./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product53.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_ba9949db-5948-49fc-8c73-58eeb4d25856/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/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 11c7d5bbf13f298913183f1602cb6deb34fce4ea ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 00:18:05,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:18:05,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:18:05,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:18:05,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:18:05,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:18:05,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:18:05,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:18:05,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:18:05,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:18:05,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:18:05,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:18:05,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:18:05,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:18:05,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:18:05,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:18:05,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:18:05,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:18:05,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:18:05,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:18:05,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:18:05,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:18:05,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:18:05,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:18:05,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:18:05,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:18:05,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:18:05,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:18:05,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:18:05,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:18:05,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:18:05,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:18:05,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:18:05,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:18:05,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:18:05,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:18:05,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:18:05,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:18:05,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:18:05,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:18:05,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:18:05,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:18:05,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:18:05,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:18:05,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:18:05,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:18:05,742 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:18:05,742 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:18:05,742 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:18:05,743 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:18:05,743 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:18:05,743 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:18:05,745 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:18:05,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:18:05,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:18:05,746 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:18:05,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:18:05,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:18:05,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:18:05,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:18:05,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:18:05,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:18:05,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:18:05,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:18:05,748 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:18:05,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:18:05,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:18:05,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:18:05,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:18:05,750 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:18:05,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:18:05,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:18:05,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:18:05,753 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:18:05,754 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:18:05,755 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_ba9949db-5948-49fc-8c73-58eeb4d25856/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11c7d5bbf13f298913183f1602cb6deb34fce4ea [2020-11-30 00:18:06,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:18:06,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:18:06,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:18:06,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:18:06,170 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:18:06,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c [2020-11-30 00:18:06,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/bin/uautomizer/data/d3156a976/9e377a5a29244291a4fb40348ba845c3/FLAG878f4cf86 [2020-11-30 00:18:06,896 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:18:06,897 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c [2020-11-30 00:18:06,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/bin/uautomizer/data/d3156a976/9e377a5a29244291a4fb40348ba845c3/FLAG878f4cf86 [2020-11-30 00:18:07,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/bin/uautomizer/data/d3156a976/9e377a5a29244291a4fb40348ba845c3 [2020-11-30 00:18:07,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:18:07,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:18:07,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:18:07,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:18:07,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:18:07,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e876372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07, skipping insertion in model container [2020-11-30 00:18:07,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:18:07,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:18:07,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:18:07,629 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:18:07,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:18:07,801 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:18:07,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07 WrapperNode [2020-11-30 00:18:07,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:18:07,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:18:07,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:18:07,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:18:07,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:18:07,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:18:07,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:18:07,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:18:07,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:07,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:08,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:08,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:08,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:08,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... [2020-11-30 00:18:08,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:18:08,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:18:08,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:18:08,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:18:08,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/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 00:18:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:18:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:18:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:18:08,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:18:09,836 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:18:09,838 INFO L298 CfgBuilder]: Removed 288 assume(true) statements. [2020-11-30 00:18:09,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:09 BoogieIcfgContainer [2020-11-30 00:18:09,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:18:09,844 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:18:09,845 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:18:09,849 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:18:09,850 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:18:09,850 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:18:07" (1/3) ... [2020-11-30 00:18:09,852 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e4512d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:18:09, skipping insertion in model container [2020-11-30 00:18:09,852 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:18:09,853 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:07" (2/3) ... [2020-11-30 00:18:09,854 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e4512d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:18:09, skipping insertion in model container [2020-11-30 00:18:09,854 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:18:09,854 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:09" (3/3) ... [2020-11-30 00:18:09,858 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2020-11-30 00:18:09,919 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:18:09,919 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:18:09,920 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:18:09,920 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:18:09,920 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:18:09,920 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:18:09,920 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:18:09,921 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:18:09,944 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 195 states. [2020-11-30 00:18:09,984 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2020-11-30 00:18:09,989 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:18:09,989 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:18:10,001 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:18:10,001 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:10,001 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:18:10,001 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 195 states. [2020-11-30 00:18:10,034 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2020-11-30 00:18:10,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:18:10,035 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:18:10,036 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:18:10,036 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:10,043 INFO L794 eck$LassoCheckResult]: Stem: 103#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~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);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(21);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(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 7#L-1true havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 10#L76true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 118#L84true main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 163#L977true assume 0 != main_~tmp~10; 120#L954true havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, 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; 48#L510-1true [2020-11-30 00:18:10,044 INFO L796 eck$LassoCheckResult]: Loop: 48#L510-1true assume !false; 104#L104true assume test_~splverifierCounter~0 < 4; 145#L105true test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 156#L113true assume !(0 != test_~tmp~0); 154#L113-1true test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 173#L123true assume !(0 != test_~tmp___0~0); 170#L123-1true test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 133#L133true assume 0 != test_~tmp___2~0; 117#L139-2true assume !(0 != ~pumpRunning~0); 3#L175true assume !(0 != ~systemActive~0); 85#L182true havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 86#L435-1true __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 155#L504true assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 48#L510-1true [2020-11-30 00:18:10,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:10,050 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-30 00:18:10,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:10,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735679745] [2020-11-30 00:18:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:10,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:10,661 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:10,719 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:18:10,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:10,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1676481291, now seen corresponding path program 1 times [2020-11-30 00:18:10,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:10,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823238335] [2020-11-30 00:18:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:10,750 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:10,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:10,775 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:18:10,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:10,782 INFO L82 PathProgramCache]: Analyzing trace with hash 37797647, now seen corresponding path program 1 times [2020-11-30 00:18:10,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:10,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843154314] [2020-11-30 00:18:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:11,034 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 00:18:11,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843154314] [2020-11-30 00:18:11,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:11,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:18:11,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216059950] [2020-11-30 00:18:11,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:11,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:18:11,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:18:11,187 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 6 states. [2020-11-30 00:18:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:11,486 INFO L93 Difference]: Finished difference Result 192 states and 283 transitions. [2020-11-30 00:18:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:18:11,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 192 states and 283 transitions. [2020-11-30 00:18:11,497 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2020-11-30 00:18:11,505 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 192 states to 185 states and 276 transitions. [2020-11-30 00:18:11,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 185 [2020-11-30 00:18:11,509 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 185 [2020-11-30 00:18:11,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 276 transitions. [2020-11-30 00:18:11,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:18:11,512 INFO L691 BuchiCegarLoop]: Abstraction has 185 states and 276 transitions. [2020-11-30 00:18:11,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 276 transitions. [2020-11-30 00:18:11,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2020-11-30 00:18:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-11-30 00:18:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2020-11-30 00:18:11,556 INFO L714 BuchiCegarLoop]: Abstraction has 185 states and 276 transitions. [2020-11-30 00:18:11,556 INFO L594 BuchiCegarLoop]: Abstraction has 185 states and 276 transitions. [2020-11-30 00:18:11,556 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:18:11,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 276 transitions. [2020-11-30 00:18:11,561 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2020-11-30 00:18:11,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:18:11,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:18:11,562 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:18:11,562 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:11,563 INFO L794 eck$LassoCheckResult]: Stem: 589#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~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);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(21);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(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 436#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 437#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 434#L84 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 435#L977 assume 0 != main_~tmp~10; 450#L954 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, 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; 451#L510-1 [2020-11-30 00:18:11,563 INFO L796 eck$LassoCheckResult]: Loop: 451#L510-1 assume !false; 520#L104 assume test_~splverifierCounter~0 < 4; 542#L105 test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 543#L113 assume !(0 != test_~tmp~0); 562#L113-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 563#L123 assume !(0 != test_~tmp___0~0); 524#L123-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 487#L133 assume 0 != test_~tmp___2~0; 433#L139-2 assume !(0 != ~pumpRunning~0); 405#L175 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret14, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 406#L259 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret13, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 586#L233-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 555#L207-3 assume !(0 == ~pumpRunning~0); 426#L182 havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 575#L435-1 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 564#L504 assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 451#L510-1 [2020-11-30 00:18:11,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:11,564 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-30 00:18:11,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:11,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752945386] [2020-11-30 00:18:11,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:11,638 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:11,737 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:11,770 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:18:11,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:11,776 INFO L82 PathProgramCache]: Analyzing trace with hash -270276503, now seen corresponding path program 1 times [2020-11-30 00:18:11,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:11,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122500598] [2020-11-30 00:18:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:11,804 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 00:18:11,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122500598] [2020-11-30 00:18:11,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:11,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:18:11,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995836443] [2020-11-30 00:18:11,806 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:18:11,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:11,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:18:11,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:18:11,807 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. cyclomatic complexity: 93 Second operand 3 states. [2020-11-30 00:18:12,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:12,034 INFO L93 Difference]: Finished difference Result 196 states and 273 transitions. [2020-11-30 00:18:12,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:18:12,035 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196 states and 273 transitions. [2020-11-30 00:18:12,038 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 134 [2020-11-30 00:18:12,042 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196 states to 196 states and 273 transitions. [2020-11-30 00:18:12,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 196 [2020-11-30 00:18:12,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 196 [2020-11-30 00:18:12,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 196 states and 273 transitions. [2020-11-30 00:18:12,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:18:12,045 INFO L691 BuchiCegarLoop]: Abstraction has 196 states and 273 transitions. [2020-11-30 00:18:12,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states and 273 transitions. [2020-11-30 00:18:12,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-11-30 00:18:12,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-11-30 00:18:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 273 transitions. [2020-11-30 00:18:12,064 INFO L714 BuchiCegarLoop]: Abstraction has 196 states and 273 transitions. [2020-11-30 00:18:12,064 INFO L594 BuchiCegarLoop]: Abstraction has 196 states and 273 transitions. [2020-11-30 00:18:12,064 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:18:12,064 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 196 states and 273 transitions. [2020-11-30 00:18:12,067 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 134 [2020-11-30 00:18:12,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:18:12,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:18:12,068 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:18:12,069 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] [2020-11-30 00:18:12,069 INFO L794 eck$LassoCheckResult]: Stem: 944#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~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);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(21);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(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 819#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 820#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 817#L84 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 818#L977 assume 0 != main_~tmp~10; 830#L954 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, 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; 831#L510-1 [2020-11-30 00:18:12,070 INFO L796 eck$LassoCheckResult]: Loop: 831#L510-1 assume !false; 887#L104 assume test_~splverifierCounter~0 < 4; 906#L105 test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 907#L113 assume !(0 != test_~tmp~0); 920#L113-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 921#L123 assume !(0 != test_~tmp___0~0); 892#L123-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 858#L133 assume 0 != test_~tmp___2~0; 816#L139-2 assume !(0 != ~pumpRunning~0); 792#L175 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret14, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 793#L259 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret13, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 941#L233-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 916#L207-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 801#L475-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 802#L480-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 849#L361-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 883#L361-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 869#L367-3 processEnvironment__wrappee__highWaterSensor_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret12;havoc processEnvironment__wrappee__highWaterSensor_#t~ret12; 870#L211-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 811#L182 havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 932#L435-1 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 922#L504 assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 831#L510-1 [2020-11-30 00:18:12,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:12,070 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-30 00:18:12,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:12,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890862256] [2020-11-30 00:18:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:12,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:12,209 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:12,225 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:18:12,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:12,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1151634357, now seen corresponding path program 1 times [2020-11-30 00:18:12,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:12,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034022999] [2020-11-30 00:18:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:12,236 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:12,242 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:12,246 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:18:12,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:12,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1890027813, now seen corresponding path program 1 times [2020-11-30 00:18:12,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:12,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593120479] [2020-11-30 00:18:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:12,340 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 00:18:12,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593120479] [2020-11-30 00:18:12,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:12,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:18:12,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903751174] [2020-11-30 00:18:12,538 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-11-30 00:18:12,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:12,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:18:12,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:18:12,629 INFO L87 Difference]: Start difference. First operand 196 states and 273 transitions. cyclomatic complexity: 79 Second operand 5 states. [2020-11-30 00:18:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:12,859 INFO L93 Difference]: Finished difference Result 656 states and 915 transitions. [2020-11-30 00:18:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:18:12,860 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 656 states and 915 transitions. [2020-11-30 00:18:12,872 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 472 [2020-11-30 00:18:12,882 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 656 states to 656 states and 915 transitions. [2020-11-30 00:18:12,883 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 656 [2020-11-30 00:18:12,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 656 [2020-11-30 00:18:12,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 656 states and 915 transitions. [2020-11-30 00:18:12,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:18:12,893 INFO L691 BuchiCegarLoop]: Abstraction has 656 states and 915 transitions. [2020-11-30 00:18:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states and 915 transitions. [2020-11-30 00:18:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 386. [2020-11-30 00:18:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-11-30 00:18:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 532 transitions. [2020-11-30 00:18:12,951 INFO L714 BuchiCegarLoop]: Abstraction has 386 states and 532 transitions. [2020-11-30 00:18:12,951 INFO L594 BuchiCegarLoop]: Abstraction has 386 states and 532 transitions. [2020-11-30 00:18:12,952 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:18:12,952 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 386 states and 532 transitions. [2020-11-30 00:18:12,957 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 268 [2020-11-30 00:18:12,958 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:18:12,958 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:18:12,959 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:18:12,959 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, 1, 1] [2020-11-30 00:18:12,960 INFO L794 eck$LassoCheckResult]: Stem: 1832#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~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);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(21);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(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1689#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 1690#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1687#L84 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 1688#L977 assume 0 != main_~tmp~10; 1703#L954 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, 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; 1704#L510-1 [2020-11-30 00:18:12,960 INFO L796 eck$LassoCheckResult]: Loop: 1704#L510-1 assume !false; 1833#L104 assume test_~splverifierCounter~0 < 4; 1834#L105 test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 1806#L113 assume !(0 != test_~tmp~0); 1802#L113-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 1803#L123 assume !(0 != test_~tmp___0~0); 1835#L123-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 1836#L133 assume 0 != test_~tmp___2~0; 2031#L139-2 assume !(0 != ~pumpRunning~0); 2028#L175 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret14, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 2026#L259 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret13, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 1842#L233-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1795#L207-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1671#L475-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1672#L480-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 1720#L361-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1756#L361-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 1740#L367-3 processEnvironment__wrappee__highWaterSensor_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret12;havoc processEnvironment__wrappee__highWaterSensor_#t~ret12; 1741#L211-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1681#L182 havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1993#L435-1 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 1994#L504 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~6);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 1998#L467 __utac_acc__Specification3_spec__1_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~3 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 1999#L510 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3); 1704#L510-1 [2020-11-30 00:18:12,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:12,961 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-30 00:18:12,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:12,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494525587] [2020-11-30 00:18:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:13,027 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:13,061 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:13,073 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:18:13,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:13,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1380933975, now seen corresponding path program 1 times [2020-11-30 00:18:13,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:13,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283752456] [2020-11-30 00:18:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:13,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:13,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:13,092 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:18:13,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:13,093 INFO L82 PathProgramCache]: Analyzing trace with hash 454449231, now seen corresponding path program 1 times [2020-11-30 00:18:13,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:13,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500512423] [2020-11-30 00:18:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:13,173 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:13,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:13,232 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:18:13,428 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-11-30 00:18:13,538 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-30 00:19:46,995 WARN L193 SmtUtils]: Spent 1.56 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-30 00:20:46,345 WARN L193 SmtUtils]: Spent 59.34 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-30 00:20:46,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:20:46 BoogieIcfgContainer [2020-11-30 00:20:46,667 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:20:46,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:20:46,668 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:20:46,668 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:20:46,669 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:09" (3/4) ... [2020-11-30 00:20:46,673 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:20:46,752 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ba9949db-5948-49fc-8c73-58eeb4d25856/bin/uautomizer/witness.graphml [2020-11-30 00:20:46,752 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:20:46,754 INFO L168 Benchmark]: Toolchain (without parser) took 159558.34 ms. Allocated memory was 94.4 MB in the beginning and 159.4 MB in the end (delta: 65.0 MB). Free memory was 63.5 MB in the beginning and 79.7 MB in the end (delta: -16.2 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:46,754 INFO L168 Benchmark]: CDTParser took 1.07 ms. Allocated memory is still 94.4 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:20:46,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.64 ms. Allocated memory is still 94.4 MB. Free memory was 63.3 MB in the beginning and 60.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:46,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 141.05 ms. Allocated memory is still 94.4 MB. Free memory was 60.9 MB in the beginning and 56.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:46,756 INFO L168 Benchmark]: Boogie Preprocessor took 99.58 ms. Allocated memory is still 94.4 MB. Free memory was 56.3 MB in the beginning and 52.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:46,757 INFO L168 Benchmark]: RCFGBuilder took 1798.39 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 52.5 MB in the beginning and 85.0 MB in the end (delta: -32.6 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:46,757 INFO L168 Benchmark]: BuchiAutomizer took 156822.48 ms. Allocated memory was 121.6 MB in the beginning and 159.4 MB in the end (delta: 37.7 MB). Free memory was 85.0 MB in the beginning and 82.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 87.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:46,758 INFO L168 Benchmark]: Witness Printer took 84.81 ms. Allocated memory is still 159.4 MB. Free memory was 82.8 MB in the beginning and 79.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:46,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07 ms. Allocated memory is still 94.4 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 604.64 ms. Allocated memory is still 94.4 MB. Free memory was 63.3 MB in the beginning and 60.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 141.05 ms. Allocated memory is still 94.4 MB. Free memory was 60.9 MB in the beginning and 56.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 99.58 ms. Allocated memory is still 94.4 MB. Free memory was 56.3 MB in the beginning and 52.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1798.39 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 52.5 MB in the beginning and 85.0 MB in the end (delta: -32.6 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 156822.48 ms. Allocated memory was 121.6 MB in the beginning and 159.4 MB in the end (delta: 37.7 MB). Free memory was 85.0 MB in the beginning and 82.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 87.6 MB. Max. memory is 16.1 GB. * Witness Printer took 84.81 ms. Allocated memory is still 159.4 MB. Free memory was 82.8 MB in the beginning and 79.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 386 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 156.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 155.5s. Construction of modules took 0.4s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 270 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 386 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 815 SDtfs, 2132 SDslu, 1080 SDs, 0 SdLazy, 121 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 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: 103]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3fb4909=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@702e6308=0, NULL=1, NULL=0, NULL=23738, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76a31a43=0, retValue_acc=0, NULL=0, NULL=23741, NULL=0, tmp___1=0, NULL=23734, NULL=23735, NULL=0, NULL=23726, cleanupTimeShifts=4, tmp=0, tmp=1, NULL=23719, tmp=0, NULL=0, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73f7f421=0, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=23744, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=23743, NULL=0, NULL=0, retValue_acc=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e62cf87=0, NULL=23737, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ea5f597=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55b2109e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@202396f9=0, tmp=0, head=0, NULL=23736, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16ba84a9=0, NULL=0, NULL=23732, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59fbfad4=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2278213f=78, tmp=0, NULL=23725, tmp___0=0, NULL=0, NULL=0, NULL=23724, NULL=23731, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b5da576=0, NULL=0, tmp=0, NULL=23730, NULL=23727, tmp___0=1, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=23728, \result=1, retValue_acc=0, \result=0, NULL=23718, retValue_acc=0, \result=0, NULL=23729, NULL=0, NULL=23739, NULL=23722, NULL=0, NULL=23740, NULL=23723, NULL=23721, retValue_acc=1, tmp___2=78, splverifierCounter=0, NULL=0, \result=0, NULL=23720, NULL=23742, tmp___1=0, NULL=23717, NULL=23733} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L167] int pumpRunning = 0; [L168] int systemActive = 1; [L392] int waterLevel = 1; [L393] int methaneLevelCritical = 0; [L698] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L895] int cleanupTimeShifts = 4; [L968] int retValue_acc ; [L969] int tmp ; [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L975] tmp = valid_product() [L977] COND TRUE \read(tmp) [L94] int splverifierCounter ; [L95] int tmp ; [L96] int tmp___0 ; [L97] int tmp___1 ; [L98] int tmp___2 ; [L101] splverifierCounter = 0 Loop: [L103] COND TRUE 1 [L105] COND TRUE splverifierCounter < 4 [L111] tmp = __VERIFIER_nondet_int() [L113] COND FALSE !(\read(tmp)) [L121] tmp___0 = __VERIFIER_nondet_int() [L123] COND FALSE !(\read(tmp___0)) [L131] tmp___2 = __VERIFIER_nondet_int() [L133] COND TRUE \read(tmp___2) [L175] COND FALSE !(\read(pumpRunning)) [L182] COND TRUE \read(systemActive) [L256] int tmp ; [L259] COND FALSE !(\read(pumpRunning)) [L230] int tmp ; [L233] COND FALSE !(\read(pumpRunning)) [L204] int tmp ; [L207] COND TRUE ! pumpRunning [L353] int retValue_acc ; [L354] int tmp ; [L355] int tmp___0 ; [L472] int retValue_acc ; [L475] COND TRUE waterLevel < 2 [L476] retValue_acc = 1 [L477] return (retValue_acc); [L359] tmp = isHighWaterSensorDry() [L361] COND TRUE \read(tmp) [L362] tmp___0 = 0 [L366] retValue_acc = tmp___0 [L367] return (retValue_acc); [L209] tmp = isHighWaterLevel() [L211] COND FALSE !(\read(tmp)) [L496] int tmp ; [L497] int tmp___0 ; [L498] int tmp___1 ; [L431] int retValue_acc ; [L434] retValue_acc = methaneLevelCritical [L435] return (retValue_acc); [L502] tmp = isMethaneLevelCritical() [L504] COND FALSE !(\read(tmp)) [L463] int retValue_acc ; [L466] retValue_acc = waterLevel [L467] return (retValue_acc); [L508] tmp___0 = getWaterLevel() [L510] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...