./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product59.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_e92dab10-43b1-485b-b349-39a0696e7151/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/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 3fa33aaad762eafbf16a24d8c461c30e65889576 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 00:15:19,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:15:19,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:15:19,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:15:19,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:15:19,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:15:19,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:15:19,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:15:19,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:15:19,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:15:19,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:15:19,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:15:19,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:15:19,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:15:19,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:15:19,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:15:19,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:15:19,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:15:19,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:15:19,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:15:19,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:15:19,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:15:19,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:15:19,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:15:19,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:15:19,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:15:19,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:15:19,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:15:19,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:15:19,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:15:19,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:15:19,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:15:19,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:15:19,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:15:19,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:15:19,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:15:19,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:15:19,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:15:19,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:15:19,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:15:19,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:15:19,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:15:19,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:15:19,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:15:19,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:15:19,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:15:19,752 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:15:19,753 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:15:19,753 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:15:19,753 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:15:19,753 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:15:19,754 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:15:19,754 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:15:19,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:15:19,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:15:19,755 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:15:19,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:15:19,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:15:19,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:15:19,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:15:19,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:15:19,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:15:19,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:15:19,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:15:19,758 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:15:19,758 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:15:19,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:15:19,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:15:19,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:15:19,759 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:15:19,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:15:19,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:15:19,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:15:19,764 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:15:19,765 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:15:19,765 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_e92dab10-43b1-485b-b349-39a0696e7151/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fa33aaad762eafbf16a24d8c461c30e65889576 [2020-11-30 00:15:20,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:15:20,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:15:20,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:15:20,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:15:20,162 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:15:20,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c [2020-11-30 00:15:20,259 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/bin/uautomizer/data/89469cb16/8bebf2e7899b4293b2127f2001461c44/FLAG21fe7e3c7 [2020-11-30 00:15:20,888 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:15:20,889 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c [2020-11-30 00:15:20,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/bin/uautomizer/data/89469cb16/8bebf2e7899b4293b2127f2001461c44/FLAG21fe7e3c7 [2020-11-30 00:15:21,177 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/bin/uautomizer/data/89469cb16/8bebf2e7899b4293b2127f2001461c44 [2020-11-30 00:15:21,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:15:21,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:15:21,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:15:21,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:15:21,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:15:21,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:15:21" (1/1) ... [2020-11-30 00:15:21,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4bf25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21, skipping insertion in model container [2020-11-30 00:15:21,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:15:21" (1/1) ... [2020-11-30 00:15:21,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:15:21,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:15:21,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:15:21,704 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:15:21,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:15:21,852 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:15:21,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21 WrapperNode [2020-11-30 00:15:21,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:15:21,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:15:21,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:15:21,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:15:21,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21" (1/1) ... [2020-11-30 00:15:21,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21" (1/1) ... [2020-11-30 00:15:21,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:15:21,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:15:21,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:15:21,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:15:21,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21" (1/1) ... [2020-11-30 00:15:22,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21" (1/1) ... [2020-11-30 00:15:22,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21" (1/1) ... [2020-11-30 00:15:22,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21" (1/1) ... [2020-11-30 00:15:22,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21" (1/1) ... [2020-11-30 00:15:22,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21" (1/1) ... [2020-11-30 00:15:22,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21" (1/1) ... [2020-11-30 00:15:22,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:15:22,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:15:22,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:15:22,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:15:22,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/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 00:15:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:15:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:15:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:15:22,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:15:23,531 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:15:23,534 INFO L298 CfgBuilder]: Removed 204 assume(true) statements. [2020-11-30 00:15:23,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:23 BoogieIcfgContainer [2020-11-30 00:15:23,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:15:23,538 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:15:23,538 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:15:23,545 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:15:23,545 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:15:23,546 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:15:21" (1/3) ... [2020-11-30 00:15:23,548 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4b4ffc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:15:23, skipping insertion in model container [2020-11-30 00:15:23,549 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:15:23,549 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:21" (2/3) ... [2020-11-30 00:15:23,549 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4b4ffc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:15:23, skipping insertion in model container [2020-11-30 00:15:23,549 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:15:23,550 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:23" (3/3) ... [2020-11-30 00:15:23,552 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product59.cil.c [2020-11-30 00:15:23,610 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:15:23,610 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:15:23,610 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:15:23,611 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:15:23,611 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:15:23,611 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:15:23,611 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:15:23,611 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:15:23,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 141 states. [2020-11-30 00:15:23,667 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 91 [2020-11-30 00:15:23,667 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:15:23,667 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:15:23,678 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:23,678 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:23,678 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:15:23,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 141 states. [2020-11-30 00:15:23,691 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 91 [2020-11-30 00:15:23,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:15:23,692 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:15:23,693 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:23,693 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:23,700 INFO L794 eck$LassoCheckResult]: Stem: 124#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 16#L-1true havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 46#L524true havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 54#L532true main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 55#L488true assume 0 != main_~tmp~7; 24#L461true ~methAndRunningLastTime~0 := 0; 101#L369true havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 105#L380-1true [2020-11-30 00:15:23,701 INFO L796 eck$LassoCheckResult]: Loop: 105#L380-1true assume !false; 18#L307true assume test_~splverifierCounter~0 < 4; 122#L308true test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 138#L316true assume !(0 != test_~tmp~5); 139#L316-1true test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 36#L326true assume !(0 != test_~tmp___0~2); 39#L326-1true test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 111#L336true assume 0 != test_~tmp___2~0; 67#L342-1true assume !(0 != ~pumpRunning~0); 25#L70true assume !(0 != ~systemActive~0); 131#L77true havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 103#L947-2true __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 100#L380true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 105#L380-1true [2020-11-30 00:15:23,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:23,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-30 00:15:23,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:23,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537425956] [2020-11-30 00:15:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:24,008 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:24,160 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:24,209 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:24,211 INFO L82 PathProgramCache]: Analyzing trace with hash 13773845, now seen corresponding path program 1 times [2020-11-30 00:15:24,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:24,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105248952] [2020-11-30 00:15:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:24,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:24,230 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:24,236 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:24,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:24,239 INFO L82 PathProgramCache]: Analyzing trace with hash 847070351, now seen corresponding path program 1 times [2020-11-30 00:15:24,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:24,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547073220] [2020-11-30 00:15:24,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:24,484 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 00:15:24,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547073220] [2020-11-30 00:15:24,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:24,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:15:24,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932184172] [2020-11-30 00:15:24,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:24,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:15:24,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:15:24,633 INFO L87 Difference]: Start difference. First operand 141 states. Second operand 6 states. [2020-11-30 00:15:25,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:25,016 INFO L93 Difference]: Finished difference Result 322 states and 463 transitions. [2020-11-30 00:15:25,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:15:25,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 322 states and 463 transitions. [2020-11-30 00:15:25,041 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 207 [2020-11-30 00:15:25,053 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 322 states to 301 states and 442 transitions. [2020-11-30 00:15:25,054 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 301 [2020-11-30 00:15:25,063 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 301 [2020-11-30 00:15:25,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 301 states and 442 transitions. [2020-11-30 00:15:25,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:15:25,074 INFO L691 BuchiCegarLoop]: Abstraction has 301 states and 442 transitions. [2020-11-30 00:15:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states and 442 transitions. [2020-11-30 00:15:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 175. [2020-11-30 00:15:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-11-30 00:15:25,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 256 transitions. [2020-11-30 00:15:25,156 INFO L714 BuchiCegarLoop]: Abstraction has 175 states and 256 transitions. [2020-11-30 00:15:25,157 INFO L594 BuchiCegarLoop]: Abstraction has 175 states and 256 transitions. [2020-11-30 00:15:25,157 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:15:25,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 175 states and 256 transitions. [2020-11-30 00:15:25,161 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 120 [2020-11-30 00:15:25,162 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:15:25,162 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:15:25,163 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:25,163 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:25,163 INFO L794 eck$LassoCheckResult]: Stem: 610#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 511#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 512#L524 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 556#L532 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 564#L488 assume 0 != main_~tmp~7; 525#L461 ~methAndRunningLastTime~0 := 0; 526#L369 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 533#L380-1 [2020-11-30 00:15:25,164 INFO L796 eck$LassoCheckResult]: Loop: 533#L380-1 assume !false; 516#L307 assume test_~splverifierCounter~0 < 4; 517#L308 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 609#L316 assume !(0 != test_~tmp~5); 612#L316-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 546#L326 assume !(0 != test_~tmp___0~2); 548#L326-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 550#L336 assume 0 != test_~tmp___2~0; 575#L342-1 assume !(0 != ~pumpRunning~0); 484#L70 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 527#L128 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 542#L102-1 assume !(0 == ~pumpRunning~0); 509#L77 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 603#L947-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 602#L380 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 533#L380-1 [2020-11-30 00:15:25,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:25,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-30 00:15:25,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:25,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400080904] [2020-11-30 00:15:25,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:25,275 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:25,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:25,409 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:25,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:25,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1366037982, now seen corresponding path program 1 times [2020-11-30 00:15:25,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:25,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228762236] [2020-11-30 00:15:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:25,468 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 00:15:25,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228762236] [2020-11-30 00:15:25,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:25,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:15:25,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108058587] [2020-11-30 00:15:25,470 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:15:25,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:25,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:15:25,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:15:25,471 INFO L87 Difference]: Start difference. First operand 175 states and 256 transitions. cyclomatic complexity: 84 Second operand 3 states. [2020-11-30 00:15:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:25,643 INFO L93 Difference]: Finished difference Result 217 states and 302 transitions. [2020-11-30 00:15:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:15:25,644 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 217 states and 302 transitions. [2020-11-30 00:15:25,648 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2020-11-30 00:15:25,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 217 states to 217 states and 302 transitions. [2020-11-30 00:15:25,657 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 217 [2020-11-30 00:15:25,657 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2020-11-30 00:15:25,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 302 transitions. [2020-11-30 00:15:25,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:15:25,659 INFO L691 BuchiCegarLoop]: Abstraction has 217 states and 302 transitions. [2020-11-30 00:15:25,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states and 302 transitions. [2020-11-30 00:15:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-30 00:15:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-30 00:15:25,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 302 transitions. [2020-11-30 00:15:25,682 INFO L714 BuchiCegarLoop]: Abstraction has 217 states and 302 transitions. [2020-11-30 00:15:25,682 INFO L594 BuchiCegarLoop]: Abstraction has 217 states and 302 transitions. [2020-11-30 00:15:25,682 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:15:25,682 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 217 states and 302 transitions. [2020-11-30 00:15:25,693 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2020-11-30 00:15:25,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:15:25,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:15:25,695 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:25,695 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:25,696 INFO L794 eck$LassoCheckResult]: Stem: 1021#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 908#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 909#L524 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 953#L532 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 961#L488 assume 0 != main_~tmp~7; 923#L461 ~methAndRunningLastTime~0 := 0; 924#L369 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1006#L380-1 [2020-11-30 00:15:25,696 INFO L796 eck$LassoCheckResult]: Loop: 1006#L380-1 assume !false; 913#L307 assume test_~splverifierCounter~0 < 4; 914#L308 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 1020#L316 assume !(0 != test_~tmp~5); 1023#L316-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 942#L326 assume !(0 != test_~tmp___0~2); 944#L326-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 947#L336 assume 0 != test_~tmp___2~0; 974#L342-1 assume !(0 != ~pumpRunning~0); 975#L70 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 938#L128 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 939#L102-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 920#L987-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 921#L992-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 960#L248-3 assume !(0 != isHighWaterLevel_~tmp~3);isHighWaterLevel_~tmp___0~0 := 1; 973#L248-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 957#L254-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 905#L106-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 906#L77 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 1007#L947-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 1008#L380 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 1006#L380-1 [2020-11-30 00:15:25,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:25,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-30 00:15:25,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:25,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912757528] [2020-11-30 00:15:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:25,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:25,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:25,906 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:25,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:25,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1305577228, now seen corresponding path program 1 times [2020-11-30 00:15:25,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:25,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918014443] [2020-11-30 00:15:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:25,974 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 00:15:25,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918014443] [2020-11-30 00:15:25,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:25,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:15:25,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630320802] [2020-11-30 00:15:25,976 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:15:25,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:25,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:15:25,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:15:25,977 INFO L87 Difference]: Start difference. First operand 217 states and 302 transitions. cyclomatic complexity: 88 Second operand 4 states. [2020-11-30 00:15:26,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:26,110 INFO L93 Difference]: Finished difference Result 421 states and 579 transitions. [2020-11-30 00:15:26,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:15:26,111 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 421 states and 579 transitions. [2020-11-30 00:15:26,118 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 300 [2020-11-30 00:15:26,124 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 421 states to 421 states and 579 transitions. [2020-11-30 00:15:26,124 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 421 [2020-11-30 00:15:26,125 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 421 [2020-11-30 00:15:26,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 421 states and 579 transitions. [2020-11-30 00:15:26,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:15:26,127 INFO L691 BuchiCegarLoop]: Abstraction has 421 states and 579 transitions. [2020-11-30 00:15:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states and 579 transitions. [2020-11-30 00:15:26,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 229. [2020-11-30 00:15:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-11-30 00:15:26,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 314 transitions. [2020-11-30 00:15:26,148 INFO L714 BuchiCegarLoop]: Abstraction has 229 states and 314 transitions. [2020-11-30 00:15:26,148 INFO L594 BuchiCegarLoop]: Abstraction has 229 states and 314 transitions. [2020-11-30 00:15:26,148 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:15:26,148 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 229 states and 314 transitions. [2020-11-30 00:15:26,150 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 160 [2020-11-30 00:15:26,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:15:26,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:15:26,155 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:26,155 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:26,155 INFO L794 eck$LassoCheckResult]: Stem: 1679#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1560#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 1561#L524 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 1612#L532 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 1621#L488 assume 0 != main_~tmp~7; 1579#L461 ~methAndRunningLastTime~0 := 0; 1580#L369 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1586#L380-1 [2020-11-30 00:15:26,156 INFO L796 eck$LassoCheckResult]: Loop: 1586#L380-1 assume !false; 1738#L307 assume test_~splverifierCounter~0 < 4; 1737#L308 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 1736#L316 assume !(0 != test_~tmp~5); 1685#L316-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 1598#L326 assume !(0 != test_~tmp___0~2); 1600#L326-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 1731#L336 assume 0 != test_~tmp___2~0; 1730#L342-1 assume !(0 != ~pumpRunning~0); 1581#L70 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1582#L128 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1595#L102-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 1574#L987-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1575#L992-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 1663#L248-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 1633#L248-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1617#L254-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 1557#L106-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1558#L77 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 1682#L947-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 1666#L380 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 1586#L380-1 [2020-11-30 00:15:26,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:26,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2020-11-30 00:15:26,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:26,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749639452] [2020-11-30 00:15:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:26,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:26,298 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:26,312 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:26,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:26,313 INFO L82 PathProgramCache]: Analyzing trace with hash -469430134, now seen corresponding path program 1 times [2020-11-30 00:15:26,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:26,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609469002] [2020-11-30 00:15:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:26,325 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:26,333 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:26,339 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:26,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:26,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1303711492, now seen corresponding path program 1 times [2020-11-30 00:15:26,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:26,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571683497] [2020-11-30 00:15:26,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:26,392 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:26,448 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:26,471 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:26,643 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-11-30 00:17:14,858 WARN L193 SmtUtils]: Spent 1.80 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-30 00:18:29,387 WARN L193 SmtUtils]: Spent 1.24 m on a formula simplification that was a NOOP. DAG size: 435 [2020-11-30 00:18:29,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:18:29 BoogieIcfgContainer [2020-11-30 00:18:29,815 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:18:29,816 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:18:29,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:18:29,817 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:18:29,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:23" (3/4) ... [2020-11-30 00:18:29,822 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:18:29,925 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e92dab10-43b1-485b-b349-39a0696e7151/bin/uautomizer/witness.graphml [2020-11-30 00:18:29,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:18:29,931 INFO L168 Benchmark]: Toolchain (without parser) took 188745.07 ms. Allocated memory was 90.2 MB in the beginning and 155.2 MB in the end (delta: 65.0 MB). Free memory was 63.0 MB in the beginning and 57.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 69.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:29,931 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:18:29,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.87 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 62.9 MB in the beginning and 80.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:29,933 INFO L168 Benchmark]: Boogie Procedure Inliner took 132.67 ms. Allocated memory is still 115.3 MB. Free memory was 80.4 MB in the beginning and 76.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:29,933 INFO L168 Benchmark]: Boogie Preprocessor took 63.62 ms. Allocated memory is still 115.3 MB. Free memory was 76.6 MB in the beginning and 73.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:29,934 INFO L168 Benchmark]: RCFGBuilder took 1482.96 ms. Allocated memory is still 115.3 MB. Free memory was 73.8 MB in the beginning and 79.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:29,937 INFO L168 Benchmark]: BuchiAutomizer took 186277.70 ms. Allocated memory was 115.3 MB in the beginning and 155.2 MB in the end (delta: 39.8 MB). Free memory was 79.7 MB in the beginning and 59.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 87.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:29,939 INFO L168 Benchmark]: Witness Printer took 112.55 ms. Allocated memory is still 155.2 MB. Free memory was 59.7 MB in the beginning and 57.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:18:29,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 663.87 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 62.9 MB in the beginning and 80.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 132.67 ms. Allocated memory is still 115.3 MB. Free memory was 80.4 MB in the beginning and 76.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.62 ms. Allocated memory is still 115.3 MB. Free memory was 76.6 MB in the beginning and 73.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1482.96 ms. Allocated memory is still 115.3 MB. Free memory was 73.8 MB in the beginning and 79.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 186277.70 ms. Allocated memory was 115.3 MB in the beginning and 155.2 MB in the end (delta: 39.8 MB). Free memory was 79.7 MB in the beginning and 59.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 87.2 MB. Max. memory is 16.1 GB. * Witness Printer took 112.55 ms. Allocated memory is still 155.2 MB. Free memory was 59.7 MB in the beginning and 57.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 229 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 186.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 185.1s. Construction of modules took 0.4s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 318 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 229 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 609 SDtfs, 1209 SDslu, 1240 SDs, 0 SdLazy, 131 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 306]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=13966} State at position 1 is {NULL=0, NULL=0, NULL=13979, NULL=13966, NULL=0, NULL=13981, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a5f7bf4=0, NULL=0, NULL=13994, methaneLevelCritical=0, tmp=0, NULL=0, retValue_acc=0, NULL=13991, NULL=0, tmp___1=0, NULL=0, NULL=13971, cleanupTimeShifts=4, retValue_acc=0, NULL=13985, waterLevel=1, NULL=13984, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3425815=0, NULL=13992, \result=1, head=0, pumpRunning=0, NULL=13980, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42204efd=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60cd630f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64480bd1=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@727e734b=61, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2684239b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d75b05e=0, NULL=0, tmp=1, NULL=0, NULL=13972, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14bb4831=0, NULL=0, tmp___0=0, NULL=13975, methAndRunningLastTime=0, NULL=13970, NULL=13986, tmp=0, head=0, NULL=0, NULL=13977, retValue_acc=0, NULL=13974, tmp___0=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1208b5a4=0, NULL=0, tmp=0, NULL=0, systemActive=1, NULL=13968, NULL=0, NULL=13976, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=13993, NULL=13987, \result=0, NULL=13982, NULL=0, NULL=0, retValue_acc=1, NULL=13983, NULL=13990, NULL=13969, NULL=13989, tmp___0=0, retValue_acc=1, tmp___2=61, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=13988, NULL=13967, NULL=0, NULL=0, NULL=13978, NULL=0, NULL=13973, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L363] int methAndRunningLastTime ; [L402] int cleanupTimeShifts = 4; [L706] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L904] int waterLevel = 1; [L905] int methaneLevelCritical = 0; [L479] int retValue_acc ; [L480] int tmp ; [L528] int retValue_acc ; [L531] retValue_acc = 1 [L532] return (retValue_acc); [L486] tmp = valid_product() [L488] COND TRUE \read(tmp) [L368] methAndRunningLastTime = 0 [L297] int splverifierCounter ; [L298] int tmp ; [L299] int tmp___0 ; [L300] int tmp___1 ; [L301] int tmp___2 ; [L304] splverifierCounter = 0 Loop: [L306] COND TRUE 1 [L308] COND TRUE splverifierCounter < 4 [L314] tmp = __VERIFIER_nondet_int() [L316] COND FALSE !(\read(tmp)) [L324] tmp___0 = __VERIFIER_nondet_int() [L326] COND FALSE !(\read(tmp___0)) [L334] tmp___2 = __VERIFIER_nondet_int() [L336] COND TRUE \read(tmp___2) [L70] COND FALSE !(\read(pumpRunning)) [L77] COND TRUE \read(systemActive) [L125] int tmp ; [L128] COND FALSE !(\read(pumpRunning)) [L99] int tmp ; [L102] COND TRUE ! pumpRunning [L240] int retValue_acc ; [L241] int tmp ; [L242] int tmp___0 ; [L984] int retValue_acc ; [L987] COND TRUE waterLevel < 2 [L988] retValue_acc = 1 [L989] return (retValue_acc); [L246] tmp = isHighWaterSensorDry() [L248] COND TRUE \read(tmp) [L249] tmp___0 = 0 [L253] retValue_acc = tmp___0 [L254] return (retValue_acc); [L104] tmp = isHighWaterLevel() [L106] COND FALSE !(\read(tmp)) [L373] int tmp ; [L374] int tmp___0 ; [L943] int retValue_acc ; [L946] retValue_acc = methaneLevelCritical [L947] return (retValue_acc); [L378] tmp = isMethaneLevelCritical() [L380] COND FALSE !(\read(tmp)) [L396] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...