88.1 MB. Free memory was 36.7 MB in the beginning and 33.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:32:37,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.68 ms. Allocated memory is still 50.3 MB. Free memory was 31.0 MB in the beginning and 30.9 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.47 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.8 MB in the beginning and 32.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.75 ms. Allocated memory is still 60.8 MB. Free memory was 32.4 MB in the beginning and 28.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.33 ms. Allocated memory is still 60.8 MB. Free memory was 28.5 MB in the beginning and 40.9 MB in the end (delta: -12.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 920.35 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 32.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 64072.11 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 32.2 MB in the beginning and 36.7 MB in the end (delta: -4.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 16.1 GB. * Witness Printer took 55.40 ms. Allocated memory is still 88.1 MB. Free memory was 36.7 MB in the beginning and 33.8 MB in the end (delta: 2.9 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 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 207 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 64.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 63.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 52.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 123 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 207 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 358 SDtfs, 863 SDslu, 860 SDs, 0 SdLazy, 73 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 171.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 124]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=4640} State at position 1 is {NULL=0, NULL=0, NULL=4640, NULL=4667, NULL=0, NULL=4642, methaneLevelCritical=0, retValue_acc=0, NULL=0, NULL=4662, NULL=4647, NULL=0, tmp___1=0, NULL=4660, NULL=4666, NULL=0, cleanupTimeShifts=4, tmp=0, NULL=4658, NULL=0, NULL=0, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b093cc5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b8c3102=0, NULL=4668, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=4651, NULL=0, tmp=1, NULL=0, \result=1, NULL=0, tmp=1, NULL=0, NULL=0, NULL=4655, retValue_acc=1, NULL=0, NULL=0, NULL=0, tmp=1, tmp___0=0, NULL=4654, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@704e54f6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2761f5be=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a89870a=66, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20ac3aff=0, tmp=0, head=0, NULL=4644, NULL=0, NULL=0, NULL=0, retValue_acc=0, NULL=4663, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11868e94=0, tmp___0=0, NULL=0, NULL=0, NULL=4669, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a8df3ad=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2532d96a=0, tmp___0=0, NULL=4665, NULL=4645, tmp=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=4652, \result=1, \result=0, NULL=4641, \result=0, NULL=4664, NULL=0, NULL=4650, NULL=4648, NULL=4649, NULL=4643, retValue_acc=1, tmp___2=66, splverifierCounter=0, NULL=0, NULL=4653, NULL=4656, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d2fa90b=0, NULL=4661, NULL=4659, NULL=4657} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L189] int pumpRunning = 0; [L190] int systemActive = 1; [L419] int cleanupTimeShifts = 4; [L515] int waterLevel = 1; [L516] int methaneLevelCritical = 0; [L796] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L492] int retValue_acc ; [L493] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L499] tmp = valid_product() [L501] COND TRUE \read(tmp) [L115] int splverifierCounter ; [L116] int tmp ; [L117] int tmp___0 ; [L118] int tmp___1 ; [L119] int tmp___2 ; [L122] splverifierCounter = 0 Loop: [L124] COND TRUE 1 [L126] COND TRUE splverifierCounter < 4 [L132] tmp = __VERIFIER_nondet_int() [L134] COND FALSE !(\read(tmp)) [L142] tmp___0 = __VERIFIER_nondet_int() [L144] COND FALSE !(\read(tmp___0)) [L152] tmp___2 = __VERIFIER_nondet_int() [L154] COND TRUE \read(tmp___2) [L196] COND FALSE !(\read(pumpRunning)) [L203] COND TRUE \read(systemActive) [L251] int tmp ; [L254] COND FALSE !(\read(pumpRunning)) [L225] int tmp ; [L228] COND TRUE ! pumpRunning [L366] int retValue_acc ; [L367] int tmp ; [L368] int tmp___0 ; [L595] int retValue_acc ; [L598] COND TRUE waterLevel < 2 [L599] retValue_acc = 1 [L600] return (retValue_acc); [L372] tmp = isHighWaterSensorDry() [L374] COND TRUE \read(tmp) [L375] tmp___0 = 0 [L379] retValue_acc = tmp___0 [L380] return (retValue_acc); [L230] tmp = isHighWaterLevel() [L232] COND FALSE !(\read(tmp)) [L84] int tmp ; [L85] int tmp___0 ; [L586] int retValue_acc ; [L589] retValue_acc = waterLevel [L590] return (retValue_acc); [L89] tmp = getWaterLevel() [L91] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:32:37,580 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...