./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product41.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_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/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 08266259dc0ecf0b11540043fa73fc4406b9f127 ................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 00:47:58,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:47:58,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:47:58,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:47:58,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:47:58,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:47:58,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:47:58,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:47:58,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:47:58,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:47:58,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:47:58,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:47:58,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:47:58,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:47:58,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:47:58,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:47:58,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:47:58,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:47:58,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:47:58,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:47:58,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:47:58,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:47:58,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:47:58,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:47:58,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:47:58,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:47:58,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:47:58,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:47:58,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:47:58,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:47:58,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:47:58,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:47:58,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:47:58,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:47:58,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:47:58,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:47:58,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:47:58,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:47:58,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:47:58,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:47:58,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:47:58,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:47:58,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:47:58,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:47:58,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:47:58,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:47:58,781 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:47:58,781 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:47:58,781 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:47:58,782 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:47:58,782 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:47:58,782 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:47:58,784 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:47:58,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:47:58,785 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:47:58,785 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:47:58,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:47:58,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:47:58,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:47:58,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:47:58,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:47:58,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:47:58,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:47:58,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:47:58,796 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:47:58,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:47:58,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:47:58,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:47:58,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:47:58,800 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:47:58,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:47:58,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:47:58,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:47:58,804 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:47:58,805 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:47:58,806 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_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08266259dc0ecf0b11540043fa73fc4406b9f127 [2020-11-30 00:47:59,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:47:59,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:47:59,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:47:59,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:47:59,218 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:47:59,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2020-11-30 00:47:59,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/bin/uautomizer/data/043de3064/c6a0fa5c8eba445ca9ecce7e96ccfced/FLAG7bfb1ea9b [2020-11-30 00:47:59,897 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:47:59,898 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2020-11-30 00:47:59,920 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/bin/uautomizer/data/043de3064/c6a0fa5c8eba445ca9ecce7e96ccfced/FLAG7bfb1ea9b [2020-11-30 00:48:00,193 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/bin/uautomizer/data/043de3064/c6a0fa5c8eba445ca9ecce7e96ccfced [2020-11-30 00:48:00,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:48:00,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:48:00,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:48:00,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:48:00,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:48:00,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:48:00" (1/1) ... [2020-11-30 00:48:00,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfa8484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:00, skipping insertion in model container [2020-11-30 00:48:00,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:48:00" (1/1) ... [2020-11-30 00:48:00,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:48:00,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:48:00,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:48:00,870 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:48:00,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:48:01,006 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:48:01,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:01 WrapperNode [2020-11-30 00:48:01,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:48:01,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:48:01,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:48:01,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:48:01,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:01" (1/1) ... [2020-11-30 00:48:01,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:01" (1/1) ... [2020-11-30 00:48:01,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:48:01,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:48:01,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:48:01,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:48:01,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:01" (1/1) ... [2020-11-30 00:48:01,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:01" (1/1) ... [2020-11-30 00:48:01,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:01" (1/1) ... [2020-11-30 00:48:01,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:01" (1/1) ... [2020-11-30 00:48:01,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:01" (1/1) ... [2020-11-30 00:48:01,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:01" (1/1) ... [2020-11-30 00:48:01,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:01" (1/1) ... [2020-11-30 00:48:01,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:48:01,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:48:01,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:48:01,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:48:01,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/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 [2020-11-30 00:48:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:48:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:48:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:48:01,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:48:02,419 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:48:02,422 INFO L298 CfgBuilder]: Removed 120 assume(true) statements. [2020-11-30 00:48:02,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:48:02 BoogieIcfgContainer [2020-11-30 00:48:02,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:48:02,426 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:48:02,426 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:48:02,432 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:48:02,433 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:48:02,433 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:48:00" (1/3) ... [2020-11-30 00:48:02,435 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a3cf25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:48:02, skipping insertion in model container [2020-11-30 00:48:02,435 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:48:02,436 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:48:01" (2/3) ... [2020-11-30 00:48:02,437 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a3cf25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:48:02, skipping insertion in model container [2020-11-30 00:48:02,437 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:48:02,437 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:48:02" (3/3) ... [2020-11-30 00:48:02,441 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2020-11-30 00:48:02,516 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:48:02,516 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:48:02,516 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:48:02,516 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:48:02,516 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:48:02,517 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:48:02,517 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:48:02,517 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:48:02,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states. [2020-11-30 00:48:02,564 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2020-11-30 00:48:02,564 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:48:02,565 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:48:02,573 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:48:02,573 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:48:02,573 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:48:02,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states. [2020-11-30 00:48:02,581 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2020-11-30 00:48:02,581 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:48:02,581 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:48:02,583 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:48:02,583 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:48:02,588 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~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~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);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~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 14#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; 89#L196true havoc valid_product_#res;havoc valid_product_~retValue_acc~4;havoc valid_product_~retValue_acc~4;valid_product_~retValue_acc~4 := 1;valid_product_#res := valid_product_~retValue_acc~4; 20#L204true main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 12#L906true assume 0 != main_~tmp~8; 58#L883true havoc test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 26#L153-1true [2020-11-30 00:48:02,589 INFO L796 eck$LassoCheckResult]: Loop: 26#L153-1true assume !false; 53#L597true assume test_~splverifierCounter~0 < 4; 75#L598true test_~tmp~4 := test_#t~nondet55;havoc test_#t~nondet55; 81#L606true assume !(0 != test_~tmp~4); 83#L606-1true test_~tmp___0~1 := test_#t~nondet56;havoc test_#t~nondet56; 61#L616true assume !(0 != test_~tmp___0~1); 63#L616-1true test_~tmp___2~0 := test_#t~nondet57;havoc test_#t~nondet57; 41#L626true assume 0 != test_~tmp___2~0; 9#L632-2true assume !(0 != ~pumpRunning~0); 11#L661true assume !(0 != ~systemActive~0); 85#L668true havoc __utac_acc__Specification4_spec__1_#t~ret17, __utac_acc__Specification4_spec__1_#t~ret18, __utac_acc__Specification4_spec__1_~tmp~0, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~0;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 8#L124true __utac_acc__Specification4_spec__1_#t~ret17 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~0 := __utac_acc__Specification4_spec__1_#t~ret17;havoc __utac_acc__Specification4_spec__1_#t~ret17; 30#L153true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0); 26#L153-1true [2020-11-30 00:48:02,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:48:02,596 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-30 00:48:02,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:48:02,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570132888] [2020-11-30 00:48:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:48:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:48:03,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:48:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:48:03,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:48:03,356 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:48:03,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:48:03,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1681191228, now seen corresponding path program 1 times [2020-11-30 00:48:03,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:48:03,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239388554] [2020-11-30 00:48:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:48:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:48:03,378 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:48:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:48:03,396 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:48:03,409 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:48:03,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:48:03,412 INFO L82 PathProgramCache]: Analyzing trace with hash 33087710, now seen corresponding path program 1 times [2020-11-30 00:48:03,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:48:03,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049975607] [2020-11-30 00:48:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:48:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:48:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:48:03,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049975607] [2020-11-30 00:48:03,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:48:03,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:48:03,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769982052] [2020-11-30 00:48:03,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:48:03,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:48:03,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:48:03,786 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 6 states. [2020-11-30 00:48:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:48:04,074 INFO L93 Difference]: Finished difference Result 84 states and 115 transitions. [2020-11-30 00:48:04,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:48:04,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 115 transitions. [2020-11-30 00:48:04,084 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2020-11-30 00:48:04,095 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 77 states and 108 transitions. [2020-11-30 00:48:04,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2020-11-30 00:48:04,100 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2020-11-30 00:48:04,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 108 transitions. [2020-11-30 00:48:04,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:48:04,103 INFO L691 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2020-11-30 00:48:04,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 108 transitions. [2020-11-30 00:48:04,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-30 00:48:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-30 00:48:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2020-11-30 00:48:04,147 INFO L714 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2020-11-30 00:48:04,147 INFO L594 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2020-11-30 00:48:04,147 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:48:04,148 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 77 states and 108 transitions. [2020-11-30 00:48:04,156 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2020-11-30 00:48:04,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:48:04,158 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:48:04,159 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:48:04,160 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:48:04,160 INFO L794 eck$LassoCheckResult]: Stem: 232#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~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~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);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~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 210#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; 211#L196 havoc valid_product_#res;havoc valid_product_~retValue_acc~4;havoc valid_product_~retValue_acc~4;valid_product_~retValue_acc~4 := 1;valid_product_#res := valid_product_~retValue_acc~4; 219#L204 main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 206#L906 assume 0 != main_~tmp~8; 207#L883 havoc test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 204#L153-1 [2020-11-30 00:48:04,162 INFO L796 eck$LassoCheckResult]: Loop: 204#L153-1 assume !false; 224#L597 assume test_~splverifierCounter~0 < 4; 247#L598 test_~tmp~4 := test_#t~nondet55;havoc test_#t~nondet55; 265#L606 assume !(0 != test_~tmp~4); 262#L606-1 test_~tmp___0~1 := test_#t~nondet56;havoc test_#t~nondet56; 254#L616 assume !(0 != test_~tmp___0~1); 255#L616-1 test_~tmp___2~0 := test_#t~nondet57;havoc test_#t~nondet57; 234#L626 assume 0 != test_~tmp___2~0; 194#L632-2 assume !(0 != ~pumpRunning~0); 201#L661 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 205#L693 assume !(0 == ~pumpRunning~0); 263#L668 havoc __utac_acc__Specification4_spec__1_#t~ret17, __utac_acc__Specification4_spec__1_#t~ret18, __utac_acc__Specification4_spec__1_~tmp~0, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~0;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 199#L124 __utac_acc__Specification4_spec__1_#t~ret17 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~0 := __utac_acc__Specification4_spec__1_#t~ret17;havoc __utac_acc__Specification4_spec__1_#t~ret17; 200#L153 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0); 204#L153-1 [2020-11-30 00:48:04,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:48:04,164 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-30 00:48:04,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:48:04,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021092600] [2020-11-30 00:48:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:48:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:48:04,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:48:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:48:04,316 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:48:04,352 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:48:04,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:48:04,355 INFO L82 PathProgramCache]: Analyzing trace with hash -619089827, now seen corresponding path program 1 times [2020-11-30 00:48:04,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:48:04,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387501865] [2020-11-30 00:48:04,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:48:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:48:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:48:04,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387501865] [2020-11-30 00:48:04,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:48:04,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:48:04,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282235729] [2020-11-30 00:48:04,380 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:48:04,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:48:04,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:48:04,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:48:04,382 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. cyclomatic complexity: 33 Second operand 3 states. [2020-11-30 00:48:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:48:04,505 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2020-11-30 00:48:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:48:04,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 159 transitions. [2020-11-30 00:48:04,510 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 82 [2020-11-30 00:48:04,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 118 states and 159 transitions. [2020-11-30 00:48:04,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 118 [2020-11-30 00:48:04,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 118 [2020-11-30 00:48:04,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 159 transitions. [2020-11-30 00:48:04,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:48:04,521 INFO L691 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2020-11-30 00:48:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 159 transitions. [2020-11-30 00:48:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-11-30 00:48:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-11-30 00:48:04,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 159 transitions. [2020-11-30 00:48:04,538 INFO L714 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2020-11-30 00:48:04,539 INFO L594 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2020-11-30 00:48:04,539 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:48:04,539 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 159 transitions. [2020-11-30 00:48:04,543 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 82 [2020-11-30 00:48:04,543 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:48:04,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:48:04,546 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:48:04,546 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] [2020-11-30 00:48:04,547 INFO L794 eck$LassoCheckResult]: Stem: 433#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~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~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);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~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 410#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; 411#L196 havoc valid_product_#res;havoc valid_product_~retValue_acc~4;havoc valid_product_~retValue_acc~4;valid_product_~retValue_acc~4 := 1;valid_product_#res := valid_product_~retValue_acc~4; 420#L204 main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 406#L906 assume 0 != main_~tmp~8; 407#L883 havoc test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 404#L153-1 [2020-11-30 00:48:04,549 INFO L796 eck$LassoCheckResult]: Loop: 404#L153-1 assume !false; 425#L597 assume test_~splverifierCounter~0 < 4; 450#L598 test_~tmp~4 := test_#t~nondet55;havoc test_#t~nondet55; 470#L606 assume !(0 != test_~tmp~4); 464#L606-1 test_~tmp___0~1 := test_#t~nondet56;havoc test_#t~nondet56; 455#L616 assume !(0 != test_~tmp___0~1); 456#L616-1 test_~tmp___2~0 := test_#t~nondet57;havoc test_#t~nondet57; 435#L626 assume 0 != test_~tmp___2~0; 393#L632-2 assume !(0 != ~pumpRunning~0); 402#L661 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 405#L693 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret78, isHighWaterLevel_~retValue_acc~10, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~10;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 444#L132 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 445#L137 isHighWaterLevel_#t~ret78 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret78;havoc isHighWaterLevel_#t~ret78; 446#L813 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~2 := 0; 447#L813-2 isHighWaterLevel_~retValue_acc~10 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~10; 414#L819 processEnvironment_#t~ret59 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret59;havoc processEnvironment_#t~ret59; 415#L697 assume !(0 != processEnvironment_~tmp~5); 465#L668 havoc __utac_acc__Specification4_spec__1_#t~ret17, __utac_acc__Specification4_spec__1_#t~ret18, __utac_acc__Specification4_spec__1_~tmp~0, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~0;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 400#L124 __utac_acc__Specification4_spec__1_#t~ret17 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~0 := __utac_acc__Specification4_spec__1_#t~ret17;havoc __utac_acc__Specification4_spec__1_#t~ret17; 401#L153 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0); 404#L153-1 [2020-11-30 00:48:04,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:48:04,550 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-30 00:48:04,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:48:04,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9683253] [2020-11-30 00:48:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:48:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:48:04,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:48:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:48:04,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:48:04,694 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:48:04,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:48:04,697 INFO L82 PathProgramCache]: Analyzing trace with hash -21695255, now seen corresponding path program 1 times [2020-11-30 00:48:04,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:48:04,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975535416] [2020-11-30 00:48:04,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:48:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:48:04,713 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:48:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:48:04,720 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:48:04,746 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:48:04,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:48:04,747 INFO L82 PathProgramCache]: Analyzing trace with hash -6983281, now seen corresponding path program 1 times [2020-11-30 00:48:04,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:48:04,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431540139] [2020-11-30 00:48:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:48:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:48:04,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:48:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:48:04,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:48:04,858 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:48:05,025 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-11-30 00:49:40,821 WARN L193 SmtUtils]: Spent 1.60 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-30 00:50:46,721 WARN L193 SmtUtils]: Spent 1.10 m on a formula simplification that was a NOOP. DAG size: 433 [2020-11-30 00:50:47,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:50:47 BoogieIcfgContainer [2020-11-30 00:50:47,034 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:50:47,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:50:47,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:50:47,035 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:50:47,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:48:02" (3/4) ... [2020-11-30 00:50:47,040 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:50:47,120 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a47ff09c-6ea3-4c26-b6c7-bbe75c79ce3b/bin/uautomizer/witness.graphml [2020-11-30 00:50:47,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:50:47,128 INFO L168 Benchmark]: Toolchain (without parser) took 166929.76 ms. Allocated memory was 98.6 MB in the beginning and 146.8 MB in the end (delta: 48.2 MB). Free memory was 68.7 MB in the beginning and 58.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 57.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:50:47,128 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 75.5 MB. Free memory is still 37.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:50:47,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 808.12 ms. Allocated memory is still 98.6 MB. Free memory was 68.7 MB in the beginning and 65.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:50:47,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.64 ms. Allocated memory is still 98.6 MB. Free memory was 65.5 MB in the beginning and 62.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:50:47,136 INFO L168 Benchmark]: Boogie Preprocessor took 71.94 ms. Allocated memory is still 98.6 MB. Free memory was 62.1 MB in the beginning and 60.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:50:47,138 INFO L168 Benchmark]: RCFGBuilder took 1266.40 ms. Allocated memory is still 98.6 MB. Free memory was 60.0 MB in the beginning and 43.7 MB in the end (delta: 16.3 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:50:47,139 INFO L168 Benchmark]: BuchiAutomizer took 164608.43 ms. Allocated memory was 98.6 MB in the beginning and 146.8 MB in the end (delta: 48.2 MB). Free memory was 43.7 MB in the beginning and 61.6 MB in the end (delta: -17.9 MB). Peak memory consumption was 61.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:50:47,140 INFO L168 Benchmark]: Witness Printer took 91.28 ms. Allocated memory is still 146.8 MB. Free memory was 61.6 MB in the beginning and 58.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:50:47,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 75.5 MB. Free memory is still 37.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 808.12 ms. Allocated memory is still 98.6 MB. Free memory was 68.7 MB in the beginning and 65.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.64 ms. Allocated memory is still 98.6 MB. Free memory was 65.5 MB in the beginning and 62.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.94 ms. Allocated memory is still 98.6 MB. Free memory was 62.1 MB in the beginning and 60.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1266.40 ms. Allocated memory is still 98.6 MB. Free memory was 60.0 MB in the beginning and 43.7 MB in the end (delta: 16.3 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 164608.43 ms. Allocated memory was 98.6 MB in the beginning and 146.8 MB in the end (delta: 48.2 MB). Free memory was 43.7 MB in the beginning and 61.6 MB in the end (delta: -17.9 MB). Peak memory consumption was 61.3 MB. Max. memory is 16.1 GB. * Witness Printer took 91.28 ms. Allocated memory is still 146.8 MB. Free memory was 61.6 MB in the beginning and 58.6 MB in the end (delta: 3.0 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 6 locations. The remainder module has 118 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 164.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 163.8s. Construction of modules took 0.2s. 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: 216 SDtfs, 427 SDslu, 50 SDs, 0 SdLazy, 29 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 596]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=11829} State at position 1 is {NULL=0, NULL=0, NULL=11837, NULL=0, NULL=11829, NULL=0, NULL=11833, NULL=0, NULL=11858, NULL=11836, NULL=0, NULL=0, NULL=11830, methaneLevelCritical=0, NULL=11839, tmp___0=0, NULL=0, tmp=0, NULL=0, NULL=11841, NULL=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1baf17da=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78d7d600=0, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=11856, cleanupTimeShifts=4, NULL=11832, NULL=11835, NULL=11840, NULL=0, systemActive=1, waterLevel=1, NULL=11846, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=11847, \result=0, NULL=0, NULL=11844, NULL=0, NULL=0, retValue_acc=0, NULL=11848, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=11845, \result=0, NULL=11851, retValue_acc=1, NULL=0, tmp=1, NULL=0, \result=1, NULL=11852, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43a9192a=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2dd0c6a5=0, NULL=11853, tmp=1, NULL=0, NULL=0, NULL=11831, retValue_acc=0, NULL=0, NULL=11838, tmp=1, tmp___2=70, NULL=0, tmp___0=0, splverifierCounter=0, NULL=0, NULL=11843, NULL=11849, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69860bad=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b05457a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f21e967=70, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22ef34f4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@185c8029=0, head=0, tmp=0, NULL=0, NULL=11855, NULL=11842, NULL=11854, NULL=0, NULL=11857, NULL=11850} - 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; [L387] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L654] int pumpRunning = 0; [L655] int systemActive = 1; [L824] int cleanupTimeShifts = 4; [L897] int retValue_acc ; [L898] int tmp ; [L200] int retValue_acc ; [L203] retValue_acc = 1 [L204] return (retValue_acc); [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) [L587] int splverifierCounter ; [L588] int tmp ; [L589] int tmp___0 ; [L590] int tmp___1 ; [L591] int tmp___2 ; [L594] splverifierCounter = 0 Loop: [L596] COND TRUE 1 [L598] COND TRUE splverifierCounter < 4 [L604] tmp = __VERIFIER_nondet_int() [L606] COND FALSE !(\read(tmp)) [L614] tmp___0 = __VERIFIER_nondet_int() [L616] COND FALSE !(\read(tmp___0)) [L624] tmp___2 = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp___2) [L661] COND FALSE !(\read(pumpRunning)) [L668] COND TRUE \read(systemActive) [L690] int tmp ; [L693] COND TRUE ! pumpRunning [L805] int retValue_acc ; [L806] int tmp ; [L807] int tmp___0 ; [L129] int retValue_acc ; [L132] COND TRUE waterLevel < 2 [L133] retValue_acc = 1 [L134] return (retValue_acc); [L811] tmp = isHighWaterSensorDry() [L813] COND TRUE \read(tmp) [L814] tmp___0 = 0 [L818] retValue_acc = tmp___0 [L819] return (retValue_acc); [L695] tmp = isHighWaterLevel() [L697] COND FALSE !(\read(tmp)) [L146] int tmp ; [L147] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L151] tmp = getWaterLevel() [L153] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...