./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product39.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_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/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_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product39.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/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_d6d77d9a-47a6-4749-bd5b-db23ac434d64/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 df3faf2d1bbcaed92e1c2eddcb5ae1d2459730e99808e363d537a0bc5d54e347 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 19:54:04,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:54:04,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:54:04,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:54:04,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:54:04,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:54:04,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:54:04,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:54:04,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:54:04,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:54:04,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:54:04,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:54:04,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:54:04,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:54:04,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:54:04,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:54:04,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:54:04,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:54:04,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:54:04,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:54:04,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:54:04,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:54:04,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:54:04,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:54:04,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:54:04,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:54:04,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:54:04,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:54:04,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:54:04,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:54:04,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:54:04,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:54:04,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:54:04,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:54:04,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:54:04,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:54:04,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:54:04,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:54:04,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:54:04,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:54:04,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:54:04,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:54:04,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:54:04,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:54:04,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:54:04,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:54:04,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:54:04,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:54:04,630 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:54:04,630 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:54:04,630 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:54:04,631 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:54:04,632 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:54:04,632 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:54:04,632 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:54:04,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:54:04,633 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:54:04,633 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:54:04,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:54:04,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:54:04,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:54:04,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:54:04,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:54:04,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:54:04,634 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:54:04,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:54:04,635 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:54:04,635 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:54:04,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:54:04,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:54:04,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:54:04,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:54:04,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:54:04,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:54:04,637 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:54:04,637 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_d6d77d9a-47a6-4749-bd5b-db23ac434d64/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df3faf2d1bbcaed92e1c2eddcb5ae1d2459730e99808e363d537a0bc5d54e347 [2021-10-21 19:54:04,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:54:04,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:54:04,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:54:04,946 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:54:04,947 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:54:04,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec5_product39.cil.c [2021-10-21 19:54:05,009 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/data/16ab7f4d9/9d40f46eecdc4af988d17891a89f93e2/FLAG1a1130c63 [2021-10-21 19:54:05,527 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:54:05,530 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/sv-benchmarks/c/product-lines/minepump_spec5_product39.cil.c [2021-10-21 19:54:05,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/data/16ab7f4d9/9d40f46eecdc4af988d17891a89f93e2/FLAG1a1130c63 [2021-10-21 19:54:05,864 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/data/16ab7f4d9/9d40f46eecdc4af988d17891a89f93e2 [2021-10-21 19:54:05,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:54:05,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:54:05,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:54:05,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:54:05,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:54:05,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:54:05" (1/1) ... [2021-10-21 19:54:05,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60337400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:05, skipping insertion in model container [2021-10-21 19:54:05,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:54:05" (1/1) ... [2021-10-21 19:54:05,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:54:05,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:54:06,098 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_d6d77d9a-47a6-4749-bd5b-db23ac434d64/sv-benchmarks/c/product-lines/minepump_spec5_product39.cil.c[1605,1618] [2021-10-21 19:54:06,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:54:06,345 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:54:06,366 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_d6d77d9a-47a6-4749-bd5b-db23ac434d64/sv-benchmarks/c/product-lines/minepump_spec5_product39.cil.c[1605,1618] [2021-10-21 19:54:06,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:54:06,491 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:54:06,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:06 WrapperNode [2021-10-21 19:54:06,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:54:06,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:54:06,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:54:06,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:54:06,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:06" (1/1) ... [2021-10-21 19:54:06,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:06" (1/1) ... [2021-10-21 19:54:06,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:54:06,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:54:06,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:54:06,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:54:06,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:06" (1/1) ... [2021-10-21 19:54:06,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:06" (1/1) ... [2021-10-21 19:54:06,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:06" (1/1) ... [2021-10-21 19:54:06,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:06" (1/1) ... [2021-10-21 19:54:06,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:06" (1/1) ... [2021-10-21 19:54:06,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:06" (1/1) ... [2021-10-21 19:54:06,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:06" (1/1) ... [2021-10-21 19:54:06,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:54:06,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:54:06,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:54:06,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:54:06,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:06" (1/1) ... [2021-10-21 19:54:06,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:54:06,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:06,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:54:06,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:54:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:54:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:54:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:54:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:54:07,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:54:07,558 INFO L299 CfgBuilder]: Removed 174 assume(true) statements. [2021-10-21 19:54:07,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:54:07 BoogieIcfgContainer [2021-10-21 19:54:07,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:54:07,562 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:54:07,562 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:54:07,565 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:54:07,572 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:54:07,573 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:54:05" (1/3) ... [2021-10-21 19:54:07,574 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a39ed25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:54:07, skipping insertion in model container [2021-10-21 19:54:07,574 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:54:07,574 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:06" (2/3) ... [2021-10-21 19:54:07,575 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a39ed25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:54:07, skipping insertion in model container [2021-10-21 19:54:07,575 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:54:07,575 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:54:07" (3/3) ... [2021-10-21 19:54:07,576 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product39.cil.c [2021-10-21 19:54:07,635 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:54:07,635 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:54:07,635 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:54:07,635 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:54:07,635 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:54:07,636 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:54:07,636 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:54:07,636 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:54:07,660 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 119 states, 118 states have (on average 1.5254237288135593) internal successors, (180), 118 states have internal predecessors, (180), 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 19:54:07,691 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-10-21 19:54:07,691 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:54:07,691 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:54:07,698 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:07,698 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:07,698 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:54:07,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 119 states, 118 states have (on average 1.5254237288135593) internal successors, (180), 118 states have internal predecessors, (180), 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 19:54:07,707 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-10-21 19:54:07,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:54:07,708 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:54:07,709 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:07,709 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:07,714 INFO L791 eck$LassoCheckResult]: Stem: 110#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 31#L-1true havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 106#L84true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 99#L92true main_#t~ret28 := valid_product_#res;main_~tmp~3 := main_#t~ret28;havoc main_#t~ret28; 37#L392true assume 0 != main_~tmp~3; 98#L366true ~switchedOnBeforeTS~0 := 0; 39#L480true havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 91#L501-1true [2021-10-21 19:54:07,714 INFO L793 eck$LassoCheckResult]: Loop: 91#L501-1true assume !false; 30#L417true assume test_~splverifierCounter~0 < 4; 10#L418true test_~tmp~4 := test_#t~nondet29;havoc test_#t~nondet29; 102#L426true assume !(0 != test_~tmp~4); 72#L426-1true test_~tmp___0~1 := test_#t~nondet30;havoc test_#t~nondet30; 28#L436true assume !(0 != test_~tmp___0~1); 18#L436-1true test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 95#L446true assume 0 != test_~tmp___2~0; 25#L452-1true havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 67#L230true __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 15#L490true assume !(0 != ~pumpRunning~0); 112#L119true assume !(0 != ~systemActive~0); 63#L126true havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;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; 64#L964true __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 40#L501true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~5); 91#L501-1true [2021-10-21 19:54:07,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:07,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-21 19:54:07,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:07,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287761983] [2021-10-21 19:54:07,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:07,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:08,043 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:54:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:08,227 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:54:08,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:08,230 INFO L82 PathProgramCache]: Analyzing trace with hash -240260331, now seen corresponding path program 1 times [2021-10-21 19:54:08,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:08,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298202783] [2021-10-21 19:54:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:08,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:08,240 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:54:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:08,250 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:54:08,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:08,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1693764879, now seen corresponding path program 1 times [2021-10-21 19:54:08,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:08,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105249459] [2021-10-21 19:54:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:08,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:08,463 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 19:54:08,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:08,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105249459] [2021-10-21 19:54:08,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105249459] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:08,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:08,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:54:08,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052321129] [2021-10-21 19:54:08,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:08,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:54:08,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:54:08,656 INFO L87 Difference]: Start difference. First operand has 119 states, 118 states have (on average 1.5254237288135593) internal successors, (180), 118 states have internal predecessors, (180), 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 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 19:54:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:08,936 INFO L93 Difference]: Finished difference Result 289 states and 412 transitions. [2021-10-21 19:54:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:54:08,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 289 states and 412 transitions. [2021-10-21 19:54:08,950 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 187 [2021-10-21 19:54:08,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 289 states to 268 states and 391 transitions. [2021-10-21 19:54:08,970 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 268 [2021-10-21 19:54:08,972 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 268 [2021-10-21 19:54:08,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 268 states and 391 transitions. [2021-10-21 19:54:08,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:54:08,975 INFO L681 BuchiCegarLoop]: Abstraction has 268 states and 391 transitions. [2021-10-21 19:54:08,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states and 391 transitions. [2021-10-21 19:54:09,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 161. [2021-10-21 19:54:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 161 states have (on average 1.4472049689440993) internal successors, (233), 160 states have internal predecessors, (233), 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 19:54:09,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 233 transitions. [2021-10-21 19:54:09,011 INFO L704 BuchiCegarLoop]: Abstraction has 161 states and 233 transitions. [2021-10-21 19:54:09,012 INFO L587 BuchiCegarLoop]: Abstraction has 161 states and 233 transitions. [2021-10-21 19:54:09,012 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:54:09,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 161 states and 233 transitions. [2021-10-21 19:54:09,015 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 112 [2021-10-21 19:54:09,016 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:54:09,016 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:54:09,017 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:09,017 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:09,017 INFO L791 eck$LassoCheckResult]: Stem: 537#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 478#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 479#L84 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 535#L92 main_#t~ret28 := valid_product_#res;main_~tmp~3 := main_#t~ret28;havoc main_#t~ret28; 489#L392 assume 0 != main_~tmp~3; 490#L366 ~switchedOnBeforeTS~0 := 0; 492#L480 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 471#L501-1 [2021-10-21 19:54:09,018 INFO L793 eck$LassoCheckResult]: Loop: 471#L501-1 assume !false; 476#L417 assume test_~splverifierCounter~0 < 4; 435#L418 test_~tmp~4 := test_#t~nondet29;havoc test_#t~nondet29; 436#L426 assume !(0 != test_~tmp~4); 509#L426-1 test_~tmp___0~1 := test_#t~nondet30;havoc test_#t~nondet30; 473#L436 assume !(0 != test_~tmp___0~1); 453#L436-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 454#L446 assume 0 != test_~tmp___2~0; 467#L452-1 havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 468#L230 __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 445#L490 assume !(0 != ~pumpRunning~0); 447#L119 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 496#L177 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 464#L151-1 assume !(0 == ~pumpRunning~0); 465#L126 havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;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; 517#L964 __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 493#L501 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~5); 471#L501-1 [2021-10-21 19:54:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:09,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-21 19:54:09,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:09,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214626035] [2021-10-21 19:54:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:09,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:09,066 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:54:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:09,128 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:54:09,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:09,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1402231348, now seen corresponding path program 1 times [2021-10-21 19:54:09,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:09,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841849759] [2021-10-21 19:54:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:09,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:09,157 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 19:54:09,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:09,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841849759] [2021-10-21 19:54:09,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841849759] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:09,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:09,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:54:09,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81756695] [2021-10-21 19:54:09,166 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:54:09,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:09,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:54:09,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:54:09,169 INFO L87 Difference]: Start difference. First operand 161 states and 233 transitions. cyclomatic complexity: 75 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 19:54:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:09,305 INFO L93 Difference]: Finished difference Result 208 states and 284 transitions. [2021-10-21 19:54:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:54:09,306 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 208 states and 284 transitions. [2021-10-21 19:54:09,309 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 148 [2021-10-21 19:54:09,311 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 208 states to 208 states and 284 transitions. [2021-10-21 19:54:09,312 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 208 [2021-10-21 19:54:09,312 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2021-10-21 19:54:09,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 284 transitions. [2021-10-21 19:54:09,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:54:09,314 INFO L681 BuchiCegarLoop]: Abstraction has 208 states and 284 transitions. [2021-10-21 19:54:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 284 transitions. [2021-10-21 19:54:09,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-10-21 19:54:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 208 states have (on average 1.3653846153846154) internal successors, (284), 207 states have internal predecessors, (284), 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 19:54:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 284 transitions. [2021-10-21 19:54:09,326 INFO L704 BuchiCegarLoop]: Abstraction has 208 states and 284 transitions. [2021-10-21 19:54:09,326 INFO L587 BuchiCegarLoop]: Abstraction has 208 states and 284 transitions. [2021-10-21 19:54:09,326 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:54:09,327 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 208 states and 284 transitions. [2021-10-21 19:54:09,329 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 148 [2021-10-21 19:54:09,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:54:09,330 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:54:09,355 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:09,355 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 19:54:09,355 INFO L791 eck$LassoCheckResult]: Stem: 922#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 854#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 855#L84 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 920#L92 main_#t~ret28 := valid_product_#res;main_~tmp~3 := main_#t~ret28;havoc main_#t~ret28; 866#L392 assume 0 != main_~tmp~3; 867#L366 ~switchedOnBeforeTS~0 := 0; 869#L480 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 870#L501-1 [2021-10-21 19:54:09,359 INFO L793 eck$LassoCheckResult]: Loop: 870#L501-1 assume !false; 852#L417 assume test_~splverifierCounter~0 < 4; 812#L418 test_~tmp~4 := test_#t~nondet29;havoc test_#t~nondet29; 813#L426 assume !(0 != test_~tmp~4); 888#L426-1 test_~tmp___0~1 := test_#t~nondet30;havoc test_#t~nondet30; 849#L436 assume !(0 != test_~tmp___0~1); 829#L436-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 830#L446 assume 0 != test_~tmp___2~0; 843#L452-1 havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 844#L230 __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 822#L490 assume !(0 != ~pumpRunning~0); 823#L119 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 877#L177 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 841#L151-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 842#L972-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 839#L977-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 840#L279-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 878#L279-5 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 880#L285-1 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 881#L155-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 875#L126 havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;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; 982#L964 __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 977#L501 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~5); 870#L501-1 [2021-10-21 19:54:09,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:09,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-21 19:54:09,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:09,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730730374] [2021-10-21 19:54:09,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:09,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:09,443 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:54:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:09,547 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:54:09,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:09,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2024417080, now seen corresponding path program 1 times [2021-10-21 19:54:09,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:09,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965923089] [2021-10-21 19:54:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:09,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:09,588 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 19:54:09,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:09,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965923089] [2021-10-21 19:54:09,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965923089] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:09,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:09,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:54:09,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193282465] [2021-10-21 19:54:09,589 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:54:09,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:09,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:54:09,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:54:09,590 INFO L87 Difference]: Start difference. First operand 208 states and 284 transitions. cyclomatic complexity: 79 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 19:54:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:09,746 INFO L93 Difference]: Finished difference Result 556 states and 743 transitions. [2021-10-21 19:54:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:54:09,747 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 556 states and 743 transitions. [2021-10-21 19:54:09,754 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 373 [2021-10-21 19:54:09,760 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 556 states to 556 states and 743 transitions. [2021-10-21 19:54:09,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 556 [2021-10-21 19:54:09,761 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 556 [2021-10-21 19:54:09,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 556 states and 743 transitions. [2021-10-21 19:54:09,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:54:09,764 INFO L681 BuchiCegarLoop]: Abstraction has 556 states and 743 transitions. [2021-10-21 19:54:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states and 743 transitions. [2021-10-21 19:54:09,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 409. [2021-10-21 19:54:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 409 states have (on average 1.3276283618581908) internal successors, (543), 408 states have internal predecessors, (543), 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 19:54:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 543 transitions. [2021-10-21 19:54:09,788 INFO L704 BuchiCegarLoop]: Abstraction has 409 states and 543 transitions. [2021-10-21 19:54:09,789 INFO L587 BuchiCegarLoop]: Abstraction has 409 states and 543 transitions. [2021-10-21 19:54:09,789 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:54:09,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 409 states and 543 transitions. [2021-10-21 19:54:09,792 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 296 [2021-10-21 19:54:09,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:54:09,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:54:09,793 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:09,794 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, 1, 1] [2021-10-21 19:54:09,794 INFO L791 eck$LassoCheckResult]: Stem: 1720#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1636#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 1637#L84 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1714#L92 main_#t~ret28 := valid_product_#res;main_~tmp~3 := main_#t~ret28;havoc main_#t~ret28; 1647#L392 assume 0 != main_~tmp~3; 1648#L366 ~switchedOnBeforeTS~0 := 0; 1655#L480 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1627#L501-1 [2021-10-21 19:54:09,794 INFO L793 eck$LassoCheckResult]: Loop: 1627#L501-1 assume !false; 1633#L417 assume test_~splverifierCounter~0 < 4; 1634#L418 test_~tmp~4 := test_#t~nondet29;havoc test_#t~nondet29; 1986#L426 assume !(0 != test_~tmp~4); 1985#L426-1 test_~tmp___0~1 := test_#t~nondet30;havoc test_#t~nondet30; 1972#L436 assume !(0 != test_~tmp___0~1); 1970#L436-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 1712#L446 assume 0 != test_~tmp___2~0; 1682#L452-1 havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 1989#L230 __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 1984#L490 assume !(0 != ~pumpRunning~0); 1884#L119 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1658#L177 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1621#L151-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 1622#L972-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 1715#L977-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 1907#L279-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 1906#L279-5 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 1905#L285-1 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 1664#L155-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1654#L126 havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;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; 1679#L964 __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 1650#L501 assume 2 != __utac_acc__Specification5_spec__3_~tmp~5;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 1651#L230-1 __utac_acc__Specification5_spec__3_#t~ret35 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret35;havoc __utac_acc__Specification5_spec__3_#t~ret35; 1625#L505 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 1627#L501-1 [2021-10-21 19:54:09,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:09,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-21 19:54:09,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:09,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651663522] [2021-10-21 19:54:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:09,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:09,835 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:54:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:09,896 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:54:09,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:09,908 INFO L82 PathProgramCache]: Analyzing trace with hash -155383309, now seen corresponding path program 1 times [2021-10-21 19:54:09,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:09,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432958114] [2021-10-21 19:54:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:09,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:09,921 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:54:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:09,937 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:54:09,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:09,942 INFO L82 PathProgramCache]: Analyzing trace with hash -218809491, now seen corresponding path program 1 times [2021-10-21 19:54:09,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:09,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487016679] [2021-10-21 19:54:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:09,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:09,996 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:54:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:10,041 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:55:12,220 WARN L207 SmtUtils]: Spent 1.03 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-21 19:56:16,338 WARN L207 SmtUtils]: Spent 29.80 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-21 19:56:16,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:56:16 BoogieIcfgContainer [2021-10-21 19:56:16,477 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:56:16,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:56:16,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:56:16,478 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:56:16,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:54:07" (3/4) ... [2021-10-21 19:56:16,481 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:56:16,531 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:56:16,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:56:16,532 INFO L168 Benchmark]: Toolchain (without parser) took 130664.11 ms. Allocated memory was 121.6 MB in the beginning and 230.7 MB in the end (delta: 109.1 MB). Free memory was 92.2 MB in the beginning and 102.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 98.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:16,533 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 121.6 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:56:16,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.20 ms. Allocated memory was 121.6 MB in the beginning and 174.1 MB in the end (delta: 52.4 MB). Free memory was 91.9 MB in the beginning and 140.5 MB in the end (delta: -48.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:16,534 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.74 ms. Allocated memory is still 174.1 MB. Free memory was 140.5 MB in the beginning and 136.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:16,534 INFO L168 Benchmark]: Boogie Preprocessor took 41.52 ms. Allocated memory is still 174.1 MB. Free memory was 136.8 MB in the beginning and 134.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:16,535 INFO L168 Benchmark]: RCFGBuilder took 941.51 ms. Allocated memory is still 174.1 MB. Free memory was 134.2 MB in the beginning and 91.8 MB in the end (delta: 42.5 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:16,535 INFO L168 Benchmark]: BuchiAutomizer took 128915.88 ms. Allocated memory was 174.1 MB in the beginning and 230.7 MB in the end (delta: 56.6 MB). Free memory was 91.8 MB in the beginning and 105.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 91.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:16,536 INFO L168 Benchmark]: Witness Printer took 53.26 ms. Allocated memory is still 230.7 MB. Free memory was 105.8 MB in the beginning and 102.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:16,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 121.6 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 614.20 ms. Allocated memory was 121.6 MB in the beginning and 174.1 MB in the end (delta: 52.4 MB). Free memory was 91.9 MB in the beginning and 140.5 MB in the end (delta: -48.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.74 ms. Allocated memory is still 174.1 MB. Free memory was 140.5 MB in the beginning and 136.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.52 ms. Allocated memory is still 174.1 MB. Free memory was 136.8 MB in the beginning and 134.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 941.51 ms. Allocated memory is still 174.1 MB. Free memory was 134.2 MB in the beginning and 91.8 MB in the end (delta: 42.5 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 128915.88 ms. Allocated memory was 174.1 MB in the beginning and 230.7 MB in the end (delta: 56.6 MB). Free memory was 91.8 MB in the beginning and 105.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 91.2 MB. Max. memory is 16.1 GB. * Witness Printer took 53.26 ms. Allocated memory is still 230.7 MB. Free memory was 105.8 MB in the beginning and 102.8 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 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 409 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 128.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 127.9s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 61.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 254 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 409 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 575 SDtfs, 1445 SDslu, 1299 SDs, 0 SdLazy, 158 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 346.1ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 416]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=753} State at position 1 is {NULL=0, NULL=0, NULL=768, NULL=0, retValue_acc=1, NULL=753, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@377a1835=0, NULL=765, methaneLevelCritical=0, NULL=761, retValue_acc=0, tmp=0, NULL=0, NULL=770, NULL=0, tmp___1=0, NULL=0, NULL=782, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6dd9355=0, NULL=754, waterLevel=1, NULL=762, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a5f69dc=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68d1c4f4=0, head=0, pumpRunning=0, NULL=758, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@137d9a94=0, tmp=1, NULL=777, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49982e99=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64069835=71, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@eabfd2c=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@96f3bd8=0, tmp___0=0, NULL=755, NULL=779, NULL=760, tmp=0, head=0, NULL=0, NULL=769, retValue_acc=0, NULL=767, NULL=778, NULL=757, NULL=0, tmp___0=0, NULL=0, tmp=1, NULL=775, NULL=0, NULL=0, tmp=0, switchedOnBeforeTS=0, \result=0, NULL=0, systemActive=1, \result=1, NULL=0, NULL=783, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=781, NULL=771, tmp___0=0, \result=0, NULL=756, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e4b5521=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7afc0304=0, NULL=0, NULL=766, NULL=764, NULL=780, retValue_acc=1, tmp___2=71, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, NULL=776, NULL=0, NULL=0, NULL=774, NULL=0, NULL=763, NULL=759, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L107] int pumpRunning = 0; [L108] int systemActive = 1; [L305] int cleanupTimeShifts = 4; [L474] int switchedOnBeforeTS ; [L692] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; [L383] int retValue_acc ; [L384] int tmp ; [L88] int retValue_acc ; [L91] retValue_acc = 1 [L92] return (retValue_acc); [L390] tmp = valid_product() [L392] COND TRUE \read(tmp) [L479] switchedOnBeforeTS = 0 [L407] int splverifierCounter ; [L408] int tmp ; [L409] int tmp___0 ; [L410] int tmp___1 ; [L411] int tmp___2 ; [L414] splverifierCounter = 0 Loop: [L416] COND TRUE 1 [L418] COND TRUE splverifierCounter < 4 [L424] tmp = __VERIFIER_nondet_int() [L426] COND FALSE !(\read(tmp)) [L434] tmp___0 = __VERIFIER_nondet_int() [L436] COND FALSE !(\read(tmp___0)) [L444] tmp___2 = __VERIFIER_nondet_int() [L446] COND TRUE \read(tmp___2) [L226] int retValue_acc ; [L229] retValue_acc = pumpRunning [L230] return (retValue_acc); [L488] switchedOnBeforeTS = isPumpRunning() [L119] COND FALSE !(\read(pumpRunning)) [L126] COND TRUE \read(systemActive) [L174] int tmp ; [L177] COND FALSE !(\read(pumpRunning)) [L148] int tmp ; [L151] COND TRUE ! pumpRunning [L271] int retValue_acc ; [L272] int tmp ; [L273] int tmp___0 ; [L969] int retValue_acc ; [L972] COND TRUE waterLevel < 2 [L973] retValue_acc = 1 [L974] return (retValue_acc); [L277] tmp = isHighWaterSensorDry() [L279] COND TRUE \read(tmp) [L280] tmp___0 = 0 [L284] retValue_acc = tmp___0 [L285] return (retValue_acc); [L153] tmp = isHighWaterLevel() [L155] COND FALSE !(\read(tmp)) [L494] int tmp ; [L495] int tmp___0 ; [L960] int retValue_acc ; [L963] retValue_acc = waterLevel [L964] return (retValue_acc); [L499] tmp = getWaterLevel() [L501] COND TRUE tmp != 2 [L226] int retValue_acc ; [L229] retValue_acc = pumpRunning [L230] return (retValue_acc); [L503] tmp___0 = isPumpRunning() [L505] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:56:16,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6d77d9a-47a6-4749-bd5b-db23ac434d64/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...