./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product20.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_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product20.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/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 5ebccae0581b398040ff9316586f03c48604ddc0 ........................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:56:07,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:56:07,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:56:07,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:56:07,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:56:07,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:56:07,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:56:07,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:56:07,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:56:07,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:56:07,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:56:07,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:56:07,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:56:07,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:56:07,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:56:07,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:56:07,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:56:07,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:56:07,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:56:07,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:56:07,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:56:07,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:56:07,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:56:07,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:56:07,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:56:07,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:56:07,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:56:07,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:56:07,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:56:07,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:56:07,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:56:07,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:56:07,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:56:07,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:56:07,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:56:07,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:56:07,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:56:07,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:56:07,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:56:07,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:56:07,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:56:07,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 23:56:07,624 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:56:07,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:56:07,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:56:07,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:56:07,629 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:56:07,629 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:56:07,629 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:56:07,630 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:56:07,630 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:56:07,630 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:56:07,635 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:56:07,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:56:07,636 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:56:07,636 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:56:07,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:56:07,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:56:07,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:56:07,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:56:07,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:56:07,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:56:07,637 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:56:07,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:56:07,637 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:56:07,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:56:07,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:56:07,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:56:07,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:56:07,638 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:56:07,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:56:07,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:56:07,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:56:07,639 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:56:07,641 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:56:07,642 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_81d173b0-b678-4e6a-88d5-9057310bec32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ebccae0581b398040ff9316586f03c48604ddc0 [2020-11-29 23:56:07,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:56:07,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:56:07,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:56:07,988 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:56:07,989 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:56:07,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product20.cil.c [2020-11-29 23:56:08,056 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer/data/457b30a48/bebd98405089426dba8924aa3145fd4c/FLAG96675cff7 [2020-11-29 23:56:08,601 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:56:08,602 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/sv-benchmarks/c/product-lines/minepump_spec3_product20.cil.c [2020-11-29 23:56:08,625 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer/data/457b30a48/bebd98405089426dba8924aa3145fd4c/FLAG96675cff7 [2020-11-29 23:56:08,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer/data/457b30a48/bebd98405089426dba8924aa3145fd4c [2020-11-29 23:56:08,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:56:08,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:56:08,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:56:08,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:56:08,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:56:08,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:56:08" (1/1) ... [2020-11-29 23:56:08,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d7b83d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:08, skipping insertion in model container [2020-11-29 23:56:08,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:56:08" (1/1) ... [2020-11-29 23:56:08,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:56:08,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:56:09,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:56:09,447 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:56:09,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:56:09,581 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:56:09,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09 WrapperNode [2020-11-29 23:56:09,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:56:09,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:56:09,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:56:09,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:56:09,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:56:09,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:56:09,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:56:09,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:56:09,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:56:09,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:56:09,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:56:09,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:56:09,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:56:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:56:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:56:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:56:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:56:10,801 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:56:10,807 INFO L298 CfgBuilder]: Removed 114 assume(true) statements. [2020-11-29 23:56:10,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:10 BoogieIcfgContainer [2020-11-29 23:56:10,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:56:10,811 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:56:10,811 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:56:10,814 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:56:10,815 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:56:10,815 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:56:08" (1/3) ... [2020-11-29 23:56:10,817 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a7aea00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:56:10, skipping insertion in model container [2020-11-29 23:56:10,817 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:56:10,817 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (2/3) ... [2020-11-29 23:56:10,817 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a7aea00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:56:10, skipping insertion in model container [2020-11-29 23:56:10,818 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:56:10,818 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:10" (3/3) ... [2020-11-29 23:56:10,822 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2020-11-29 23:56:10,890 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:56:10,890 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:56:10,890 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:56:10,890 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:56:10,891 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:56:10,891 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:56:10,891 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:56:10,891 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:56:10,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states. [2020-11-29 23:56:10,926 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2020-11-29 23:56:10,926 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:56:10,926 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:56:10,935 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:56:10,935 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:10,935 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:56:10,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states. [2020-11-29 23:56:10,941 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2020-11-29 23:56:10,941 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:56:10,942 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:56:10,942 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:56:10,943 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:10,948 INFO L794 eck$LassoCheckResult]: Stem: 40#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(13);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(110, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 3 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string56.base, #t~string56.offset, 1);call write~init~int(80, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(117, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(109, #t~string56.base, 3 + #t~string56.offset, 1);call write~init~int(112, #t~string56.base, 4 + #t~string56.offset, 1);call write~init~int(58, #t~string56.base, 5 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 6 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string62.base, #t~string62.offset, 1);call write~init~int(32, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string64.base, #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 1 + #t~string64.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 14#L-1true havoc main_#res;havoc main_#t~ret43, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 61#L67true 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; 78#L75true main_#t~ret43 := valid_product_#res;main_~tmp~3 := main_#t~ret43;havoc main_#t~ret43; 10#L533true assume 0 != main_~tmp~3; 43#L509true havoc test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_#t~nondet69, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 11#L566-1true [2020-11-29 23:56:10,949 INFO L796 eck$LassoCheckResult]: Loop: 11#L566-1true assume !false; 13#L778true assume test_~splverifierCounter~0 < 4; 34#L779true test_~tmp~7 := test_#t~nondet66;havoc test_#t~nondet66; 41#L787true assume !(0 != test_~tmp~7); 44#L787-1true test_~tmp___0~2 := test_#t~nondet67;havoc test_#t~nondet67; 15#L797true assume !(0 != test_~tmp___0~2); 18#L797-1true test_~tmp___2~0 := test_#t~nondet68;havoc test_#t~nondet68; 81#L807true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 3#L815-1true assume !(0 != ~pumpRunning~0); 6#L599true assume !(0 != ~systemActive~0); 76#L606true 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~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 63#L879true __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 47#L560true assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 11#L566-1true [2020-11-29 23:56:10,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:10,955 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 23:56:10,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:10,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352286155] [2020-11-29 23:56:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:11,195 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:11,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:11,359 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:56:11,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:11,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1672140737, now seen corresponding path program 1 times [2020-11-29 23:56:11,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:11,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521549755] [2020-11-29 23:56:11,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:11,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521549755] [2020-11-29 23:56:11,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:11,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:56:11,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882661570] [2020-11-29 23:56:11,442 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:56:11,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:11,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:56:11,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:56:11,461 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 3 states. [2020-11-29 23:56:11,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:11,542 INFO L93 Difference]: Finished difference Result 154 states and 216 transitions. [2020-11-29 23:56:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:56:11,545 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 154 states and 216 transitions. [2020-11-29 23:56:11,552 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 98 [2020-11-29 23:56:11,566 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 154 states to 140 states and 201 transitions. [2020-11-29 23:56:11,567 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 140 [2020-11-29 23:56:11,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 140 [2020-11-29 23:56:11,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 201 transitions. [2020-11-29 23:56:11,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:56:11,574 INFO L691 BuchiCegarLoop]: Abstraction has 140 states and 201 transitions. [2020-11-29 23:56:11,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states and 201 transitions. [2020-11-29 23:56:11,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2020-11-29 23:56:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-11-29 23:56:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 198 transitions. [2020-11-29 23:56:11,628 INFO L714 BuchiCegarLoop]: Abstraction has 138 states and 198 transitions. [2020-11-29 23:56:11,628 INFO L594 BuchiCegarLoop]: Abstraction has 138 states and 198 transitions. [2020-11-29 23:56:11,628 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:56:11,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 138 states and 198 transitions. [2020-11-29 23:56:11,637 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 96 [2020-11-29 23:56:11,637 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:56:11,637 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:56:11,639 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:56:11,639 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:11,639 INFO L794 eck$LassoCheckResult]: Stem: 294#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(13);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(110, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 3 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string56.base, #t~string56.offset, 1);call write~init~int(80, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(117, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(109, #t~string56.base, 3 + #t~string56.offset, 1);call write~init~int(112, #t~string56.base, 4 + #t~string56.offset, 1);call write~init~int(58, #t~string56.base, 5 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 6 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string62.base, #t~string62.offset, 1);call write~init~int(32, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string64.base, #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 1 + #t~string64.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 269#L-1 havoc main_#res;havoc main_#t~ret43, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 270#L67 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; 313#L75 main_#t~ret43 := valid_product_#res;main_~tmp~3 := main_#t~ret43;havoc main_#t~ret43; 263#L533 assume 0 != main_~tmp~3; 264#L509 havoc test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_#t~nondet69, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 259#L566-1 [2020-11-29 23:56:11,640 INFO L796 eck$LassoCheckResult]: Loop: 259#L566-1 assume !false; 265#L778 assume test_~splverifierCounter~0 < 4; 267#L779 test_~tmp~7 := test_#t~nondet66;havoc test_#t~nondet66; 364#L787 assume !(0 != test_~tmp~7); 362#L787-1 test_~tmp___0~2 := test_#t~nondet67;havoc test_#t~nondet67; 356#L797 assume !(0 != test_~tmp___0~2); 352#L797-1 test_~tmp___2~0 := test_#t~nondet68;havoc test_#t~nondet68; 350#L807 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 326#L815-1 assume !(0 != ~pumpRunning~0); 253#L599 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret47, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 254#L631 assume !(0 != ~pumpRunning~0); 320#L606 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~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 315#L879 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 299#L560 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 259#L566-1 [2020-11-29 23:56:11,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:11,641 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 23:56:11,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:11,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272900356] [2020-11-29 23:56:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:11,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:11,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:11,873 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:56:11,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:11,875 INFO L82 PathProgramCache]: Analyzing trace with hash -323747826, now seen corresponding path program 1 times [2020-11-29 23:56:11,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:11,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178186301] [2020-11-29 23:56:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:11,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:11,898 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:11,903 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:56:11,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:11,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1279291700, now seen corresponding path program 1 times [2020-11-29 23:56:11,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:11,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840499502] [2020-11-29 23:56:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:12,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840499502] [2020-11-29 23:56:12,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:12,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:56:12,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691429160] [2020-11-29 23:56:12,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:12,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:12,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:12,135 INFO L87 Difference]: Start difference. First operand 138 states and 198 transitions. cyclomatic complexity: 63 Second operand 5 states. [2020-11-29 23:56:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:12,300 INFO L93 Difference]: Finished difference Result 469 states and 686 transitions. [2020-11-29 23:56:12,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:56:12,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 469 states and 686 transitions. [2020-11-29 23:56:12,311 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 348 [2020-11-29 23:56:12,319 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 469 states to 469 states and 686 transitions. [2020-11-29 23:56:12,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 469 [2020-11-29 23:56:12,321 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 469 [2020-11-29 23:56:12,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 469 states and 686 transitions. [2020-11-29 23:56:12,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:56:12,329 INFO L691 BuchiCegarLoop]: Abstraction has 469 states and 686 transitions. [2020-11-29 23:56:12,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states and 686 transitions. [2020-11-29 23:56:12,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 270. [2020-11-29 23:56:12,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-11-29 23:56:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 382 transitions. [2020-11-29 23:56:12,360 INFO L714 BuchiCegarLoop]: Abstraction has 270 states and 382 transitions. [2020-11-29 23:56:12,361 INFO L594 BuchiCegarLoop]: Abstraction has 270 states and 382 transitions. [2020-11-29 23:56:12,361 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:56:12,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 270 states and 382 transitions. [2020-11-29 23:56:12,365 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 192 [2020-11-29 23:56:12,365 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:56:12,365 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:56:12,366 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:56:12,367 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:12,367 INFO L794 eck$LassoCheckResult]: Stem: 925#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(13);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(110, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 3 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string56.base, #t~string56.offset, 1);call write~init~int(80, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(117, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(109, #t~string56.base, 3 + #t~string56.offset, 1);call write~init~int(112, #t~string56.base, 4 + #t~string56.offset, 1);call write~init~int(58, #t~string56.base, 5 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 6 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string62.base, #t~string62.offset, 1);call write~init~int(32, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string64.base, #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 1 + #t~string64.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 893#L-1 havoc main_#res;havoc main_#t~ret43, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 894#L67 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; 949#L75 main_#t~ret43 := valid_product_#res;main_~tmp~3 := main_#t~ret43;havoc main_#t~ret43; 887#L533 assume 0 != main_~tmp~3; 888#L509 havoc test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_#t~nondet69, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 930#L566-1 [2020-11-29 23:56:12,367 INFO L796 eck$LassoCheckResult]: Loop: 930#L566-1 assume !false; 1042#L778 assume test_~splverifierCounter~0 < 4; 920#L779 test_~tmp~7 := test_#t~nondet66;havoc test_#t~nondet66; 921#L787 assume !(0 != test_~tmp~7); 927#L787-1 test_~tmp___0~2 := test_#t~nondet67;havoc test_#t~nondet67; 895#L797 assume !(0 != test_~tmp___0~2); 896#L797-1 test_~tmp___2~0 := test_#t~nondet68;havoc test_#t~nondet68; 897#L807 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 901#L815-1 assume !(0 != ~pumpRunning~0); 1052#L599 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret47, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1047#L631 assume !(0 != ~pumpRunning~0); 1043#L606 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~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 951#L879 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 952#L560 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~4);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 934#L911 __utac_acc__Specification3_spec__1_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 935#L566 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 930#L566-1 [2020-11-29 23:56:12,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:12,368 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 23:56:12,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:12,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102844347] [2020-11-29 23:56:12,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:12,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:12,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:12,536 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:56:12,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:12,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1884009246, now seen corresponding path program 1 times [2020-11-29 23:56:12,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:12,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781061211] [2020-11-29 23:56:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:12,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:12,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:12,558 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:56:12,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:12,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1038683272, now seen corresponding path program 1 times [2020-11-29 23:56:12,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:12,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817031842] [2020-11-29 23:56:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:12,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:12,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:12,664 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:57:26,890 WARN L193 SmtUtils]: Spent 1.23 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 23:58:22,665 WARN L193 SmtUtils]: Spent 55.77 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 23:58:22,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:58:22 BoogieIcfgContainer [2020-11-29 23:58:22,852 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:58:22,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:58:22,853 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:58:22,853 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:58:22,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:10" (3/4) ... [2020-11-29 23:58:22,856 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 23:58:22,907 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_81d173b0-b678-4e6a-88d5-9057310bec32/bin/uautomizer/witness.graphml [2020-11-29 23:58:22,907 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:58:22,908 INFO L168 Benchmark]: Toolchain (without parser) took 134019.70 ms. Allocated memory was 102.8 MB in the beginning and 163.6 MB in the end (delta: 60.8 MB). Free memory was 70.7 MB in the beginning and 74.6 MB in the end (delta: -3.9 MB). Peak memory consumption was 55.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:22,909 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory was 40.1 MB in the beginning and 40.1 MB in the end (delta: 36.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:22,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.21 ms. Allocated memory is still 102.8 MB. Free memory was 70.4 MB in the beginning and 69.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:22,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.22 ms. Allocated memory is still 102.8 MB. Free memory was 68.7 MB in the beginning and 65.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:22,910 INFO L168 Benchmark]: Boogie Preprocessor took 84.16 ms. Allocated memory is still 102.8 MB. Free memory was 65.8 MB in the beginning and 63.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:22,910 INFO L168 Benchmark]: RCFGBuilder took 1070.56 ms. Allocated memory is still 102.8 MB. Free memory was 63.7 MB in the beginning and 44.1 MB in the end (delta: 19.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:22,911 INFO L168 Benchmark]: BuchiAutomizer took 132041.05 ms. Allocated memory was 102.8 MB in the beginning and 163.6 MB in the end (delta: 60.8 MB). Free memory was 44.1 MB in the beginning and 76.7 MB in the end (delta: -32.5 MB). Peak memory consumption was 67.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:22,911 INFO L168 Benchmark]: Witness Printer took 54.50 ms. Allocated memory is still 163.6 MB. Free memory was 76.7 MB in the beginning and 74.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:22,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory was 40.1 MB in the beginning and 40.1 MB in the end (delta: 36.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 692.21 ms. Allocated memory is still 102.8 MB. Free memory was 70.4 MB in the beginning and 69.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.22 ms. Allocated memory is still 102.8 MB. Free memory was 68.7 MB in the beginning and 65.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.16 ms. Allocated memory is still 102.8 MB. Free memory was 65.8 MB in the beginning and 63.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1070.56 ms. Allocated memory is still 102.8 MB. Free memory was 63.7 MB in the beginning and 44.1 MB in the end (delta: 19.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 132041.05 ms. Allocated memory was 102.8 MB in the beginning and 163.6 MB in the end (delta: 60.8 MB). Free memory was 44.1 MB in the beginning and 76.7 MB in the end (delta: -32.5 MB). Peak memory consumption was 67.7 MB. Max. memory is 16.1 GB. * Witness Printer took 54.50 ms. Allocated memory is still 163.6 MB. Free memory was 76.7 MB in the beginning and 74.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 270 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 131.9s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 131.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 201 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 270 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 258 SDtfs, 499 SDslu, 532 SDs, 0 SdLazy, 53 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 777]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=24410} State at position 1 is {NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=24410, NULL=0, NULL=24429, retValue_acc=0, NULL=0, NULL=24435, NULL=24434, NULL=24425, NULL=24426, methaneLevelCritical=0, NULL=24420, tmp=0, tmp___1=0, NULL=24417, NULL=0, NULL=0, tmp___0=1, NULL=24436, NULL=24428, NULL=24433, cleanupTimeShifts=4, NULL=24422, tmp=0, NULL=24414, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, \result=1, NULL=0, NULL=0, NULL=24415, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ddb2639=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58fd42c2=0, NULL=0, NULL=0, NULL=0, NULL=24418, NULL=0, NULL=0, NULL=24411, \result=1, head=0, pumpRunning=0, \result=0, NULL=24430, tmp=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f6412b5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@560aacc2=65, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42289cbc=0, NULL=24432, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1990e226=0, NULL=0, NULL=0, NULL=0, NULL=24431, NULL=24424, NULL=0, NULL=24412, retValue_acc=1, tmp___2=65, NULL=0, tmp___0=0, NULL=24419, NULL=24421, splverifierCounter=0, NULL=0, \result=0, NULL=24416, NULL=24437, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@304313b5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57549670=0, tmp___1=0, head=0, NULL=0, NULL=0, tmp=0, NULL=24413, NULL=0, NULL=0, NULL=0, NULL=24438, NULL=24423, NULL=24427, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@35f1a0d9=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L446] int cleanupTimeShifts = 4; [L592] int pumpRunning = 0; [L593] int systemActive = 1; [L836] int waterLevel = 1; [L837] int methaneLevelCritical = 0; [L524] int retValue_acc ; [L525] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L531] tmp = valid_product() [L533] COND TRUE \read(tmp) [L768] int splverifierCounter ; [L769] int tmp ; [L770] int tmp___0 ; [L771] int tmp___1 ; [L772] int tmp___2 ; [L775] splverifierCounter = 0 Loop: [L777] COND TRUE 1 [L779] COND TRUE splverifierCounter < 4 [L785] tmp = __VERIFIER_nondet_int() [L787] COND FALSE !(\read(tmp)) [L795] tmp___0 = __VERIFIER_nondet_int() [L797] COND FALSE !(\read(tmp___0)) [L805] tmp___2 = __VERIFIER_nondet_int() [L807] COND TRUE \read(tmp___2) [L762] systemActive = 1 [L599] COND FALSE !(\read(pumpRunning)) [L606] COND TRUE \read(systemActive) [L628] int tmp ; [L631] COND FALSE !(\read(pumpRunning)) [L552] int tmp ; [L553] int tmp___0 ; [L554] int tmp___1 ; [L875] int retValue_acc ; [L878] retValue_acc = methaneLevelCritical [L879] return (retValue_acc); [L558] tmp = isMethaneLevelCritical() [L560] COND FALSE !(\read(tmp)) [L907] int retValue_acc ; [L910] retValue_acc = waterLevel [L911] return (retValue_acc); [L564] tmp___0 = getWaterLevel() [L566] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...