./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg --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 e70c7d407828df40e6ca35d99b4a3a65ee0ebef631e767452684b3cd94b17437 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-b2eff8b [2021-10-28 09:31:52,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:31:52,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:31:52,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:31:52,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:31:52,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:31:52,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:31:52,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:31:52,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:31:52,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:31:52,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:31:52,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:31:52,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:31:52,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:31:52,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:31:52,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:31:52,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:31:52,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:31:52,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:31:52,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:31:52,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:31:52,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:31:52,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:31:52,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:31:52,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:31:52,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:31:52,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:31:52,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:31:52,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:31:52,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:31:52,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:31:52,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:31:52,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:31:52,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:31:52,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:31:52,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:31:52,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:31:52,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:31:52,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:31:52,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:31:52,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:31:52,390 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:31:52,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:31:52,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:31:52,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:31:52,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:31:52,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:31:52,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:31:52,440 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:31:52,440 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:31:52,441 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:31:52,441 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:31:52,442 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:31:52,442 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:31:52,443 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:31:52,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:31:52,443 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:31:52,444 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:31:52,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:31:52,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:31:52,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:31:52,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:31:52,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:31:52,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:31:52,446 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:31:52,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:31:52,446 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:31:52,446 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:31:52,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:31:52,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:31:52,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:31:52,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:31:52,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:31:52,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:31:52,450 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:31:52,450 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_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e70c7d407828df40e6ca35d99b4a3a65ee0ebef631e767452684b3cd94b17437 [2021-10-28 09:31:52,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:31:52,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:31:52,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:31:52,850 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:31:52,851 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:31:52,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2021-10-28 09:31:52,923 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/data/cb85818a2/ebe5493b5e234ea79e4c19d2779fe2a6/FLAGa13294dcf [2021-10-28 09:31:53,552 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:31:53,553 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2021-10-28 09:31:53,579 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/data/cb85818a2/ebe5493b5e234ea79e4c19d2779fe2a6/FLAGa13294dcf [2021-10-28 09:31:53,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/data/cb85818a2/ebe5493b5e234ea79e4c19d2779fe2a6 [2021-10-28 09:31:53,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:31:53,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:31:53,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:31:53,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:31:53,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:31:53,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f8c3d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53, skipping insertion in model container [2021-10-28 09:31:53,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:31:53,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:31:54,266 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_707285c6-5a2c-49d5-a08d-4b7906876427/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c[17256,17269] [2021-10-28 09:31:54,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:31:54,292 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:31:54,402 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_707285c6-5a2c-49d5-a08d-4b7906876427/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c[17256,17269] [2021-10-28 09:31:54,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:31:54,450 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:31:54,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:54 WrapperNode [2021-10-28 09:31:54,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:31:54,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:31:54,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:31:54,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:31:54,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:54" (1/1) ... [2021-10-28 09:31:54,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:54" (1/1) ... [2021-10-28 09:31:54,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:31:54,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:31:54,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:31:54,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:31:54,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:54" (1/1) ... [2021-10-28 09:31:54,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:54" (1/1) ... [2021-10-28 09:31:54,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:54" (1/1) ... [2021-10-28 09:31:54,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:54" (1/1) ... [2021-10-28 09:31:54,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:54" (1/1) ... [2021-10-28 09:31:54,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:54" (1/1) ... [2021-10-28 09:31:54,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:54" (1/1) ... [2021-10-28 09:31:54,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:31:54,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:31:54,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:31:54,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:31:54,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:54" (1/1) ... [2021-10-28 09:31:54,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:54,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:54,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:54,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:31:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:31:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:31:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:31:54,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:31:55,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:31:55,949 INFO L299 CfgBuilder]: Removed 168 assume(true) statements. [2021-10-28 09:31:55,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:31:55 BoogieIcfgContainer [2021-10-28 09:31:55,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:31:55,954 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:31:55,954 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:31:55,959 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:31:55,960 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:31:55,961 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:31:53" (1/3) ... [2021-10-28 09:31:55,963 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ea47330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:31:55, skipping insertion in model container [2021-10-28 09:31:55,963 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:31:55,964 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:54" (2/3) ... [2021-10-28 09:31:55,964 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ea47330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:31:55, skipping insertion in model container [2021-10-28 09:31:55,964 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:31:55,965 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:31:55" (3/3) ... [2021-10-28 09:31:55,966 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product52.cil.c [2021-10-28 09:31:56,020 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:31:56,020 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:31:56,020 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:31:56,020 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:31:56,021 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:31:56,021 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:31:56,021 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:31:56,021 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:31:56,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 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) [2021-10-28 09:31:56,076 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-10-28 09:31:56,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:31:56,077 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:31:56,086 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:31:56,086 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:31:56,086 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:31:56,087 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 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) [2021-10-28 09:31:56,097 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-10-28 09:31:56,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:31:56,098 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:31:56,099 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:31:56,099 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:31:56,104 INFO L791 eck$LassoCheckResult]: Stem: 112#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 37#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 76#L893true havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 119#L901true main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 36#L988true assume 0 != main_~tmp~9; 81#L965true havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 118#L69-1true [2021-10-28 09:31:56,105 INFO L793 eck$LassoCheckResult]: Loop: 118#L69-1true assume !false; 106#L801true assume test_~splverifierCounter~0 < 4; 48#L802true test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 7#L810true assume !(0 != test_~tmp~8); 110#L810-1true test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 24#L820true assume !(0 != test_~tmp___0~3); 61#L820-1true test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 99#L830true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 19#L838-1true assume !(0 != ~pumpRunning~0); 83#L576true assume !(0 != ~systemActive~0); 92#L583true havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 65#L137true __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 9#L63true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 118#L69-1true [2021-10-28 09:31:56,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-28 09:31:56,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:56,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24042993] [2021-10-28 09:31:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:56,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:56,485 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:56,722 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:56,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:56,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1670232129, now seen corresponding path program 1 times [2021-10-28 09:31:56,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:56,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611912898] [2021-10-28 09:31:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:56,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:56,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:31:56,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611912898] [2021-10-28 09:31:56,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611912898] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:31:56,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:31:56,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:31:56,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968116178] [2021-10-28 09:31:56,847 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:31:56,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:31:56,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:31:56,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:31:56,866 INFO L87 Difference]: Start difference. First operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:31:56,941 INFO L93 Difference]: Finished difference Result 238 states and 348 transitions. [2021-10-28 09:31:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:31:56,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 238 states and 348 transitions. [2021-10-28 09:31:56,959 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 154 [2021-10-28 09:31:56,967 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 238 states to 224 states and 333 transitions. [2021-10-28 09:31:56,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 224 [2021-10-28 09:31:56,970 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2021-10-28 09:31:56,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 333 transitions. [2021-10-28 09:31:56,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:31:56,974 INFO L681 BuchiCegarLoop]: Abstraction has 224 states and 333 transitions. [2021-10-28 09:31:56,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states and 333 transitions. [2021-10-28 09:31:57,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2021-10-28 09:31:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 222 states have (on average 1.4864864864864864) internal successors, (330), 221 states have internal predecessors, (330), 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) [2021-10-28 09:31:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 330 transitions. [2021-10-28 09:31:57,028 INFO L704 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2021-10-28 09:31:57,028 INFO L587 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2021-10-28 09:31:57,028 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:31:57,028 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 222 states and 330 transitions. [2021-10-28 09:31:57,033 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-10-28 09:31:57,033 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:31:57,033 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:31:57,034 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:31:57,034 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:31:57,035 INFO L791 eck$LassoCheckResult]: Stem: 494#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 430#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 431#L893 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 472#L901 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 428#L988 assume 0 != main_~tmp~9; 429#L965 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 380#L69-1 [2021-10-28 09:31:57,035 INFO L793 eck$LassoCheckResult]: Loop: 380#L69-1 assume !false; 490#L801 assume test_~splverifierCounter~0 < 4; 446#L802 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 374#L810 assume !(0 != test_~tmp~8); 376#L810-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 507#L820 assume !(0 != test_~tmp___0~3); 505#L820-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 487#L830 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 401#L838-1 assume !(0 != ~pumpRunning~0); 403#L576 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 475#L634 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 477#L608-1 assume !(0 == ~pumpRunning~0); 378#L583 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 461#L137 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 379#L63 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 380#L69-1 [2021-10-28 09:31:57,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:57,036 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-28 09:31:57,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:57,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880616042] [2021-10-28 09:31:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:57,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:57,102 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:57,177 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:57,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:57,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1415980259, now seen corresponding path program 1 times [2021-10-28 09:31:57,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:57,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902398029] [2021-10-28 09:31:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:57,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:57,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:57,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:31:57,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902398029] [2021-10-28 09:31:57,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902398029] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:31:57,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:31:57,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:31:57,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282721449] [2021-10-28 09:31:57,202 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:31:57,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:31:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:31:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:31:57,204 INFO L87 Difference]: Start difference. First operand 222 states and 330 transitions. cyclomatic complexity: 111 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:57,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:31:57,319 INFO L93 Difference]: Finished difference Result 317 states and 448 transitions. [2021-10-28 09:31:57,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:31:57,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 448 transitions. [2021-10-28 09:31:57,326 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-10-28 09:31:57,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 317 states and 448 transitions. [2021-10-28 09:31:57,340 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 317 [2021-10-28 09:31:57,341 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 317 [2021-10-28 09:31:57,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 317 states and 448 transitions. [2021-10-28 09:31:57,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:31:57,351 INFO L681 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2021-10-28 09:31:57,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states and 448 transitions. [2021-10-28 09:31:57,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2021-10-28 09:31:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 317 states have (on average 1.413249211356467) internal successors, (448), 316 states have internal predecessors, (448), 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) [2021-10-28 09:31:57,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 448 transitions. [2021-10-28 09:31:57,393 INFO L704 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2021-10-28 09:31:57,395 INFO L587 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2021-10-28 09:31:57,395 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:31:57,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 317 states and 448 transitions. [2021-10-28 09:31:57,399 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-10-28 09:31:57,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:31:57,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:31:57,405 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:31:57,405 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:31:57,405 INFO L791 eck$LassoCheckResult]: Stem: 1055#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 976#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 977#L893 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 1022#L901 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 974#L988 assume 0 != main_~tmp~9; 975#L965 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1025#L69-1 [2021-10-28 09:31:57,406 INFO L793 eck$LassoCheckResult]: Loop: 1025#L69-1 assume !false; 1161#L801 assume test_~splverifierCounter~0 < 4; 1160#L802 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 1159#L810 assume !(0 != test_~tmp~8); 1054#L810-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 955#L820 assume !(0 != test_~tmp___0~3); 956#L820-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 1006#L830 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 948#L838-1 assume !(0 != ~pumpRunning~0); 949#L576 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1026#L634 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 1029#L608-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1004#L177-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1005#L182-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 929#L736-3 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 930#L736-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 978#L742-1 processEnvironment__wrappee__highWaterSensor_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret55;havoc processEnvironment__wrappee__highWaterSensor_#t~ret55; 979#L612-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 925#L583 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1167#L137 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 1162#L63 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 1025#L69-1 [2021-10-28 09:31:57,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:57,406 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-28 09:31:57,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:57,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492554214] [2021-10-28 09:31:57,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:57,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:57,480 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:57,604 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:57,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:57,605 INFO L85 PathProgramCache]: Analyzing trace with hash 890409545, now seen corresponding path program 1 times [2021-10-28 09:31:57,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:57,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940168677] [2021-10-28 09:31:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:57,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:57,615 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:57,640 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:57,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1346480739, now seen corresponding path program 1 times [2021-10-28 09:31:57,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:57,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681935154] [2021-10-28 09:31:57,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:57,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:57,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:31:57,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681935154] [2021-10-28 09:31:57,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681935154] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:31:57,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:31:57,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:31:57,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984594107] [2021-10-28 09:31:58,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:31:58,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:31:58,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:31:58,193 INFO L87 Difference]: Start difference. First operand 317 states and 448 transitions. cyclomatic complexity: 134 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:58,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:31:58,330 INFO L93 Difference]: Finished difference Result 1101 states and 1566 transitions. [2021-10-28 09:31:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:31:58,331 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1101 states and 1566 transitions. [2021-10-28 09:31:58,346 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 834 [2021-10-28 09:31:58,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1101 states to 1101 states and 1566 transitions. [2021-10-28 09:31:58,360 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1101 [2021-10-28 09:31:58,362 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1101 [2021-10-28 09:31:58,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1101 states and 1566 transitions. [2021-10-28 09:31:58,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:31:58,366 INFO L681 BuchiCegarLoop]: Abstraction has 1101 states and 1566 transitions. [2021-10-28 09:31:58,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states and 1566 transitions. [2021-10-28 09:31:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 628. [2021-10-28 09:31:58,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 628 states have (on average 1.39171974522293) internal successors, (874), 627 states have internal predecessors, (874), 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) [2021-10-28 09:31:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 874 transitions. [2021-10-28 09:31:58,403 INFO L704 BuchiCegarLoop]: Abstraction has 628 states and 874 transitions. [2021-10-28 09:31:58,404 INFO L587 BuchiCegarLoop]: Abstraction has 628 states and 874 transitions. [2021-10-28 09:31:58,404 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:31:58,404 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 628 states and 874 transitions. [2021-10-28 09:31:58,410 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 446 [2021-10-28 09:31:58,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:31:58,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:31:58,412 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:31:58,412 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] [2021-10-28 09:31:58,412 INFO L791 eck$LassoCheckResult]: Stem: 2493#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 2411#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 2412#L893 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 2458#L901 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 2409#L988 assume 0 != main_~tmp~9; 2410#L965 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2462#L69-1 [2021-10-28 09:31:58,413 INFO L793 eck$LassoCheckResult]: Loop: 2462#L69-1 assume !false; 2682#L801 assume test_~splverifierCounter~0 < 4; 2680#L802 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 2677#L810 assume !(0 != test_~tmp~8); 2674#L810-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 2671#L820 assume !(0 != test_~tmp___0~3); 2668#L820-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 2665#L830 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2659#L838-1 assume !(0 != ~pumpRunning~0); 2638#L576 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 2639#L634 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 2630#L608-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 2625#L177-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 2621#L182-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 2616#L736-3 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 2611#L736-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 2606#L742-1 processEnvironment__wrappee__highWaterSensor_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret55;havoc processEnvironment__wrappee__highWaterSensor_#t~ret55; 2575#L612-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 2574#L583 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 2691#L137 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 2690#L63 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 2689#L169 __utac_acc__Specification3_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 2686#L69 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 2462#L69-1 [2021-10-28 09:31:58,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:58,414 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-28 09:31:58,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:58,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158808362] [2021-10-28 09:31:58,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:58,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:58,450 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:58,495 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:58,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:58,496 INFO L85 PathProgramCache]: Analyzing trace with hash 985089051, now seen corresponding path program 1 times [2021-10-28 09:31:58,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:58,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068950215] [2021-10-28 09:31:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:58,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:58,503 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:58,513 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:58,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:58,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1182842293, now seen corresponding path program 1 times [2021-10-28 09:31:58,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:58,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726809599] [2021-10-28 09:31:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:58,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:58,549 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:58,601 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:33:11,812 WARN L207 SmtUtils]: Spent 1.21 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-28 09:34:27,529 WARN L207 SmtUtils]: Spent 37.44 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-28 09:34:27,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:34:27 BoogieIcfgContainer [2021-10-28 09:34:27,725 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:34:27,726 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:34:27,726 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:34:27,726 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:34:27,727 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:31:55" (3/4) ... [2021-10-28 09:34:27,730 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:34:27,808 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:34:27,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:34:27,816 INFO L168 Benchmark]: Toolchain (without parser) took 153981.45 ms. Allocated memory was 155.2 MB in the beginning and 195.0 MB in the end (delta: 39.8 MB). Free memory was 113.8 MB in the beginning and 111.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:27,818 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 155.2 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:34:27,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.77 ms. Allocated memory is still 155.2 MB. Free memory was 113.7 MB in the beginning and 120.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:27,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 132.34 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 116.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:27,822 INFO L168 Benchmark]: Boogie Preprocessor took 92.85 ms. Allocated memory is still 155.2 MB. Free memory was 116.1 MB in the beginning and 114.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:27,823 INFO L168 Benchmark]: RCFGBuilder took 1272.51 ms. Allocated memory is still 155.2 MB. Free memory was 114.0 MB in the beginning and 71.3 MB in the end (delta: 42.7 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:27,824 INFO L168 Benchmark]: BuchiAutomizer took 151771.31 ms. Allocated memory was 155.2 MB in the beginning and 195.0 MB in the end (delta: 39.8 MB). Free memory was 71.3 MB in the beginning and 114.0 MB in the end (delta: -42.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:27,831 INFO L168 Benchmark]: Witness Printer took 89.55 ms. Allocated memory is still 195.0 MB. Free memory was 114.0 MB in the beginning and 111.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:27,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 155.2 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 614.77 ms. Allocated memory is still 155.2 MB. Free memory was 113.7 MB in the beginning and 120.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 132.34 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 116.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 92.85 ms. Allocated memory is still 155.2 MB. Free memory was 116.1 MB in the beginning and 114.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1272.51 ms. Allocated memory is still 155.2 MB. Free memory was 114.0 MB in the beginning and 71.3 MB in the end (delta: 42.7 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 151771.31 ms. Allocated memory was 155.2 MB in the beginning and 195.0 MB in the end (delta: 39.8 MB). Free memory was 71.3 MB in the beginning and 114.0 MB in the end (delta: -42.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 16.1 GB. * Witness Printer took 89.55 ms. Allocated memory is still 195.0 MB. Free memory was 114.0 MB in the beginning and 111.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 628 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 151.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 150.9s. Construction of modules took 0.1s. 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 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 475 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 628 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 608 SDtfs, 985 SDslu, 1058 SDs, 0 SdLazy, 85 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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: 800]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31994} State at position 1 is {NULL=0, NULL=0, NULL=31994, NULL=36382, NULL=0, NULL=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a45e4a7=0, NULL=36375, methaneLevelCritical=0, retValue_acc=0, NULL=0, tmp___1=0, tmp=0, NULL=0, NULL=36378, tmp=0, cleanupTimeShifts=4, NULL=36390, NULL=36394, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2277b0df=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, retValue_acc=1, \result=1, NULL=36391, NULL=0, NULL=0, tmp___0=0, tmp=1, NULL=36398, NULL=36384, head=0, tmp=0, tmp=1, NULL=0, NULL=36397, NULL=36396, NULL=36399, retValue_acc=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@318b39de=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@371613d9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14d350e4=0, NULL=0, NULL=36387, NULL=36393, NULL=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@734a9d0=0, NULL=0, NULL=0, NULL=36377, NULL=0, tmp___0=1, tmp=0, NULL=36388, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3266046c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@63604d=68, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d92cab0=0, NULL=0, systemActive=1, NULL=36380, \result=1, \result=0, NULL=36379, NULL=0, NULL=0, NULL=36395, retValue_acc=0, NULL=36392, \result=0, NULL=36383, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d7c1939=0, NULL=36386, NULL=36389, NULL=31996, tmp___2=68, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=31995, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2682efcb=0, NULL=36376, NULL=36381, NULL=0, NULL=0, NULL=0, NULL=36374, NULL=36385} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L94] int waterLevel = 1; [L95] int methaneLevelCritical = 0; [L366] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L569] int pumpRunning = 0; [L570] int systemActive = 1; [L906] int cleanupTimeShifts = 4; [L979] int retValue_acc ; [L980] int tmp ; [L897] int retValue_acc ; [L900] retValue_acc = 1 [L901] return (retValue_acc); [L986] tmp = valid_product() [L988] COND TRUE \read(tmp) [L791] int splverifierCounter ; [L792] int tmp ; [L793] int tmp___0 ; [L794] int tmp___1 ; [L795] int tmp___2 ; [L798] splverifierCounter = 0 Loop: [L800] COND TRUE 1 [L802] COND TRUE splverifierCounter < 4 [L808] tmp = __VERIFIER_nondet_int() [L810] COND FALSE !(\read(tmp)) [L818] tmp___0 = __VERIFIER_nondet_int() [L820] COND FALSE !(\read(tmp___0)) [L828] tmp___2 = __VERIFIER_nondet_int() [L830] COND TRUE \read(tmp___2) [L784] systemActive = 1 [L576] COND FALSE !(\read(pumpRunning)) [L583] COND TRUE \read(systemActive) [L631] int tmp ; [L634] COND FALSE !(\read(pumpRunning)) [L605] int tmp ; [L608] COND TRUE ! pumpRunning [L728] int retValue_acc ; [L729] int tmp ; [L730] int tmp___0 ; [L174] int retValue_acc ; [L177] COND TRUE waterLevel < 2 [L178] retValue_acc = 1 [L179] return (retValue_acc); [L734] tmp = isHighWaterSensorDry() [L736] COND TRUE \read(tmp) [L737] tmp___0 = 0 [L741] retValue_acc = tmp___0 [L742] return (retValue_acc); [L610] tmp = isHighWaterLevel() [L612] COND FALSE !(\read(tmp)) [L55] int tmp ; [L56] int tmp___0 ; [L57] int tmp___1 ; [L133] int retValue_acc ; [L136] retValue_acc = methaneLevelCritical [L137] return (retValue_acc); [L61] tmp = isMethaneLevelCritical() [L63] COND FALSE !(\read(tmp)) [L165] int retValue_acc ; [L168] retValue_acc = waterLevel [L169] return (retValue_acc); [L67] tmp___0 = getWaterLevel() [L69] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:34:27,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707285c6-5a2c-49d5-a08d-4b7906876427/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...