./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product63.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_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/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_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/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_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/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 a80dbad4927e9382ff212f6acae971cadaba99bba92d1fbe50466813cfe135a1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:52:45,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:52:45,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:52:45,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:52:45,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:52:45,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:52:45,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:52:45,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:52:45,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:52:45,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:52:45,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:52:45,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:52:45,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:52:45,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:52:45,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:52:45,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:52:45,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:52:45,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:52:45,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:52:45,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:52:45,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:52:45,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:52:45,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:52:45,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:52:45,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:52:45,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:52:45,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:52:45,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:52:45,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:52:45,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:52:45,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:52:45,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:52:45,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:52:45,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:52:45,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:52:45,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:52:45,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:52:45,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:52:45,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:52:45,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:52:45,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:52:45,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:52:45,391 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:52:45,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:52:45,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:52:45,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:52:45,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:52:45,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:52:45,394 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:52:45,394 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:52:45,394 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:52:45,395 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:52:45,396 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:52:45,396 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:52:45,396 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:52:45,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:52:45,397 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:52:45,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:52:45,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:52:45,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:52:45,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:52:45,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:52:45,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:52:45,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:52:45,399 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:52:45,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:52:45,399 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:52:45,399 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:52:45,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:52:45,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:52:45,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:52:45,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:52:45,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:52:45,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:52:45,404 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:52:45,405 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_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a80dbad4927e9382ff212f6acae971cadaba99bba92d1fbe50466813cfe135a1 [2021-10-28 09:52:45,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:52:45,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:52:45,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:52:45,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:52:45,774 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:52:45,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c [2021-10-28 09:52:45,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/data/2be51b139/8eae0e74776841458ad9e9b17d6fb3fc/FLAG172382fde [2021-10-28 09:52:46,599 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:52:46,600 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c [2021-10-28 09:52:46,614 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/data/2be51b139/8eae0e74776841458ad9e9b17d6fb3fc/FLAG172382fde [2021-10-28 09:52:46,857 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/data/2be51b139/8eae0e74776841458ad9e9b17d6fb3fc [2021-10-28 09:52:46,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:52:46,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:52:46,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:46,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:52:46,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:52:46,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:46" (1/1) ... [2021-10-28 09:52:46,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598de884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:46, skipping insertion in model container [2021-10-28 09:52:46,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:46" (1/1) ... [2021-10-28 09:52:46,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:52:46,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:52:47,318 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_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c[9205,9218] [2021-10-28 09:52:47,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:47,388 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:52:47,436 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_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c[9205,9218] [2021-10-28 09:52:47,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:47,517 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:52:47,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:47 WrapperNode [2021-10-28 09:52:47,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:47,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:52:47,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:52:47,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:52:47,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:47" (1/1) ... [2021-10-28 09:52:47,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:47" (1/1) ... [2021-10-28 09:52:47,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:52:47,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:52:47,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:52:47,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:52:47,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:47" (1/1) ... [2021-10-28 09:52:47,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:47" (1/1) ... [2021-10-28 09:52:47,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:47" (1/1) ... [2021-10-28 09:52:47,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:47" (1/1) ... [2021-10-28 09:52:47,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:47" (1/1) ... [2021-10-28 09:52:47,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:47" (1/1) ... [2021-10-28 09:52:47,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:47" (1/1) ... [2021-10-28 09:52:47,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:52:47,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:52:47,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:52:47,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:52:47,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:47" (1/1) ... [2021-10-28 09:52:47,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:52:47,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:47,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:52:47,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:52:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:52:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:52:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:52:47,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:52:49,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:52:49,288 INFO L299 CfgBuilder]: Removed 358 assume(true) statements. [2021-10-28 09:52:49,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:49 BoogieIcfgContainer [2021-10-28 09:52:49,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:52:49,293 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:52:49,293 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:52:49,297 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:52:49,298 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:52:49,298 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:52:46" (1/3) ... [2021-10-28 09:52:49,300 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36bd3d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:52:49, skipping insertion in model container [2021-10-28 09:52:49,300 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:52:49,300 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:47" (2/3) ... [2021-10-28 09:52:49,301 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36bd3d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:52:49, skipping insertion in model container [2021-10-28 09:52:49,301 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:52:49,302 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:49" (3/3) ... [2021-10-28 09:52:49,303 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product63.cil.c [2021-10-28 09:52:49,355 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:52:49,355 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:52:49,355 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:52:49,356 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:52:49,356 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:52:49,356 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:52:49,356 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:52:49,357 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:52:49,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 230 states, 229 states have (on average 1.5065502183406114) internal successors, (345), 229 states have internal predecessors, (345), 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 09:52:49,423 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 151 [2021-10-28 09:52:49,423 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:52:49,423 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:52:49,433 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:52:49,433 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:49,433 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:52:49,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 230 states, 229 states have (on average 1.5065502183406114) internal successors, (345), 229 states have internal predecessors, (345), 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 09:52:49,448 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 151 [2021-10-28 09:52:49,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:52:49,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:52:49,450 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:52:49,450 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:49,456 INFO L791 eck$LassoCheckResult]: Stem: 223#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(13);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string39.base, #t~string39.offset, 1);call write~init~int(77, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(101, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(116, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(104, #t~string39.base, 4 + #t~string39.offset, 1);call write~init~int(58, #t~string39.base, 5 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 6 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string41.base, #t~string41.offset, 1);call write~init~int(82, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(73, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(84, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 4 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string43.base, #t~string43.offset, 1);call write~init~int(75, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 2 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string45.base, #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 1 + #t~string45.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 149#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 154#L176true havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 65#L184true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 43#L140true assume 0 != main_~tmp~0; 215#L113true havoc test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 54#L649-1true [2021-10-28 09:52:49,457 INFO L793 eck$LassoCheckResult]: Loop: 54#L649-1true assume !false; 104#L465true assume test_~splverifierCounter~0 < 4; 229#L466true test_~tmp~7 := test_#t~nondet32;havoc test_#t~nondet32; 42#L474true assume !(0 != test_~tmp~7); 120#L474-1true test_~tmp___0~2 := test_#t~nondet33;havoc test_#t~nondet33; 96#L484true assume !(0 != test_~tmp___0~2); 79#L484-1true test_~tmp___2~0 := test_#t~nondet34;havoc test_#t~nondet34; 186#L494true assume 0 != test_~tmp___2~0; 67#L500-1true assume !(0 != ~pumpRunning~0); 26#L206true assume !(0 != ~systemActive~0); 101#L213true havoc __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_#t~ret48, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 82#L565-5true __utac_acc__Specification3_spec__1_#t~ret46 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret46;havoc __utac_acc__Specification3_spec__1_#t~ret46; 27#L643true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 54#L649-1true [2021-10-28 09:52:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:49,463 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-28 09:52:49,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:49,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747671097] [2021-10-28 09:52:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:49,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:49,786 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:52:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:50,048 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:52:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:50,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1666538050, now seen corresponding path program 1 times [2021-10-28 09:52:50,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:50,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009596084] [2021-10-28 09:52:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:50,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:50,076 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:52:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:50,112 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:52:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:50,116 INFO L85 PathProgramCache]: Analyzing trace with hash 47740888, now seen corresponding path program 1 times [2021-10-28 09:52:50,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:50,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810666974] [2021-10-28 09:52:50,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:50,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:50,342 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 09:52:50,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:50,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810666974] [2021-10-28 09:52:50,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810666974] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:50,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:50,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:52:50,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883300940] [2021-10-28 09:52:50,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:50,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:52:50,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:50,518 INFO L87 Difference]: Start difference. First operand has 230 states, 229 states have (on average 1.5065502183406114) internal successors, (345), 229 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:50,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:50,860 INFO L93 Difference]: Finished difference Result 510 states and 741 transitions. [2021-10-28 09:52:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:52:50,863 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 510 states and 741 transitions. [2021-10-28 09:52:50,885 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 333 [2021-10-28 09:52:50,903 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 510 states to 489 states and 720 transitions. [2021-10-28 09:52:50,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 489 [2021-10-28 09:52:50,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 489 [2021-10-28 09:52:50,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 489 states and 720 transitions. [2021-10-28 09:52:50,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:52:50,920 INFO L681 BuchiCegarLoop]: Abstraction has 489 states and 720 transitions. [2021-10-28 09:52:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states and 720 transitions. [2021-10-28 09:52:50,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 270. [2021-10-28 09:52:50,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 270 states have (on average 1.4666666666666666) internal successors, (396), 269 states have internal predecessors, (396), 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 09:52:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 396 transitions. [2021-10-28 09:52:51,002 INFO L704 BuchiCegarLoop]: Abstraction has 270 states and 396 transitions. [2021-10-28 09:52:51,003 INFO L587 BuchiCegarLoop]: Abstraction has 270 states and 396 transitions. [2021-10-28 09:52:51,004 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:52:51,004 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 270 states and 396 transitions. [2021-10-28 09:52:51,009 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 184 [2021-10-28 09:52:51,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:52:51,010 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:52:51,012 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:52:51,013 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:51,014 INFO L791 eck$LassoCheckResult]: Stem: 981#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(13);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string39.base, #t~string39.offset, 1);call write~init~int(77, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(101, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(116, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(104, #t~string39.base, 4 + #t~string39.offset, 1);call write~init~int(58, #t~string39.base, 5 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 6 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string41.base, #t~string41.offset, 1);call write~init~int(82, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(73, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(84, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 4 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string43.base, #t~string43.offset, 1);call write~init~int(75, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 2 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string45.base, #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 1 + #t~string45.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 950#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 951#L176 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 869#L184 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 836#L140 assume 0 != main_~tmp~0; 837#L113 havoc test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 810#L649-1 [2021-10-28 09:52:51,014 INFO L793 eck$LassoCheckResult]: Loop: 810#L649-1 assume !false; 853#L465 assume test_~splverifierCounter~0 < 4; 914#L466 test_~tmp~7 := test_#t~nondet32;havoc test_#t~nondet32; 833#L474 assume !(0 != test_~tmp~7); 835#L474-1 test_~tmp___0~2 := test_#t~nondet33;havoc test_#t~nondet33; 903#L484 assume !(0 != test_~tmp___0~2); 885#L484-1 test_~tmp___2~0 := test_#t~nondet34;havoc test_#t~nondet34; 886#L494 assume 0 != test_~tmp___2~0; 870#L500-1 assume !(0 != ~pumpRunning~0); 807#L206 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret11, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 808#L290 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret10, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 913#L264-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret9, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 952#L238-3 assume !(0 == ~pumpRunning~0); 770#L213 havoc __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_#t~ret48, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 890#L565-5 __utac_acc__Specification3_spec__1_#t~ret46 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret46;havoc __utac_acc__Specification3_spec__1_#t~ret46; 809#L643 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 810#L649-1 [2021-10-28 09:52:51,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:51,015 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-28 09:52:51,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:51,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334113586] [2021-10-28 09:52:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:51,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:51,129 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:52:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:51,196 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:52:51,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:51,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1439331020, now seen corresponding path program 1 times [2021-10-28 09:52:51,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:51,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248795763] [2021-10-28 09:52:51,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:51,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:51,216 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 09:52:51,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:51,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248795763] [2021-10-28 09:52:51,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248795763] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:51,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:51,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:52:51,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138937510] [2021-10-28 09:52:51,218 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:52:51,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:51,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:51,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:51,219 INFO L87 Difference]: Start difference. First operand 270 states and 396 transitions. cyclomatic complexity: 129 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 09:52:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:51,375 INFO L93 Difference]: Finished difference Result 270 states and 373 transitions. [2021-10-28 09:52:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:51,376 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 270 states and 373 transitions. [2021-10-28 09:52:51,380 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 188 [2021-10-28 09:52:51,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 270 states to 270 states and 373 transitions. [2021-10-28 09:52:51,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 270 [2021-10-28 09:52:51,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 270 [2021-10-28 09:52:51,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 373 transitions. [2021-10-28 09:52:51,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:52:51,385 INFO L681 BuchiCegarLoop]: Abstraction has 270 states and 373 transitions. [2021-10-28 09:52:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 373 transitions. [2021-10-28 09:52:51,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-10-28 09:52:51,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 270 states have (on average 1.3814814814814815) internal successors, (373), 269 states have internal predecessors, (373), 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 09:52:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 373 transitions. [2021-10-28 09:52:51,412 INFO L704 BuchiCegarLoop]: Abstraction has 270 states and 373 transitions. [2021-10-28 09:52:51,412 INFO L587 BuchiCegarLoop]: Abstraction has 270 states and 373 transitions. [2021-10-28 09:52:51,413 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:52:51,413 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 270 states and 373 transitions. [2021-10-28 09:52:51,415 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 188 [2021-10-28 09:52:51,415 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:52:51,416 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:52:51,416 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:52:51,417 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:51,417 INFO L791 eck$LassoCheckResult]: Stem: 1491#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(13);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string39.base, #t~string39.offset, 1);call write~init~int(77, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(101, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(116, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(104, #t~string39.base, 4 + #t~string39.offset, 1);call write~init~int(58, #t~string39.base, 5 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 6 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string41.base, #t~string41.offset, 1);call write~init~int(82, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(73, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(84, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 4 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string43.base, #t~string43.offset, 1);call write~init~int(75, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 2 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string45.base, #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 1 + #t~string45.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 1396#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1397#L176 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 1408#L184 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1429#L140 assume 0 != main_~tmp~0; 1430#L113 havoc test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1386#L649-1 [2021-10-28 09:52:51,417 INFO L793 eck$LassoCheckResult]: Loop: 1386#L649-1 assume !false; 1449#L465 assume test_~splverifierCounter~0 < 4; 1495#L466 test_~tmp~7 := test_#t~nondet32;havoc test_#t~nondet32; 1428#L474 assume !(0 != test_~tmp~7); 1334#L474-1 test_~tmp___0~2 := test_#t~nondet33;havoc test_#t~nondet33; 1335#L484 assume !(0 != test_~tmp___0~2); 1404#L484-1 test_~tmp___2~0 := test_#t~nondet34;havoc test_#t~nondet34; 1453#L494 assume 0 != test_~tmp___2~0; 1454#L500-1 assume !(0 != ~pumpRunning~0); 1459#L206 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret11, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1494#L290 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret10, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 1458#L264-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret9, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1401#L238-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret30, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 1402#L605-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 1313#L610-3 isHighWaterLevel_#t~ret30 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret30;havoc isHighWaterLevel_#t~ret30; 1314#L409-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~0 := 0; 1321#L409-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1322#L415-3 processEnvironment__wrappee__highWaterSensor_#t~ret9 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret9;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9; 1346#L242-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1337#L213 havoc __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_#t~ret48, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 1477#L565-5 __utac_acc__Specification3_spec__1_#t~ret46 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret46;havoc __utac_acc__Specification3_spec__1_#t~ret46; 1385#L643 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 1386#L649-1 [2021-10-28 09:52:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:51,418 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-28 09:52:51,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:51,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481572177] [2021-10-28 09:52:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:51,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:51,522 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:52:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:51,589 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:52:51,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:51,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1579572224, now seen corresponding path program 1 times [2021-10-28 09:52:51,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:51,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782583274] [2021-10-28 09:52:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:51,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:51,599 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:52:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:51,609 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:52:51,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:51,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1462089946, now seen corresponding path program 1 times [2021-10-28 09:52:51,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:51,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698254590] [2021-10-28 09:52:51,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:51,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:51,673 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 09:52:51,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:51,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698254590] [2021-10-28 09:52:51,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698254590] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:51,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:51,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:52:51,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761308613] [2021-10-28 09:52:51,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:51,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:52:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:51,988 INFO L87 Difference]: Start difference. First operand 270 states and 373 transitions. cyclomatic complexity: 106 Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 09:52:52,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:52,306 INFO L93 Difference]: Finished difference Result 897 states and 1240 transitions. [2021-10-28 09:52:52,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:52:52,306 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 897 states and 1240 transitions. [2021-10-28 09:52:52,316 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 655 [2021-10-28 09:52:52,326 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 897 states to 897 states and 1240 transitions. [2021-10-28 09:52:52,326 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 897 [2021-10-28 09:52:52,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 897 [2021-10-28 09:52:52,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 897 states and 1240 transitions. [2021-10-28 09:52:52,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:52:52,330 INFO L681 BuchiCegarLoop]: Abstraction has 897 states and 1240 transitions. [2021-10-28 09:52:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states and 1240 transitions. [2021-10-28 09:52:52,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 534. [2021-10-28 09:52:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 534 states have (on average 1.3632958801498127) internal successors, (728), 533 states have internal predecessors, (728), 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 09:52:52,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 728 transitions. [2021-10-28 09:52:52,356 INFO L704 BuchiCegarLoop]: Abstraction has 534 states and 728 transitions. [2021-10-28 09:52:52,356 INFO L587 BuchiCegarLoop]: Abstraction has 534 states and 728 transitions. [2021-10-28 09:52:52,357 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:52:52,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 534 states and 728 transitions. [2021-10-28 09:52:52,361 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 376 [2021-10-28 09:52:52,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:52:52,361 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:52:52,363 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:52:52,363 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:52,364 INFO L791 eck$LassoCheckResult]: Stem: 2697#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(13);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string39.base, #t~string39.offset, 1);call write~init~int(77, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(101, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(116, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(104, #t~string39.base, 4 + #t~string39.offset, 1);call write~init~int(58, #t~string39.base, 5 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 6 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string41.base, #t~string41.offset, 1);call write~init~int(82, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(73, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(84, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 4 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string43.base, #t~string43.offset, 1);call write~init~int(75, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 2 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string45.base, #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 1 + #t~string45.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 2588#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 2589#L176 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 2598#L184 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 2619#L140 assume 0 != main_~tmp~0; 2620#L113 havoc test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2686#L649-1 [2021-10-28 09:52:52,365 INFO L793 eck$LassoCheckResult]: Loop: 2686#L649-1 assume !false; 2941#L465 assume test_~splverifierCounter~0 < 4; 2709#L466 test_~tmp~7 := test_#t~nondet32;havoc test_#t~nondet32; 2618#L474 assume !(0 != test_~tmp~7); 2554#L474-1 test_~tmp___0~2 := test_#t~nondet33;havoc test_#t~nondet33; 2992#L484 assume !(0 != test_~tmp___0~2); 2990#L484-1 test_~tmp___2~0 := test_#t~nondet34;havoc test_#t~nondet34; 2989#L494 assume 0 != test_~tmp___2~0; 2976#L500-1 assume !(0 != ~pumpRunning~0); 2942#L206 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret11, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 2706#L290 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret10, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 2655#L264-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret9, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 2590#L238-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret30, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 2591#L605-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 2498#L610-3 isHighWaterLevel_#t~ret30 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret30;havoc isHighWaterLevel_#t~ret30; 2499#L409-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~0 := 0; 2506#L409-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 2507#L415-3 processEnvironment__wrappee__highWaterSensor_#t~ret9 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret9;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9; 2529#L242-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 2520#L213 havoc __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_#t~ret48, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 2967#L565-5 __utac_acc__Specification3_spec__1_#t~ret46 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret46;havoc __utac_acc__Specification3_spec__1_#t~ret46; 2966#L643 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 2687#L597 __utac_acc__Specification3_spec__1_#t~ret47 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~3 := __utac_acc__Specification3_spec__1_#t~ret47;havoc __utac_acc__Specification3_spec__1_#t~ret47; 2688#L649 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3); 2686#L649-1 [2021-10-28 09:52:52,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:52,365 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-28 09:52:52,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:52,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260331851] [2021-10-28 09:52:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:52,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:52,419 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:52:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:52,499 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:52:52,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:52,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1845464786, now seen corresponding path program 1 times [2021-10-28 09:52:52,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:52,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133343944] [2021-10-28 09:52:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:52,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:52,517 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:52:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:52,534 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:52:52,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:52,538 INFO L85 PathProgramCache]: Analyzing trace with hash -614119304, now seen corresponding path program 1 times [2021-10-28 09:52:52,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:52,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173770937] [2021-10-28 09:52:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:52,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:52,597 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:52:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:52,678 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:54:05,870 WARN L207 SmtUtils]: Spent 1.21 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-28 09:55:23,184 WARN L207 SmtUtils]: Spent 37.55 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-28 09:55:23,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:55:23 BoogieIcfgContainer [2021-10-28 09:55:23,360 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:55:23,361 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:55:23,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:55:23,361 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:55:23,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:49" (3/4) ... [2021-10-28 09:55:23,366 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:55:23,451 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:55:23,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:55:23,456 INFO L168 Benchmark]: Toolchain (without parser) took 156578.93 ms. Allocated memory was 115.3 MB in the beginning and 159.4 MB in the end (delta: 44.0 MB). Free memory was 73.7 MB in the beginning and 95.4 MB in the end (delta: -21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:23,457 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 115.3 MB. Free memory was 90.8 MB in the beginning and 90.7 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:55:23,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.71 ms. Allocated memory is still 115.3 MB. Free memory was 73.5 MB in the beginning and 82.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:23,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.34 ms. Allocated memory is still 115.3 MB. Free memory was 82.5 MB in the beginning and 77.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:23,459 INFO L168 Benchmark]: Boogie Preprocessor took 108.45 ms. Allocated memory is still 115.3 MB. Free memory was 77.0 MB in the beginning and 72.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:23,459 INFO L168 Benchmark]: RCFGBuilder took 1534.06 ms. Allocated memory is still 115.3 MB. Free memory was 72.8 MB in the beginning and 70.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:23,460 INFO L168 Benchmark]: BuchiAutomizer took 154067.49 ms. Allocated memory was 115.3 MB in the beginning and 159.4 MB in the end (delta: 44.0 MB). Free memory was 70.4 MB in the beginning and 98.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 88.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:23,460 INFO L168 Benchmark]: Witness Printer took 94.03 ms. Allocated memory is still 159.4 MB. Free memory was 98.4 MB in the beginning and 95.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:23,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 115.3 MB. Free memory was 90.8 MB in the beginning and 90.7 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 639.71 ms. Allocated memory is still 115.3 MB. Free memory was 73.5 MB in the beginning and 82.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 128.34 ms. Allocated memory is still 115.3 MB. Free memory was 82.5 MB in the beginning and 77.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 108.45 ms. Allocated memory is still 115.3 MB. Free memory was 77.0 MB in the beginning and 72.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1534.06 ms. Allocated memory is still 115.3 MB. Free memory was 72.8 MB in the beginning and 70.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 154067.49 ms. Allocated memory was 115.3 MB in the beginning and 159.4 MB in the end (delta: 44.0 MB). Free memory was 70.4 MB in the beginning and 98.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 88.7 MB. Max. memory is 16.1 GB. * Witness Printer took 94.03 ms. Allocated memory is still 159.4 MB. Free memory was 98.4 MB in the beginning and 95.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 534 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 153.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 152.7s. Construction of modules took 0.4s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 582 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 534 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 949 SDtfs, 2524 SDslu, 2501 SDs, 0 SdLazy, 244 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 464]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=26667} State at position 1 is {NULL=0, NULL=26667, NULL=26674, NULL=0, NULL=0, NULL=26686, NULL=0, methaneLevelCritical=0, NULL=26688, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32052607=0, retValue_acc=0, NULL=0, tmp=0, NULL=26679, NULL=0, tmp___1=0, NULL=26672, NULL=26669, NULL=0, NULL=26677, cleanupTimeShifts=4, NULL=26687, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34668668=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ff77ed3=55, NULL=26683, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f0d9389=0, NULL=0, NULL=0, waterLevel=1, \result=1, retValue_acc=1, head=0, pumpRunning=0, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27b5d709=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65684c68=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c76b0f4=0, tmp___0=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@632f3801=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43ea81d7=0, NULL=26680, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@fb97ace=0, tmp=0, head=0, NULL=26695, NULL=0, NULL=0, NULL=26691, tmp=0, NULL=26684, retValue_acc=0, NULL=0, NULL=26676, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ffc779b=0, NULL=26673, NULL=0, tmp___0=0, NULL=0, NULL=26689, NULL=26694, NULL=0, tmp=0, NULL=26668, tmp___0=1, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=26678, \result=1, retValue_acc=0, \result=0, NULL=26692, \result=0, NULL=26670, NULL=0, NULL=0, NULL=0, NULL=26685, NULL=26693, NULL=26690, retValue_acc=1, tmp___2=55, splverifierCounter=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e92ce18=0, \result=0, NULL=26682, NULL=26675, NULL=26681, tmp___1=0, NULL=26671} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int cleanupTimeShifts = 4; [L198] int pumpRunning = 0; [L199] int systemActive = 1; [L522] int waterLevel = 1; [L523] int methaneLevelCritical = 0; [L837] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L131] int retValue_acc ; [L132] int tmp ; [L180] int retValue_acc ; [L183] retValue_acc = 1 [L184] return (retValue_acc); [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L455] int splverifierCounter ; [L456] int tmp ; [L457] int tmp___0 ; [L458] int tmp___1 ; [L459] int tmp___2 ; [L462] splverifierCounter = 0 Loop: [L464] COND TRUE 1 [L466] COND TRUE splverifierCounter < 4 [L472] tmp = __VERIFIER_nondet_int() [L474] COND FALSE !(\read(tmp)) [L482] tmp___0 = __VERIFIER_nondet_int() [L484] COND FALSE !(\read(tmp___0)) [L492] tmp___2 = __VERIFIER_nondet_int() [L494] COND TRUE \read(tmp___2) [L206] COND FALSE !(\read(pumpRunning)) [L213] COND TRUE \read(systemActive) [L287] int tmp ; [L290] COND FALSE !(\read(pumpRunning)) [L261] int tmp ; [L264] COND FALSE !(\read(pumpRunning)) [L235] int tmp ; [L238] COND TRUE ! pumpRunning [L401] int retValue_acc ; [L402] int tmp ; [L403] int tmp___0 ; [L602] int retValue_acc ; [L605] COND TRUE waterLevel < 2 [L606] retValue_acc = 1 [L607] return (retValue_acc); [L407] tmp = isHighWaterSensorDry() [L409] COND TRUE \read(tmp) [L410] tmp___0 = 0 [L414] retValue_acc = tmp___0 [L415] return (retValue_acc); [L240] tmp = isHighWaterLevel() [L242] COND FALSE !(\read(tmp)) [L635] int tmp ; [L636] int tmp___0 ; [L637] int tmp___1 ; [L561] int retValue_acc ; [L564] retValue_acc = methaneLevelCritical [L565] return (retValue_acc); [L641] tmp = isMethaneLevelCritical() [L643] COND FALSE !(\read(tmp)) [L593] int retValue_acc ; [L596] retValue_acc = waterLevel [L597] return (retValue_acc); [L647] tmp___0 = getWaterLevel() [L649] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:55:23,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_519e961b-66fc-4930-8bfc-ea23d1e1fdf0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...