./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product47.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_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/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_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/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_20f76843-1d79-4cfd-8a91-59fbe0470e6c/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 637e567dc685efcee308b97525909830094648d3754bb07704f538b9a7ab34e7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:31:47,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:31:47,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:31:47,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:31:47,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:31:47,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:31:47,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:31:47,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:31:47,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:31:47,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:31:47,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:31:47,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:31:47,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:31:47,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:31:47,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:31:47,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:31:47,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:31:47,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:31:47,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:31:47,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:31:47,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:31:47,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:31:47,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:31:47,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:31:47,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:31:47,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:31:47,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:31:47,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:31:47,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:31:47,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:31:47,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:31:47,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:31:47,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:31:47,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:31:47,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:31:47,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:31:47,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:31:47,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:31:47,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:31:47,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:31:47,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:31:47,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:31:47,523 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:31:47,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:31:47,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:31:47,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:31:47,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:31:47,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:31:47,527 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:31:47,527 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:31:47,528 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:31:47,528 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:31:47,528 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:31:47,529 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:31:47,529 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:31:47,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:31:47,530 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:31:47,530 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:31:47,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:31:47,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:31:47,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:31:47,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:31:47,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:31:47,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:31:47,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:31:47,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:31:47,534 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:31:47,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:31:47,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:31:47,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:31:47,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:31:47,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:31:47,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:31:47,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:31:47,538 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:31:47,538 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_20f76843-1d79-4cfd-8a91-59fbe0470e6c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 637e567dc685efcee308b97525909830094648d3754bb07704f538b9a7ab34e7 [2021-10-21 19:31:47,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:31:47,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:31:47,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:31:47,855 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:31:47,856 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:31:47,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c [2021-10-21 19:31:47,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/data/93d30d9c4/cfc96b403ab444f192b58e2cd7733351/FLAG4660419f1 [2021-10-21 19:31:48,469 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:31:48,470 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c [2021-10-21 19:31:48,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/data/93d30d9c4/cfc96b403ab444f192b58e2cd7733351/FLAG4660419f1 [2021-10-21 19:31:48,771 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/data/93d30d9c4/cfc96b403ab444f192b58e2cd7733351 [2021-10-21 19:31:48,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:31:48,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:31:48,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:31:48,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:31:48,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:31:48,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4259da29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48, skipping insertion in model container [2021-10-21 19:31:48,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:31:48,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:31:49,061 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_20f76843-1d79-4cfd-8a91-59fbe0470e6c/sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c[1605,1618] [2021-10-21 19:31:49,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:31:49,295 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:31:49,320 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_20f76843-1d79-4cfd-8a91-59fbe0470e6c/sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c[1605,1618] [2021-10-21 19:31:49,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:31:49,428 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:31:49,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:49 WrapperNode [2021-10-21 19:31:49,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:31:49,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:31:49,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:31:49,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:31:49,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:49" (1/1) ... [2021-10-21 19:31:49,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:49" (1/1) ... [2021-10-21 19:31:49,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:31:49,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:31:49,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:31:49,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:31:49,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:49" (1/1) ... [2021-10-21 19:31:49,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:49" (1/1) ... [2021-10-21 19:31:49,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:49" (1/1) ... [2021-10-21 19:31:49,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:49" (1/1) ... [2021-10-21 19:31:49,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:49" (1/1) ... [2021-10-21 19:31:49,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:49" (1/1) ... [2021-10-21 19:31:49,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:49" (1/1) ... [2021-10-21 19:31:49,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:31:49,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:31:49,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:31:49,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:31:49,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:49" (1/1) ... [2021-10-21 19:31:49,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:31:49,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:31:49,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:31:49,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:31:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:31:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:31:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:31:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:31:50,861 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:31:50,862 INFO L299 CfgBuilder]: Removed 202 assume(true) statements. [2021-10-21 19:31:50,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:31:50 BoogieIcfgContainer [2021-10-21 19:31:50,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:31:50,865 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:31:50,866 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:31:50,869 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:31:50,870 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:31:50,871 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:31:48" (1/3) ... [2021-10-21 19:31:50,873 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59391252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:31:50, skipping insertion in model container [2021-10-21 19:31:50,873 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:31:50,873 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:49" (2/3) ... [2021-10-21 19:31:50,874 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59391252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:31:50, skipping insertion in model container [2021-10-21 19:31:50,875 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:31:50,875 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:31:50" (3/3) ... [2021-10-21 19:31:50,876 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2021-10-21 19:31:50,923 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:31:50,923 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:31:50,924 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:31:50,924 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:31:50,924 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:31:50,924 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:31:50,924 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:31:50,924 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:31:50,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 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 19:31:50,967 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-10-21 19:31:50,967 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:31:50,967 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:31:50,974 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:31:50,974 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:50,975 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:31:50,975 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 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 19:31:50,985 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-10-21 19:31:50,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:31:50,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:31:50,986 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:31:50,986 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:50,991 INFO L791 eck$LassoCheckResult]: Stem: 118#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(13);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string59.base, #t~string59.offset, 1);call write~init~int(80, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(117, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(109, #t~string59.base, 3 + #t~string59.offset, 1);call write~init~int(112, #t~string59.base, 4 + #t~string59.offset, 1);call write~init~int(58, #t~string59.base, 5 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 6 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string65.base, #t~string65.offset, 1);call write~init~int(32, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string67.base, #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 1 + #t~string67.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 37#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; 97#L185true havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 51#L193true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 91#L149true assume 0 != main_~tmp~0; 45#L122true havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 11#L960-1true [2021-10-21 19:31:50,992 INFO L793 eck$LassoCheckResult]: Loop: 11#L960-1true assume !false; 88#L576true assume test_~splverifierCounter~0 < 4; 61#L577true test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 72#L585true assume !(0 != test_~tmp~4); 43#L585-1true test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 134#L595true assume !(0 != test_~tmp___0~0); 28#L595-1true test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 56#L605true assume 0 != test_~tmp___2~0; 93#L611-1true assume !(0 != ~pumpRunning~0); 126#L647true assume !(0 != ~systemActive~0); 112#L654true havoc __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_#t~ret81, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 114#L894-3true __utac_acc__Specification3_spec__1_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret79;havoc __utac_acc__Specification3_spec__1_#t~ret79; 132#L954true assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 11#L960-1true [2021-10-21 19:31:50,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:50,997 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-21 19:31:51,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:51,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734991600] [2021-10-21 19:31:51,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:51,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:51,303 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:31:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:51,473 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:31:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:51,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1670724674, now seen corresponding path program 1 times [2021-10-21 19:31:51,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:51,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325426601] [2021-10-21 19:31:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:51,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:51,485 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:31:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:51,496 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:31:51,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:51,498 INFO L82 PathProgramCache]: Analyzing trace with hash 43554264, now seen corresponding path program 1 times [2021-10-21 19:31:51,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:51,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841211605] [2021-10-21 19:31:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:51,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:51,732 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 19:31:51,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:51,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841211605] [2021-10-21 19:31:51,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841211605] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:51,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:51,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:31:51,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163321179] [2021-10-21 19:31:51,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:51,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:31:51,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:31:51,867 INFO L87 Difference]: Start difference. First operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 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 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 19:31:52,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:52,129 INFO L93 Difference]: Finished difference Result 318 states and 453 transitions. [2021-10-21 19:31:52,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:31:52,132 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 318 states and 453 transitions. [2021-10-21 19:31:52,142 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 205 [2021-10-21 19:31:52,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 318 states to 297 states and 432 transitions. [2021-10-21 19:31:52,153 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 297 [2021-10-21 19:31:52,154 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 297 [2021-10-21 19:31:52,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 297 states and 432 transitions. [2021-10-21 19:31:52,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:31:52,158 INFO L681 BuchiCegarLoop]: Abstraction has 297 states and 432 transitions. [2021-10-21 19:31:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states and 432 transitions. [2021-10-21 19:31:52,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 174. [2021-10-21 19:31:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 174 states have (on average 1.4482758620689655) internal successors, (252), 173 states have internal predecessors, (252), 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 19:31:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 252 transitions. [2021-10-21 19:31:52,203 INFO L704 BuchiCegarLoop]: Abstraction has 174 states and 252 transitions. [2021-10-21 19:31:52,203 INFO L587 BuchiCegarLoop]: Abstraction has 174 states and 252 transitions. [2021-10-21 19:31:52,203 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:31:52,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 174 states and 252 transitions. [2021-10-21 19:31:52,206 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 120 [2021-10-21 19:31:52,206 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:31:52,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:31:52,207 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:31:52,208 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:52,208 INFO L791 eck$LassoCheckResult]: Stem: 596#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(13);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string59.base, #t~string59.offset, 1);call write~init~int(80, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(117, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(109, #t~string59.base, 3 + #t~string59.offset, 1);call write~init~int(112, #t~string59.base, 4 + #t~string59.offset, 1);call write~init~int(58, #t~string59.base, 5 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 6 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string65.base, #t~string65.offset, 1);call write~init~int(32, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string67.base, #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 1 + #t~string67.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 527#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; 528#L185 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 550#L193 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 551#L149 assume 0 != main_~tmp~0; 542#L122 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 475#L960-1 [2021-10-21 19:31:52,208 INFO L793 eck$LassoCheckResult]: Loop: 475#L960-1 assume !false; 486#L576 assume test_~splverifierCounter~0 < 4; 559#L577 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 560#L585 assume !(0 != test_~tmp~4); 538#L585-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 539#L595 assume !(0 != test_~tmp___0~0); 516#L595-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 517#L605 assume 0 != test_~tmp___2~0; 535#L611-1 assume !(0 != ~pumpRunning~0); 581#L647 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret49, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 593#L705 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret48, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 573#L679-1 assume !(0 == ~pumpRunning~0); 545#L654 havoc __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_#t~ret81, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 594#L894-3 __utac_acc__Specification3_spec__1_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret79;havoc __utac_acc__Specification3_spec__1_#t~ret79; 595#L954 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 475#L960-1 [2021-10-21 19:31:52,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:52,209 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-21 19:31:52,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:52,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625371158] [2021-10-21 19:31:52,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:52,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:52,273 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:31:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:52,376 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:31:52,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:52,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1966055744, now seen corresponding path program 1 times [2021-10-21 19:31:52,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:52,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657484617] [2021-10-21 19:31:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:52,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:52,415 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 19:31:52,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:52,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657484617] [2021-10-21 19:31:52,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657484617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:52,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:52,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:52,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128499602] [2021-10-21 19:31:52,422 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:31:52,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:52,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:52,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:52,426 INFO L87 Difference]: Start difference. First operand 174 states and 252 transitions. cyclomatic complexity: 81 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 19:31:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:52,530 INFO L93 Difference]: Finished difference Result 219 states and 301 transitions. [2021-10-21 19:31:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:52,531 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 219 states and 301 transitions. [2021-10-21 19:31:52,539 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 154 [2021-10-21 19:31:52,542 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 219 states to 219 states and 301 transitions. [2021-10-21 19:31:52,543 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 219 [2021-10-21 19:31:52,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 219 [2021-10-21 19:31:52,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 301 transitions. [2021-10-21 19:31:52,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:31:52,553 INFO L681 BuchiCegarLoop]: Abstraction has 219 states and 301 transitions. [2021-10-21 19:31:52,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states and 301 transitions. [2021-10-21 19:31:52,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-10-21 19:31:52,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 219 states have (on average 1.3744292237442923) internal successors, (301), 218 states have internal predecessors, (301), 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 19:31:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 301 transitions. [2021-10-21 19:31:52,574 INFO L704 BuchiCegarLoop]: Abstraction has 219 states and 301 transitions. [2021-10-21 19:31:52,575 INFO L587 BuchiCegarLoop]: Abstraction has 219 states and 301 transitions. [2021-10-21 19:31:52,575 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:31:52,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 219 states and 301 transitions. [2021-10-21 19:31:52,578 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 154 [2021-10-21 19:31:52,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:31:52,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:31:52,581 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:31:52,581 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] [2021-10-21 19:31:52,582 INFO L791 eck$LassoCheckResult]: Stem: 1010#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(13);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string59.base, #t~string59.offset, 1);call write~init~int(80, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(117, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(109, #t~string59.base, 3 + #t~string59.offset, 1);call write~init~int(112, #t~string59.base, 4 + #t~string59.offset, 1);call write~init~int(58, #t~string59.base, 5 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 6 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string65.base, #t~string65.offset, 1);call write~init~int(32, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string67.base, #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 1 + #t~string67.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 929#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; 930#L185 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 954#L193 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 955#L149 assume 0 != main_~tmp~0; 945#L122 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 946#L960-1 [2021-10-21 19:31:52,582 INFO L793 eck$LassoCheckResult]: Loop: 946#L960-1 assume !false; 1077#L576 assume test_~splverifierCounter~0 < 4; 1076#L577 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 1075#L585 assume !(0 != test_~tmp~4); 1070#L585-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 1063#L595 assume !(0 != test_~tmp___0~0); 1061#L595-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 1059#L605 assume 0 != test_~tmp___2~0; 988#L611-1 assume !(0 != ~pumpRunning~0); 989#L647 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret49, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1005#L705 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret48, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 978#L679-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret68, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 979#L934-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~11 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 895#L939-1 isHighWaterLevel_#t~ret68 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret68;havoc isHighWaterLevel_#t~ret68; 896#L824-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 897#L824-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 898#L830-1 processEnvironment__wrappee__methaneQuery_#t~ret48 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret48;havoc processEnvironment__wrappee__methaneQuery_#t~ret48; 948#L683-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 949#L654 havoc __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_#t~ret81, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 1006#L894-3 __utac_acc__Specification3_spec__1_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret79;havoc __utac_acc__Specification3_spec__1_#t~ret79; 1007#L954 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 946#L960-1 [2021-10-21 19:31:52,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:52,583 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-21 19:31:52,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:52,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326846547] [2021-10-21 19:31:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:52,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:52,661 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:31:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:52,769 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:31:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:52,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1687938738, now seen corresponding path program 1 times [2021-10-21 19:31:52,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:52,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824854702] [2021-10-21 19:31:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:52,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:52,825 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 19:31:52,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:52,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824854702] [2021-10-21 19:31:52,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824854702] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:52,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:52,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:31:52,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142836019] [2021-10-21 19:31:52,827 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:31:52,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:52,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:31:52,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:31:52,828 INFO L87 Difference]: Start difference. First operand 219 states and 301 transitions. cyclomatic complexity: 85 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 19:31:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:52,919 INFO L93 Difference]: Finished difference Result 621 states and 843 transitions. [2021-10-21 19:31:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:31:52,920 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 621 states and 843 transitions. [2021-10-21 19:31:52,929 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 446 [2021-10-21 19:31:52,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 621 states to 621 states and 843 transitions. [2021-10-21 19:31:52,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 621 [2021-10-21 19:31:52,937 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 621 [2021-10-21 19:31:52,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 621 states and 843 transitions. [2021-10-21 19:31:52,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:31:52,938 INFO L681 BuchiCegarLoop]: Abstraction has 621 states and 843 transitions. [2021-10-21 19:31:52,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states and 843 transitions. [2021-10-21 19:31:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 231. [2021-10-21 19:31:52,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 231 states have (on average 1.354978354978355) internal successors, (313), 230 states have internal predecessors, (313), 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 19:31:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 313 transitions. [2021-10-21 19:31:52,964 INFO L704 BuchiCegarLoop]: Abstraction has 231 states and 313 transitions. [2021-10-21 19:31:52,965 INFO L587 BuchiCegarLoop]: Abstraction has 231 states and 313 transitions. [2021-10-21 19:31:52,965 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:31:52,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 231 states and 313 transitions. [2021-10-21 19:31:52,966 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 162 [2021-10-21 19:31:52,967 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:31:52,967 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:31:52,968 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:31:52,968 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] [2021-10-21 19:31:52,968 INFO L791 eck$LassoCheckResult]: Stem: 1875#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(13);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string59.base, #t~string59.offset, 1);call write~init~int(80, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(117, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(109, #t~string59.base, 3 + #t~string59.offset, 1);call write~init~int(112, #t~string59.base, 4 + #t~string59.offset, 1);call write~init~int(58, #t~string59.base, 5 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 6 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string65.base, #t~string65.offset, 1);call write~init~int(32, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string67.base, #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 1 + #t~string67.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1781#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; 1782#L185 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 1807#L193 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1808#L149 assume 0 != main_~tmp~0; 1797#L122 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1798#L960-1 [2021-10-21 19:31:52,968 INFO L793 eck$LassoCheckResult]: Loop: 1798#L960-1 assume !false; 1926#L576 assume test_~splverifierCounter~0 < 4; 1817#L577 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 1818#L585 assume !(0 != test_~tmp~4); 1793#L585-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 1794#L595 assume !(0 != test_~tmp___0~0); 1766#L595-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 1767#L605 assume 0 != test_~tmp___2~0; 1790#L611-1 assume !(0 != ~pumpRunning~0); 1846#L647 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret49, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1867#L705 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret48, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 1834#L679-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret68, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 1835#L934-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 1746#L939-1 isHighWaterLevel_#t~ret68 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret68;havoc isHighWaterLevel_#t~ret68; 1747#L824-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 1748#L824-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 1749#L830-1 processEnvironment__wrappee__methaneQuery_#t~ret48 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret48;havoc processEnvironment__wrappee__methaneQuery_#t~ret48; 1800#L683-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 1801#L654 havoc __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_#t~ret81, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 1930#L894-3 __utac_acc__Specification3_spec__1_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret79;havoc __utac_acc__Specification3_spec__1_#t~ret79; 1929#L954 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 1798#L960-1 [2021-10-21 19:31:52,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:52,969 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-21 19:31:52,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:52,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603271747] [2021-10-21 19:31:52,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:52,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:52,998 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:31:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:53,045 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:31:53,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:53,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1926970188, now seen corresponding path program 1 times [2021-10-21 19:31:53,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:53,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403456141] [2021-10-21 19:31:53,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:53,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:53,054 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:31:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:53,062 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:31:53,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:53,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1911925914, now seen corresponding path program 1 times [2021-10-21 19:31:53,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:53,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338123926] [2021-10-21 19:31:53,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:53,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:53,142 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 19:31:53,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:53,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338123926] [2021-10-21 19:31:53,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338123926] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:53,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:53,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:53,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644123914] [2021-10-21 19:31:53,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:53,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:31:53,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:31:53,439 INFO L87 Difference]: Start difference. First operand 231 states and 313 transitions. cyclomatic complexity: 85 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 19:31:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:53,647 INFO L93 Difference]: Finished difference Result 770 states and 1043 transitions. [2021-10-21 19:31:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:31:53,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 770 states and 1043 transitions. [2021-10-21 19:31:53,655 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 566 [2021-10-21 19:31:53,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 770 states to 770 states and 1043 transitions. [2021-10-21 19:31:53,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 770 [2021-10-21 19:31:53,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 770 [2021-10-21 19:31:53,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 770 states and 1043 transitions. [2021-10-21 19:31:53,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:31:53,668 INFO L681 BuchiCegarLoop]: Abstraction has 770 states and 1043 transitions. [2021-10-21 19:31:53,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states and 1043 transitions. [2021-10-21 19:31:53,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 456. [2021-10-21 19:31:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 456 states have (on average 1.3333333333333333) internal successors, (608), 455 states have internal predecessors, (608), 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 19:31:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 608 transitions. [2021-10-21 19:31:53,685 INFO L704 BuchiCegarLoop]: Abstraction has 456 states and 608 transitions. [2021-10-21 19:31:53,686 INFO L587 BuchiCegarLoop]: Abstraction has 456 states and 608 transitions. [2021-10-21 19:31:53,686 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:31:53,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 456 states and 608 transitions. [2021-10-21 19:31:53,689 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 324 [2021-10-21 19:31:53,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:31:53,689 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:31:53,691 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:31:53,691 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, 1] [2021-10-21 19:31:53,691 INFO L791 eck$LassoCheckResult]: Stem: 2908#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(21);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(13);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string59.base, #t~string59.offset, 1);call write~init~int(80, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(117, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(109, #t~string59.base, 3 + #t~string59.offset, 1);call write~init~int(112, #t~string59.base, 4 + #t~string59.offset, 1);call write~init~int(58, #t~string59.base, 5 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 6 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string65.base, #t~string65.offset, 1);call write~init~int(32, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string67.base, #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 1 + #t~string67.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 2801#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; 2802#L185 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 2832#L193 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 2833#L149 assume 0 != main_~tmp~0; 2818#L122 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2819#L960-1 [2021-10-21 19:31:53,692 INFO L793 eck$LassoCheckResult]: Loop: 2819#L960-1 assume !false; 3084#L576 assume test_~splverifierCounter~0 < 4; 2847#L577 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 2848#L585 assume !(0 != test_~tmp~4); 2824#L585-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 3178#L595 assume !(0 != test_~tmp___0~0); 3177#L595-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 3174#L605 assume 0 != test_~tmp___2~0; 2811#L611-1 assume !(0 != ~pumpRunning~0); 2912#L647 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret49, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 2902#L705 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret48, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 2870#L679-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret68, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 2871#L934-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 2873#L939-1 isHighWaterLevel_#t~ret68 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret68;havoc isHighWaterLevel_#t~ret68; 3085#L824-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 2768#L824-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 2769#L830-1 processEnvironment__wrappee__methaneQuery_#t~ret48 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret48;havoc processEnvironment__wrappee__methaneQuery_#t~ret48; 2914#L683-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 2975#L654 havoc __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_#t~ret81, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 3150#L894-3 __utac_acc__Specification3_spec__1_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret79;havoc __utac_acc__Specification3_spec__1_#t~ret79; 2916#L954 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~9);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 2917#L926 __utac_acc__Specification3_spec__1_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret80;havoc __utac_acc__Specification3_spec__1_#t~ret80; 3089#L960 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 2819#L960-1 [2021-10-21 19:31:53,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:53,693 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 5 times [2021-10-21 19:31:53,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:53,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972997194] [2021-10-21 19:31:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:53,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:53,741 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:31:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:53,807 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:31:53,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:53,808 INFO L82 PathProgramCache]: Analyzing trace with hash 687454750, now seen corresponding path program 1 times [2021-10-21 19:31:53,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:53,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123541871] [2021-10-21 19:31:53,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:53,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:53,823 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:31:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:53,847 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:31:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:53,848 INFO L82 PathProgramCache]: Analyzing trace with hash 885207992, now seen corresponding path program 1 times [2021-10-21 19:31:53,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:53,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522528779] [2021-10-21 19:31:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:53,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:53,891 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:31:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:31:53,952 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:32:53,117 WARN L207 SmtUtils]: Spent 58.84 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-21 19:33:55,461 WARN L207 SmtUtils]: Spent 29.41 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-21 19:33:55,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:33:55 BoogieIcfgContainer [2021-10-21 19:33:55,580 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:33:55,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:33:55,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:33:55,581 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:33:55,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:31:50" (3/4) ... [2021-10-21 19:33:55,584 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:33:55,635 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:33:55,635 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:33:55,637 INFO L168 Benchmark]: Toolchain (without parser) took 126861.23 ms. Allocated memory was 100.7 MB in the beginning and 167.8 MB in the end (delta: 67.1 MB). Free memory was 58.9 MB in the beginning and 84.5 MB in the end (delta: -25.6 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:55,637 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 76.3 MB in the end (delta: 51.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:33:55,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 650.54 ms. Allocated memory is still 100.7 MB. Free memory was 58.7 MB in the beginning and 67.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:55,638 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.67 ms. Allocated memory is still 100.7 MB. Free memory was 67.7 MB in the beginning and 63.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:55,639 INFO L168 Benchmark]: Boogie Preprocessor took 74.00 ms. Allocated memory is still 100.7 MB. Free memory was 63.8 MB in the beginning and 60.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:55,640 INFO L168 Benchmark]: RCFGBuilder took 1271.69 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 60.8 MB in the beginning and 80.6 MB in the end (delta: -19.8 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:55,640 INFO L168 Benchmark]: BuchiAutomizer took 124714.74 ms. Allocated memory was 121.6 MB in the beginning and 167.8 MB in the end (delta: 46.1 MB). Free memory was 80.6 MB in the beginning and 87.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 94.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:55,641 INFO L168 Benchmark]: Witness Printer took 54.92 ms. Allocated memory is still 167.8 MB. Free memory was 87.5 MB in the beginning and 84.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:55,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 76.3 MB in the end (delta: 51.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 650.54 ms. Allocated memory is still 100.7 MB. Free memory was 58.7 MB in the beginning and 67.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.67 ms. Allocated memory is still 100.7 MB. Free memory was 67.7 MB in the beginning and 63.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.00 ms. Allocated memory is still 100.7 MB. Free memory was 63.8 MB in the beginning and 60.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1271.69 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 60.8 MB in the beginning and 80.6 MB in the end (delta: -19.8 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 124714.74 ms. Allocated memory was 121.6 MB in the beginning and 167.8 MB in the end (delta: 46.1 MB). Free memory was 80.6 MB in the beginning and 87.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 94.8 MB. Max. memory is 16.1 GB. * Witness Printer took 54.92 ms. Allocated memory is still 167.8 MB. Free memory was 87.5 MB in the beginning and 84.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 456 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 124.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 123.6s. Construction of modules took 0.4s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 93.7ms AutomataMinimizationTime, 4 MinimizatonAttempts, 827 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 456 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1000 SDtfs, 2120 SDslu, 2074 SDs, 0 SdLazy, 261 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 401.3ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 575]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=4375} State at position 1 is {NULL=0, NULL=4382, NULL=0, retValue_acc=1, NULL=4375, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55d42fad=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4860a508=69, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7cace563=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@bf3d9c5=0, methaneLevelCritical=0, tmp=0, retValue_acc=0, NULL=0, tmp___1=0, NULL=4393, NULL=0, NULL=4403, NULL=4378, cleanupTimeShifts=4, tmp=0, NULL=0, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c5e4b87=0, tmp___0=0, \result=1, head=0, pumpRunning=0, tmp=1, NULL=4390, NULL=4385, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@dec1427=0, \result=1, NULL=0, NULL=4387, NULL=0, NULL=0, NULL=0, tmp=1, NULL=4379, NULL=4389, NULL=4384, head=0, NULL=0, tmp=0, NULL=4399, NULL=4401, NULL=0, NULL=0, NULL=0, tmp=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2970893f=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67bd5aa=0, NULL=0, NULL=4392, NULL=4376, NULL=4391, NULL=4397, tmp___0=0, NULL=0, NULL=4394, NULL=4381, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d7f3c4b=0, NULL=0, NULL=4398, NULL=4377, NULL=4386, tmp___0=1, NULL=0, NULL=0, systemActive=1, \result=1, NULL=0, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=4402, \result=0, NULL=4380, NULL=4395, retValue_acc=1, tmp___2=69, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=4400, NULL=4383, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27051f0a=0, NULL=4396, NULL=4388, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71d8a29b=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L59] int cleanupTimeShifts = 4; [L367] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L639] int pumpRunning = 0; [L640] int systemActive = 1; [L851] int waterLevel = 1; [L852] int methaneLevelCritical = 0; [L140] int retValue_acc ; [L141] int tmp ; [L189] int retValue_acc ; [L192] retValue_acc = 1 [L193] return (retValue_acc); [L147] tmp = valid_product() [L149] COND TRUE \read(tmp) [L566] int splverifierCounter ; [L567] int tmp ; [L568] int tmp___0 ; [L569] int tmp___1 ; [L570] int tmp___2 ; [L573] splverifierCounter = 0 Loop: [L575] COND TRUE 1 [L577] COND TRUE splverifierCounter < 4 [L583] tmp = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp)) [L593] tmp___0 = __VERIFIER_nondet_int() [L595] COND FALSE !(\read(tmp___0)) [L603] tmp___2 = __VERIFIER_nondet_int() [L605] COND TRUE \read(tmp___2) [L647] COND FALSE !(\read(pumpRunning)) [L654] COND TRUE \read(systemActive) [L702] int tmp ; [L705] COND FALSE !(\read(pumpRunning)) [L676] int tmp ; [L679] COND TRUE ! pumpRunning [L816] int retValue_acc ; [L817] int tmp ; [L818] int tmp___0 ; [L931] int retValue_acc ; [L934] COND TRUE waterLevel < 2 [L935] retValue_acc = 1 [L936] return (retValue_acc); [L822] tmp = isHighWaterSensorDry() [L824] COND TRUE \read(tmp) [L825] tmp___0 = 0 [L829] retValue_acc = tmp___0 [L830] return (retValue_acc); [L681] tmp = isHighWaterLevel() [L683] COND FALSE !(\read(tmp)) [L946] int tmp ; [L947] int tmp___0 ; [L948] int tmp___1 ; [L890] int retValue_acc ; [L893] retValue_acc = methaneLevelCritical [L894] return (retValue_acc); [L952] tmp = isMethaneLevelCritical() [L954] COND FALSE !(\read(tmp)) [L922] int retValue_acc ; [L925] retValue_acc = waterLevel [L926] return (retValue_acc); [L958] tmp___0 = getWaterLevel() [L960] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:33:55,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f76843-1d79-4cfd-8a91-59fbe0470e6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...