./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be --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 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-dev-e943c26 [2021-10-21 19:28:48,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:28:48,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:28:48,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:28:48,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:28:48,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:28:48,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:28:48,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:28:48,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:28:48,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:28:48,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:28:48,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:28:48,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:28:48,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:28:48,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:28:48,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:28:48,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:28:48,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:28:48,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:28:48,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:28:48,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:28:48,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:28:48,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:28:48,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:28:48,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:28:48,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:28:48,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:28:48,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:28:48,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:28:48,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:28:48,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:28:48,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:28:48,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:28:48,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:28:48,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:28:48,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:28:48,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:28:48,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:28:48,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:28:48,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:28:48,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:28:48,658 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:28:48,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:28:48,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:28:48,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:28:48,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:28:48,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:28:48,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:28:48,693 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:28:48,693 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:28:48,694 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:28:48,694 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:28:48,694 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:28:48,694 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:28:48,695 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:28:48,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:28:48,695 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:28:48,695 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:28:48,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:28:48,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:28:48,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:28:48,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:28:48,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:28:48,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:28:48,697 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:28:48,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:28:48,697 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:28:48,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:28:48,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:28:48,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:28:48,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:28:48,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:28:48,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:28:48,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:28:48,700 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:28:48,700 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_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 [2021-10-21 19:28:48,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:28:49,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:28:49,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:28:49,035 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:28:49,037 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:28:49,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2021-10-21 19:28:49,117 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/data/143d1fb31/2ee7b324dc8a45168e07d47225a0fd35/FLAGcdaed8b9f [2021-10-21 19:28:49,677 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:28:49,678 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2021-10-21 19:28:49,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/data/143d1fb31/2ee7b324dc8a45168e07d47225a0fd35/FLAGcdaed8b9f [2021-10-21 19:28:49,946 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/data/143d1fb31/2ee7b324dc8a45168e07d47225a0fd35 [2021-10-21 19:28:49,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:28:49,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:28:49,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:28:49,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:28:49,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:28:49,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:28:49" (1/1) ... [2021-10-21 19:28:49,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ade5021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:49, skipping insertion in model container [2021-10-21 19:28:49,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:28:49" (1/1) ... [2021-10-21 19:28:49,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:28:50,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:28:50,312 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2021-10-21 19:28:50,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:28:50,325 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:28:50,416 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2021-10-21 19:28:50,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:28:50,444 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:28:50,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:50 WrapperNode [2021-10-21 19:28:50,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:28:50,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:28:50,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:28:50,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:28:50,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:50" (1/1) ... [2021-10-21 19:28:50,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:50" (1/1) ... [2021-10-21 19:28:50,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:28:50,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:28:50,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:28:50,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:28:50,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:50" (1/1) ... [2021-10-21 19:28:50,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:50" (1/1) ... [2021-10-21 19:28:50,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:50" (1/1) ... [2021-10-21 19:28:50,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:50" (1/1) ... [2021-10-21 19:28:50,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:50" (1/1) ... [2021-10-21 19:28:50,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:50" (1/1) ... [2021-10-21 19:28:50,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:50" (1/1) ... [2021-10-21 19:28:50,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:28:50,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:28:50,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:28:50,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:28:50,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:50" (1/1) ... [2021-10-21 19:28:50,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:50,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:50,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:50,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:28:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:28:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:28:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:28:50,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:28:51,513 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:28:51,513 INFO L299 CfgBuilder]: Removed 104 assume(true) statements. [2021-10-21 19:28:51,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:28:51 BoogieIcfgContainer [2021-10-21 19:28:51,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:28:51,516 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:28:51,516 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:28:51,524 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:28:51,525 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:28:51,525 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:28:49" (1/3) ... [2021-10-21 19:28:51,527 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bf52ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:28:51, skipping insertion in model container [2021-10-21 19:28:51,527 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:28:51,527 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:50" (2/3) ... [2021-10-21 19:28:51,528 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bf52ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:28:51, skipping insertion in model container [2021-10-21 19:28:51,528 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:28:51,528 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:28:51" (3/3) ... [2021-10-21 19:28:51,529 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2021-10-21 19:28:51,576 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:28:51,576 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:28:51,577 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:28:51,577 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:28:51,577 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:28:51,577 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:28:51,577 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:28:51,578 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:28:51,595 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 81 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:51,619 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-21 19:28:51,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:28:51,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:28:51,627 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:51,627 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:51,627 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:28:51,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 81 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:51,634 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-21 19:28:51,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:28:51,635 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:28:51,636 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:51,636 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:51,641 INFO L791 eck$LassoCheckResult]: Stem: 54#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~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(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(13);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string63.base, #t~string63.offset, 1);call write~init~int(80, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(117, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(109, #t~string63.base, 3 + #t~string63.offset, 1);call write~init~int(112, #t~string63.base, 4 + #t~string63.offset, 1);call write~init~int(58, #t~string63.base, 5 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 6 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string69.base, #t~string69.offset, 1);call write~init~int(32, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string71.base, #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 1 + #t~string71.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 39#L-1true havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~8, main_~tmp~3;havoc main_~retValue_acc~8;havoc main_~tmp~3; 11#L542true havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 79#L550true main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 46#L642true assume 0 != main_~tmp~3; 34#L616true ~methAndRunningLastTime~0 := 0; 43#L921true havoc test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_#t~nondet76, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 72#L932-1true [2021-10-21 19:28:51,642 INFO L793 eck$LassoCheckResult]: Loop: 72#L932-1true assume !false; 47#L848true assume test_~splverifierCounter~0 < 4; 69#L849true test_~tmp~6 := test_#t~nondet73;havoc test_#t~nondet73; 29#L857true assume !(0 != test_~tmp~6); 75#L857-1true test_~tmp___0~1 := test_#t~nondet74;havoc test_#t~nondet74; 41#L867true assume !(0 != test_~tmp___0~1); 8#L867-1true test_~tmp___2~0 := test_#t~nondet75;havoc test_#t~nondet75; 20#L877true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 74#L885-1true assume !(0 != ~pumpRunning~0); 44#L669true assume !(0 != ~systemActive~0); 77#L676true havoc __utac_acc__Specification2_spec__2_#t~ret77, __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 66#L100true __utac_acc__Specification2_spec__2_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret77;havoc __utac_acc__Specification2_spec__2_#t~ret77; 16#L932true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 72#L932-1true [2021-10-21 19:28:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:51,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-21 19:28:51,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:51,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292178041] [2021-10-21 19:28:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:51,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:51,889 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:52,076 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:52,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:52,079 INFO L82 PathProgramCache]: Analyzing trace with hash 12296212, now seen corresponding path program 1 times [2021-10-21 19:28:52,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:52,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812385326] [2021-10-21 19:28:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:52,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:28:52,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:28:52,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812385326] [2021-10-21 19:28:52,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812385326] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:28:52,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:28:52,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:28:52,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69309964] [2021-10-21 19:28:52,147 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:28:52,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:28:52,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:28:52,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:28:52,166 INFO L87 Difference]: Start difference. First operand has 81 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:52,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:28:52,220 INFO L93 Difference]: Finished difference Result 155 states and 223 transitions. [2021-10-21 19:28:52,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:28:52,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 155 states and 223 transitions. [2021-10-21 19:28:52,229 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 98 [2021-10-21 19:28:52,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 155 states to 141 states and 208 transitions. [2021-10-21 19:28:52,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2021-10-21 19:28:52,238 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 141 [2021-10-21 19:28:52,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 208 transitions. [2021-10-21 19:28:52,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:28:52,240 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 208 transitions. [2021-10-21 19:28:52,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 208 transitions. [2021-10-21 19:28:52,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2021-10-21 19:28:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 139 states have (on average 1.474820143884892) internal successors, (205), 138 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 205 transitions. [2021-10-21 19:28:52,278 INFO L704 BuchiCegarLoop]: Abstraction has 139 states and 205 transitions. [2021-10-21 19:28:52,278 INFO L587 BuchiCegarLoop]: Abstraction has 139 states and 205 transitions. [2021-10-21 19:28:52,278 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:28:52,278 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 139 states and 205 transitions. [2021-10-21 19:28:52,282 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 96 [2021-10-21 19:28:52,282 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:28:52,282 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:28:52,283 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:52,283 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:52,283 INFO L791 eck$LassoCheckResult]: Stem: 313#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~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(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(13);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string63.base, #t~string63.offset, 1);call write~init~int(80, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(117, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(109, #t~string63.base, 3 + #t~string63.offset, 1);call write~init~int(112, #t~string63.base, 4 + #t~string63.offset, 1);call write~init~int(58, #t~string63.base, 5 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 6 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string69.base, #t~string69.offset, 1);call write~init~int(32, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string71.base, #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 1 + #t~string71.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 299#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~8, main_~tmp~3;havoc main_~retValue_acc~8;havoc main_~tmp~3; 258#L542 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 259#L550 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 309#L642 assume 0 != main_~tmp~3; 294#L616 ~methAndRunningLastTime~0 := 0; 295#L921 havoc test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_#t~nondet76, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 305#L932-1 [2021-10-21 19:28:52,284 INFO L793 eck$LassoCheckResult]: Loop: 305#L932-1 assume !false; 359#L848 assume test_~splverifierCounter~0 < 4; 360#L849 test_~tmp~6 := test_#t~nondet73;havoc test_#t~nondet73; 383#L857 assume !(0 != test_~tmp~6); 381#L857-1 test_~tmp___0~1 := test_#t~nondet74;havoc test_#t~nondet74; 380#L867 assume !(0 != test_~tmp___0~1); 377#L867-1 test_~tmp___2~0 := test_#t~nondet75;havoc test_#t~nondet75; 375#L877 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 272#L885-1 assume !(0 != ~pumpRunning~0); 370#L669 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret54, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 368#L701 assume !(0 == ~pumpRunning~0); 366#L676 havoc __utac_acc__Specification2_spec__2_#t~ret77, __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 365#L100 __utac_acc__Specification2_spec__2_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret77;havoc __utac_acc__Specification2_spec__2_#t~ret77; 363#L932 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 305#L932-1 [2021-10-21 19:28:52,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:52,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-21 19:28:52,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:52,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943893109] [2021-10-21 19:28:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:52,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:52,348 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:52,422 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:52,423 INFO L82 PathProgramCache]: Analyzing trace with hash 349571873, now seen corresponding path program 1 times [2021-10-21 19:28:52,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:52,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847033564] [2021-10-21 19:28:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:52,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:28:52,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:28:52,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847033564] [2021-10-21 19:28:52,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847033564] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:28:52,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:28:52,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:28:52,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736803713] [2021-10-21 19:28:52,445 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:28:52,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:28:52,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:28:52,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:28:52,447 INFO L87 Difference]: Start difference. First operand 139 states and 205 transitions. cyclomatic complexity: 69 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:52,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:28:52,521 INFO L93 Difference]: Finished difference Result 228 states and 323 transitions. [2021-10-21 19:28:52,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:28:52,522 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 323 transitions. [2021-10-21 19:28:52,526 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 163 [2021-10-21 19:28:52,529 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 228 states and 323 transitions. [2021-10-21 19:28:52,529 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 228 [2021-10-21 19:28:52,530 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 228 [2021-10-21 19:28:52,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 228 states and 323 transitions. [2021-10-21 19:28:52,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:28:52,532 INFO L681 BuchiCegarLoop]: Abstraction has 228 states and 323 transitions. [2021-10-21 19:28:52,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states and 323 transitions. [2021-10-21 19:28:52,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-10-21 19:28:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 228 states have (on average 1.4166666666666667) internal successors, (323), 227 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 323 transitions. [2021-10-21 19:28:52,548 INFO L704 BuchiCegarLoop]: Abstraction has 228 states and 323 transitions. [2021-10-21 19:28:52,548 INFO L587 BuchiCegarLoop]: Abstraction has 228 states and 323 transitions. [2021-10-21 19:28:52,548 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:28:52,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 228 states and 323 transitions. [2021-10-21 19:28:52,550 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 163 [2021-10-21 19:28:52,551 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:28:52,551 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:28:52,552 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:52,552 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:52,552 INFO L791 eck$LassoCheckResult]: Stem: 689#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~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(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(13);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string63.base, #t~string63.offset, 1);call write~init~int(80, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(117, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(109, #t~string63.base, 3 + #t~string63.offset, 1);call write~init~int(112, #t~string63.base, 4 + #t~string63.offset, 1);call write~init~int(58, #t~string63.base, 5 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 6 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string69.base, #t~string69.offset, 1);call write~init~int(32, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string71.base, #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 1 + #t~string71.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 675#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~8, main_~tmp~3;havoc main_~retValue_acc~8;havoc main_~tmp~3; 631#L542 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 632#L550 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 684#L642 assume 0 != main_~tmp~3; 667#L616 ~methAndRunningLastTime~0 := 0; 668#L921 havoc test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_#t~nondet76, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 641#L932-1 [2021-10-21 19:28:52,552 INFO L793 eck$LassoCheckResult]: Loop: 641#L932-1 assume !false; 704#L848 assume test_~splverifierCounter~0 < 4; 702#L849 test_~tmp~6 := test_#t~nondet73;havoc test_#t~nondet73; 656#L857 assume !(0 != test_~tmp~6); 658#L857-1 test_~tmp___0~1 := test_#t~nondet74;havoc test_#t~nondet74; 679#L867 assume !(0 != test_~tmp___0~1); 626#L867-1 test_~tmp___2~0 := test_#t~nondet75;havoc test_#t~nondet75; 627#L877 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 646#L885-1 assume !(0 != ~pumpRunning~0); 705#L669 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret54, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 806#L701 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret72, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 805#L140 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 703#L145 isHighWaterLevel_#t~ret72 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret72;havoc isHighWaterLevel_#t~ret72; 647#L803 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~0 := 0; 648#L803-2 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 698#L809 processEnvironment_#t~ret54 := isHighWaterLevel_#res;processEnvironment_~tmp~4 := processEnvironment_#t~ret54;havoc processEnvironment_#t~ret54; 670#L705 assume !(0 != processEnvironment_~tmp~4); 672#L676 havoc __utac_acc__Specification2_spec__2_#t~ret77, __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 700#L100 __utac_acc__Specification2_spec__2_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret77;havoc __utac_acc__Specification2_spec__2_#t~ret77; 639#L932 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 641#L932-1 [2021-10-21 19:28:52,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:52,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-21 19:28:52,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:52,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752579516] [2021-10-21 19:28:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:52,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:52,600 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:52,654 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:52,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:52,655 INFO L82 PathProgramCache]: Analyzing trace with hash -678407123, now seen corresponding path program 1 times [2021-10-21 19:28:52,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:52,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568085535] [2021-10-21 19:28:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:52,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:52,663 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:52,672 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:52,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:52,673 INFO L82 PathProgramCache]: Analyzing trace with hash 487169651, now seen corresponding path program 1 times [2021-10-21 19:28:52,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:52,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927195089] [2021-10-21 19:28:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:52,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:52,714 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:52,807 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:29:47,613 WARN L207 SmtUtils]: Spent 54.50 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-21 19:30:45,087 WARN L207 SmtUtils]: Spent 27.59 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-21 19:30:45,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:30:45 BoogieIcfgContainer [2021-10-21 19:30:45,238 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:30:45,240 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:30:45,240 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:30:45,241 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:30:45,241 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:28:51" (3/4) ... [2021-10-21 19:30:45,244 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:30:45,314 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:30:45,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:30:45,315 INFO L168 Benchmark]: Toolchain (without parser) took 115364.75 ms. Allocated memory was 115.3 MB in the beginning and 184.5 MB in the end (delta: 69.2 MB). Free memory was 74.0 MB in the beginning and 133.6 MB in the end (delta: -59.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:45,316 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 115.3 MB. Free memory was 92.0 MB in the beginning and 91.9 MB in the end (delta: 117.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:30:45,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.94 ms. Allocated memory is still 115.3 MB. Free memory was 73.9 MB in the beginning and 78.6 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:45,317 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.62 ms. Allocated memory is still 115.3 MB. Free memory was 78.6 MB in the beginning and 75.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:45,318 INFO L168 Benchmark]: Boogie Preprocessor took 57.09 ms. Allocated memory is still 115.3 MB. Free memory was 75.7 MB in the beginning and 73.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:45,318 INFO L168 Benchmark]: RCFGBuilder took 946.00 ms. Allocated memory was 115.3 MB in the beginning and 184.5 MB in the end (delta: 69.2 MB). Free memory was 73.6 MB in the beginning and 146.4 MB in the end (delta: -72.8 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:45,319 INFO L168 Benchmark]: BuchiAutomizer took 113722.71 ms. Allocated memory is still 184.5 MB. Free memory was 146.4 MB in the beginning and 136.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 110.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:45,319 INFO L168 Benchmark]: Witness Printer took 73.93 ms. Allocated memory is still 184.5 MB. Free memory was 135.7 MB in the beginning and 133.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:45,322 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 115.3 MB. Free memory was 92.0 MB in the beginning and 91.9 MB in the end (delta: 117.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 492.94 ms. Allocated memory is still 115.3 MB. Free memory was 73.9 MB in the beginning and 78.6 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.62 ms. Allocated memory is still 115.3 MB. Free memory was 78.6 MB in the beginning and 75.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.09 ms. Allocated memory is still 115.3 MB. Free memory was 75.7 MB in the beginning and 73.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 946.00 ms. Allocated memory was 115.3 MB in the beginning and 184.5 MB in the end (delta: 69.2 MB). Free memory was 73.6 MB in the beginning and 146.4 MB in the end (delta: -72.8 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 113722.71 ms. Allocated memory is still 184.5 MB. Free memory was 146.4 MB in the beginning and 136.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 110.0 MB. Max. memory is 16.1 GB. * Witness Printer took 73.93 ms. Allocated memory is still 184.5 MB. Free memory was 135.7 MB in the beginning and 133.6 MB in the end (delta: 2.1 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 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 228 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 113.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 113.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 38.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 228 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 235 SDtfs, 199 SDslu, 158 SDs, 0 SdLazy, 32 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 847]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=6078} State at position 1 is {NULL=0, NULL=6103, NULL=0, NULL=0, NULL=6078, NULL=6082, NULL=6087, NULL=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2aacbb03=0, tmp=0, NULL=0, tmp___1=0, NULL=0, NULL=6099, NULL=6096, cleanupTimeShifts=4, NULL=6090, NULL=6101, waterLevel=1, NULL=0, NULL=0, NULL=0, NULL=6092, \result=1, head=0, pumpRunning=0, NULL=6079, tmp=1, NULL=0, retValue_acc=1, NULL=0, \result=1, NULL=6093, NULL=0, retValue_acc=0, tmp=1, tmp___0=0, methAndRunningLastTime=0, NULL=6083, head=0, tmp=0, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=6085, NULL=6097, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30beb178=0, NULL=6102, NULL=6098, tmp___0=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ce97280=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=6080, NULL=0, NULL=6105, \result=0, NULL=0, NULL=6089, NULL=0, NULL=6104, NULL=6088, \result=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7cc6fd74=0, NULL=6100, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@9dad1d4=0, NULL=6091, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@493e64cd=78, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c98df5d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c91cbc8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e204a53=0, NULL=6086, retValue_acc=1, NULL=6106, tmp___2=78, tmp___0=0, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=6094, NULL=6095, NULL=6084, NULL=0, NULL=6081, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int cleanupTimeShifts = 4; [L661] int pumpRunning = 0; [L662] int systemActive = 1; [L915] int methAndRunningLastTime ; [L633] int retValue_acc ; [L634] int tmp ; [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); [L640] tmp = valid_product() [L642] COND TRUE \read(tmp) [L920] methAndRunningLastTime = 0 [L838] int splverifierCounter ; [L839] int tmp ; [L840] int tmp___0 ; [L841] int tmp___1 ; [L842] int tmp___2 ; [L845] splverifierCounter = 0 Loop: [L847] COND TRUE 1 [L849] COND TRUE splverifierCounter < 4 [L855] tmp = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp)) [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___0)) [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND TRUE \read(tmp___2) [L832] systemActive = 1 [L669] COND FALSE !(\read(pumpRunning)) [L676] COND TRUE \read(systemActive) [L698] int tmp ; [L701] COND TRUE ! pumpRunning [L795] int retValue_acc ; [L796] int tmp ; [L797] int tmp___0 ; [L137] int retValue_acc ; [L140] COND TRUE waterLevel < 2 [L141] retValue_acc = 1 [L142] return (retValue_acc); [L801] tmp = isHighWaterSensorDry() [L803] COND TRUE \read(tmp) [L804] tmp___0 = 0 [L808] retValue_acc = tmp___0 [L809] return (retValue_acc); [L703] tmp = isHighWaterLevel() [L705] COND FALSE !(\read(tmp)) [L925] int tmp ; [L926] int tmp___0 ; [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L930] tmp = isMethaneLevelCritical() [L932] COND FALSE !(\read(tmp)) [L948] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:30:45,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7667c409-8616-43a1-a9f4-64dfd550c78b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...