./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.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_e934f930-7879-47d9-8915-f9d797516902/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/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 de1d9a043543a6ff316ba93a02e2ab847e173d5e ............................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:01:58,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:01:58,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:01:59,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:01:59,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:01:59,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:01:59,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:01:59,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:01:59,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:01:59,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:01:59,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:01:59,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:01:59,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:01:59,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:01:59,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:01:59,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:01:59,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:01:59,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:01:59,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:01:59,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:01:59,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:01:59,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:01:59,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:01:59,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:01:59,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:01:59,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:01:59,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:01:59,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:01:59,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:01:59,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:01:59,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:01:59,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:01:59,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:01:59,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:01:59,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:01:59,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:01:59,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:01:59,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:01:59,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:01:59,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:01:59,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:01:59,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 20:01:59,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:01:59,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:01:59,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:01:59,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:01:59,228 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:01:59,228 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:01:59,228 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:01:59,229 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:01:59,229 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:01:59,229 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:01:59,231 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:01:59,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:01:59,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:01:59,232 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:01:59,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:01:59,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:01:59,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:01:59,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:01:59,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:01:59,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:01:59,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:01:59,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:01:59,235 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:01:59,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:01:59,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:01:59,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:01:59,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:01:59,236 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:01:59,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:01:59,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:01:59,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:01:59,240 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:01:59,242 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:01:59,242 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_e934f930-7879-47d9-8915-f9d797516902/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de1d9a043543a6ff316ba93a02e2ab847e173d5e [2020-11-29 20:01:59,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:01:59,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:01:59,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:01:59,701 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:01:59,713 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:01:59,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2020-11-29 20:01:59,813 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/bin/uautomizer/data/3239c766c/8cf1df5a7ec04d579e96a11c21b2de4b/FLAG0fefe0796 [2020-11-29 20:02:00,448 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:02:00,449 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2020-11-29 20:02:00,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/bin/uautomizer/data/3239c766c/8cf1df5a7ec04d579e96a11c21b2de4b/FLAG0fefe0796 [2020-11-29 20:02:00,743 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/bin/uautomizer/data/3239c766c/8cf1df5a7ec04d579e96a11c21b2de4b [2020-11-29 20:02:00,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:02:00,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:02:00,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:02:00,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:02:00,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:02:00,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:02:00" (1/1) ... [2020-11-29 20:02:00,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e893360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:00, skipping insertion in model container [2020-11-29 20:02:00,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:02:00" (1/1) ... [2020-11-29 20:02:00,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:02:00,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:02:01,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:02:01,246 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:02:01,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:02:01,457 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:02:01,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:01 WrapperNode [2020-11-29 20:02:01,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:02:01,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:02:01,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:02:01,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:02:01,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:01" (1/1) ... [2020-11-29 20:02:01,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:01" (1/1) ... [2020-11-29 20:02:01,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:02:01,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:02:01,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:02:01,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:02:01,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:01" (1/1) ... [2020-11-29 20:02:01,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:01" (1/1) ... [2020-11-29 20:02:01,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:01" (1/1) ... [2020-11-29 20:02:01,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:01" (1/1) ... [2020-11-29 20:02:01,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:01" (1/1) ... [2020-11-29 20:02:01,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:01" (1/1) ... [2020-11-29 20:02:01,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:01" (1/1) ... [2020-11-29 20:02:01,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:02:01,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:02:01,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:02:01,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:02:01,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/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 20:02:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:02:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:02:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:02:01,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:02:03,002 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:02:03,002 INFO L298 CfgBuilder]: Removed 110 assume(true) statements. [2020-11-29 20:02:03,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:02:03 BoogieIcfgContainer [2020-11-29 20:02:03,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:02:03,007 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:02:03,007 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:02:03,012 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:02:03,013 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:02:03,014 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:02:00" (1/3) ... [2020-11-29 20:02:03,016 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@400efab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:02:03, skipping insertion in model container [2020-11-29 20:02:03,016 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:02:03,016 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:01" (2/3) ... [2020-11-29 20:02:03,017 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@400efab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:02:03, skipping insertion in model container [2020-11-29 20:02:03,017 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:02:03,017 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:02:03" (3/3) ... [2020-11-29 20:02:03,023 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2020-11-29 20:02:03,084 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:02:03,084 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:02:03,085 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:02:03,085 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:02:03,085 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:02:03,085 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:02:03,085 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:02:03,085 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:02:03,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84 states. [2020-11-29 20:02:03,159 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2020-11-29 20:02:03,160 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:02:03,160 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:02:03,173 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:03,174 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:03,174 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:02:03,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84 states. [2020-11-29 20:02:03,195 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2020-11-29 20:02:03,197 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:02:03,197 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:02:03,199 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:03,199 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:03,215 INFO L794 eck$LassoCheckResult]: Stem: 38#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);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(21);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(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(13);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string63.base, #t~string63.offset, 1);call write~init~int(80, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(117, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(109, #t~string63.base, 3 + #t~string63.offset, 1);call write~init~int(112, #t~string63.base, 4 + #t~string63.offset, 1);call write~init~int(58, #t~string63.base, 5 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 6 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string69.base, #t~string69.offset, 1);call write~init~int(32, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string71.base, #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 1 + #t~string71.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 11#L-1true havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~8, main_~tmp~3;havoc main_~retValue_acc~8;havoc main_~tmp~3; 31#L534true havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 37#L542true main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 61#L634true assume 0 != main_~tmp~3; 54#L608true ~methAndRunningLastTime~0 := 0; 79#L913true havoc test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_#t~nondet76, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 81#L924-1true [2020-11-29 20:02:03,216 INFO L796 eck$LassoCheckResult]: Loop: 81#L924-1true assume !false; 74#L840true assume test_~splverifierCounter~0 < 4; 12#L841true test_~tmp~6 := test_#t~nondet73;havoc test_#t~nondet73; 42#L849true assume !(0 != test_~tmp~6); 44#L849-1true test_~tmp___0~1 := test_#t~nondet74;havoc test_#t~nondet74; 21#L859true assume !(0 != test_~tmp___0~1); 24#L859-1true test_~tmp___2~0 := test_#t~nondet75;havoc test_#t~nondet75; 83#L869true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 7#L877-1true assume !(0 != ~pumpRunning~0); 9#L661true assume !(0 != ~systemActive~0); 76#L668true havoc __utac_acc__Specification2_spec__2_#t~ret77, __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 28#L92true __utac_acc__Specification2_spec__2_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret77;havoc __utac_acc__Specification2_spec__2_#t~ret77; 77#L924true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 81#L924-1true [2020-11-29 20:02:03,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:03,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-29 20:02:03,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:03,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476637737] [2020-11-29 20:02:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:02:03,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:02:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:02:03,874 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:02:03,950 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:02:03,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:03,957 INFO L82 PathProgramCache]: Analyzing trace with hash 12296214, now seen corresponding path program 1 times [2020-11-29 20:02:03,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:03,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908833803] [2020-11-29 20:02:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:04,045 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 20:02:04,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908833803] [2020-11-29 20:02:04,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:02:04,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:02:04,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569000994] [2020-11-29 20:02:04,053 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:02:04,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:02:04,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:02:04,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:02:04,082 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-11-29 20:02:04,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:02:04,231 INFO L93 Difference]: Finished difference Result 155 states and 223 transitions. [2020-11-29 20:02:04,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:02:04,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 155 states and 223 transitions. [2020-11-29 20:02:04,241 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 98 [2020-11-29 20:02:04,250 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 155 states to 141 states and 208 transitions. [2020-11-29 20:02:04,251 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2020-11-29 20:02:04,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 141 [2020-11-29 20:02:04,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 208 transitions. [2020-11-29 20:02:04,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:02:04,256 INFO L691 BuchiCegarLoop]: Abstraction has 141 states and 208 transitions. [2020-11-29 20:02:04,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 208 transitions. [2020-11-29 20:02:04,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2020-11-29 20:02:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-11-29 20:02:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 205 transitions. [2020-11-29 20:02:04,315 INFO L714 BuchiCegarLoop]: Abstraction has 139 states and 205 transitions. [2020-11-29 20:02:04,316 INFO L594 BuchiCegarLoop]: Abstraction has 139 states and 205 transitions. [2020-11-29 20:02:04,316 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:02:04,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 139 states and 205 transitions. [2020-11-29 20:02:04,327 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 96 [2020-11-29 20:02:04,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:02:04,328 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:02:04,331 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:04,332 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:04,332 INFO L794 eck$LassoCheckResult]: Stem: 299#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);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(21);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(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(13);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string63.base, #t~string63.offset, 1);call write~init~int(80, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(117, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(109, #t~string63.base, 3 + #t~string63.offset, 1);call write~init~int(112, #t~string63.base, 4 + #t~string63.offset, 1);call write~init~int(58, #t~string63.base, 5 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 6 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string69.base, #t~string69.offset, 1);call write~init~int(32, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string71.base, #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 1 + #t~string71.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 263#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~8, main_~tmp~3;havoc main_~retValue_acc~8;havoc main_~tmp~3; 264#L534 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 289#L542 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 298#L634 assume 0 != main_~tmp~3; 314#L608 ~methAndRunningLastTime~0 := 0; 315#L913 havoc test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_#t~nondet76, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 326#L924-1 [2020-11-29 20:02:04,333 INFO L796 eck$LassoCheckResult]: Loop: 326#L924-1 assume !false; 325#L840 assume test_~splverifierCounter~0 < 4; 265#L841 test_~tmp~6 := test_#t~nondet73;havoc test_#t~nondet73; 266#L849 assume !(0 != test_~tmp~6); 303#L849-1 test_~tmp___0~1 := test_#t~nondet74;havoc test_#t~nondet74; 275#L859 assume !(0 != test_~tmp___0~1); 277#L859-1 test_~tmp___2~0 := test_#t~nondet75;havoc test_#t~nondet75; 278#L869 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 250#L877-1 assume !(0 != ~pumpRunning~0); 256#L661 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret54, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 260#L693 assume !(0 == ~pumpRunning~0); 370#L668 havoc __utac_acc__Specification2_spec__2_#t~ret77, __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 369#L92 __utac_acc__Specification2_spec__2_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret77;havoc __utac_acc__Specification2_spec__2_#t~ret77; 367#L924 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 326#L924-1 [2020-11-29 20:02:04,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:04,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-29 20:02:04,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:04,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922003277] [2020-11-29 20:02:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:02:04,449 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:02:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:02:04,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:02:04,597 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:02:04,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:04,598 INFO L82 PathProgramCache]: Analyzing trace with hash 349571875, now seen corresponding path program 1 times [2020-11-29 20:02:04,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:04,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143597574] [2020-11-29 20:02:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:04,628 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 20:02:04,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143597574] [2020-11-29 20:02:04,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:02:04,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:02:04,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742047690] [2020-11-29 20:02:04,630 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:02:04,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:02:04,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:02:04,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:02:04,631 INFO L87 Difference]: Start difference. First operand 139 states and 205 transitions. cyclomatic complexity: 69 Second operand 3 states. [2020-11-29 20:02:04,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:02:04,753 INFO L93 Difference]: Finished difference Result 228 states and 323 transitions. [2020-11-29 20:02:04,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:02:04,756 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 323 transitions. [2020-11-29 20:02:04,760 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 163 [2020-11-29 20:02:04,769 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 228 states and 323 transitions. [2020-11-29 20:02:04,771 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 228 [2020-11-29 20:02:04,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 228 [2020-11-29 20:02:04,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 228 states and 323 transitions. [2020-11-29 20:02:04,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:02:04,778 INFO L691 BuchiCegarLoop]: Abstraction has 228 states and 323 transitions. [2020-11-29 20:02:04,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states and 323 transitions. [2020-11-29 20:02:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-11-29 20:02:04,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-11-29 20:02:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 323 transitions. [2020-11-29 20:02:04,817 INFO L714 BuchiCegarLoop]: Abstraction has 228 states and 323 transitions. [2020-11-29 20:02:04,817 INFO L594 BuchiCegarLoop]: Abstraction has 228 states and 323 transitions. [2020-11-29 20:02:04,817 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:02:04,818 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 228 states and 323 transitions. [2020-11-29 20:02:04,823 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 163 [2020-11-29 20:02:04,823 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:02:04,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:02:04,825 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:04,825 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 20:02:04,826 INFO L794 eck$LassoCheckResult]: Stem: 674#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);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(21);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(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(13);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string63.base, #t~string63.offset, 1);call write~init~int(80, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(117, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(109, #t~string63.base, 3 + #t~string63.offset, 1);call write~init~int(112, #t~string63.base, 4 + #t~string63.offset, 1);call write~init~int(58, #t~string63.base, 5 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 6 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string69.base, #t~string69.offset, 1);call write~init~int(32, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string71.base, #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 1 + #t~string71.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 636#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~8, main_~tmp~3;havoc main_~retValue_acc~8;havoc main_~tmp~3; 637#L534 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 663#L542 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 672#L634 assume 0 != main_~tmp~3; 689#L608 ~methAndRunningLastTime~0 := 0; 690#L913 havoc test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_#t~nondet76, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 708#L924-1 [2020-11-29 20:02:04,828 INFO L796 eck$LassoCheckResult]: Loop: 708#L924-1 assume !false; 830#L840 assume test_~splverifierCounter~0 < 4; 831#L841 test_~tmp~6 := test_#t~nondet73;havoc test_#t~nondet73; 838#L849 assume !(0 != test_~tmp~6); 836#L849-1 test_~tmp___0~1 := test_#t~nondet74;havoc test_#t~nondet74; 835#L859 assume !(0 != test_~tmp___0~1); 833#L859-1 test_~tmp___2~0 := test_#t~nondet75;havoc test_#t~nondet75; 832#L869 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 623#L877-1 assume !(0 != ~pumpRunning~0); 628#L661 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret54, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 703#L693 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret72, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 683#L132 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 684#L137 isHighWaterLevel_#t~ret72 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret72;havoc isHighWaterLevel_#t~ret72; 691#L795 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~0 := 0; 685#L795-2 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 661#L801 processEnvironment_#t~ret54 := isHighWaterLevel_#res;processEnvironment_~tmp~4 := processEnvironment_#t~ret54;havoc processEnvironment_#t~ret54; 662#L697 assume !(0 != processEnvironment_~tmp~4); 697#L668 havoc __utac_acc__Specification2_spec__2_#t~ret77, __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 848#L92 __utac_acc__Specification2_spec__2_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret77;havoc __utac_acc__Specification2_spec__2_#t~ret77; 846#L924 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 708#L924-1 [2020-11-29 20:02:04,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:04,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-29 20:02:04,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:04,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523736416] [2020-11-29 20:02:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:02:04,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:02:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:02:05,012 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:02:05,031 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:02:05,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:05,033 INFO L82 PathProgramCache]: Analyzing trace with hash -678407121, now seen corresponding path program 1 times [2020-11-29 20:02:05,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:05,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181805321] [2020-11-29 20:02:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:02:05,043 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:02:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:02:05,058 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:02:05,065 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:02:05,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:05,066 INFO L82 PathProgramCache]: Analyzing trace with hash 487169653, now seen corresponding path program 1 times [2020-11-29 20:02:05,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:05,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231460503] [2020-11-29 20:02:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:02:05,154 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:02:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:02:05,216 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:02:05,238 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:02:05,479 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-11-29 20:02:05,601 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-11-29 20:03:51,116 WARN L193 SmtUtils]: Spent 1.76 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-29 20:05:09,132 WARN L193 SmtUtils]: Spent 1.30 m on a formula simplification that was a NOOP. DAG size: 435 [2020-11-29 20:05:09,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:05:09 BoogieIcfgContainer [2020-11-29 20:05:09,349 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:05:09,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:05:09,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:05:09,350 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:05:09,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:02:03" (3/4) ... [2020-11-29 20:05:09,355 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 20:05:09,426 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e934f930-7879-47d9-8915-f9d797516902/bin/uautomizer/witness.graphml [2020-11-29 20:05:09,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:05:09,429 INFO L168 Benchmark]: Toolchain (without parser) took 188678.65 ms. Allocated memory was 81.8 MB in the beginning and 144.7 MB in the end (delta: 62.9 MB). Free memory was 50.2 MB in the beginning and 101.6 MB in the end (delta: -51.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:09,430 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 81.8 MB. Free memory was 52.4 MB in the beginning and 52.4 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:05:09,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.01 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 50.0 MB in the beginning and 65.8 MB in the end (delta: -15.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:09,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.27 ms. Allocated memory is still 98.6 MB. Free memory was 65.8 MB in the beginning and 62.7 MB in the end (delta: 3.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:05:09,432 INFO L168 Benchmark]: Boogie Preprocessor took 52.11 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 60.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:09,433 INFO L168 Benchmark]: RCFGBuilder took 1382.35 ms. Allocated memory is still 98.6 MB. Free memory was 60.7 MB in the beginning and 57.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:09,434 INFO L168 Benchmark]: BuchiAutomizer took 186342.40 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 57.2 MB in the beginning and 103.7 MB in the end (delta: -46.4 MB). Peak memory consumption was 77.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:09,435 INFO L168 Benchmark]: Witness Printer took 77.05 ms. Allocated memory is still 144.7 MB. Free memory was 103.7 MB in the beginning and 101.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:09,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 81.8 MB. Free memory was 52.4 MB in the beginning and 52.4 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 710.01 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 50.0 MB in the beginning and 65.8 MB in the end (delta: -15.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.27 ms. Allocated memory is still 98.6 MB. Free memory was 65.8 MB in the beginning and 62.7 MB in the end (delta: 3.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.11 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 60.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1382.35 ms. Allocated memory is still 98.6 MB. Free memory was 60.7 MB in the beginning and 57.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 186342.40 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 57.2 MB in the beginning and 103.7 MB in the end (delta: -46.4 MB). Peak memory consumption was 77.3 MB. Max. memory is 16.1 GB. * Witness Printer took 77.05 ms. Allocated memory is still 144.7 MB. Free memory was 103.7 MB in the beginning and 101.6 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 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 228 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 186.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 185.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 228 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 235 SDtfs, 199 SDslu, 158 SDs, 0 SdLazy, 32 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 839]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=20311} State at position 1 is {NULL=0, NULL=52709, NULL=0, NULL=0, NULL=20311, NULL=52689, NULL=52705, NULL=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c06c162=0, tmp=0, NULL=0, tmp___1=0, NULL=0, NULL=52701, NULL=52698, cleanupTimeShifts=4, NULL=52690, NULL=52707, waterLevel=1, NULL=0, NULL=0, NULL=0, NULL=52696, \result=1, head=0, pumpRunning=0, NULL=52693, tmp=1, NULL=0, retValue_acc=1, NULL=0, \result=1, NULL=52695, NULL=0, retValue_acc=0, tmp=1, tmp___0=0, methAndRunningLastTime=0, NULL=52694, head=0, tmp=0, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=52703, NULL=20314, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7cd4c842=0, NULL=52711, NULL=20312, tmp___0=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d0c53ae=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=52706, NULL=0, NULL=52699, \result=0, NULL=0, NULL=52692, NULL=0, NULL=52714, NULL=52702, \result=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43fc2bed=0, NULL=52697, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7174d314=0, NULL=52691, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39aa819d=83, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1eb4145e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d00c0d5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67ebd608=0, NULL=52710, retValue_acc=1, NULL=52700, tmp___2=83, tmp___0=0, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=52713, NULL=20313, NULL=52704, NULL=0, NULL=52708, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L312] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L547] int cleanupTimeShifts = 4; [L653] int pumpRunning = 0; [L654] int systemActive = 1; [L907] int methAndRunningLastTime ; [L625] int retValue_acc ; [L626] int tmp ; [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); [L632] tmp = valid_product() [L634] COND TRUE \read(tmp) [L912] methAndRunningLastTime = 0 [L830] int splverifierCounter ; [L831] int tmp ; [L832] int tmp___0 ; [L833] int tmp___1 ; [L834] int tmp___2 ; [L837] splverifierCounter = 0 Loop: [L839] COND TRUE 1 [L841] COND TRUE splverifierCounter < 4 [L847] tmp = __VERIFIER_nondet_int() [L849] COND FALSE !(\read(tmp)) [L857] tmp___0 = __VERIFIER_nondet_int() [L859] COND FALSE !(\read(tmp___0)) [L867] tmp___2 = __VERIFIER_nondet_int() [L869] COND TRUE \read(tmp___2) [L824] systemActive = 1 [L661] COND FALSE !(\read(pumpRunning)) [L668] COND TRUE \read(systemActive) [L690] int tmp ; [L693] COND TRUE ! pumpRunning [L787] int retValue_acc ; [L788] int tmp ; [L789] int tmp___0 ; [L129] int retValue_acc ; [L132] COND TRUE waterLevel < 2 [L133] retValue_acc = 1 [L134] return (retValue_acc); [L793] tmp = isHighWaterSensorDry() [L795] COND TRUE \read(tmp) [L796] tmp___0 = 0 [L800] retValue_acc = tmp___0 [L801] return (retValue_acc); [L695] tmp = isHighWaterLevel() [L697] COND FALSE !(\read(tmp)) [L917] int tmp ; [L918] int tmp___0 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L922] tmp = isMethaneLevelCritical() [L924] COND FALSE !(\read(tmp)) [L940] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...