./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product44.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_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/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_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/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_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/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 40ec21bd2775f54496a6d376e4b1b562b086a4c18151452e7b83204c384db515 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:34:27,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:34:27,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:34:27,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:34:27,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:34:27,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:34:27,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:34:27,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:34:27,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:34:27,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:34:27,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:34:27,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:34:27,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:34:27,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:34:27,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:34:27,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:34:27,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:34:27,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:34:27,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:34:27,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:34:27,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:34:27,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:34:27,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:34:27,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:34:27,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:34:27,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:34:27,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:34:27,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:34:27,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:34:27,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:34:27,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:34:27,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:34:27,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:34:27,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:34:27,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:34:27,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:34:27,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:34:27,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:34:27,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:34:27,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:34:27,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:34:27,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:34:27,655 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:34:27,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:34:27,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:34:27,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:34:27,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:34:27,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:34:27,657 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:34:27,657 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:34:27,657 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:34:27,658 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:34:27,658 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:34:27,658 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:34:27,658 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:34:27,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:34:27,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:34:27,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:34:27,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:34:27,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:34:27,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:34:27,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:34:27,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:34:27,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:34:27,660 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:34:27,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:34:27,661 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:34:27,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:34:27,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:34:27,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:34:27,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:34:27,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:34:27,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:34:27,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:34:27,663 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:34:27,663 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_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40ec21bd2775f54496a6d376e4b1b562b086a4c18151452e7b83204c384db515 [2021-10-21 19:34:27,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:34:27,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:34:27,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:34:27,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:34:27,934 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:34:27,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c [2021-10-21 19:34:28,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/data/87e96b937/892148bbf29b4c5aac2b30a41b9d52d7/FLAGd6606c160 [2021-10-21 19:34:28,615 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:34:28,616 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c [2021-10-21 19:34:28,636 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/data/87e96b937/892148bbf29b4c5aac2b30a41b9d52d7/FLAGd6606c160 [2021-10-21 19:34:28,867 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/data/87e96b937/892148bbf29b4c5aac2b30a41b9d52d7 [2021-10-21 19:34:28,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:34:28,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:34:28,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:34:28,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:34:28,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:34:28,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:34:28" (1/1) ... [2021-10-21 19:34:28,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae59f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:28, skipping insertion in model container [2021-10-21 19:34:28,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:34:28" (1/1) ... [2021-10-21 19:34:28,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:34:28,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:34:29,203 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_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c[5279,5292] [2021-10-21 19:34:29,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:34:29,347 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:34:29,385 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_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c[5279,5292] [2021-10-21 19:34:29,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:34:29,455 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:34:29,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:29 WrapperNode [2021-10-21 19:34:29,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:34:29,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:34:29,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:34:29,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:34:29,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:29" (1/1) ... [2021-10-21 19:34:29,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:29" (1/1) ... [2021-10-21 19:34:29,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:34:29,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:34:29,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:34:29,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:34:29,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:29" (1/1) ... [2021-10-21 19:34:29,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:29" (1/1) ... [2021-10-21 19:34:29,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:29" (1/1) ... [2021-10-21 19:34:29,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:29" (1/1) ... [2021-10-21 19:34:29,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:29" (1/1) ... [2021-10-21 19:34:29,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:29" (1/1) ... [2021-10-21 19:34:29,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:29" (1/1) ... [2021-10-21 19:34:29,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:34:29,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:34:29,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:34:29,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:34:29,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:29" (1/1) ... [2021-10-21 19:34:29,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:34:29,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:34:29,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:34:29,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:34:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:34:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:34:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:34:29,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:34:30,603 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:34:30,604 INFO L299 CfgBuilder]: Removed 126 assume(true) statements. [2021-10-21 19:34:30,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:34:30 BoogieIcfgContainer [2021-10-21 19:34:30,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:34:30,610 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:34:30,610 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:34:30,614 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:34:30,615 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:34:30,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:34:28" (1/3) ... [2021-10-21 19:34:30,617 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29d9b475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:34:30, skipping insertion in model container [2021-10-21 19:34:30,617 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:34:30,617 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:34:29" (2/3) ... [2021-10-21 19:34:30,618 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29d9b475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:34:30, skipping insertion in model container [2021-10-21 19:34:30,618 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:34:30,618 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:34:30" (3/3) ... [2021-10-21 19:34:30,620 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product44.cil.c [2021-10-21 19:34:30,675 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:34:30,675 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:34:30,675 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:34:30,676 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:34:30,676 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:34:30,676 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:34:30,676 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:34:30,676 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:34:30,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 92 states, 91 states have (on average 1.5164835164835164) internal successors, (138), 91 states have internal predecessors, (138), 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 19:34:30,737 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-10-21 19:34:30,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:34:30,738 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:34:30,747 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:34:30,747 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:34:30,747 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:34:30,749 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 92 states, 91 states have (on average 1.5164835164835164) internal successors, (138), 91 states have internal predecessors, (138), 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 19:34:30,769 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-10-21 19:34:30,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:34:30,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:34:30,770 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:34:30,770 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:34:30,783 INFO L791 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 59#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 68#L311true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 93#L319true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 79#L140true assume 0 != main_~tmp~0; 64#L113true havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 66#L173-1true [2021-10-21 19:34:30,785 INFO L793 eck$LassoCheckResult]: Loop: 66#L173-1true assume !false; 83#L907true assume test_~splverifierCounter~0 < 4; 9#L908true test_~tmp~8 := test_#t~nondet77;havoc test_#t~nondet77; 69#L916true assume !(0 != test_~tmp~8); 12#L916-1true test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 42#L926true assume !(0 != test_~tmp___0~2); 72#L926-1true test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 56#L936true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 33#L944-1true assume !(0 != ~pumpRunning~0); 4#L710true assume !(0 != ~systemActive~0); 29#L717true havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;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~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 14#L238-1true __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 30#L167true assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 66#L173-1true [2021-10-21 19:34:30,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:34:30,791 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-21 19:34:30,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:34:30,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202790439] [2021-10-21 19:34:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:34:30,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:34:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:31,117 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:34:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:31,334 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:34:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:34:31,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1671648193, now seen corresponding path program 1 times [2021-10-21 19:34:31,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:34:31,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717291949] [2021-10-21 19:34:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:34:31,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:34:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:34:31,401 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 19:34:31,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:34:31,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717291949] [2021-10-21 19:34:31,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717291949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:34:31,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:34:31,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:34:31,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077081280] [2021-10-21 19:34:31,408 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:34:31,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:34:31,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:34:31,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:34:31,426 INFO L87 Difference]: Start difference. First operand has 92 states, 91 states have (on average 1.5164835164835164) internal successors, (138), 91 states have internal predecessors, (138), 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 19:34:31,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:34:31,481 INFO L93 Difference]: Finished difference Result 178 states and 252 transitions. [2021-10-21 19:34:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:34:31,483 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 252 transitions. [2021-10-21 19:34:31,489 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 114 [2021-10-21 19:34:31,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 164 states and 237 transitions. [2021-10-21 19:34:31,496 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 164 [2021-10-21 19:34:31,497 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 164 [2021-10-21 19:34:31,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 164 states and 237 transitions. [2021-10-21 19:34:31,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:34:31,500 INFO L681 BuchiCegarLoop]: Abstraction has 164 states and 237 transitions. [2021-10-21 19:34:31,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states and 237 transitions. [2021-10-21 19:34:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2021-10-21 19:34:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 162 states have (on average 1.4444444444444444) internal successors, (234), 161 states have internal predecessors, (234), 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 19:34:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 234 transitions. [2021-10-21 19:34:31,544 INFO L704 BuchiCegarLoop]: Abstraction has 162 states and 234 transitions. [2021-10-21 19:34:31,544 INFO L587 BuchiCegarLoop]: Abstraction has 162 states and 234 transitions. [2021-10-21 19:34:31,544 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:34:31,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 162 states and 234 transitions. [2021-10-21 19:34:31,547 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 112 [2021-10-21 19:34:31,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:34:31,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:34:31,548 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:34:31,548 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:34:31,549 INFO L791 eck$LassoCheckResult]: Stem: 365#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 351#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 352#L311 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 362#L319 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 367#L140 assume 0 != main_~tmp~0; 358#L113 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 359#L173-1 [2021-10-21 19:34:31,549 INFO L793 eck$LassoCheckResult]: Loop: 359#L173-1 assume !false; 370#L907 assume test_~splverifierCounter~0 < 4; 371#L908 test_~tmp~8 := test_#t~nondet77;havoc test_#t~nondet77; 400#L916 assume !(0 != test_~tmp~8); 398#L916-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 397#L926 assume !(0 != test_~tmp___0~2); 395#L926-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 394#L936 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 349#L944-1 assume !(0 != ~pumpRunning~0); 391#L710 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 384#L742 assume !(0 == ~pumpRunning~0); 382#L717 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;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~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 381#L238-1 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 380#L167 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 359#L173-1 [2021-10-21 19:34:31,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:34:31,549 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-21 19:34:31,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:34:31,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5930938] [2021-10-21 19:34:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:34:31,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:34:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:31,649 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:34:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:31,759 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:34:31,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:34:31,760 INFO L82 PathProgramCache]: Analyzing trace with hash -323255282, now seen corresponding path program 1 times [2021-10-21 19:34:31,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:34:31,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210340227] [2021-10-21 19:34:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:34:31,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:34:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:34:31,793 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 19:34:31,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:34:31,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210340227] [2021-10-21 19:34:31,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210340227] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:34:31,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:34:31,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:34:31,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478800422] [2021-10-21 19:34:31,800 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:34:31,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:34:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:34:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:34:31,805 INFO L87 Difference]: Start difference. First operand 162 states and 234 transitions. cyclomatic complexity: 75 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 19:34:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:34:31,923 INFO L93 Difference]: Finished difference Result 257 states and 358 transitions. [2021-10-21 19:34:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:34:31,924 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 257 states and 358 transitions. [2021-10-21 19:34:31,928 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 183 [2021-10-21 19:34:31,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 257 states to 257 states and 358 transitions. [2021-10-21 19:34:31,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 257 [2021-10-21 19:34:31,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2021-10-21 19:34:31,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 257 states and 358 transitions. [2021-10-21 19:34:31,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:34:31,935 INFO L681 BuchiCegarLoop]: Abstraction has 257 states and 358 transitions. [2021-10-21 19:34:31,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states and 358 transitions. [2021-10-21 19:34:31,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-10-21 19:34:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 257 states have (on average 1.3929961089494163) internal successors, (358), 256 states have internal predecessors, (358), 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 19:34:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 358 transitions. [2021-10-21 19:34:31,950 INFO L704 BuchiCegarLoop]: Abstraction has 257 states and 358 transitions. [2021-10-21 19:34:31,950 INFO L587 BuchiCegarLoop]: Abstraction has 257 states and 358 transitions. [2021-10-21 19:34:31,951 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:34:31,951 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 257 states and 358 transitions. [2021-10-21 19:34:31,953 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 183 [2021-10-21 19:34:31,953 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:34:31,954 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:34:31,954 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:34:31,955 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 19:34:31,955 INFO L791 eck$LassoCheckResult]: Stem: 797#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 782#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 783#L311 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 793#L319 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 798#L140 assume 0 != main_~tmp~0; 788#L113 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 789#L173-1 [2021-10-21 19:34:31,955 INFO L793 eck$LassoCheckResult]: Loop: 789#L173-1 assume !false; 944#L907 assume test_~splverifierCounter~0 < 4; 943#L908 test_~tmp~8 := test_#t~nondet77;havoc test_#t~nondet77; 942#L916 assume !(0 != test_~tmp~8); 940#L916-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 939#L926 assume !(0 != test_~tmp___0~2); 937#L926-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 936#L936 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 778#L944-1 assume !(0 != ~pumpRunning~0); 704#L710 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 705#L742 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~3;havoc isHighWaterSensorDry_~retValue_acc~3; 779#L278 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~3 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~3; 765#L283 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 732#L862 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 733#L862-2 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 761#L868 processEnvironment_#t~ret57 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret57;havoc processEnvironment_#t~ret57; 747#L746 assume !(0 != processEnvironment_~tmp~5); 748#L717 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;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~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 952#L238-1 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 947#L167 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 789#L173-1 [2021-10-21 19:34:31,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:34:31,959 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-21 19:34:31,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:34:31,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690259751] [2021-10-21 19:34:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:34:31,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:34:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:32,021 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:34:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:32,116 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:34:32,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:34:32,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1551152038, now seen corresponding path program 1 times [2021-10-21 19:34:32,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:34:32,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649273920] [2021-10-21 19:34:32,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:34:32,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:34:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:32,132 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:34:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:32,141 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:34:32,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:34:32,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1536440064, now seen corresponding path program 1 times [2021-10-21 19:34:32,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:34:32,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122622038] [2021-10-21 19:34:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:34:32,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:34:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:34:32,248 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 19:34:32,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:34:32,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122622038] [2021-10-21 19:34:32,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122622038] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:34:32,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:34:32,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:34:32,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184496201] [2021-10-21 19:34:32,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:34:32,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:34:32,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:34:32,564 INFO L87 Difference]: Start difference. First operand 257 states and 358 transitions. cyclomatic complexity: 104 Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 19:34:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:34:32,722 INFO L93 Difference]: Finished difference Result 856 states and 1198 transitions. [2021-10-21 19:34:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:34:32,722 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 856 states and 1198 transitions. [2021-10-21 19:34:32,734 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 646 [2021-10-21 19:34:32,743 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 856 states to 856 states and 1198 transitions. [2021-10-21 19:34:32,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 856 [2021-10-21 19:34:32,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 856 [2021-10-21 19:34:32,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 856 states and 1198 transitions. [2021-10-21 19:34:32,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:34:32,753 INFO L681 BuchiCegarLoop]: Abstraction has 856 states and 1198 transitions. [2021-10-21 19:34:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states and 1198 transitions. [2021-10-21 19:34:32,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 508. [2021-10-21 19:34:32,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 508 states have (on average 1.3661417322834646) internal successors, (694), 507 states have internal predecessors, (694), 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 19:34:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 694 transitions. [2021-10-21 19:34:32,799 INFO L704 BuchiCegarLoop]: Abstraction has 508 states and 694 transitions. [2021-10-21 19:34:32,799 INFO L587 BuchiCegarLoop]: Abstraction has 508 states and 694 transitions. [2021-10-21 19:34:32,799 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:34:32,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 508 states and 694 transitions. [2021-10-21 19:34:32,802 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 366 [2021-10-21 19:34:32,803 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:34:32,803 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:34:32,804 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:34:32,804 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, 1, 1] [2021-10-21 19:34:32,805 INFO L791 eck$LassoCheckResult]: Stem: 1938#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1920#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1921#L311 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 1933#L319 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1939#L140 assume 0 != main_~tmp~0; 1927#L113 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1928#L173-1 [2021-10-21 19:34:32,805 INFO L793 eck$LassoCheckResult]: Loop: 1928#L173-1 assume !false; 2239#L907 assume test_~splverifierCounter~0 < 4; 1844#L908 test_~tmp~8 := test_#t~nondet77;havoc test_#t~nondet77; 1845#L916 assume !(0 != test_~tmp~8); 1851#L916-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 1852#L926 assume !(0 != test_~tmp___0~2); 1900#L926-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 1915#L936 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1850#L944-1 assume !(0 != ~pumpRunning~0); 2336#L710 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 2335#L742 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~3;havoc isHighWaterSensorDry_~retValue_acc~3; 2321#L278 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~3 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~3; 2334#L283 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 2333#L862 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 2332#L862-2 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 2324#L868 processEnvironment_#t~ret57 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret57;havoc processEnvironment_#t~ret57; 2323#L746 assume !(0 != processEnvironment_~tmp~5); 1881#L717 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;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~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 1855#L238-1 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 1856#L167 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~1);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~2;havoc getWaterLevel_~retValue_acc~2;getWaterLevel_~retValue_acc~2 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~2; 1882#L270 __utac_acc__Specification3_spec__1_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret9;havoc __utac_acc__Specification3_spec__1_#t~ret9; 1940#L173 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1928#L173-1 [2021-10-21 19:34:32,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:34:32,806 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-21 19:34:32,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:34:32,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210488981] [2021-10-21 19:34:32,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:34:32,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:34:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:32,856 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:34:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:32,927 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:34:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:34:32,928 INFO L82 PathProgramCache]: Analyzing trace with hash -303450068, now seen corresponding path program 1 times [2021-10-21 19:34:32,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:34:32,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043867170] [2021-10-21 19:34:32,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:34:32,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:34:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:32,936 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:34:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:32,944 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:34:32,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:34:32,945 INFO L82 PathProgramCache]: Analyzing trace with hash 949855058, now seen corresponding path program 1 times [2021-10-21 19:34:32,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:34:32,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511712235] [2021-10-21 19:34:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:34:32,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:34:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:32,999 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:34:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:33,051 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:34,121 WARN L207 SmtUtils]: Spent 1.01 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-21 19:36:38,570 WARN L207 SmtUtils]: Spent 30.41 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-21 19:36:38,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:36:38 BoogieIcfgContainer [2021-10-21 19:36:38,700 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:36:38,701 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:36:38,701 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:36:38,701 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:36:38,702 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:34:30" (3/4) ... [2021-10-21 19:36:38,706 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:36:38,777 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:36:38,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:36:38,782 INFO L168 Benchmark]: Toolchain (without parser) took 129903.76 ms. Allocated memory was 113.2 MB in the beginning and 167.8 MB in the end (delta: 54.5 MB). Free memory was 73.1 MB in the beginning and 107.6 MB in the end (delta: -34.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:38,783 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 113.2 MB. Free memory was 90.3 MB in the beginning and 90.2 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:36:38,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.58 ms. Allocated memory is still 113.2 MB. Free memory was 73.0 MB in the beginning and 80.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:38,784 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.35 ms. Allocated memory is still 113.2 MB. Free memory was 80.7 MB in the beginning and 77.5 MB in the end (delta: 3.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:36:38,784 INFO L168 Benchmark]: Boogie Preprocessor took 40.01 ms. Allocated memory is still 113.2 MB. Free memory was 77.5 MB in the beginning and 75.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:38,785 INFO L168 Benchmark]: RCFGBuilder took 1014.30 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 74.8 MB in the beginning and 110.6 MB in the end (delta: -35.7 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:38,785 INFO L168 Benchmark]: BuchiAutomizer took 128090.31 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 110.3 MB in the beginning and 109.7 MB in the end (delta: 525.9 kB). Peak memory consumption was 107.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:38,787 INFO L168 Benchmark]: Witness Printer took 80.31 ms. Allocated memory is still 167.8 MB. Free memory was 109.7 MB in the beginning and 107.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:38,789 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 113.2 MB. Free memory was 90.3 MB in the beginning and 90.2 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 576.58 ms. Allocated memory is still 113.2 MB. Free memory was 73.0 MB in the beginning and 80.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.35 ms. Allocated memory is still 113.2 MB. Free memory was 80.7 MB in the beginning and 77.5 MB in the end (delta: 3.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.01 ms. Allocated memory is still 113.2 MB. Free memory was 77.5 MB in the beginning and 75.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1014.30 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 74.8 MB in the beginning and 110.6 MB in the end (delta: -35.7 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 128090.31 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 110.3 MB in the beginning and 109.7 MB in the end (delta: 525.9 kB). Peak memory consumption was 107.5 MB. Max. memory is 16.1 GB. * Witness Printer took 80.31 ms. Allocated memory is still 167.8 MB. Free memory was 109.7 MB in the beginning and 107.6 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 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 508 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 128.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 127.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 89.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 350 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 508 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 419 SDtfs, 688 SDslu, 689 SDs, 0 SdLazy, 111 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 172.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 906]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=1, NULL=26, NULL=0, NULL=0, NULL=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f9d5b91=0, NULL=0, tmp___1=0, tmp=0, NULL=0, NULL=29, tmp=0, cleanupTimeShifts=4, NULL=22, NULL=35, NULL=33, waterLevel=1, NULL=0, NULL=0, NULL=10, retValue_acc=1, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@51c576ec=0, \result=1, NULL=11, NULL=0, retValue_acc=0, NULL=14, NULL=0, tmp=1, NULL=0, tmp___0=0, NULL=18, head=0, tmp=0, NULL=21, retValue_acc=0, retValue_acc=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3727075=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e628b88=0, NULL=0, NULL=0, NULL=13, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d79e169=0, tmp___0=0, NULL=0, NULL=0, NULL=23, NULL=0, tmp___0=1, NULL=20, NULL=15, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79412404=87, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@214e25a6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42b1dcec=0, NULL=0, systemActive=1, NULL=19, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@116f5a=0, NULL=0, NULL=36, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=28, NULL=30, NULL=12, \result=0, NULL=32, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=17, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@393c7249=0, NULL=37, tmp___2=87, splverifierCounter=0, NULL=0, \result=0, NULL=27, tmp___1=0, NULL=0, NULL=34, NULL=25, NULL=24, NULL=16, NULL=31} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int cleanupTimeShifts = 4; [L195] int waterLevel = 1; [L196] int methaneLevelCritical = 0; [L502] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L703] int pumpRunning = 0; [L704] int systemActive = 1; [L131] int retValue_acc ; [L132] int tmp ; [L315] int retValue_acc ; [L318] retValue_acc = 1 [L319] return (retValue_acc); [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L897] int splverifierCounter ; [L898] int tmp ; [L899] int tmp___0 ; [L900] int tmp___1 ; [L901] int tmp___2 ; [L904] splverifierCounter = 0 Loop: [L906] COND TRUE 1 [L908] COND TRUE splverifierCounter < 4 [L914] tmp = __VERIFIER_nondet_int() [L916] COND FALSE !(\read(tmp)) [L924] tmp___0 = __VERIFIER_nondet_int() [L926] COND FALSE !(\read(tmp___0)) [L934] tmp___2 = __VERIFIER_nondet_int() [L936] COND TRUE \read(tmp___2) [L891] systemActive = 1 [L710] COND FALSE !(\read(pumpRunning)) [L717] COND TRUE \read(systemActive) [L739] int tmp ; [L742] COND TRUE ! pumpRunning [L854] int retValue_acc ; [L855] int tmp ; [L856] int tmp___0 ; [L275] int retValue_acc ; [L278] COND TRUE waterLevel < 2 [L279] retValue_acc = 1 [L280] return (retValue_acc); [L860] tmp = isHighWaterSensorDry() [L862] COND TRUE \read(tmp) [L863] tmp___0 = 0 [L867] retValue_acc = tmp___0 [L868] return (retValue_acc); [L744] tmp = isHighWaterLevel() [L746] COND FALSE !(\read(tmp)) [L159] int tmp ; [L160] int tmp___0 ; [L161] int tmp___1 ; [L234] int retValue_acc ; [L237] retValue_acc = methaneLevelCritical [L238] return (retValue_acc); [L165] tmp = isMethaneLevelCritical() [L167] COND FALSE !(\read(tmp)) [L266] int retValue_acc ; [L269] retValue_acc = waterLevel [L270] return (retValue_acc); [L171] tmp___0 = getWaterLevel() [L173] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:36:38,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611e04c4-3c2d-4d34-8507-b26c15ec9dd1/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...