./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product42.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_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/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 7e359c3e690bc34b8e145f12f51e57f299b8b0bc ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:39:00,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:39:00,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:39:00,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:39:00,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:39:00,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:39:01,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:39:01,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:39:01,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:39:01,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:39:01,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:39:01,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:39:01,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:39:01,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:39:01,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:39:01,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:39:01,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:39:01,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:39:01,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:39:01,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:39:01,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:39:01,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:39:01,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:39:01,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:39:01,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:39:01,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:39:01,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:39:01,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:39:01,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:39:01,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:39:01,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:39:01,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:39:01,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:39:01,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:39:01,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:39:01,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:39:01,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:39:01,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:39:01,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:39:01,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:39:01,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:39:01,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 19:39:01,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:39:01,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:39:01,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:39:01,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:39:01,087 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:39:01,087 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:39:01,087 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:39:01,087 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:39:01,088 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:39:01,088 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:39:01,088 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:39:01,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:39:01,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:39:01,089 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:39:01,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:39:01,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:39:01,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:39:01,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:39:01,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:39:01,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:39:01,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:39:01,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:39:01,092 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:39:01,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:39:01,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:39:01,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:39:01,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:39:01,093 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:39:01,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:39:01,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:39:01,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:39:01,094 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:39:01,095 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:39:01,096 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_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e359c3e690bc34b8e145f12f51e57f299b8b0bc [2020-11-29 19:39:01,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:39:01,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:39:01,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:39:01,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:39:01,408 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:39:01,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c [2020-11-29 19:39:01,494 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer/data/88edc77bc/0b2e9b4dd7da434a819ecf8e840140c2/FLAG1daf763e3 [2020-11-29 19:39:02,251 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:39:02,252 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c [2020-11-29 19:39:02,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer/data/88edc77bc/0b2e9b4dd7da434a819ecf8e840140c2/FLAG1daf763e3 [2020-11-29 19:39:02,538 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer/data/88edc77bc/0b2e9b4dd7da434a819ecf8e840140c2 [2020-11-29 19:39:02,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:39:02,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:39:02,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:39:02,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:39:02,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:39:02,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:39:02" (1/1) ... [2020-11-29 19:39:02,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d0b5339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:02, skipping insertion in model container [2020-11-29 19:39:02,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:39:02" (1/1) ... [2020-11-29 19:39:02,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:39:02,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:39:03,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:39:03,090 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:39:03,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:39:03,287 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:39:03,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:03 WrapperNode [2020-11-29 19:39:03,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:39:03,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:39:03,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:39:03,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:39:03,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:03" (1/1) ... [2020-11-29 19:39:03,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:03" (1/1) ... [2020-11-29 19:39:03,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:39:03,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:39:03,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:39:03,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:39:03,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:03" (1/1) ... [2020-11-29 19:39:03,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:03" (1/1) ... [2020-11-29 19:39:03,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:03" (1/1) ... [2020-11-29 19:39:03,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:03" (1/1) ... [2020-11-29 19:39:03,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:03" (1/1) ... [2020-11-29 19:39:03,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:03" (1/1) ... [2020-11-29 19:39:03,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:03" (1/1) ... [2020-11-29 19:39:03,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:39:03,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:39:03,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:39:03,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:39:03,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:39:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:39:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:39:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:39:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:39:04,589 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:39:04,590 INFO L298 CfgBuilder]: Removed 128 assume(true) statements. [2020-11-29 19:39:04,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:04 BoogieIcfgContainer [2020-11-29 19:39:04,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:39:04,593 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:39:04,594 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:39:04,597 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:39:04,598 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:39:04,598 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:39:02" (1/3) ... [2020-11-29 19:39:04,600 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2bfa05a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:39:04, skipping insertion in model container [2020-11-29 19:39:04,600 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:39:04,600 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:03" (2/3) ... [2020-11-29 19:39:04,601 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2bfa05a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:39:04, skipping insertion in model container [2020-11-29 19:39:04,602 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:39:04,602 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:04" (3/3) ... [2020-11-29 19:39:04,606 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-11-29 19:39:04,668 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:39:04,668 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:39:04,668 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:39:04,668 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:39:04,669 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:39:04,669 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:39:04,669 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:39:04,669 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:39:04,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states. [2020-11-29 19:39:04,732 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2020-11-29 19:39:04,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:04,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:04,745 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:39:04,745 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:04,745 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:39:04,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states. [2020-11-29 19:39:04,760 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2020-11-29 19:39:04,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:04,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:04,761 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:39:04,762 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:04,766 INFO L794 eck$LassoCheckResult]: Stem: 29#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 12#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; 4#L526true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 25#L534true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 40#L132true assume 0 != main_~tmp~0; 80#L105true havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 76#L920-1true [2020-11-29 19:39:04,767 INFO L796 eck$LassoCheckResult]: Loop: 76#L920-1true assume !false; 26#L158true assume test_~splverifierCounter~0 < 4; 82#L159true test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 77#L167true assume !(0 != test_~tmp~1); 75#L167-1true test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 49#L177true assume !(0 != test_~tmp___0~0); 45#L177-1true test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 22#L187true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 62#L195-2true assume !(0 != ~pumpRunning~0); 71#L229true assume !(0 != ~systemActive~0); 88#L236true havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 66#L444-1true __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 13#L914true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 76#L920-1true [2020-11-29 19:39:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:04,774 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 19:39:04,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:04,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164123364] [2020-11-29 19:39:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:05,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:05,313 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:05,369 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:05,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:05,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1680236938, now seen corresponding path program 1 times [2020-11-29 19:39:05,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:05,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720099165] [2020-11-29 19:39:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:05,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720099165] [2020-11-29 19:39:05,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:05,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:39:05,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692941436] [2020-11-29 19:39:05,469 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:39:05,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:39:05,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:39:05,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:39:05,491 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 3 states. [2020-11-29 19:39:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:05,564 INFO L93 Difference]: Finished difference Result 90 states and 125 transitions. [2020-11-29 19:39:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:39:05,566 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 125 transitions. [2020-11-29 19:39:05,575 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2020-11-29 19:39:05,586 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 83 states and 117 transitions. [2020-11-29 19:39:05,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 83 [2020-11-29 19:39:05,592 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 83 [2020-11-29 19:39:05,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 117 transitions. [2020-11-29 19:39:05,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:39:05,594 INFO L691 BuchiCegarLoop]: Abstraction has 83 states and 117 transitions. [2020-11-29 19:39:05,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 117 transitions. [2020-11-29 19:39:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-11-29 19:39:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-29 19:39:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2020-11-29 19:39:05,643 INFO L714 BuchiCegarLoop]: Abstraction has 83 states and 117 transitions. [2020-11-29 19:39:05,643 INFO L594 BuchiCegarLoop]: Abstraction has 83 states and 117 transitions. [2020-11-29 19:39:05,643 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:39:05,644 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 117 transitions. [2020-11-29 19:39:05,650 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2020-11-29 19:39:05,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:05,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:05,653 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:39:05,654 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:05,654 INFO L794 eck$LassoCheckResult]: Stem: 234#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 211#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; 197#L526 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 198#L534 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 228#L132 assume 0 != main_~tmp~0; 243#L105 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 213#L920-1 [2020-11-29 19:39:05,655 INFO L796 eck$LassoCheckResult]: Loop: 213#L920-1 assume !false; 229#L158 assume test_~splverifierCounter~0 < 4; 230#L159 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 274#L167 assume !(0 != test_~tmp~1); 273#L167-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 261#L177 assume !(0 != test_~tmp___0~0); 221#L177-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 222#L187 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 223#L195-2 assume !(0 != ~pumpRunning~0); 263#L229 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 247#L261 assume !(0 == ~pumpRunning~0); 248#L236 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 269#L444-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 212#L914 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 213#L920-1 [2020-11-29 19:39:05,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:05,667 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 19:39:05,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:05,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189534292] [2020-11-29 19:39:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:05,775 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:05,876 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:05,911 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:05,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:05,916 INFO L82 PathProgramCache]: Analyzing trace with hash -589506386, now seen corresponding path program 1 times [2020-11-29 19:39:05,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:05,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641768523] [2020-11-29 19:39:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:05,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641768523] [2020-11-29 19:39:05,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:05,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:39:05,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588000090] [2020-11-29 19:39:05,942 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:39:05,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:39:05,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:39:05,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:39:05,944 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. cyclomatic complexity: 36 Second operand 3 states. [2020-11-29 19:39:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:06,071 INFO L93 Difference]: Finished difference Result 130 states and 177 transitions. [2020-11-29 19:39:06,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:39:06,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 177 transitions. [2020-11-29 19:39:06,076 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 90 [2020-11-29 19:39:06,084 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 130 states and 177 transitions. [2020-11-29 19:39:06,084 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 130 [2020-11-29 19:39:06,085 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 130 [2020-11-29 19:39:06,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 130 states and 177 transitions. [2020-11-29 19:39:06,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:39:06,088 INFO L691 BuchiCegarLoop]: Abstraction has 130 states and 177 transitions. [2020-11-29 19:39:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states and 177 transitions. [2020-11-29 19:39:06,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-11-29 19:39:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-29 19:39:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 177 transitions. [2020-11-29 19:39:06,106 INFO L714 BuchiCegarLoop]: Abstraction has 130 states and 177 transitions. [2020-11-29 19:39:06,106 INFO L594 BuchiCegarLoop]: Abstraction has 130 states and 177 transitions. [2020-11-29 19:39:06,106 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:39:06,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 130 states and 177 transitions. [2020-11-29 19:39:06,109 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 90 [2020-11-29 19:39:06,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:06,110 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:06,111 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:39:06,111 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] [2020-11-29 19:39:06,112 INFO L794 eck$LassoCheckResult]: Stem: 453#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 430#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; 413#L526 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 414#L534 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 447#L132 assume 0 != main_~tmp~0; 465#L105 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 502#L920-1 [2020-11-29 19:39:06,113 INFO L796 eck$LassoCheckResult]: Loop: 502#L920-1 assume !false; 506#L158 assume test_~splverifierCounter~0 < 4; 507#L159 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 525#L167 assume !(0 != test_~tmp~1); 523#L167-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 521#L177 assume !(0 != test_~tmp___0~0); 519#L177-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 510#L187 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 493#L195-2 assume !(0 != ~pumpRunning~0); 494#L229 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 469#L261 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret31, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 466#L484 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 467#L489 isHighWaterLevel_#t~ret31 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret31;havoc isHighWaterLevel_#t~ret31; 454#L381 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 455#L381-2 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 418#L387 processEnvironment_#t~ret12 := isHighWaterLevel_#res;processEnvironment_~tmp~2 := processEnvironment_#t~ret12;havoc processEnvironment_#t~ret12; 419#L265 assume !(0 != processEnvironment_~tmp~2); 490#L236 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 518#L444-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 513#L914 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 502#L920-1 [2020-11-29 19:39:06,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:06,114 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 19:39:06,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:06,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958818632] [2020-11-29 19:39:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:06,225 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:06,311 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:06,337 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:06,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1033634406, now seen corresponding path program 1 times [2020-11-29 19:39:06,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:06,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729262191] [2020-11-29 19:39:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:06,346 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:06,352 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:06,358 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:06,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:06,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1018922432, now seen corresponding path program 1 times [2020-11-29 19:39:06,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:06,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075478173] [2020-11-29 19:39:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:06,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075478173] [2020-11-29 19:39:06,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:06,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:39:06,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822377659] [2020-11-29 19:39:06,618 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-11-29 19:39:06,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:39:06,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:39:06,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:39:06,736 INFO L87 Difference]: Start difference. First operand 130 states and 177 transitions. cyclomatic complexity: 49 Second operand 5 states. [2020-11-29 19:39:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:07,013 INFO L93 Difference]: Finished difference Result 434 states and 594 transitions. [2020-11-29 19:39:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:39:07,013 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 434 states and 594 transitions. [2020-11-29 19:39:07,021 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 314 [2020-11-29 19:39:07,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 434 states to 434 states and 594 transitions. [2020-11-29 19:39:07,030 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 434 [2020-11-29 19:39:07,033 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 434 [2020-11-29 19:39:07,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 434 states and 594 transitions. [2020-11-29 19:39:07,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:39:07,042 INFO L691 BuchiCegarLoop]: Abstraction has 434 states and 594 transitions. [2020-11-29 19:39:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states and 594 transitions. [2020-11-29 19:39:07,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 254. [2020-11-29 19:39:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-29 19:39:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 340 transitions. [2020-11-29 19:39:07,072 INFO L714 BuchiCegarLoop]: Abstraction has 254 states and 340 transitions. [2020-11-29 19:39:07,073 INFO L594 BuchiCegarLoop]: Abstraction has 254 states and 340 transitions. [2020-11-29 19:39:07,073 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:39:07,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 254 states and 340 transitions. [2020-11-29 19:39:07,078 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 180 [2020-11-29 19:39:07,080 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:07,081 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:07,083 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:39:07,083 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:07,083 INFO L794 eck$LassoCheckResult]: Stem: 1033#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 1012#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; 995#L526 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 996#L534 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1027#L132 assume 0 != main_~tmp~0; 1045#L105 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1085#L920-1 [2020-11-29 19:39:07,084 INFO L796 eck$LassoCheckResult]: Loop: 1085#L920-1 assume !false; 1028#L158 assume test_~splverifierCounter~0 < 4; 1029#L159 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 1086#L167 assume !(0 != test_~tmp~1); 1083#L167-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 1061#L177 assume !(0 != test_~tmp___0~0); 1051#L177-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 1021#L187 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1022#L195-2 assume !(0 != ~pumpRunning~0); 1077#L229 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1081#L261 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret31, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1046#L484 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1047#L489 isHighWaterLevel_#t~ret31 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret31;havoc isHighWaterLevel_#t~ret31; 1034#L381 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1035#L381-2 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 1000#L387 processEnvironment_#t~ret12 := isHighWaterLevel_#res;processEnvironment_~tmp~2 := processEnvironment_#t~ret12;havoc processEnvironment_#t~ret12; 1001#L265 assume !(0 != processEnvironment_~tmp~2); 1074#L236 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 1078#L444-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 1013#L914 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 1014#L476 __utac_acc__Specification3_spec__1_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret79;havoc __utac_acc__Specification3_spec__1_#t~ret79; 1037#L920 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 1085#L920-1 [2020-11-29 19:39:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-29 19:39:07,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:07,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200960023] [2020-11-29 19:39:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:07,153 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:07,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:07,209 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:07,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:07,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1185212338, now seen corresponding path program 1 times [2020-11-29 19:39:07,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:07,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745362961] [2020-11-29 19:39:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:07,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:07,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:07,233 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:07,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:07,235 INFO L82 PathProgramCache]: Analyzing trace with hash 68092788, now seen corresponding path program 1 times [2020-11-29 19:39:07,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:07,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019979985] [2020-11-29 19:39:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:07,282 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:07,348 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:07,369 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:07,575 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-11-29 19:40:44,476 WARN L193 SmtUtils]: Spent 1.61 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 19:41:54,940 WARN L193 SmtUtils]: Spent 1.17 m on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 19:41:55,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:41:55 BoogieIcfgContainer [2020-11-29 19:41:55,282 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:41:55,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:41:55,283 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:41:55,283 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:41:55,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:04" (3/4) ... [2020-11-29 19:41:55,288 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 19:41:55,356 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e8ee954a-dbd2-4b5a-bbd9-35c1afc05b08/bin/uautomizer/witness.graphml [2020-11-29 19:41:55,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:41:55,358 INFO L168 Benchmark]: Toolchain (without parser) took 172809.59 ms. Allocated memory was 90.2 MB in the beginning and 148.9 MB in the end (delta: 58.7 MB). Free memory was 61.1 MB in the beginning and 58.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:55,358 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 48.1 MB in the beginning and 48.0 MB in the end (delta: 52.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:41:55,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.41 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 60.8 MB in the beginning and 75.9 MB in the end (delta: -15.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:55,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.89 ms. Allocated memory is still 109.1 MB. Free memory was 75.9 MB in the beginning and 72.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:55,360 INFO L168 Benchmark]: Boogie Preprocessor took 61.94 ms. Allocated memory is still 109.1 MB. Free memory was 72.6 MB in the beginning and 70.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:55,360 INFO L168 Benchmark]: RCFGBuilder took 1132.56 ms. Allocated memory is still 109.1 MB. Free memory was 70.1 MB in the beginning and 61.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:55,361 INFO L168 Benchmark]: BuchiAutomizer took 170688.39 ms. Allocated memory was 109.1 MB in the beginning and 148.9 MB in the end (delta: 39.8 MB). Free memory was 61.5 MB in the beginning and 60.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 72.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:55,361 INFO L168 Benchmark]: Witness Printer took 74.28 ms. Allocated memory is still 148.9 MB. Free memory was 60.3 MB in the beginning and 58.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:55,364 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 48.1 MB in the beginning and 48.0 MB in the end (delta: 52.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 738.41 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 60.8 MB in the beginning and 75.9 MB in the end (delta: -15.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 106.89 ms. Allocated memory is still 109.1 MB. Free memory was 75.9 MB in the beginning and 72.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.94 ms. Allocated memory is still 109.1 MB. Free memory was 72.6 MB in the beginning and 70.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1132.56 ms. Allocated memory is still 109.1 MB. Free memory was 70.1 MB in the beginning and 61.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 170688.39 ms. Allocated memory was 109.1 MB in the beginning and 148.9 MB in the end (delta: 39.8 MB). Free memory was 61.5 MB in the beginning and 60.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 72.8 MB. Max. memory is 16.1 GB. * Witness Printer took 74.28 ms. Allocated memory is still 148.9 MB. Free memory was 60.3 MB in the beginning and 58.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 254 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 170.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 169.7s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 180 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 254 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 395 SDtfs, 649 SDslu, 534 SDs, 0 SdLazy, 103 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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: 157]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=19308} State at position 1 is {NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3696b080=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c1087e7=0, NULL=19308, NULL=27448, NULL=0, NULL=27444, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c9b8411=0, retValue_acc=0, NULL=27446, tmp___1=0, NULL=0, NULL=27449, NULL=27437, cleanupTimeShifts=4, tmp=0, tmp=0, waterLevel=1, NULL=0, tmp___0=0, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, NULL=27431, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f24fa11=0, \result=1, NULL=27450, NULL=0, NULL=0, tmp=1, NULL=27430, NULL=0, NULL=0, NULL=0, NULL=27439, NULL=27432, retValue_acc=1, NULL=27429, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70402ec9=0, head=0, NULL=0, NULL=0, NULL=27447, NULL=0, NULL=0, NULL=27445, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56a996f5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@439b3b0f=0, NULL=0, NULL=27451, NULL=19311, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a589e5a=70, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@367b5899=0, NULL=27438, tmp___0=0, NULL=0, NULL=19310, NULL=0, NULL=0, NULL=19309, tmp___0=1, NULL=0, systemActive=1, \result=1, \result=0, retValue_acc=0, NULL=27435, NULL=27452, \result=0, NULL=27433, NULL=0, NULL=0, NULL=27441, NULL=27443, retValue_acc=1, NULL=27436, tmp___2=70, splverifierCounter=0, NULL=0, \result=0, NULL=27442, NULL=27440, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a8fed9a=0, NULL=0, NULL=0, NULL=27453, NULL=0, NULL=27434} - 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; [L221] int pumpRunning = 0; [L222] int systemActive = 1; [L401] int waterLevel = 1; [L402] int methaneLevelCritical = 0; [L708] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L123] int retValue_acc ; [L124] int tmp ; [L530] int retValue_acc ; [L533] retValue_acc = 1 [L534] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L148] int splverifierCounter ; [L149] int tmp ; [L150] int tmp___0 ; [L151] int tmp___1 ; [L152] int tmp___2 ; [L155] splverifierCounter = 0 Loop: [L157] COND TRUE 1 [L159] COND TRUE splverifierCounter < 4 [L165] tmp = __VERIFIER_nondet_int() [L167] COND FALSE !(\read(tmp)) [L175] tmp___0 = __VERIFIER_nondet_int() [L177] COND FALSE !(\read(tmp___0)) [L185] tmp___2 = __VERIFIER_nondet_int() [L187] COND TRUE \read(tmp___2) [L395] systemActive = 1 [L229] COND FALSE !(\read(pumpRunning)) [L236] COND TRUE \read(systemActive) [L258] int tmp ; [L261] COND TRUE ! pumpRunning [L373] int retValue_acc ; [L374] int tmp ; [L375] int tmp___0 ; [L481] int retValue_acc ; [L484] COND TRUE waterLevel < 2 [L485] retValue_acc = 1 [L486] return (retValue_acc); [L379] tmp = isHighWaterSensorDry() [L381] COND TRUE \read(tmp) [L382] tmp___0 = 0 [L386] retValue_acc = tmp___0 [L387] return (retValue_acc); [L263] tmp = isHighWaterLevel() [L265] COND FALSE !(\read(tmp)) [L906] int tmp ; [L907] int tmp___0 ; [L908] int tmp___1 ; [L440] int retValue_acc ; [L443] retValue_acc = methaneLevelCritical [L444] return (retValue_acc); [L912] tmp = isMethaneLevelCritical() [L914] COND FALSE !(\read(tmp)) [L472] int retValue_acc ; [L475] retValue_acc = waterLevel [L476] return (retValue_acc); [L918] tmp___0 = getWaterLevel() [L920] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...