./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer --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 dbf7149ba5f2c2b45723d578c2ed612c4c7ff3d9 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-29 19:39:17,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:39:17,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:39:17,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:39:17,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:39:17,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:39:17,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:39:17,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:39:17,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:39:17,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:39:17,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:39:17,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:39:17,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:39:17,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:39:17,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:39:17,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:39:17,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:39:17,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:39:17,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:39:17,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:39:17,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:39:17,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:39:17,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:39:17,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:39:17,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:39:17,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:39:17,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:39:17,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:39:17,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:39:17,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:39:17,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:39:17,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:39:17,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:39:17,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:39:17,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:39:17,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:39:17,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:39:17,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:39:17,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:39:17,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:39:17,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:39:17,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 19:39:17,581 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:39:17,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:39:17,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:39:17,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:39:17,584 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:39:17,585 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:39:17,585 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:39:17,585 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:39:17,586 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:39:17,586 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:39:17,588 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:39:17,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:39:17,588 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:39:17,589 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:39:17,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:39:17,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:39:17,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:39:17,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:39:17,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:39:17,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:39:17,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:39:17,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:39:17,591 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:39:17,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:39:17,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:39:17,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:39:17,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:39:17,593 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:39:17,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:39:17,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:39:17,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:39:17,594 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:39:17,596 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:39:17,596 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:/tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbf7149ba5f2c2b45723d578c2ed612c4c7ff3d9 [2020-11-29 19:39:18,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:39:18,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:39:18,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:39:18,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:39:18,086 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:39:18,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c [2020-11-29 19:39:18,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/data/e609aa995/e0d70fb191a046609888ec47d9b8df46/FLAGa828ce692 [2020-11-29 19:39:18,984 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:39:18,985 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c [2020-11-29 19:39:19,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/data/e609aa995/e0d70fb191a046609888ec47d9b8df46/FLAGa828ce692 [2020-11-29 19:39:19,221 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/data/e609aa995/e0d70fb191a046609888ec47d9b8df46 [2020-11-29 19:39:19,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:39:19,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:39:19,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:39:19,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:39:19,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:39:19,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:39:19" (1/1) ... [2020-11-29 19:39:19,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321876a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:19, skipping insertion in model container [2020-11-29 19:39:19,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:39:19" (1/1) ... [2020-11-29 19:39:19,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:39:19,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:39:19,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:39:19,857 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:39:20,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:39:20,073 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:39:20,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:20 WrapperNode [2020-11-29 19:39:20,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:39:20,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:39:20,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:39:20,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:39:20,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:20" (1/1) ... [2020-11-29 19:39:20,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:20" (1/1) ... [2020-11-29 19:39:20,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:39:20,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:39:20,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:39:20,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:39:20,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:20" (1/1) ... [2020-11-29 19:39:20,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:20" (1/1) ... [2020-11-29 19:39:20,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:20" (1/1) ... [2020-11-29 19:39:20,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:20" (1/1) ... [2020-11-29 19:39:20,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:20" (1/1) ... [2020-11-29 19:39:20,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:20" (1/1) ... [2020-11-29 19:39:20,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:20" (1/1) ... [2020-11-29 19:39:20,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:39:20,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:39:20,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:39:20,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:39:20,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:39:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:39:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:39:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:39:20,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:39:22,302 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:39:22,304 INFO L298 CfgBuilder]: Removed 286 assume(true) statements. [2020-11-29 19:39:22,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:22 BoogieIcfgContainer [2020-11-29 19:39:22,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:39:22,310 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:39:22,310 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:39:22,314 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:39:22,315 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:39:22,316 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:39:19" (1/3) ... [2020-11-29 19:39:22,318 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f3d9c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:39:22, skipping insertion in model container [2020-11-29 19:39:22,318 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:39:22,319 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:20" (2/3) ... [2020-11-29 19:39:22,320 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f3d9c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:39:22, skipping insertion in model container [2020-11-29 19:39:22,320 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:39:22,320 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:22" (3/3) ... [2020-11-29 19:39:22,323 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2020-11-29 19:39:22,396 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:39:22,397 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:39:22,397 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:39:22,397 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:39:22,397 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:39:22,397 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:39:22,397 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:39:22,398 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:39:22,431 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 191 states. [2020-11-29 19:39:22,497 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2020-11-29 19:39:22,498 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:22,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:22,511 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:39:22,511 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:22,511 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:39:22,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 191 states. [2020-11-29 19:39:22,529 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2020-11-29 19:39:22,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:22,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:22,537 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:39:22,537 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:22,544 INFO L794 eck$LassoCheckResult]: Stem: 153#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.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;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 11#L-1true havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~10, main_~tmp~6;havoc main_~retValue_acc~10;havoc main_~tmp~6; 56#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; 79#L75true main_#t~ret44 := valid_product_#res;main_~tmp~6 := main_#t~ret44;havoc main_#t~ret44; 78#L595true assume 0 != main_~tmp~6; 178#L572true havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 80#L617-1true [2020-11-29 19:39:22,545 INFO L796 eck$LassoCheckResult]: Loop: 80#L617-1true assume !false; 177#L96true assume test_~splverifierCounter~0 < 4; 83#L97true test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 73#L105true assume !(0 != test_~tmp~0); 69#L105-1true test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 173#L115true assume !(0 != test_~tmp___0~0); 170#L115-1true test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 23#L125true assume 0 != test_~tmp___2~0; 13#L131-1true assume !(0 != ~pumpRunning~0); 25#L169true assume !(0 != ~systemActive~0); 134#L176true havoc __utac_acc__Specification1_spec__1_#t~ret45, __utac_acc__Specification1_spec__1_#t~ret46, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 55#L444-1true __utac_acc__Specification1_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret45;havoc __utac_acc__Specification1_spec__1_#t~ret45; 76#L617true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 80#L617-1true [2020-11-29 19:39:22,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:22,556 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 19:39:22,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:22,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212774806] [2020-11-29 19:39:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:22,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:23,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:23,165 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:23,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:23,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1667892531, now seen corresponding path program 1 times [2020-11-29 19:39:23,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:23,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831911092] [2020-11-29 19:39:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:23,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:23,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:23,223 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:23,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:23,225 INFO L82 PathProgramCache]: Analyzing trace with hash 46386407, now seen corresponding path program 1 times [2020-11-29 19:39:23,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:23,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127139040] [2020-11-29 19:39:23,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:23,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127139040] [2020-11-29 19:39:23,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:23,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:39:23,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603210506] [2020-11-29 19:39:23,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:39:23,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:39:23,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:39:23,624 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 6 states. [2020-11-29 19:39:24,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:24,144 INFO L93 Difference]: Finished difference Result 420 states and 618 transitions. [2020-11-29 19:39:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:39:24,147 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 420 states and 618 transitions. [2020-11-29 19:39:24,155 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 273 [2020-11-29 19:39:24,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 420 states to 399 states and 597 transitions. [2020-11-29 19:39:24,168 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 399 [2020-11-29 19:39:24,171 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 399 [2020-11-29 19:39:24,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 399 states and 597 transitions. [2020-11-29 19:39:24,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:39:24,183 INFO L691 BuchiCegarLoop]: Abstraction has 399 states and 597 transitions. [2020-11-29 19:39:24,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states and 597 transitions. [2020-11-29 19:39:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 222. [2020-11-29 19:39:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-11-29 19:39:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 330 transitions. [2020-11-29 19:39:24,254 INFO L714 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2020-11-29 19:39:24,254 INFO L594 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2020-11-29 19:39:24,254 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:39:24,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 222 states and 330 transitions. [2020-11-29 19:39:24,277 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2020-11-29 19:39:24,278 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:24,278 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:24,280 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:39:24,281 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:24,281 INFO L794 eck$LassoCheckResult]: Stem: 796#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.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;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 643#L-1 havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~10, main_~tmp~6;havoc main_~retValue_acc~10;havoc main_~tmp~6; 644#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; 712#L75 main_#t~ret44 := valid_product_#res;main_~tmp~6 := main_#t~ret44;havoc main_#t~ret44; 734#L595 assume 0 != main_~tmp~6; 735#L572 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 634#L617-1 [2020-11-29 19:39:24,282 INFO L796 eck$LassoCheckResult]: Loop: 634#L617-1 assume !false; 736#L96 assume test_~splverifierCounter~0 < 4; 738#L97 test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 729#L105 assume !(0 != test_~tmp~0); 723#L105-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 726#L115 assume !(0 != test_~tmp___0~0); 653#L115-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 659#L125 assume 0 != test_~tmp___2~0; 645#L131-1 assume !(0 != ~pumpRunning~0); 647#L169 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret14, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 662#L253 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret13, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 676#L227-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 678#L201-3 assume !(0 == ~pumpRunning~0); 667#L176 havoc __utac_acc__Specification1_spec__1_#t~ret45, __utac_acc__Specification1_spec__1_#t~ret46, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 710#L444-1 __utac_acc__Specification1_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret45;havoc __utac_acc__Specification1_spec__1_#t~ret45; 711#L617 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 634#L617-1 [2020-11-29 19:39:24,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:24,285 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 19:39:24,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:24,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754693891] [2020-11-29 19:39:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:24,387 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:24,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:24,508 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:24,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:24,516 INFO L82 PathProgramCache]: Analyzing trace with hash -2101003016, now seen corresponding path program 1 times [2020-11-29 19:39:24,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:24,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085510899] [2020-11-29 19:39:24,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:24,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085510899] [2020-11-29 19:39:24,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:24,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:39:24,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052038394] [2020-11-29 19:39:24,547 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:39:24,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:39:24,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:39:24,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:39:24,548 INFO L87 Difference]: Start difference. First operand 222 states and 330 transitions. cyclomatic complexity: 111 Second operand 3 states. [2020-11-29 19:39:24,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:24,715 INFO L93 Difference]: Finished difference Result 225 states and 310 transitions. [2020-11-29 19:39:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:39:24,716 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 225 states and 310 transitions. [2020-11-29 19:39:24,719 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 158 [2020-11-29 19:39:24,723 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 225 states to 225 states and 310 transitions. [2020-11-29 19:39:24,723 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 225 [2020-11-29 19:39:24,724 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 225 [2020-11-29 19:39:24,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 225 states and 310 transitions. [2020-11-29 19:39:24,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:39:24,726 INFO L691 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2020-11-29 19:39:24,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states and 310 transitions. [2020-11-29 19:39:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2020-11-29 19:39:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-11-29 19:39:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 310 transitions. [2020-11-29 19:39:24,742 INFO L714 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2020-11-29 19:39:24,742 INFO L594 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2020-11-29 19:39:24,742 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:39:24,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 225 states and 310 transitions. [2020-11-29 19:39:24,745 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 158 [2020-11-29 19:39:24,745 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:24,745 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:24,749 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:39:24,749 INFO L853 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] [2020-11-29 19:39:24,749 INFO L794 eck$LassoCheckResult]: Stem: 1225#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.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;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1096#L-1 havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~10, main_~tmp~6;havoc main_~retValue_acc~10;havoc main_~tmp~6; 1097#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; 1158#L75 main_#t~ret44 := valid_product_#res;main_~tmp~6 := main_#t~ret44;havoc main_#t~ret44; 1177#L595 assume 0 != main_~tmp~6; 1178#L572 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1089#L617-1 [2020-11-29 19:39:24,751 INFO L796 eck$LassoCheckResult]: Loop: 1089#L617-1 assume !false; 1241#L96 assume test_~splverifierCounter~0 < 4; 1242#L97 test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 1292#L105 assume !(0 != test_~tmp~0); 1290#L105-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 1289#L115 assume !(0 != test_~tmp___0~0); 1236#L115-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 1237#L125 assume 0 != test_~tmp___2~0; 1098#L131-1 assume !(0 != ~pumpRunning~0); 1099#L169 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret14, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1114#L253 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret13, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 1127#L227-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1128#L201-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1195#L484-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1238#L489-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 1211#L355-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1192#L355-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 1186#L361-3 processEnvironment__wrappee__highWaterSensor_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret12;havoc processEnvironment__wrappee__highWaterSensor_#t~ret12; 1118#L205-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1120#L176 havoc __utac_acc__Specification1_spec__1_#t~ret45, __utac_acc__Specification1_spec__1_#t~ret46, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1156#L444-1 __utac_acc__Specification1_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret45;havoc __utac_acc__Specification1_spec__1_#t~ret45; 1157#L617 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 1089#L617-1 [2020-11-29 19:39:24,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:24,752 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 19:39:24,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:24,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081745071] [2020-11-29 19:39:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:24,846 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:24,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:24,982 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:24,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2033396644, now seen corresponding path program 1 times [2020-11-29 19:39:24,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:24,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11511584] [2020-11-29 19:39:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:24,999 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:25,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:25,008 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:25,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:25,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1008265526, now seen corresponding path program 1 times [2020-11-29 19:39:25,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:25,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671024401] [2020-11-29 19:39:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:25,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:25,108 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:25,135 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:25,292 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-11-29 19:41:02,809 WARN L193 SmtUtils]: Spent 1.62 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 19:42:10,158 WARN L193 SmtUtils]: Spent 1.12 m on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 19:42:10,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:42:10 BoogieIcfgContainer [2020-11-29 19:42:10,556 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:42:10,557 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:42:10,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:42:10,558 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:42:10,558 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:22" (3/4) ... [2020-11-29 19:42:10,561 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 19:42:10,617 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d0e4c18a-bfa0-4a86-8cc5-2ba22896f39c/bin/uautomizer/witness.graphml [2020-11-29 19:42:10,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:42:10,618 INFO L168 Benchmark]: Toolchain (without parser) took 171385.45 ms. Allocated memory was 86.0 MB in the beginning and 161.5 MB in the end (delta: 75.5 MB). Free memory was 53.4 MB in the beginning and 98.5 MB in the end (delta: -45.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:10,619 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 86.0 MB. Free memory was 44.9 MB in the beginning and 44.8 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:42:10,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 835.93 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 53.2 MB in the beginning and 72.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:10,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 132.29 ms. Allocated memory is still 107.0 MB. Free memory was 72.7 MB in the beginning and 68.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:10,627 INFO L168 Benchmark]: Boogie Preprocessor took 111.23 ms. Allocated memory is still 107.0 MB. Free memory was 68.1 MB in the beginning and 64.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:10,628 INFO L168 Benchmark]: RCFGBuilder took 1988.38 ms. Allocated memory is still 107.0 MB. Free memory was 64.4 MB in the beginning and 75.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:10,629 INFO L168 Benchmark]: BuchiAutomizer took 168246.78 ms. Allocated memory was 107.0 MB in the beginning and 161.5 MB in the end (delta: 54.5 MB). Free memory was 75.2 MB in the beginning and 100.6 MB in the end (delta: -25.4 MB). Peak memory consumption was 96.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:10,629 INFO L168 Benchmark]: Witness Printer took 60.00 ms. Allocated memory is still 161.5 MB. Free memory was 100.6 MB in the beginning and 98.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:42:10,633 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 86.0 MB. Free memory was 44.9 MB in the beginning and 44.8 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 835.93 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 53.2 MB in the beginning and 72.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 132.29 ms. Allocated memory is still 107.0 MB. Free memory was 72.7 MB in the beginning and 68.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 111.23 ms. Allocated memory is still 107.0 MB. Free memory was 68.1 MB in the beginning and 64.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1988.38 ms. Allocated memory is still 107.0 MB. Free memory was 64.4 MB in the beginning and 75.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 168246.78 ms. Allocated memory was 107.0 MB in the beginning and 161.5 MB in the end (delta: 54.5 MB). Free memory was 75.2 MB in the beginning and 100.6 MB in the end (delta: -25.4 MB). Peak memory consumption was 96.4 MB. Max. memory is 16.1 GB. * Witness Printer took 60.00 ms. Allocated memory is still 161.5 MB. Free memory was 100.6 MB in the beginning and 98.5 MB in the end (delta: 2.1 MB). There was no memory consumed. 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 225 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 168.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 167.0s. Construction of modules took 0.4s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 177 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 225 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 477 SDtfs, 1215 SDslu, 1130 SDs, 0 SdLazy, 85 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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: 95]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31127} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@35634d7d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e2294c9=0, NULL=31127, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b741440=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70cfa64c=0, NULL=0, NULL=31128, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a3429da=0, retValue_acc=0, NULL=0, NULL=31147, NULL=0, tmp___1=0, NULL=31132, NULL=31151, NULL=0, NULL=31141, cleanupTimeShifts=4, tmp=0, NULL=31156, NULL=0, NULL=0, waterLevel=1, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=31137, tmp=0, NULL=0, NULL=0, tmp=1, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=31142, NULL=0, NULL=0, NULL=0, NULL=31154, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@498cb45b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23bb3751=0, tmp=0, head=0, NULL=31133, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75403bb3=0, NULL=0, NULL=31140, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@733295bb=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@326d2c3c=74, tmp=0, NULL=31143, tmp___0=0, NULL=0, NULL=0, NULL=31130, NULL=31148, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a9907a2=0, NULL=0, tmp=0, NULL=31150, NULL=31149, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=31155, retValue_acc=0, \result=0, retValue_acc=0, NULL=31146, \result=0, NULL=31145, NULL=0, NULL=31131, NULL=31134, NULL=0, NULL=31152, NULL=31144, NULL=31157, retValue_acc=1, tmp___2=74, splverifierCounter=0, NULL=0, \result=0, NULL=31136, NULL=31153, NULL=31129, NULL=31135} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L161] int pumpRunning = 0; [L162] int systemActive = 1; [L401] int waterLevel = 1; [L402] int methaneLevelCritical = 0; [L513] int cleanupTimeShifts = 4; [L804] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L586] int retValue_acc ; [L587] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L593] tmp = valid_product() [L595] COND TRUE \read(tmp) [L86] int splverifierCounter ; [L87] int tmp ; [L88] int tmp___0 ; [L89] int tmp___1 ; [L90] int tmp___2 ; [L93] splverifierCounter = 0 Loop: [L95] COND TRUE 1 [L97] COND TRUE splverifierCounter < 4 [L103] tmp = __VERIFIER_nondet_int() [L105] COND FALSE !(\read(tmp)) [L113] tmp___0 = __VERIFIER_nondet_int() [L115] COND FALSE !(\read(tmp___0)) [L123] tmp___2 = __VERIFIER_nondet_int() [L125] COND TRUE \read(tmp___2) [L169] COND FALSE !(\read(pumpRunning)) [L176] COND TRUE \read(systemActive) [L250] int tmp ; [L253] COND FALSE !(\read(pumpRunning)) [L224] int tmp ; [L227] COND FALSE !(\read(pumpRunning)) [L198] int tmp ; [L201] COND TRUE ! pumpRunning [L347] int retValue_acc ; [L348] int tmp ; [L349] int tmp___0 ; [L481] int retValue_acc ; [L484] COND TRUE waterLevel < 2 [L485] retValue_acc = 1 [L486] return (retValue_acc); [L353] tmp = isHighWaterSensorDry() [L355] COND TRUE \read(tmp) [L356] tmp___0 = 0 [L360] retValue_acc = tmp___0 [L361] return (retValue_acc); [L203] tmp = isHighWaterLevel() [L205] COND FALSE !(\read(tmp)) [L610] int tmp ; [L611] int tmp___0 ; [L440] int retValue_acc ; [L443] retValue_acc = methaneLevelCritical [L444] return (retValue_acc); [L615] tmp = isMethaneLevelCritical() [L617] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...