./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product33.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_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/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_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/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_e3bdc41c-898e-434a-a847-86729a219c92/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 fff07e5b9817da9e6fd154070162cff001ebe527349ae31a2f1e574ef0fb9f98 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 08:45:19,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:45:19,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:45:19,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:45:19,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:45:19,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:45:19,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:45:19,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:45:19,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:45:19,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:45:19,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:45:19,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:45:19,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:45:19,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:45:19,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:45:19,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:45:19,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:45:19,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:45:19,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:45:19,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:45:19,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:45:19,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:45:19,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:45:19,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:45:19,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:45:19,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:45:19,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:45:19,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:45:19,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:45:19,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:45:19,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:45:19,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:45:19,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:45:19,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:45:19,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:45:19,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:45:19,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:45:19,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:45:19,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:45:19,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:45:19,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:45:19,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 08:45:19,388 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:45:19,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:45:19,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:45:19,389 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:45:19,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:45:19,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:45:19,391 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:45:19,391 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 08:45:19,391 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 08:45:19,392 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 08:45:19,392 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 08:45:19,392 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 08:45:19,392 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 08:45:19,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:45:19,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:45:19,393 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:45:19,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:45:19,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:45:19,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:45:19,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 08:45:19,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 08:45:19,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 08:45:19,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:45:19,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:45:19,396 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 08:45:19,396 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:45:19,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 08:45:19,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:45:19,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:45:19,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:45:19,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:45:19,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:45:19,399 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 08:45:19,399 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_e3bdc41c-898e-434a-a847-86729a219c92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fff07e5b9817da9e6fd154070162cff001ebe527349ae31a2f1e574ef0fb9f98 [2021-10-28 08:45:19,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:45:19,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:45:19,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:45:19,808 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:45:19,809 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:45:19,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec5_product33.cil.c [2021-10-28 08:45:19,903 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/data/b1cb46f7c/2e8d1ce274d340e383a5a938852c90ce/FLAG9717b9cf5 [2021-10-28 08:45:20,550 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:45:20,552 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/sv-benchmarks/c/product-lines/minepump_spec5_product33.cil.c [2021-10-28 08:45:20,569 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/data/b1cb46f7c/2e8d1ce274d340e383a5a938852c90ce/FLAG9717b9cf5 [2021-10-28 08:45:20,779 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/data/b1cb46f7c/2e8d1ce274d340e383a5a938852c90ce [2021-10-28 08:45:20,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:45:20,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:45:20,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:45:20,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:45:20,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:45:20,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:45:20" (1/1) ... [2021-10-28 08:45:20,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15290418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:20, skipping insertion in model container [2021-10-28 08:45:20,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:45:20" (1/1) ... [2021-10-28 08:45:20,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:45:20,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:45:21,239 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_e3bdc41c-898e-434a-a847-86729a219c92/sv-benchmarks/c/product-lines/minepump_spec5_product33.cil.c[16170,16183] [2021-10-28 08:45:21,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:45:21,300 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:45:21,388 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_e3bdc41c-898e-434a-a847-86729a219c92/sv-benchmarks/c/product-lines/minepump_spec5_product33.cil.c[16170,16183] [2021-10-28 08:45:21,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:45:21,428 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:45:21,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:21 WrapperNode [2021-10-28 08:45:21,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:45:21,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:45:21,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:45:21,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:45:21,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:21" (1/1) ... [2021-10-28 08:45:21,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:21" (1/1) ... [2021-10-28 08:45:21,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:45:21,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:45:21,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:45:21,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:45:21,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:21" (1/1) ... [2021-10-28 08:45:21,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:21" (1/1) ... [2021-10-28 08:45:21,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:21" (1/1) ... [2021-10-28 08:45:21,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:21" (1/1) ... [2021-10-28 08:45:21,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:21" (1/1) ... [2021-10-28 08:45:21,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:21" (1/1) ... [2021-10-28 08:45:21,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:21" (1/1) ... [2021-10-28 08:45:21,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:45:21,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:45:21,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:45:21,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:45:21,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:21" (1/1) ... [2021-10-28 08:45:21,630 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:45:21,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:45:21,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:45:21,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 08:45:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:45:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:45:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:45:21,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:45:22,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:45:22,774 INFO L299 CfgBuilder]: Removed 110 assume(true) statements. [2021-10-28 08:45:22,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:45:22 BoogieIcfgContainer [2021-10-28 08:45:22,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:45:22,778 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 08:45:22,779 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 08:45:22,783 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 08:45:22,784 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:45:22,784 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 08:45:20" (1/3) ... [2021-10-28 08:45:22,786 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68162d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:45:22, skipping insertion in model container [2021-10-28 08:45:22,786 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:45:22,786 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:21" (2/3) ... [2021-10-28 08:45:22,787 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68162d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:45:22, skipping insertion in model container [2021-10-28 08:45:22,787 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:45:22,787 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:45:22" (3/3) ... [2021-10-28 08:45:22,789 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product33.cil.c [2021-10-28 08:45:22,840 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 08:45:22,840 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 08:45:22,841 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 08:45:22,841 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 08:45:22,841 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 08:45:22,841 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 08:45:22,841 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 08:45:22,842 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 08:45:22,863 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 84 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 83 states have internal predecessors, (126), 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 08:45:22,891 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-10-28 08:45:22,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:45:22,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:45:22,901 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:22,902 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:22,902 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 08:45:22,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 84 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 83 states have internal predecessors, (126), 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 08:45:22,921 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-10-28 08:45:22,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:45:22,923 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:45:22,925 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:22,925 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:22,938 INFO L791 eck$LassoCheckResult]: Stem: 68#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(110, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(102, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(102, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 3 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string55.base, #t~string55.offset, 1);call write~init~int(80, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(117, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(109, #t~string55.base, 3 + #t~string55.offset, 1);call write~init~int(112, #t~string55.base, 4 + #t~string55.offset, 1);call write~init~int(58, #t~string55.base, 5 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 6 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(110, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 3 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string61.base, #t~string61.offset, 1);call write~init~int(32, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string63.base, #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 1 + #t~string63.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0; 56#L-1true havoc main_#res;havoc main_#t~ret66, main_~retValue_acc~8, main_~tmp~6;havoc main_~retValue_acc~8;havoc main_~tmp~6; 84#L675true havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 15#L683true main_#t~ret66 := valid_product_#res;main_~tmp~6 := main_#t~ret66;havoc main_#t~ret66; 8#L772true assume 0 != main_~tmp~6; 16#L747true ~switchedOnBeforeTS~0 := 0; 12#L896true havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 9#L917-1true [2021-10-28 08:45:22,939 INFO L793 eck$LassoCheckResult]: Loop: 9#L917-1true assume !false; 76#L431true assume test_~splverifierCounter~0 < 4; 28#L432true test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 43#L440true assume !(0 != test_~tmp~3); 34#L440-1true test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 38#L450true assume !(0 != test_~tmp___0~0); 61#L450-1true test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 75#L460true assume 0 != test_~tmp___2~0; 23#L466-2true havoc __utac_acc__Specification5_spec__2_#t~ret77;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 63#L590true __utac_acc__Specification5_spec__2_#t~ret77 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret77;havoc __utac_acc__Specification5_spec__2_#t~ret77; 48#L906true assume !(0 != ~pumpRunning~0); 47#L505true assume !(0 != ~systemActive~0); 22#L512true havoc __utac_acc__Specification5_spec__3_#t~ret78, __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 45#L871true __utac_acc__Specification5_spec__3_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret78;havoc __utac_acc__Specification5_spec__3_#t~ret78; 59#L917true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 9#L917-1true [2021-10-28 08:45:22,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:22,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-28 08:45:22,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:22,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985508779] [2021-10-28 08:45:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:22,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:23,257 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:45:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:23,460 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:45:23,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:23,474 INFO L85 PathProgramCache]: Analyzing trace with hash 94350828, now seen corresponding path program 1 times [2021-10-28 08:45:23,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:23,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52581795] [2021-10-28 08:45:23,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:23,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:23,495 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:45:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:23,515 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:45:23,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:23,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2028376038, now seen corresponding path program 1 times [2021-10-28 08:45:23,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:23,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115046146] [2021-10-28 08:45:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:23,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:23,771 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 08:45:23,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:23,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115046146] [2021-10-28 08:45:23,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115046146] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:23,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:23,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:45:23,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092232000] [2021-10-28 08:45:24,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:24,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:45:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:45:24,088 INFO L87 Difference]: Start difference. First operand has 84 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 83 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:45:24,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:24,420 INFO L93 Difference]: Finished difference Result 84 states and 115 transitions. [2021-10-28 08:45:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:45:24,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 115 transitions. [2021-10-28 08:45:24,426 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-28 08:45:24,432 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 77 states and 108 transitions. [2021-10-28 08:45:24,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2021-10-28 08:45:24,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2021-10-28 08:45:24,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 108 transitions. [2021-10-28 08:45:24,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:45:24,437 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2021-10-28 08:45:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 108 transitions. [2021-10-28 08:45:24,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-10-28 08:45:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 77 states have (on average 1.4025974025974026) internal successors, (108), 76 states have internal predecessors, (108), 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 08:45:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2021-10-28 08:45:24,472 INFO L704 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2021-10-28 08:45:24,472 INFO L587 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2021-10-28 08:45:24,473 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 08:45:24,473 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 77 states and 108 transitions. [2021-10-28 08:45:24,475 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-28 08:45:24,475 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:45:24,475 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:45:24,476 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:24,476 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 08:45:24,477 INFO L791 eck$LassoCheckResult]: Stem: 260#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(110, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(102, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(102, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 3 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string55.base, #t~string55.offset, 1);call write~init~int(80, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(117, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(109, #t~string55.base, 3 + #t~string55.offset, 1);call write~init~int(112, #t~string55.base, 4 + #t~string55.offset, 1);call write~init~int(58, #t~string55.base, 5 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 6 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(110, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 3 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string61.base, #t~string61.offset, 1);call write~init~int(32, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string63.base, #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 1 + #t~string63.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0; 252#L-1 havoc main_#res;havoc main_#t~ret66, main_~retValue_acc~8, main_~tmp~6;havoc main_~retValue_acc~8;havoc main_~tmp~6; 253#L675 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 206#L683 main_#t~ret66 := valid_product_#res;main_~tmp~6 := main_#t~ret66;havoc main_#t~ret66; 192#L772 assume 0 != main_~tmp~6; 193#L747 ~switchedOnBeforeTS~0 := 0; 200#L896 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 196#L917-1 [2021-10-28 08:45:24,477 INFO L793 eck$LassoCheckResult]: Loop: 196#L917-1 assume !false; 197#L431 assume test_~splverifierCounter~0 < 4; 220#L432 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 221#L440 assume !(0 != test_~tmp~3); 223#L440-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 233#L450 assume !(0 != test_~tmp___0~0); 235#L450-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 257#L460 assume 0 != test_~tmp___2~0; 213#L466-2 havoc __utac_acc__Specification5_spec__2_#t~ret77;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 214#L590 __utac_acc__Specification5_spec__2_#t~ret77 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret77;havoc __utac_acc__Specification5_spec__2_#t~ret77; 243#L906 assume !(0 != ~pumpRunning~0); 242#L505 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret46, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 215#L537 assume !(0 == ~pumpRunning~0); 211#L512 havoc __utac_acc__Specification5_spec__3_#t~ret78, __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 212#L871 __utac_acc__Specification5_spec__3_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret78;havoc __utac_acc__Specification5_spec__3_#t~ret78; 240#L917 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 196#L917-1 [2021-10-28 08:45:24,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:24,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-28 08:45:24,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:24,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775895887] [2021-10-28 08:45:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:24,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:24,586 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:45:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:24,686 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:45:24,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:24,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1401702333, now seen corresponding path program 1 times [2021-10-28 08:45:24,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:24,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484511422] [2021-10-28 08:45:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:24,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:24,724 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 08:45:24,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:24,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484511422] [2021-10-28 08:45:24,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484511422] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:24,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:24,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:45:24,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923248468] [2021-10-28 08:45:24,727 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:45:24,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:24,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:45:24,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:45:24,729 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. cyclomatic complexity: 33 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 08:45:24,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:24,830 INFO L93 Difference]: Finished difference Result 126 states and 170 transitions. [2021-10-28 08:45:24,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:45:24,832 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 170 transitions. [2021-10-28 08:45:24,835 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 88 [2021-10-28 08:45:24,837 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 126 states and 170 transitions. [2021-10-28 08:45:24,838 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 126 [2021-10-28 08:45:24,839 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 126 [2021-10-28 08:45:24,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 170 transitions. [2021-10-28 08:45:24,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:45:24,841 INFO L681 BuchiCegarLoop]: Abstraction has 126 states and 170 transitions. [2021-10-28 08:45:24,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 170 transitions. [2021-10-28 08:45:24,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-28 08:45:24,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 126 states have (on average 1.3492063492063493) internal successors, (170), 125 states have internal predecessors, (170), 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 08:45:24,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 170 transitions. [2021-10-28 08:45:24,854 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 170 transitions. [2021-10-28 08:45:24,854 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 170 transitions. [2021-10-28 08:45:24,854 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 08:45:24,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 170 transitions. [2021-10-28 08:45:24,856 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 88 [2021-10-28 08:45:24,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:45:24,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:45:24,858 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:24,858 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 08:45:24,859 INFO L791 eck$LassoCheckResult]: Stem: 474#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(110, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(102, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(102, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 3 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string55.base, #t~string55.offset, 1);call write~init~int(80, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(117, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(109, #t~string55.base, 3 + #t~string55.offset, 1);call write~init~int(112, #t~string55.base, 4 + #t~string55.offset, 1);call write~init~int(58, #t~string55.base, 5 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 6 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(110, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 3 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string61.base, #t~string61.offset, 1);call write~init~int(32, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string63.base, #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 1 + #t~string63.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0; 466#L-1 havoc main_#res;havoc main_#t~ret66, main_~retValue_acc~8, main_~tmp~6;havoc main_~retValue_acc~8;havoc main_~tmp~6; 467#L675 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 415#L683 main_#t~ret66 := valid_product_#res;main_~tmp~6 := main_#t~ret66;havoc main_#t~ret66; 402#L772 assume 0 != main_~tmp~6; 403#L747 ~switchedOnBeforeTS~0 := 0; 410#L896 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 404#L917-1 [2021-10-28 08:45:24,859 INFO L793 eck$LassoCheckResult]: Loop: 404#L917-1 assume !false; 405#L431 assume test_~splverifierCounter~0 < 4; 433#L432 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 434#L440 assume !(0 != test_~tmp~3); 436#L440-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 442#L450 assume !(0 != test_~tmp___0~0); 449#L450-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 471#L460 assume 0 != test_~tmp___2~0; 425#L466-2 havoc __utac_acc__Specification5_spec__2_#t~ret77;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 426#L590 __utac_acc__Specification5_spec__2_#t~ret77 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret77;havoc __utac_acc__Specification5_spec__2_#t~ret77; 458#L906 assume !(0 != ~pumpRunning~0); 457#L505 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret46, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 427#L537 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret64, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 428#L879 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 437#L884 isHighWaterLevel_#t~ret64 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret64;havoc isHighWaterLevel_#t~ret64; 443#L639 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 450#L639-2 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 451#L645 processEnvironment_#t~ret46 := isHighWaterLevel_#res;processEnvironment_~tmp~4 := processEnvironment_#t~ret46;havoc processEnvironment_#t~ret46; 421#L541 assume !(0 != processEnvironment_~tmp~4); 423#L512 havoc __utac_acc__Specification5_spec__3_#t~ret78, __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 424#L871 __utac_acc__Specification5_spec__3_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret78;havoc __utac_acc__Specification5_spec__3_#t~ret78; 455#L917 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 404#L917-1 [2021-10-28 08:45:24,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:24,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-28 08:45:24,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:24,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600788501] [2021-10-28 08:45:24,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:24,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:24,921 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:45:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:25,039 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:45:25,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:25,040 INFO L85 PathProgramCache]: Analyzing trace with hash 393719183, now seen corresponding path program 1 times [2021-10-28 08:45:25,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:25,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731191148] [2021-10-28 08:45:25,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:25,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:25,088 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 08:45:25,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:25,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731191148] [2021-10-28 08:45:25,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731191148] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:25,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:25,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:45:25,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97965535] [2021-10-28 08:45:25,090 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:45:25,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:25,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:45:25,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:45:25,092 INFO L87 Difference]: Start difference. First operand 126 states and 170 transitions. cyclomatic complexity: 46 Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:45:25,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:25,345 INFO L93 Difference]: Finished difference Result 466 states and 633 transitions. [2021-10-28 08:45:25,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:45:25,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 466 states and 633 transitions. [2021-10-28 08:45:25,388 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 325 [2021-10-28 08:45:25,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 466 states to 466 states and 633 transitions. [2021-10-28 08:45:25,395 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 466 [2021-10-28 08:45:25,397 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 466 [2021-10-28 08:45:25,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 466 states and 633 transitions. [2021-10-28 08:45:25,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:45:25,413 INFO L681 BuchiCegarLoop]: Abstraction has 466 states and 633 transitions. [2021-10-28 08:45:25,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states and 633 transitions. [2021-10-28 08:45:25,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 242. [2021-10-28 08:45:25,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 242 states have (on average 1.3264462809917354) internal successors, (321), 241 states have internal predecessors, (321), 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 08:45:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2021-10-28 08:45:25,445 INFO L704 BuchiCegarLoop]: Abstraction has 242 states and 321 transitions. [2021-10-28 08:45:25,445 INFO L587 BuchiCegarLoop]: Abstraction has 242 states and 321 transitions. [2021-10-28 08:45:25,445 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 08:45:25,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 242 states and 321 transitions. [2021-10-28 08:45:25,448 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 174 [2021-10-28 08:45:25,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:45:25,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:45:25,449 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:25,449 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 08:45:25,449 INFO L791 eck$LassoCheckResult]: Stem: 1098#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(110, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(102, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(102, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 3 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string55.base, #t~string55.offset, 1);call write~init~int(80, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(117, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(109, #t~string55.base, 3 + #t~string55.offset, 1);call write~init~int(112, #t~string55.base, 4 + #t~string55.offset, 1);call write~init~int(58, #t~string55.base, 5 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 6 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(110, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 3 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string61.base, #t~string61.offset, 1);call write~init~int(32, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string63.base, #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 1 + #t~string63.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0; 1086#L-1 havoc main_#res;havoc main_#t~ret66, main_~retValue_acc~8, main_~tmp~6;havoc main_~retValue_acc~8;havoc main_~tmp~6; 1087#L675 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 1027#L683 main_#t~ret66 := valid_product_#res;main_~tmp~6 := main_#t~ret66;havoc main_#t~ret66; 1013#L772 assume 0 != main_~tmp~6; 1014#L747 ~switchedOnBeforeTS~0 := 0; 1021#L896 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1015#L917-1 [2021-10-28 08:45:25,450 INFO L793 eck$LassoCheckResult]: Loop: 1015#L917-1 assume !false; 1016#L431 assume test_~splverifierCounter~0 < 4; 1106#L432 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 1240#L440 assume !(0 != test_~tmp~3); 1238#L440-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 1237#L450 assume !(0 != test_~tmp___0~0); 1235#L450-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 1234#L460 assume 0 != test_~tmp___2~0; 1232#L466-2 havoc __utac_acc__Specification5_spec__2_#t~ret77;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 1231#L590 __utac_acc__Specification5_spec__2_#t~ret77 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret77;havoc __utac_acc__Specification5_spec__2_#t~ret77; 1219#L906 assume !(0 != ~pumpRunning~0); 1075#L505 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret46, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 1039#L537 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret64, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 1040#L879 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 1050#L884 isHighWaterLevel_#t~ret64 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret64;havoc isHighWaterLevel_#t~ret64; 1080#L639 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 1065#L639-2 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1066#L645 processEnvironment_#t~ret46 := isHighWaterLevel_#res;processEnvironment_~tmp~4 := processEnvironment_#t~ret46;havoc processEnvironment_#t~ret46; 1033#L541 assume !(0 != processEnvironment_~tmp~4); 1035#L512 havoc __utac_acc__Specification5_spec__3_#t~ret78, __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 1036#L871 __utac_acc__Specification5_spec__3_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret78;havoc __utac_acc__Specification5_spec__3_#t~ret78; 1090#L917 assume 2 != __utac_acc__Specification5_spec__3_~tmp~7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 1091#L590-1 __utac_acc__Specification5_spec__3_#t~ret79 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 1092#L921 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 1015#L917-1 [2021-10-28 08:45:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:25,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-28 08:45:25,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:25,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847695860] [2021-10-28 08:45:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:25,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:25,484 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:45:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:25,529 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:45:25,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:25,530 INFO L85 PathProgramCache]: Analyzing trace with hash 406998826, now seen corresponding path program 1 times [2021-10-28 08:45:25,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:25,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026659350] [2021-10-28 08:45:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:25,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:25,538 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:45:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:25,549 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:45:25,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:25,550 INFO L85 PathProgramCache]: Analyzing trace with hash 266405488, now seen corresponding path program 1 times [2021-10-28 08:45:25,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:25,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237746993] [2021-10-28 08:45:25,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:25,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:25,586 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:45:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:25,677 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:46:41,446 WARN L207 SmtUtils]: Spent 1.25 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-28 08:47:58,845 WARN L207 SmtUtils]: Spent 37.22 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-28 08:47:59,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 08:47:59 BoogieIcfgContainer [2021-10-28 08:47:59,048 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 08:47:59,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:47:59,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:47:59,050 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:47:59,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:45:22" (3/4) ... [2021-10-28 08:47:59,053 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 08:47:59,116 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:47:59,116 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:47:59,118 INFO L168 Benchmark]: Toolchain (without parser) took 158329.44 ms. Allocated memory was 88.1 MB in the beginning and 159.4 MB in the end (delta: 71.3 MB). Free memory was 65.5 MB in the beginning and 104.9 MB in the end (delta: -39.5 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:59,118 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 63.7 MB in the beginning and 63.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:47:59,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.15 ms. Allocated memory is still 88.1 MB. Free memory was 65.2 MB in the beginning and 55.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:59,119 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.73 ms. Allocated memory is still 88.1 MB. Free memory was 55.7 MB in the beginning and 52.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:59,120 INFO L168 Benchmark]: Boogie Preprocessor took 79.84 ms. Allocated memory is still 88.1 MB. Free memory was 52.7 MB in the beginning and 50.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:59,121 INFO L168 Benchmark]: RCFGBuilder took 1162.52 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 50.6 MB in the beginning and 64.8 MB in the end (delta: -14.3 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:59,121 INFO L168 Benchmark]: BuchiAutomizer took 156270.30 ms. Allocated memory was 121.6 MB in the beginning and 159.4 MB in the end (delta: 37.7 MB). Free memory was 64.8 MB in the beginning and 107.9 MB in the end (delta: -43.1 MB). Peak memory consumption was 70.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:59,122 INFO L168 Benchmark]: Witness Printer took 67.12 ms. Allocated memory is still 159.4 MB. Free memory was 107.9 MB in the beginning and 104.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:59,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 63.7 MB in the beginning and 63.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 640.15 ms. Allocated memory is still 88.1 MB. Free memory was 65.2 MB in the beginning and 55.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.73 ms. Allocated memory is still 88.1 MB. Free memory was 55.7 MB in the beginning and 52.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.84 ms. Allocated memory is still 88.1 MB. Free memory was 52.7 MB in the beginning and 50.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1162.52 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 50.6 MB in the beginning and 64.8 MB in the end (delta: -14.3 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 156270.30 ms. Allocated memory was 121.6 MB in the beginning and 159.4 MB in the end (delta: 37.7 MB). Free memory was 64.8 MB in the beginning and 107.9 MB in the end (delta: -43.1 MB). Peak memory consumption was 70.0 MB. Max. memory is 16.1 GB. * Witness Printer took 67.12 ms. Allocated memory is still 159.4 MB. Free memory was 107.9 MB in the beginning and 104.9 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 242 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 156.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 155.1s. Construction of modules took 0.4s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 224 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 242 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 387 SDtfs, 971 SDslu, 497 SDs, 0 SdLazy, 131 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 430]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=17198} State at position 1 is {NULL=0, NULL=17221, NULL=0, retValue_acc=1, NULL=17198, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@345c93ad=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66b14f29=62, methaneLevelCritical=0, retValue_acc=0, tmp=0, NULL=0, NULL=17212, tmp___1=0, NULL=17211, NULL=0, NULL=17228, NULL=17220, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c7a6ef5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71d9ee3d=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ad6e150=0, waterLevel=1, NULL=0, NULL=0, NULL=0, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=17201, NULL=17208, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5c6c1381=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40a6d9a6=0, NULL=0, tmp=1, \result=1, NULL=17207, NULL=0, NULL=0, NULL=0, tmp=1, NULL=17218, NULL=17200, NULL=17205, NULL=17206, head=0, tmp=0, NULL=0, NULL=0, NULL=17217, NULL=0, NULL=0, NULL=0, NULL=17203, NULL=17224, retValue_acc=0, NULL=17202, NULL=17210, tmp=1, tmp___0=0, NULL=0, NULL=17213, NULL=17225, switchedOnBeforeTS=0, NULL=17215, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c4f2a38=0, \result=0, NULL=17222, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d3b230e=0, \result=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d09e75f=0, NULL=17223, tmp___0=0, NULL=17199, \result=0, NULL=0, NULL=17219, retValue_acc=1, NULL=17214, tmp___2=62, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, NULL=17216, NULL=17209, NULL=17204, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L493] int pumpRunning = 0; [L494] int systemActive = 1; [L688] int cleanupTimeShifts = 4; [L796] int waterLevel = 1; [L797] int methaneLevelCritical = 0; [L890] int switchedOnBeforeTS ; [L763] int retValue_acc ; [L764] int tmp ; [L679] int retValue_acc ; [L682] retValue_acc = 1 [L683] return (retValue_acc); [L770] tmp = valid_product() [L772] COND TRUE \read(tmp) [L895] switchedOnBeforeTS = 0 [L421] int splverifierCounter ; [L422] int tmp ; [L423] int tmp___0 ; [L424] int tmp___1 ; [L425] int tmp___2 ; [L428] splverifierCounter = 0 Loop: [L430] COND TRUE 1 [L432] COND TRUE splverifierCounter < 4 [L438] tmp = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp)) [L448] tmp___0 = __VERIFIER_nondet_int() [L450] COND FALSE !(\read(tmp___0)) [L458] tmp___2 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___2) [L586] int retValue_acc ; [L589] retValue_acc = pumpRunning [L590] return (retValue_acc); [L904] switchedOnBeforeTS = isPumpRunning() [L505] COND FALSE !(\read(pumpRunning)) [L512] COND TRUE \read(systemActive) [L534] int tmp ; [L537] COND TRUE ! pumpRunning [L631] int retValue_acc ; [L632] int tmp ; [L633] int tmp___0 ; [L876] int retValue_acc ; [L879] COND TRUE waterLevel < 2 [L880] retValue_acc = 1 [L881] return (retValue_acc); [L637] tmp = isHighWaterSensorDry() [L639] COND TRUE \read(tmp) [L640] tmp___0 = 0 [L644] retValue_acc = tmp___0 [L645] return (retValue_acc); [L539] tmp = isHighWaterLevel() [L541] COND FALSE !(\read(tmp)) [L910] int tmp ; [L911] int tmp___0 ; [L867] int retValue_acc ; [L870] retValue_acc = waterLevel [L871] return (retValue_acc); [L915] tmp = getWaterLevel() [L917] COND TRUE tmp != 2 [L586] int retValue_acc ; [L589] retValue_acc = pumpRunning [L590] return (retValue_acc); [L919] tmp___0 = isPumpRunning() [L921] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 08:47:59,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bdc41c-898e-434a-a847-86729a219c92/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...