./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product56.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_a996bb63-b71b-4fcc-83d7-4ce2a0585650/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/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 df93fd989d6774382f7bc06f2f37e13403a51d4e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:58:57,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:58:57,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:58:57,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:58:57,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:58:57,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:58:57,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:58:57,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:58:57,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:58:57,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:58:57,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:58:57,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:58:57,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:58:57,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:58:57,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:58:57,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:58:57,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:58:57,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:58:57,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:58:57,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:58:57,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:58:57,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:58:57,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:58:57,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:58:57,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:58:57,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:58:57,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:58:57,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:58:57,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:58:57,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:58:57,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:58:57,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:58:57,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:58:57,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:58:57,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:58:57,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:58:57,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:58:57,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:58:57,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:58:57,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:58:57,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:58:57,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 23:58:57,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:58:57,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:58:57,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:58:57,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:58:57,223 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:58:57,223 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:58:57,224 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:58:57,224 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:58:57,224 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:58:57,224 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:58:57,224 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:58:57,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:58:57,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:58:57,225 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:58:57,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:58:57,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:58:57,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:58:57,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:58:57,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:58:57,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:58:57,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:58:57,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:58:57,227 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:58:57,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:58:57,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:58:57,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:58:57,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:58:57,228 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:58:57,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:58:57,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:58:57,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:58:57,229 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:58:57,230 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:58:57,230 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_a996bb63-b71b-4fcc-83d7-4ce2a0585650/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df93fd989d6774382f7bc06f2f37e13403a51d4e [2020-11-29 23:58:57,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:58:57,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:58:57,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:58:57,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:58:57,547 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:58:57,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c [2020-11-29 23:58:57,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/bin/uautomizer/data/259f8516b/e0f989292bed4c6eab0250a329223570/FLAGb897abc37 [2020-11-29 23:58:58,262 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:58:58,263 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c [2020-11-29 23:58:58,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/bin/uautomizer/data/259f8516b/e0f989292bed4c6eab0250a329223570/FLAGb897abc37 [2020-11-29 23:58:58,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/bin/uautomizer/data/259f8516b/e0f989292bed4c6eab0250a329223570 [2020-11-29 23:58:58,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:58:58,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:58:58,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:58,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:58:58,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:58:58,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:58" (1/1) ... [2020-11-29 23:58:58,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6e435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:58, skipping insertion in model container [2020-11-29 23:58:58,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:58" (1/1) ... [2020-11-29 23:58:58,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:58:58,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:58:59,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:59,149 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:58:59,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:59,305 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:58:59,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:59 WrapperNode [2020-11-29 23:58:59,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:59,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:59,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:58:59,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:58:59,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:59" (1/1) ... [2020-11-29 23:58:59,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:59" (1/1) ... [2020-11-29 23:58:59,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:59,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:58:59,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:58:59,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:58:59,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:59" (1/1) ... [2020-11-29 23:58:59,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:59" (1/1) ... [2020-11-29 23:58:59,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:59" (1/1) ... [2020-11-29 23:58:59,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:59" (1/1) ... [2020-11-29 23:58:59,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:59" (1/1) ... [2020-11-29 23:58:59,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:59" (1/1) ... [2020-11-29 23:58:59,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:59" (1/1) ... [2020-11-29 23:58:59,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:58:59,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:58:59,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:58:59,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:58:59,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/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 23:58:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:58:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:58:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:58:59,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:59:01,347 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:59:01,348 INFO L298 CfgBuilder]: Removed 294 assume(true) statements. [2020-11-29 23:59:01,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:59:01 BoogieIcfgContainer [2020-11-29 23:59:01,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:59:01,351 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:59:01,352 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:59:01,357 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:59:01,358 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:59:01,358 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:58:58" (1/3) ... [2020-11-29 23:59:01,360 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b6c1960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:59:01, skipping insertion in model container [2020-11-29 23:59:01,360 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:59:01,360 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:59" (2/3) ... [2020-11-29 23:59:01,361 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b6c1960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:59:01, skipping insertion in model container [2020-11-29 23:59:01,362 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:59:01,362 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:59:01" (3/3) ... [2020-11-29 23:59:01,364 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product56.cil.c [2020-11-29 23:59:01,434 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:59:01,434 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:59:01,434 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:59:01,434 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:59:01,434 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:59:01,435 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:59:01,435 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:59:01,435 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:59:01,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 197 states. [2020-11-29 23:59:01,507 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2020-11-29 23:59:01,507 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:59:01,508 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:59:01,517 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:59:01,517 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:01,517 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:59:01,517 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 197 states. [2020-11-29 23:59:01,530 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2020-11-29 23:59:01,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:59:01,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:59:01,532 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:59:01,532 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:01,537 INFO L794 eck$LassoCheckResult]: Stem: 93#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string50.base, #t~string50.offset, 1);call write~init~int(77, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(101, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(116, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(104, #t~string50.base, 4 + #t~string50.offset, 1);call write~init~int(58, #t~string50.base, 5 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 6 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string52.base, #t~string52.offset, 1);call write~init~int(82, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(73, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(84, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 4 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(75, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string56.base, #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 1 + #t~string56.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 14#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 86#L534true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 193#L542true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 109#L132true assume 0 != main_~tmp~0; 149#L105true havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 11#L566-1true [2020-11-29 23:59:01,538 INFO L796 eck$LassoCheckResult]: Loop: 11#L566-1true assume !false; 142#L953true assume test_~splverifierCounter~0 < 4; 129#L954true test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 17#L962true assume !(0 != test_~tmp~10); 19#L962-1true test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 164#L972true assume !(0 != test_~tmp___0~3); 167#L972-1true test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 197#L982true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 119#L990-1true assume !(0 != ~pumpRunning~0); 30#L703true assume !(0 != ~systemActive~0); 103#L710true havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;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; 6#L632-1true __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 23#L560true assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 11#L566-1true [2020-11-29 23:59:01,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:01,547 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 23:59:01,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:01,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39174440] [2020-11-29 23:59:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:01,893 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:02,105 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:02,174 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:59:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:02,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1666938241, now seen corresponding path program 1 times [2020-11-29 23:59:02,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:02,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119036943] [2020-11-29 23:59:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:02,274 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 23:59:02,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119036943] [2020-11-29 23:59:02,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:59:02,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:59:02,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505139322] [2020-11-29 23:59:02,288 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:59:02,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:59:02,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:59:02,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:59:02,314 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2020-11-29 23:59:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:02,468 INFO L93 Difference]: Finished difference Result 382 states and 570 transitions. [2020-11-29 23:59:02,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:59:02,471 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 382 states and 570 transitions. [2020-11-29 23:59:02,491 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 250 [2020-11-29 23:59:02,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 382 states to 368 states and 555 transitions. [2020-11-29 23:59:02,515 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 368 [2020-11-29 23:59:02,521 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 368 [2020-11-29 23:59:02,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 368 states and 555 transitions. [2020-11-29 23:59:02,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:59:02,532 INFO L691 BuchiCegarLoop]: Abstraction has 368 states and 555 transitions. [2020-11-29 23:59:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states and 555 transitions. [2020-11-29 23:59:02,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 366. [2020-11-29 23:59:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-11-29 23:59:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 552 transitions. [2020-11-29 23:59:02,619 INFO L714 BuchiCegarLoop]: Abstraction has 366 states and 552 transitions. [2020-11-29 23:59:02,619 INFO L594 BuchiCegarLoop]: Abstraction has 366 states and 552 transitions. [2020-11-29 23:59:02,619 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:59:02,620 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 366 states and 552 transitions. [2020-11-29 23:59:02,625 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 248 [2020-11-29 23:59:02,629 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:59:02,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:59:02,632 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:59:02,633 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 23:59:02,633 INFO L794 eck$LassoCheckResult]: Stem: 770#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string50.base, #t~string50.offset, 1);call write~init~int(77, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(101, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(116, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(104, #t~string50.base, 4 + #t~string50.offset, 1);call write~init~int(58, #t~string50.base, 5 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 6 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string52.base, #t~string52.offset, 1);call write~init~int(82, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(73, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(84, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 4 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(75, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string56.base, #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 1 + #t~string56.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 615#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 616#L534 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 765#L542 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 769#L132 assume 0 != main_~tmp~0; 694#L105 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 604#L566-1 [2020-11-29 23:59:02,634 INFO L796 eck$LassoCheckResult]: Loop: 604#L566-1 assume !false; 608#L953 assume test_~splverifierCounter~0 < 4; 623#L954 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 624#L962 assume !(0 != test_~tmp~10); 636#L962-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 643#L972 assume !(0 != test_~tmp___0~3); 730#L972-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 732#L982 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 781#L990-1 assume !(0 != ~pumpRunning~0); 842#L703 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 836#L787 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret58, processEnvironment__wrappee__lowWaterSensor_~tmp~6;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6; 830#L761-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret57, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 812#L735-3 assume !(0 == ~pumpRunning~0); 776#L710 havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;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; 597#L632-1 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 598#L560 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 604#L566-1 [2020-11-29 23:59:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:02,639 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 23:59:02,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:02,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914370313] [2020-11-29 23:59:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:02,731 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:02,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:02,825 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:59:02,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:02,826 INFO L82 PathProgramCache]: Analyzing trace with hash 558894441, now seen corresponding path program 1 times [2020-11-29 23:59:02,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:02,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288602183] [2020-11-29 23:59:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:02,859 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 23:59:02,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288602183] [2020-11-29 23:59:02,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:59:02,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:59:02,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650537322] [2020-11-29 23:59:02,861 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:59:02,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:59:02,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:59:02,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:59:02,863 INFO L87 Difference]: Start difference. First operand 366 states and 552 transitions. cyclomatic complexity: 189 Second operand 3 states. [2020-11-29 23:59:03,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:03,082 INFO L93 Difference]: Finished difference Result 389 states and 550 transitions. [2020-11-29 23:59:03,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:59:03,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 389 states and 550 transitions. [2020-11-29 23:59:03,089 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 271 [2020-11-29 23:59:03,097 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 389 states to 389 states and 550 transitions. [2020-11-29 23:59:03,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 389 [2020-11-29 23:59:03,100 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 389 [2020-11-29 23:59:03,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 389 states and 550 transitions. [2020-11-29 23:59:03,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:59:03,103 INFO L691 BuchiCegarLoop]: Abstraction has 389 states and 550 transitions. [2020-11-29 23:59:03,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states and 550 transitions. [2020-11-29 23:59:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2020-11-29 23:59:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-11-29 23:59:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 550 transitions. [2020-11-29 23:59:03,144 INFO L714 BuchiCegarLoop]: Abstraction has 389 states and 550 transitions. [2020-11-29 23:59:03,144 INFO L594 BuchiCegarLoop]: Abstraction has 389 states and 550 transitions. [2020-11-29 23:59:03,144 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:59:03,145 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 389 states and 550 transitions. [2020-11-29 23:59:03,171 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 271 [2020-11-29 23:59:03,171 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:59:03,171 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:59:03,173 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:59:03,173 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 23:59:03,173 INFO L794 eck$LassoCheckResult]: Stem: 1516#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string50.base, #t~string50.offset, 1);call write~init~int(77, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(101, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(116, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(104, #t~string50.base, 4 + #t~string50.offset, 1);call write~init~int(58, #t~string50.base, 5 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 6 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string52.base, #t~string52.offset, 1);call write~init~int(82, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(73, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(84, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 4 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(75, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string56.base, #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 1 + #t~string56.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1370#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1371#L534 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 1511#L542 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1515#L132 assume 0 != main_~tmp~0; 1449#L105 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1450#L566-1 [2020-11-29 23:59:03,174 INFO L796 eck$LassoCheckResult]: Loop: 1450#L566-1 assume !false; 1612#L953 assume test_~splverifierCounter~0 < 4; 1611#L954 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 1551#L962 assume !(0 != test_~tmp~10); 1550#L962-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 1544#L972 assume !(0 != test_~tmp___0~3); 1540#L972-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 1536#L982 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1533#L990-1 assume !(0 != ~pumpRunning~0); 1422#L703 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 1423#L787 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret58, processEnvironment__wrappee__lowWaterSensor_~tmp~6;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6; 1390#L761-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret57, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 1391#L735-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret77, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1497#L672-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1600#L677-3 isHighWaterLevel_#t~ret77 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret77;havoc isHighWaterLevel_#t~ret77; 1597#L889-9 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 1593#L889-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1590#L895-3 processEnvironment__wrappee__highWaterSensor_#t~ret57 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~5 := processEnvironment__wrappee__highWaterSensor_#t~ret57;havoc processEnvironment__wrappee__highWaterSensor_#t~ret57; 1586#L739-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5); 1418#L710 havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;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; 1356#L632-1 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 1357#L560 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 1450#L566-1 [2020-11-29 23:59:03,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:03,174 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 23:59:03,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:03,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032415809] [2020-11-29 23:59:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:03,276 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:03,364 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:03,383 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:59:03,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:03,384 INFO L82 PathProgramCache]: Analyzing trace with hash 222495861, now seen corresponding path program 1 times [2020-11-29 23:59:03,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:03,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153543407] [2020-11-29 23:59:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:03,393 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:03,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:03,406 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:59:03,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:03,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1475800987, now seen corresponding path program 1 times [2020-11-29 23:59:03,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:03,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222910909] [2020-11-29 23:59:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:03,491 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 23:59:03,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222910909] [2020-11-29 23:59:03,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:59:03,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:59:03,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823413486] [2020-11-29 23:59:03,770 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-11-29 23:59:03,911 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-11-29 23:59:03,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:59:03,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:59:03,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:59:03,934 INFO L87 Difference]: Start difference. First operand 389 states and 550 transitions. cyclomatic complexity: 164 Second operand 5 states. [2020-11-29 23:59:04,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:04,199 INFO L93 Difference]: Finished difference Result 1302 states and 1843 transitions. [2020-11-29 23:59:04,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:59:04,200 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1302 states and 1843 transitions. [2020-11-29 23:59:04,216 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 962 [2020-11-29 23:59:04,230 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1302 states to 1302 states and 1843 transitions. [2020-11-29 23:59:04,231 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1302 [2020-11-29 23:59:04,233 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1302 [2020-11-29 23:59:04,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1302 states and 1843 transitions. [2020-11-29 23:59:04,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:59:04,237 INFO L691 BuchiCegarLoop]: Abstraction has 1302 states and 1843 transitions. [2020-11-29 23:59:04,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states and 1843 transitions. [2020-11-29 23:59:04,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 772. [2020-11-29 23:59:04,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2020-11-29 23:59:04,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1078 transitions. [2020-11-29 23:59:04,280 INFO L714 BuchiCegarLoop]: Abstraction has 772 states and 1078 transitions. [2020-11-29 23:59:04,280 INFO L594 BuchiCegarLoop]: Abstraction has 772 states and 1078 transitions. [2020-11-29 23:59:04,280 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 23:59:04,281 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 772 states and 1078 transitions. [2020-11-29 23:59:04,287 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 542 [2020-11-29 23:59:04,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:59:04,288 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:59:04,290 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:59:04,290 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, 1, 1] [2020-11-29 23:59:04,291 INFO L794 eck$LassoCheckResult]: Stem: 3226#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string50.base, #t~string50.offset, 1);call write~init~int(77, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(101, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(116, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(104, #t~string50.base, 4 + #t~string50.offset, 1);call write~init~int(58, #t~string50.base, 5 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 6 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string52.base, #t~string52.offset, 1);call write~init~int(82, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(73, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(84, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 4 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(75, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string56.base, #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 1 + #t~string56.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 3079#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 3080#L534 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 3221#L542 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 3225#L132 assume 0 != main_~tmp~0; 3159#L105 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3160#L566-1 [2020-11-29 23:59:04,292 INFO L796 eck$LassoCheckResult]: Loop: 3160#L566-1 assume !false; 3481#L953 assume test_~splverifierCounter~0 < 4; 3478#L954 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 3476#L962 assume !(0 != test_~tmp~10); 3472#L962-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 3471#L972 assume !(0 != test_~tmp___0~3); 3454#L972-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 3453#L982 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 3239#L990-1 assume !(0 != ~pumpRunning~0); 3445#L703 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 3446#L787 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret58, processEnvironment__wrappee__lowWaterSensor_~tmp~6;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6; 3439#L761-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret57, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 3442#L735-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret77, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 3440#L672-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 3437#L677-3 isHighWaterLevel_#t~ret77 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret77;havoc isHighWaterLevel_#t~ret77; 3435#L889-9 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 3433#L889-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 3431#L895-3 processEnvironment__wrappee__highWaterSensor_#t~ret57 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~5 := processEnvironment__wrappee__highWaterSensor_#t~ret57;havoc processEnvironment__wrappee__highWaterSensor_#t~ret57; 3409#L739-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5); 3410#L710 havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;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; 3491#L632-1 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 3490#L560 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~4);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 3489#L664 __utac_acc__Specification3_spec__1_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 3486#L566 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 3160#L566-1 [2020-11-29 23:59:04,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:04,293 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-29 23:59:04,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:04,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53558714] [2020-11-29 23:59:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:04,360 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:04,400 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:04,416 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:59:04,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:04,417 INFO L82 PathProgramCache]: Analyzing trace with hash -929830743, now seen corresponding path program 1 times [2020-11-29 23:59:04,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:04,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861812519] [2020-11-29 23:59:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:04,429 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:04,439 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:04,450 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:59:04,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:04,453 INFO L82 PathProgramCache]: Analyzing trace with hash 905552463, now seen corresponding path program 1 times [2020-11-29 23:59:04,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:04,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769930502] [2020-11-29 23:59:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:04,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:04,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:04,606 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:59:04,830 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-11-30 00:00:41,952 WARN L193 SmtUtils]: Spent 1.62 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-30 00:01:49,790 WARN L193 SmtUtils]: Spent 1.13 m on a formula simplification that was a NOOP. DAG size: 433 [2020-11-30 00:01:50,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:01:50 BoogieIcfgContainer [2020-11-30 00:01:50,217 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:01:50,218 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:01:50,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:01:50,218 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:01:50,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:59:01" (3/4) ... [2020-11-30 00:01:50,223 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:01:50,306 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a996bb63-b71b-4fcc-83d7-4ce2a0585650/bin/uautomizer/witness.graphml [2020-11-30 00:01:50,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:01:50,313 INFO L168 Benchmark]: Toolchain (without parser) took 171765.17 ms. Allocated memory was 88.1 MB in the beginning and 159.4 MB in the end (delta: 71.3 MB). Free memory was 54.7 MB in the beginning and 124.6 MB in the end (delta: -69.9 MB). Peak memory consumption was 91.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:01:50,313 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 88.1 MB. Free memory was 59.4 MB in the beginning and 59.4 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:01:50,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.36 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 54.4 MB in the beginning and 72.8 MB in the end (delta: -18.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:01:50,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 121.20 ms. Allocated memory is still 107.0 MB. Free memory was 72.8 MB in the beginning and 68.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:01:50,316 INFO L168 Benchmark]: Boogie Preprocessor took 88.70 ms. Allocated memory is still 107.0 MB. Free memory was 68.1 MB in the beginning and 64.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:01:50,317 INFO L168 Benchmark]: RCFGBuilder took 1831.77 ms. Allocated memory is still 107.0 MB. Free memory was 64.4 MB in the beginning and 71.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:01:50,318 INFO L168 Benchmark]: BuchiAutomizer took 168865.77 ms. Allocated memory was 107.0 MB in the beginning and 159.4 MB in the end (delta: 52.4 MB). Free memory was 71.1 MB in the beginning and 37.8 MB in the end (delta: 33.2 MB). Peak memory consumption was 94.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:01:50,318 INFO L168 Benchmark]: Witness Printer took 93.33 ms. Allocated memory is still 159.4 MB. Free memory was 36.8 MB in the beginning and 124.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:01:50,321 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 88.1 MB. Free memory was 59.4 MB in the beginning and 59.4 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 757.36 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 54.4 MB in the beginning and 72.8 MB in the end (delta: -18.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 121.20 ms. Allocated memory is still 107.0 MB. Free memory was 72.8 MB in the beginning and 68.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.70 ms. Allocated memory is still 107.0 MB. Free memory was 68.1 MB in the beginning and 64.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1831.77 ms. Allocated memory is still 107.0 MB. Free memory was 64.4 MB in the beginning and 71.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 168865.77 ms. Allocated memory was 107.0 MB in the beginning and 159.4 MB in the end (delta: 52.4 MB). Free memory was 71.1 MB in the beginning and 37.8 MB in the end (delta: 33.2 MB). Peak memory consumption was 94.9 MB. Max. memory is 16.1 GB. * Witness Printer took 93.33 ms. Allocated memory is still 159.4 MB. Free memory was 36.8 MB in the beginning and 124.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 772 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 168.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 167.6s. Construction of modules took 0.3s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 532 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 772 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 820 SDtfs, 1342 SDslu, 1392 SDs, 0 SdLazy, 122 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI2 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: 952]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=11211} State at position 1 is {NULL=0, NULL=0, NULL=11211, NULL=11218, methaneLevelCritical=0, NULL=0, NULL=11212, tmp___1=0, NULL=11234, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f84b4be=0, NULL=0, NULL=11231, NULL=11226, cleanupTimeShifts=4, tmp=0, NULL=0, waterLevel=1, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, tmp=1, NULL=11217, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@638e25=0, \result=1, NULL=0, retValue_acc=0, NULL=0, NULL=0, tmp___0=0, tmp=1, retValue_acc=1, NULL=11232, NULL=11239, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42d380a7=0, NULL=11225, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79c0ead3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b7c80ad=0, head=0, NULL=0, NULL=0, NULL=11235, tmp=0, NULL=0, NULL=0, NULL=0, NULL=11229, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@107aada7=0, NULL=0, retValue_acc=0, NULL=0, NULL=11224, NULL=11230, NULL=11221, NULL=11219, tmp___0=0, NULL=0, tmp=0, NULL=0, tmp___0=1, NULL=11238, NULL=11223, NULL=11227, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@406dfd6=0, NULL=0, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2859a47b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61339467=70, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c508488=0, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=11214, \result=0, NULL=11237, NULL=11216, NULL=11222, retValue_acc=1, NULL=11220, NULL=11215, tmp=0, tmp___2=70, splverifierCounter=0, NULL=0, \result=0, NULL=11213, NULL=11233, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e083649=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4809e66c=0, NULL=11228, NULL=11236, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L589] int waterLevel = 1; [L590] int methaneLevelCritical = 0; [L696] int pumpRunning = 0; [L697] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L943] int splverifierCounter ; [L944] int tmp ; [L945] int tmp___0 ; [L946] int tmp___1 ; [L947] int tmp___2 ; [L950] splverifierCounter = 0 Loop: [L952] COND TRUE 1 [L954] COND TRUE splverifierCounter < 4 [L960] tmp = __VERIFIER_nondet_int() [L962] COND FALSE !(\read(tmp)) [L970] tmp___0 = __VERIFIER_nondet_int() [L972] COND FALSE !(\read(tmp___0)) [L980] tmp___2 = __VERIFIER_nondet_int() [L982] COND TRUE \read(tmp___2) [L937] systemActive = 1 [L703] COND FALSE !(\read(pumpRunning)) [L710] COND TRUE \read(systemActive) [L784] int tmp ; [L787] COND FALSE !(\read(pumpRunning)) [L758] int tmp ; [L761] COND FALSE !(\read(pumpRunning)) [L732] int tmp ; [L735] COND TRUE ! pumpRunning [L881] int retValue_acc ; [L882] int tmp ; [L883] int tmp___0 ; [L669] int retValue_acc ; [L672] COND TRUE waterLevel < 2 [L673] retValue_acc = 1 [L674] return (retValue_acc); [L887] tmp = isHighWaterSensorDry() [L889] COND TRUE \read(tmp) [L890] tmp___0 = 0 [L894] retValue_acc = tmp___0 [L895] return (retValue_acc); [L737] tmp = isHighWaterLevel() [L739] COND FALSE !(\read(tmp)) [L552] int tmp ; [L553] int tmp___0 ; [L554] int tmp___1 ; [L628] int retValue_acc ; [L631] retValue_acc = methaneLevelCritical [L632] return (retValue_acc); [L558] tmp = isMethaneLevelCritical() [L560] COND FALSE !(\read(tmp)) [L660] int retValue_acc ; [L663] retValue_acc = waterLevel [L664] return (retValue_acc); [L564] tmp___0 = getWaterLevel() [L566] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...