./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_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_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/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 40c03acb761953b49167bc0508d57daafd17b745 ........................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:44:49,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:44:49,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:44:49,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:44:49,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:44:49,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:44:49,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:44:49,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:44:49,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:44:49,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:44:49,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:44:49,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:44:49,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:44:49,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:44:49,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:44:49,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:44:49,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:44:49,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:44:49,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:44:49,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:44:49,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:44:49,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:44:49,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:44:49,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:44:49,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:44:49,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:44:49,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:44:49,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:44:49,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:44:49,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:44:49,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:44:49,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:44:49,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:44:49,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:44:49,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:44:49,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:44:49,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:44:49,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:44:49,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:44:49,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:44:49,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:44:49,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 19:44:49,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:44:49,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:44:49,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:44:49,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:44:49,687 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:44:49,688 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:44:49,688 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:44:49,688 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:44:49,689 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:44:49,689 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:44:49,690 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:44:49,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:44:49,691 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:44:49,691 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:44:49,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:44:49,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:44:49,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:44:49,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:44:49,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:44:49,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:44:49,693 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:44:49,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:44:49,693 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:44:49,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:44:49,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:44:49,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:44:49,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:44:49,695 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:44:49,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:44:49,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:44:49,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:44:49,698 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:44:49,699 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:44:49,700 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_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c03acb761953b49167bc0508d57daafd17b745 [2020-11-29 19:44:50,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:44:50,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:44:50,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:44:50,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:44:50,115 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:44:50,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2020-11-29 19:44:50,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/bin/uautomizer/data/d8fd82640/724a3f25729f4e78a66526c510a2bf1d/FLAG30e92e07b [2020-11-29 19:44:51,033 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:44:51,034 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2020-11-29 19:44:51,058 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/bin/uautomizer/data/d8fd82640/724a3f25729f4e78a66526c510a2bf1d/FLAG30e92e07b [2020-11-29 19:44:51,243 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/bin/uautomizer/data/d8fd82640/724a3f25729f4e78a66526c510a2bf1d [2020-11-29 19:44:51,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:44:51,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:44:51,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:44:51,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:44:51,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:44:51,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:44:51" (1/1) ... [2020-11-29 19:44:51,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d24ccc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51, skipping insertion in model container [2020-11-29 19:44:51,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:44:51" (1/1) ... [2020-11-29 19:44:51,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:44:51,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:44:51,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:44:51,776 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:44:51,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:44:51,970 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:44:51,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51 WrapperNode [2020-11-29 19:44:51,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:44:51,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:44:51,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:44:51,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:44:51,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51" (1/1) ... [2020-11-29 19:44:52,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51" (1/1) ... [2020-11-29 19:44:52,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:44:52,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:44:52,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:44:52,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:44:52,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51" (1/1) ... [2020-11-29 19:44:52,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51" (1/1) ... [2020-11-29 19:44:52,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51" (1/1) ... [2020-11-29 19:44:52,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51" (1/1) ... [2020-11-29 19:44:52,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51" (1/1) ... [2020-11-29 19:44:52,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51" (1/1) ... [2020-11-29 19:44:52,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51" (1/1) ... [2020-11-29 19:44:52,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:44:52,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:44:52,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:44:52,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:44:52,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/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 19:44:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:44:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:44:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:44:52,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:44:53,559 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:44:53,560 INFO L298 CfgBuilder]: Removed 122 assume(true) statements. [2020-11-29 19:44:53,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:44:53 BoogieIcfgContainer [2020-11-29 19:44:53,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:44:53,565 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:44:53,566 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:44:53,570 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:44:53,570 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:44:53,571 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:44:51" (1/3) ... [2020-11-29 19:44:53,572 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@678cc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:44:53, skipping insertion in model container [2020-11-29 19:44:53,572 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:44:53,573 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:44:51" (2/3) ... [2020-11-29 19:44:53,573 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@678cc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:44:53, skipping insertion in model container [2020-11-29 19:44:53,573 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:44:53,573 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:44:53" (3/3) ... [2020-11-29 19:44:53,576 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2020-11-29 19:44:53,649 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:44:53,649 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:44:53,649 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:44:53,650 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:44:53,650 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:44:53,650 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:44:53,650 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:44:53,650 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:44:53,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states. [2020-11-29 19:44:53,718 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2020-11-29 19:44:53,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:44:53,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:44:53,730 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:44:53,730 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:44:53,730 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:44:53,730 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states. [2020-11-29 19:44:53,751 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2020-11-29 19:44:53,751 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:44:53,751 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:44:53,753 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:44:53,753 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:44:53,767 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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 10#L-1true havoc main_#res;havoc main_#t~ret79, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 5#L822true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 12#L830true main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 8#L917true assume 0 != main_~tmp~8; 63#L894true havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 32#L779-1true [2020-11-29 19:44:53,768 INFO L796 eck$LassoCheckResult]: Loop: 32#L779-1true assume !false; 29#L523true assume test_~splverifierCounter~0 < 4; 55#L524true test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 60#L532true assume !(0 != test_~tmp~3); 65#L532-1true test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 37#L542true assume !(0 != test_~tmp___0~0); 40#L542-1true test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 14#L552true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 24#L560-2true assume !(0 != ~pumpRunning~0); 89#L591true assume !(0 != ~systemActive~0); 82#L598true havoc __utac_acc__Specification1_spec__1_#t~ret76, __utac_acc__Specification1_spec__1_#t~ret77, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 35#L458-1true __utac_acc__Specification1_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret76;havoc __utac_acc__Specification1_spec__1_#t~ret76; 30#L779true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 32#L779-1true [2020-11-29 19:44:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:44:53,776 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 19:44:53,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:44:53,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31100394] [2020-11-29 19:44:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:44:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:44:54,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:44:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:44:54,319 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:44:54,365 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:44:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:44:54,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1680236923, now seen corresponding path program 1 times [2020-11-29 19:44:54,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:44:54,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918550476] [2020-11-29 19:44:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:44:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:44:54,449 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 19:44:54,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918550476] [2020-11-29 19:44:54,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:44:54,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:44:54,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901270768] [2020-11-29 19:44:54,461 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:44:54,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:44:54,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:44:54,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:44:54,485 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2020-11-29 19:44:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:44:54,560 INFO L93 Difference]: Finished difference Result 84 states and 116 transitions. [2020-11-29 19:44:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:44:54,566 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2020-11-29 19:44:54,570 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2020-11-29 19:44:54,585 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 77 states and 108 transitions. [2020-11-29 19:44:54,587 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2020-11-29 19:44:54,588 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2020-11-29 19:44:54,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 108 transitions. [2020-11-29 19:44:54,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:44:54,591 INFO L691 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2020-11-29 19:44:54,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 108 transitions. [2020-11-29 19:44:54,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-29 19:44:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-29 19:44:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2020-11-29 19:44:54,636 INFO L714 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2020-11-29 19:44:54,636 INFO L594 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2020-11-29 19:44:54,636 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:44:54,637 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 77 states and 108 transitions. [2020-11-29 19:44:54,644 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2020-11-29 19:44:54,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:44:54,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:44:54,648 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:44:54,649 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:44:54,649 INFO L794 eck$LassoCheckResult]: Stem: 225#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 194#L-1 havoc main_#res;havoc main_#t~ret79, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 186#L822 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 187#L830 main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 192#L917 assume 0 != main_~tmp~8; 193#L894 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 215#L779-1 [2020-11-29 19:44:54,650 INFO L796 eck$LassoCheckResult]: Loop: 215#L779-1 assume !false; 217#L523 assume test_~splverifierCounter~0 < 4; 218#L524 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 248#L532 assume !(0 != test_~tmp~3); 253#L532-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 222#L542 assume !(0 != test_~tmp___0~0); 223#L542-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 198#L552 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 199#L560-2 assume !(0 != ~pumpRunning~0); 208#L591 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 256#L623 assume !(0 == ~pumpRunning~0); 251#L598 havoc __utac_acc__Specification1_spec__1_#t~ret76, __utac_acc__Specification1_spec__1_#t~ret77, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 221#L458-1 __utac_acc__Specification1_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret76;havoc __utac_acc__Specification1_spec__1_#t~ret76; 214#L779 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 215#L779-1 [2020-11-29 19:44:54,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:44:54,657 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 19:44:54,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:44:54,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019126826] [2020-11-29 19:44:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:44:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:44:54,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:44:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:44:54,921 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:44:54,957 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:44:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:44:54,963 INFO L82 PathProgramCache]: Analyzing trace with hash -589506371, now seen corresponding path program 1 times [2020-11-29 19:44:54,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:44:54,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693169451] [2020-11-29 19:44:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:44:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:44:54,999 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 19:44:54,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693169451] [2020-11-29 19:44:54,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:44:54,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:44:55,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312029585] [2020-11-29 19:44:55,000 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:44:55,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:44:55,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:44:55,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:44:55,002 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. cyclomatic complexity: 33 Second operand 3 states. [2020-11-29 19:44:55,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:44:55,130 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2020-11-29 19:44:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:44:55,132 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 159 transitions. [2020-11-29 19:44:55,134 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 82 [2020-11-29 19:44:55,136 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 118 states and 159 transitions. [2020-11-29 19:44:55,137 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 118 [2020-11-29 19:44:55,137 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 118 [2020-11-29 19:44:55,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 159 transitions. [2020-11-29 19:44:55,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:44:55,139 INFO L691 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2020-11-29 19:44:55,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 159 transitions. [2020-11-29 19:44:55,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-11-29 19:44:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-11-29 19:44:55,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 159 transitions. [2020-11-29 19:44:55,150 INFO L714 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2020-11-29 19:44:55,150 INFO L594 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2020-11-29 19:44:55,151 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:44:55,151 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 159 transitions. [2020-11-29 19:44:55,152 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 82 [2020-11-29 19:44:55,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:44:55,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:44:55,154 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:44:55,154 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 19:44:55,154 INFO L794 eck$LassoCheckResult]: Stem: 425#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 395#L-1 havoc main_#res;havoc main_#t~ret79, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 385#L822 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 386#L830 main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 391#L917 assume 0 != main_~tmp~8; 392#L894 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 457#L779-1 [2020-11-29 19:44:55,155 INFO L796 eck$LassoCheckResult]: Loop: 457#L779-1 assume !false; 468#L523 assume test_~splverifierCounter~0 < 4; 446#L524 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 447#L532 assume !(0 != test_~tmp~3); 453#L532-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 422#L542 assume !(0 != test_~tmp___0~0); 423#L542-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 398#L552 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 399#L560-2 assume !(0 != ~pumpRunning~0); 409#L591 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 464#L623 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 428#L498 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 429#L503 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 430#L743 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 431#L743-2 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 381#L749 processEnvironment_#t~ret56 := isHighWaterLevel_#res;processEnvironment_~tmp~4 := processEnvironment_#t~ret56;havoc processEnvironment_#t~ret56; 382#L627 assume !(0 != processEnvironment_~tmp~4); 454#L598 havoc __utac_acc__Specification1_spec__1_#t~ret76, __utac_acc__Specification1_spec__1_#t~ret77, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 476#L458-1 __utac_acc__Specification1_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret76;havoc __utac_acc__Specification1_spec__1_#t~ret76; 473#L779 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 457#L779-1 [2020-11-29 19:44:55,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:44:55,156 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 19:44:55,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:44:55,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940570505] [2020-11-29 19:44:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:44:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:44:55,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:44:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:44:55,355 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:44:55,373 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:44:55,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:44:55,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1033634391, now seen corresponding path program 1 times [2020-11-29 19:44:55,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:44:55,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445425623] [2020-11-29 19:44:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:44:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:44:55,390 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:44:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:44:55,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:44:55,404 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:44:55,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:44:55,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1018922417, now seen corresponding path program 1 times [2020-11-29 19:44:55,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:44:55,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945113312] [2020-11-29 19:44:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:44:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:44:55,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:44:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:44:55,540 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:44:55,560 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:44:55,785 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-11-29 19:46:27,511 WARN L193 SmtUtils]: Spent 1.53 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 19:47:26,054 WARN L193 SmtUtils]: Spent 58.53 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 19:47:26,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:47:26 BoogieIcfgContainer [2020-11-29 19:47:26,223 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:47:26,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:47:26,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:47:26,237 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:47:26,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:44:53" (3/4) ... [2020-11-29 19:47:26,241 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 19:47:26,362 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ab25f5b2-4a21-45aa-885f-6f2ecbbd677d/bin/uautomizer/witness.graphml [2020-11-29 19:47:26,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:47:26,365 INFO L168 Benchmark]: Toolchain (without parser) took 155112.28 ms. Allocated memory was 132.1 MB in the beginning and 172.0 MB in the end (delta: 39.8 MB). Free memory was 102.8 MB in the beginning and 141.4 MB in the end (delta: -38.6 MB). Peak memory consumption was 100.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:47:26,366 INFO L168 Benchmark]: CDTParser took 1.68 ms. Allocated memory is still 92.3 MB. Free memory is still 49.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:47:26,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.04 ms. Allocated memory is still 132.1 MB. Free memory was 102.3 MB in the beginning and 98.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:47:26,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.14 ms. Allocated memory is still 132.1 MB. Free memory was 98.3 MB in the beginning and 95.2 MB in the end (delta: 3.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:47:26,368 INFO L168 Benchmark]: Boogie Preprocessor took 85.65 ms. Allocated memory is still 132.1 MB. Free memory was 95.2 MB in the beginning and 93.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:47:26,369 INFO L168 Benchmark]: RCFGBuilder took 1374.31 ms. Allocated memory is still 132.1 MB. Free memory was 93.1 MB in the beginning and 96.7 MB in the end (delta: -3.6 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:47:26,370 INFO L168 Benchmark]: BuchiAutomizer took 152670.80 ms. Allocated memory was 132.1 MB in the beginning and 172.0 MB in the end (delta: 39.8 MB). Free memory was 96.7 MB in the beginning and 44.3 MB in the end (delta: 52.4 MB). Peak memory consumption was 98.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:47:26,371 INFO L168 Benchmark]: Witness Printer took 126.20 ms. Allocated memory is still 172.0 MB. Free memory was 44.3 MB in the beginning and 141.4 MB in the end (delta: -97.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:47:26,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.68 ms. Allocated memory is still 92.3 MB. Free memory is still 49.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 719.04 ms. Allocated memory is still 132.1 MB. Free memory was 102.3 MB in the beginning and 98.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.14 ms. Allocated memory is still 132.1 MB. Free memory was 98.3 MB in the beginning and 95.2 MB in the end (delta: 3.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.65 ms. Allocated memory is still 132.1 MB. Free memory was 95.2 MB in the beginning and 93.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1374.31 ms. Allocated memory is still 132.1 MB. Free memory was 93.1 MB in the beginning and 96.7 MB in the end (delta: -3.6 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 152670.80 ms. Allocated memory was 132.1 MB in the beginning and 172.0 MB in the end (delta: 39.8 MB). Free memory was 96.7 MB in the beginning and 44.3 MB in the end (delta: 52.4 MB). Peak memory consumption was 98.1 MB. Max. memory is 16.1 GB. * Witness Printer took 126.20 ms. Allocated memory is still 172.0 MB. Free memory was 44.3 MB in the beginning and 141.4 MB in the end (delta: -97.1 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 118 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 152.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 152.0s. 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 118 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 219 SDtfs, 203 SDslu, 48 SDs, 0 SdLazy, 24 SolverSat, 14 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: 522]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=20657} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=0, NULL=20657, NULL=0, NULL=0, NULL=20669, NULL=0, NULL=20684, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@466eceed=74, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29b9a83c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@251ecade=0, NULL=20678, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a0f56b6=0, NULL=20668, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@cff04db=0, retValue_acc=1, tmp___0=0, tmp=0, NULL=0, NULL=0, retValue_acc=0, NULL=20682, tmp___1=0, NULL=20665, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d902906=0, tmp___0=0, NULL=0, NULL=0, NULL=20670, NULL=20662, NULL=20672, cleanupTimeShifts=4, NULL=20667, NULL=20660, NULL=20674, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, NULL=0, NULL=0, NULL=0, retValue_acc=0, \result=0, NULL=20677, tmp___0=0, NULL=20673, retValue_acc=0, NULL=20661, \result=1, head=0, pumpRunning=0, NULL=20676, \result=0, retValue_acc=1, NULL=20685, tmp=0, NULL=0, NULL=20680, NULL=0, NULL=0, tmp=1, NULL=0, NULL=0, NULL=20666, \result=1, NULL=0, NULL=0, NULL=20658, tmp___2=74, NULL=20671, NULL=20663, tmp=1, splverifierCounter=0, NULL=0, \result=0, NULL=20659, NULL=20683, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37c197e8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a37e988=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5afd20bb=0, head=0, tmp=0, NULL=0, NULL=0, NULL=20664, NULL=0, NULL=0, NULL=20679, NULL=20681, NULL=20675} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L583] int pumpRunning = 0; [L584] int systemActive = 1; [L835] int cleanupTimeShifts = 4; [L908] int retValue_acc ; [L909] int tmp ; [L826] int retValue_acc ; [L829] retValue_acc = 1 [L830] return (retValue_acc); [L915] tmp = valid_product() [L917] COND TRUE \read(tmp) [L513] int splverifierCounter ; [L514] int tmp ; [L515] int tmp___0 ; [L516] int tmp___1 ; [L517] int tmp___2 ; [L520] splverifierCounter = 0 Loop: [L522] COND TRUE 1 [L524] COND TRUE splverifierCounter < 4 [L530] tmp = __VERIFIER_nondet_int() [L532] COND FALSE !(\read(tmp)) [L540] tmp___0 = __VERIFIER_nondet_int() [L542] COND FALSE !(\read(tmp___0)) [L550] tmp___2 = __VERIFIER_nondet_int() [L552] COND TRUE \read(tmp___2) [L757] systemActive = 1 [L591] COND FALSE !(\read(pumpRunning)) [L598] COND TRUE \read(systemActive) [L620] int tmp ; [L623] COND TRUE ! pumpRunning [L735] int retValue_acc ; [L736] int tmp ; [L737] int tmp___0 ; [L495] int retValue_acc ; [L498] COND TRUE waterLevel < 2 [L499] retValue_acc = 1 [L500] return (retValue_acc); [L741] tmp = isHighWaterSensorDry() [L743] COND TRUE \read(tmp) [L744] tmp___0 = 0 [L748] retValue_acc = tmp___0 [L749] return (retValue_acc); [L625] tmp = isHighWaterLevel() [L627] COND FALSE !(\read(tmp)) [L772] int tmp ; [L773] int tmp___0 ; [L454] int retValue_acc ; [L457] retValue_acc = methaneLevelCritical [L458] return (retValue_acc); [L777] tmp = isMethaneLevelCritical() [L779] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...