./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product62.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_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/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 e4021e5ed6083ccb49822fa9a7e2a9e751d393e1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:32:41,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:32:41,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:32:41,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:32:41,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:32:41,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:32:41,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:32:41,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:32:41,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:32:41,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:32:41,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:32:41,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:32:41,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:32:41,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:32:41,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:32:41,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:32:41,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:32:41,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:32:41,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:32:41,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:32:41,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:32:41,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:32:41,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:32:41,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:32:41,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:32:41,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:32:41,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:32:41,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:32:41,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:32:41,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:32:41,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:32:41,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:32:41,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:32:41,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:32:41,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:32:41,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:32:41,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:32:41,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:32:41,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:32:41,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:32:41,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:32:41,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 23:32:41,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:32:41,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:32:41,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:32:41,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:32:41,211 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:32:41,211 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:32:41,212 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:32:41,212 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:32:41,212 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:32:41,213 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:32:41,213 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:32:41,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:32:41,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:32:41,214 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:32:41,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:32:41,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:32:41,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:32:41,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:32:41,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:32:41,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:32:41,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:32:41,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:32:41,216 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:32:41,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:32:41,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:32:41,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:32:41,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:32:41,218 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:32:41,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:32:41,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:32:41,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:32:41,219 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:32:41,220 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:32:41,220 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_d2ef90c5-6762-4703-953d-04a85aad60c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4021e5ed6083ccb49822fa9a7e2a9e751d393e1 [2020-11-29 23:32:41,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:32:41,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:32:41,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:32:41,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:32:41,574 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:32:41,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c [2020-11-29 23:32:41,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer/data/3f9e45c39/62326cf7d10d4f7e99249887286eaa19/FLAG9ca21ccbc [2020-11-29 23:32:42,408 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:32:42,409 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c [2020-11-29 23:32:42,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer/data/3f9e45c39/62326cf7d10d4f7e99249887286eaa19/FLAG9ca21ccbc [2020-11-29 23:32:42,638 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer/data/3f9e45c39/62326cf7d10d4f7e99249887286eaa19 [2020-11-29 23:32:42,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:32:42,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:32:42,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:32:42,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:32:42,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:32:42,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:32:42" (1/1) ... [2020-11-29 23:32:42,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423eaf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:42, skipping insertion in model container [2020-11-29 23:32:42,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:32:42" (1/1) ... [2020-11-29 23:32:42,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:32:42,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:32:43,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:32:43,213 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:32:43,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:32:43,388 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:32:43,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:43 WrapperNode [2020-11-29 23:32:43,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:32:43,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:32:43,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:32:43,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:32:43,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:43" (1/1) ... [2020-11-29 23:32:43,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:43" (1/1) ... [2020-11-29 23:32:43,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:32:43,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:32:43,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:32:43,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:32:43,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:43" (1/1) ... [2020-11-29 23:32:43,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:43" (1/1) ... [2020-11-29 23:32:43,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:43" (1/1) ... [2020-11-29 23:32:43,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:43" (1/1) ... [2020-11-29 23:32:43,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:43" (1/1) ... [2020-11-29 23:32:43,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:43" (1/1) ... [2020-11-29 23:32:43,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:43" (1/1) ... [2020-11-29 23:32:43,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:32:43,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:32:43,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:32:43,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:32:43,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:32:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:32:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:32:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:32:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:32:45,350 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:32:45,352 INFO L298 CfgBuilder]: Removed 356 assume(true) statements. [2020-11-29 23:32:45,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:32:45 BoogieIcfgContainer [2020-11-29 23:32:45,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:32:45,358 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:32:45,358 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:32:45,362 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:32:45,363 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:32:45,363 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:32:42" (1/3) ... [2020-11-29 23:32:45,365 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5636e6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:32:45, skipping insertion in model container [2020-11-29 23:32:45,365 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:32:45,365 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:32:43" (2/3) ... [2020-11-29 23:32:45,365 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5636e6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:32:45, skipping insertion in model container [2020-11-29 23:32:45,366 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:32:45,366 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:32:45" (3/3) ... [2020-11-29 23:32:45,367 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2020-11-29 23:32:45,422 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:32:45,422 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:32:45,423 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:32:45,423 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:32:45,423 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:32:45,423 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:32:45,423 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:32:45,423 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:32:45,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 225 states. [2020-11-29 23:32:45,492 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2020-11-29 23:32:45,492 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:32:45,492 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:32:45,502 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:32:45,503 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:32:45,503 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:32:45,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 225 states. [2020-11-29 23:32:45,518 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2020-11-29 23:32:45,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:32:45,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:32:45,520 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:32:45,520 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:32:45,526 INFO L794 eck$LassoCheckResult]: Stem: 91#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(25);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~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~ret37, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 59#L433true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 162#L441true main_#t~ret37 := valid_product_#res;main_~tmp~8 := main_#t~ret37;havoc main_#t~ret37; 112#L528true assume 0 != main_~tmp~8; 34#L505true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 135#L390-1true [2020-11-29 23:32:45,527 INFO L796 eck$LassoCheckResult]: Loop: 135#L390-1true assume !false; 161#L67true assume test_~splverifierCounter~0 < 4; 226#L68true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 25#L76true assume !(0 != test_~tmp~0); 21#L76-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 62#L86true assume !(0 != test_~tmp___0~0); 60#L86-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 198#L96true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 106#L104-2true assume !(0 != ~pumpRunning~0); 202#L140true assume !(0 != ~systemActive~0); 50#L147true havoc __utac_acc__Specification4_spec__1_#t~ret34, __utac_acc__Specification4_spec__1_#t~ret35, __utac_acc__Specification4_spec__1_~tmp~7, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~7;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 165#L983true __utac_acc__Specification4_spec__1_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~7 := __utac_acc__Specification4_spec__1_#t~ret34;havoc __utac_acc__Specification4_spec__1_#t~ret34; 132#L390true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~7); 135#L390-1true [2020-11-29 23:32:45,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:32:45,535 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 23:32:45,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:32:45,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056208585] [2020-11-29 23:32:45,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:32:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:32:45,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:32:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:32:45,994 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:32:46,066 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:32:46,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:32:46,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1674172475, now seen corresponding path program 1 times [2020-11-29 23:32:46,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:32:46,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736661508] [2020-11-29 23:32:46,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:32:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:32:46,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:32:46,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736661508] [2020-11-29 23:32:46,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:32:46,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:32:46,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661475421] [2020-11-29 23:32:46,181 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:32:46,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:32:46,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:32:46,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:32:46,205 INFO L87 Difference]: Start difference. First operand 225 states. Second operand 3 states. [2020-11-29 23:32:46,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:32:46,313 INFO L93 Difference]: Finished difference Result 222 states and 323 transitions. [2020-11-29 23:32:46,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:32:46,316 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 222 states and 323 transitions. [2020-11-29 23:32:46,331 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 143 [2020-11-29 23:32:46,348 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 222 states to 215 states and 315 transitions. [2020-11-29 23:32:46,349 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 215 [2020-11-29 23:32:46,351 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 215 [2020-11-29 23:32:46,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 215 states and 315 transitions. [2020-11-29 23:32:46,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:32:46,354 INFO L691 BuchiCegarLoop]: Abstraction has 215 states and 315 transitions. [2020-11-29 23:32:46,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states and 315 transitions. [2020-11-29 23:32:46,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2020-11-29 23:32:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-11-29 23:32:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 315 transitions. [2020-11-29 23:32:46,433 INFO L714 BuchiCegarLoop]: Abstraction has 215 states and 315 transitions. [2020-11-29 23:32:46,434 INFO L594 BuchiCegarLoop]: Abstraction has 215 states and 315 transitions. [2020-11-29 23:32:46,434 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:32:46,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 215 states and 315 transitions. [2020-11-29 23:32:46,442 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 143 [2020-11-29 23:32:46,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:32:46,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:32:46,446 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:32:46,446 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:32:46,446 INFO L794 eck$LassoCheckResult]: Stem: 602#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(25);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 480#L-1 havoc main_#res;havoc main_#t~ret37, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 481#L433 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 551#L441 main_#t~ret37 := valid_product_#res;main_~tmp~8 := main_#t~ret37;havoc main_#t~ret37; 625#L528 assume 0 != main_~tmp~8; 509#L505 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 510#L390-1 [2020-11-29 23:32:46,447 INFO L796 eck$LassoCheckResult]: Loop: 510#L390-1 assume !false; 643#L67 assume test_~splverifierCounter~0 < 4; 647#L68 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 497#L76 assume !(0 != test_~tmp~0); 489#L76-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 490#L86 assume !(0 != test_~tmp___0~0); 552#L86-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 553#L96 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 619#L104-2 assume !(0 != ~pumpRunning~0); 580#L140 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 549#L224 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 550#L198-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 594#L172-3 assume !(0 == ~pumpRunning~0); 536#L147 havoc __utac_acc__Specification4_spec__1_#t~ret34, __utac_acc__Specification4_spec__1_#t~ret35, __utac_acc__Specification4_spec__1_~tmp~7, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~7;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 537#L983 __utac_acc__Specification4_spec__1_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~7 := __utac_acc__Specification4_spec__1_#t~ret34;havoc __utac_acc__Specification4_spec__1_#t~ret34; 641#L390 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~7); 510#L390-1 [2020-11-29 23:32:46,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:32:46,448 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 23:32:46,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:32:46,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085707492] [2020-11-29 23:32:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:32:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:32:46,654 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:32:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:32:46,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:32:46,839 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:32:46,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:32:46,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1243674301, now seen corresponding path program 1 times [2020-11-29 23:32:46,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:32:46,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577405433] [2020-11-29 23:32:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:32:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:32:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:32:46,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577405433] [2020-11-29 23:32:46,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:32:46,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:32:46,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331632094] [2020-11-29 23:32:46,887 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:32:46,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:32:46,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:32:46,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:32:46,888 INFO L87 Difference]: Start difference. First operand 215 states and 315 transitions. cyclomatic complexity: 102 Second operand 3 states. [2020-11-29 23:32:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:32:47,103 INFO L93 Difference]: Finished difference Result 211 states and 291 transitions. [2020-11-29 23:32:47,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:32:47,104 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 211 states and 291 transitions. [2020-11-29 23:32:47,108 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 144 [2020-11-29 23:32:47,111 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 211 states to 211 states and 291 transitions. [2020-11-29 23:32:47,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 211 [2020-11-29 23:32:47,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 211 [2020-11-29 23:32:47,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 211 states and 291 transitions. [2020-11-29 23:32:47,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:32:47,115 INFO L691 BuchiCegarLoop]: Abstraction has 211 states and 291 transitions. [2020-11-29 23:32:47,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states and 291 transitions. [2020-11-29 23:32:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-11-29 23:32:47,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-11-29 23:32:47,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 291 transitions. [2020-11-29 23:32:47,130 INFO L714 BuchiCegarLoop]: Abstraction has 211 states and 291 transitions. [2020-11-29 23:32:47,131 INFO L594 BuchiCegarLoop]: Abstraction has 211 states and 291 transitions. [2020-11-29 23:32:47,131 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:32:47,131 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 211 states and 291 transitions. [2020-11-29 23:32:47,133 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 144 [2020-11-29 23:32:47,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:32:47,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:32:47,135 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:32:47,135 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:32:47,136 INFO L794 eck$LassoCheckResult]: Stem: 1024#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(25);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 923#L-1 havoc main_#res;havoc main_#t~ret37, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 924#L433 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 981#L441 main_#t~ret37 := valid_product_#res;main_~tmp~8 := main_#t~ret37;havoc main_#t~ret37; 984#L528 assume 0 != main_~tmp~8; 948#L505 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 949#L390-1 [2020-11-29 23:32:47,136 INFO L796 eck$LassoCheckResult]: Loop: 949#L390-1 assume !false; 982#L67 assume test_~splverifierCounter~0 < 4; 983#L68 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 937#L76 assume !(0 != test_~tmp~0); 927#L76-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 928#L86 assume !(0 != test_~tmp___0~0); 986#L86-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 987#L96 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1040#L104-2 assume !(0 != ~pumpRunning~0); 1041#L140 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 979#L224 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 980#L198-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 921#L172-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 922#L991-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1013#L996-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 1044#L343-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 1058#L343-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1054#L349-3 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 1034#L176-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 918#L147 havoc __utac_acc__Specification4_spec__1_#t~ret34, __utac_acc__Specification4_spec__1_#t~ret35, __utac_acc__Specification4_spec__1_~tmp~7, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~7;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 965#L983 __utac_acc__Specification4_spec__1_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~7 := __utac_acc__Specification4_spec__1_#t~ret34;havoc __utac_acc__Specification4_spec__1_#t~ret34; 996#L390 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~7); 949#L390-1 [2020-11-29 23:32:47,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:32:47,137 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 23:32:47,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:32:47,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507619945] [2020-11-29 23:32:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:32:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:32:47,210 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:32:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:32:47,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:32:47,278 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:32:47,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:32:47,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1113090801, now seen corresponding path program 1 times [2020-11-29 23:32:47,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:32:47,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341396977] [2020-11-29 23:32:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:32:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:32:47,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:32:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:32:47,322 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:32:47,328 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:32:47,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:32:47,329 INFO L82 PathProgramCache]: Analyzing trace with hash 140214325, now seen corresponding path program 1 times [2020-11-29 23:32:47,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:32:47,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561688190] [2020-11-29 23:32:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:32:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:32:47,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:32:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:32:47,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:32:47,459 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:32:47,613 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-11-29 23:34:20,613 WARN L193 SmtUtils]: Spent 1.55 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 23:35:26,723 WARN L193 SmtUtils]: Spent 1.10 m on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 23:35:26,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:35:26 BoogieIcfgContainer [2020-11-29 23:35:26,945 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:35:26,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:35:26,946 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:35:26,946 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:35:26,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:32:45" (3/4) ... [2020-11-29 23:35:26,948 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 23:35:27,015 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d2ef90c5-6762-4703-953d-04a85aad60c9/bin/uautomizer/witness.graphml [2020-11-29 23:35:27,015 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:35:27,017 INFO L168 Benchmark]: Toolchain (without parser) took 164365.82 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 53.6 MB in the beginning and 30.9 MB in the end (delta: 22.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:35:27,018 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 88.1 MB. Free memory was 61.5 MB in the beginning and 61.5 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:35:27,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.49 ms. Allocated memory is still 88.1 MB. Free memory was 53.4 MB in the beginning and 53.6 MB in the end (delta: -246.3 kB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:35:27,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 162.46 ms. Allocated memory is still 88.1 MB. Free memory was 53.6 MB in the beginning and 48.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:35:27,020 INFO L168 Benchmark]: Boogie Preprocessor took 133.64 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 48.0 MB in the beginning and 89.3 MB in the end (delta: -41.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:35:27,021 INFO L168 Benchmark]: RCFGBuilder took 1665.99 ms. Allocated memory is still 113.2 MB. Free memory was 89.3 MB in the beginning and 75.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:35:27,022 INFO L168 Benchmark]: BuchiAutomizer took 161587.51 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 75.2 MB in the beginning and 33.9 MB in the end (delta: 41.3 MB). Peak memory consumption was 77.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:35:27,023 INFO L168 Benchmark]: Witness Printer took 69.97 ms. Allocated memory is still 136.3 MB. Free memory was 33.9 MB in the beginning and 30.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:35:27,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 88.1 MB. Free memory was 61.5 MB in the beginning and 61.5 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 734.49 ms. Allocated memory is still 88.1 MB. Free memory was 53.4 MB in the beginning and 53.6 MB in the end (delta: -246.3 kB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 162.46 ms. Allocated memory is still 88.1 MB. Free memory was 53.6 MB in the beginning and 48.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 133.64 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 48.0 MB in the beginning and 89.3 MB in the end (delta: -41.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1665.99 ms. Allocated memory is still 113.2 MB. Free memory was 89.3 MB in the beginning and 75.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 161587.51 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 75.2 MB in the beginning and 33.9 MB in the end (delta: 41.3 MB). Peak memory consumption was 77.4 MB. Max. memory is 16.1 GB. * Witness Printer took 69.97 ms. Allocated memory is still 136.3 MB. Free memory was 33.9 MB in the beginning and 30.9 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 3 locations. The remainder module has 211 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 161.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 160.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 215 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 542 SDtfs, 489 SDslu, 75 SDs, 0 SdLazy, 45 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 66]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=12576} State at position 1 is {retValue_acc=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45374e81=68, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1dc65ac7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53a02c1c=0, NULL=12576, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e246ef4=0, NULL=0, methaneLevelCritical=0, NULL=12603, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@447eb467=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79a0d5ce=0, NULL=0, retValue_acc=0, NULL=12592, NULL=0, tmp___1=0, NULL=12582, NULL=12586, NULL=0, cleanupTimeShifts=4, tmp=0, NULL=12577, NULL=0, NULL=0, waterLevel=1, NULL=12589, tmp___0=0, NULL=12597, \result=1, head=0, pumpRunning=0, NULL=12595, NULL=12601, NULL=0, tmp=1, \result=1, NULL=0, NULL=12593, NULL=0, NULL=0, tmp=1, tmp=1, NULL=12600, NULL=12590, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b01b61b=0, tmp=0, head=0, NULL=12584, NULL=0, tmp=0, retValue_acc=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43a1ad45=0, NULL=12583, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@385ec435=0, NULL=0, tmp___0=0, NULL=0, NULL=0, NULL=12602, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30282ac7=0, tmp=0, NULL=12588, NULL=12581, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=12598, \result=1, NULL=12604, \result=0, NULL=0, NULL=0, NULL=0, NULL=12579, \result=0, NULL=12585, NULL=0, NULL=12596, NULL=0, retValue_acc=1, NULL=12591, NULL=12587, retValue_acc=1, tmp___2=68, splverifierCounter=0, NULL=0, NULL=0, NULL=12578, NULL=12599, NULL=12580, NULL=12594, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f2f778d=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L132] int pumpRunning = 0; [L133] int systemActive = 1; [L446] int cleanupTimeShifts = 4; [L711] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L908] int waterLevel = 1; [L909] int methaneLevelCritical = 0; [L519] int retValue_acc ; [L520] int tmp ; [L437] int retValue_acc ; [L440] retValue_acc = 1 [L441] return (retValue_acc); [L526] tmp = valid_product() [L528] COND TRUE \read(tmp) [L57] int splverifierCounter ; [L58] int tmp ; [L59] int tmp___0 ; [L60] int tmp___1 ; [L61] int tmp___2 ; [L64] splverifierCounter = 0 Loop: [L66] COND TRUE 1 [L68] COND TRUE splverifierCounter < 4 [L74] tmp = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp)) [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L376] systemActive = 1 [L140] COND FALSE !(\read(pumpRunning)) [L147] COND TRUE \read(systemActive) [L221] int tmp ; [L224] COND FALSE !(\read(pumpRunning)) [L195] int tmp ; [L198] COND FALSE !(\read(pumpRunning)) [L169] int tmp ; [L172] COND TRUE ! pumpRunning [L335] int retValue_acc ; [L336] int tmp ; [L337] int tmp___0 ; [L988] int retValue_acc ; [L991] COND TRUE waterLevel < 2 [L992] retValue_acc = 1 [L993] return (retValue_acc); [L341] tmp = isHighWaterSensorDry() [L343] COND TRUE \read(tmp) [L344] tmp___0 = 0 [L348] retValue_acc = tmp___0 [L349] return (retValue_acc); [L174] tmp = isHighWaterLevel() [L176] COND FALSE !(\read(tmp)) [L383] int tmp ; [L384] int tmp___0 ; [L979] int retValue_acc ; [L982] retValue_acc = waterLevel [L983] return (retValue_acc); [L388] tmp = getWaterLevel() [L390] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...