./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product51.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_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/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_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product51.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/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_a337f898-5b09-466e-a0c3-fa472b38b88e/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 1ef39c14b0f41147d1df64069011556a64ce74ff520b071f62407c2225292c50 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:44:52,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:44:52,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:44:52,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:44:52,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:44:52,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:44:52,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:44:52,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:44:52,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:44:52,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:44:52,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:44:52,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:44:52,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:44:52,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:44:52,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:44:52,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:44:52,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:44:52,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:44:52,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:44:52,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:44:52,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:44:52,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:44:52,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:44:52,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:44:52,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:44:52,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:44:52,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:44:52,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:44:52,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:44:52,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:44:52,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:44:52,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:44:52,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:44:52,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:44:52,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:44:52,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:44:52,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:44:52,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:44:52,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:44:52,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:44:52,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:44:52,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:44:52,518 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:44:52,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:44:52,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:44:52,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:44:52,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:44:52,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:44:52,522 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:44:52,522 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:44:52,522 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:44:52,523 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:44:52,523 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:44:52,523 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:44:52,523 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:44:52,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:44:52,524 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:44:52,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:44:52,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:44:52,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:44:52,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:44:52,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:44:52,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:44:52,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:44:52,526 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:44:52,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:44:52,527 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:44:52,527 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:44:52,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:44:52,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:44:52,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:44:52,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:44:52,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:44:52,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:44:52,530 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:44:52,530 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_a337f898-5b09-466e-a0c3-fa472b38b88e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ef39c14b0f41147d1df64069011556a64ce74ff520b071f62407c2225292c50 [2021-10-28 09:44:52,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:44:52,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:44:52,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:44:52,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:44:52,897 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:44:52,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec5_product51.cil.c [2021-10-28 09:44:52,984 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/data/ee5924806/45a32e315cbf41798672b14d28c42826/FLAGa191be77e [2021-10-28 09:44:53,630 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:44:53,645 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/sv-benchmarks/c/product-lines/minepump_spec5_product51.cil.c [2021-10-28 09:44:53,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/data/ee5924806/45a32e315cbf41798672b14d28c42826/FLAGa191be77e [2021-10-28 09:44:53,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/data/ee5924806/45a32e315cbf41798672b14d28c42826 [2021-10-28 09:44:53,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:44:53,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:44:53,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:44:53,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:44:53,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:44:53,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:44:53" (1/1) ... [2021-10-28 09:44:53,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c99515d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:53, skipping insertion in model container [2021-10-28 09:44:53,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:44:53" (1/1) ... [2021-10-28 09:44:53,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:44:54,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:44:54,403 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_a337f898-5b09-466e-a0c3-fa472b38b88e/sv-benchmarks/c/product-lines/minepump_spec5_product51.cil.c[18485,18498] [2021-10-28 09:44:54,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:44:54,435 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:44:54,561 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_a337f898-5b09-466e-a0c3-fa472b38b88e/sv-benchmarks/c/product-lines/minepump_spec5_product51.cil.c[18485,18498] [2021-10-28 09:44:54,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:44:54,588 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:44:54,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:54 WrapperNode [2021-10-28 09:44:54,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:44:54,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:44:54,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:44:54,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:44:54,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:54" (1/1) ... [2021-10-28 09:44:54,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:54" (1/1) ... [2021-10-28 09:44:54,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:44:54,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:44:54,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:44:54,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:44:54,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:54" (1/1) ... [2021-10-28 09:44:54,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:54" (1/1) ... [2021-10-28 09:44:54,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:54" (1/1) ... [2021-10-28 09:44:54,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:54" (1/1) ... [2021-10-28 09:44:54,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:54" (1/1) ... [2021-10-28 09:44:54,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:54" (1/1) ... [2021-10-28 09:44:54,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:54" (1/1) ... [2021-10-28 09:44:54,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:44:54,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:44:54,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:44:54,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:44:54,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:54" (1/1) ... [2021-10-28 09:44:54,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:44:54,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:44:54,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:44:54,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:44:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:44:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:44:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:44:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:44:56,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:44:56,315 INFO L299 CfgBuilder]: Removed 174 assume(true) statements. [2021-10-28 09:44:56,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:44:56 BoogieIcfgContainer [2021-10-28 09:44:56,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:44:56,324 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:44:56,324 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:44:56,331 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:44:56,332 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:44:56,333 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:44:53" (1/3) ... [2021-10-28 09:44:56,335 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3201d058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:44:56, skipping insertion in model container [2021-10-28 09:44:56,336 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:44:56,336 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:54" (2/3) ... [2021-10-28 09:44:56,337 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3201d058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:44:56, skipping insertion in model container [2021-10-28 09:44:56,338 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:44:56,338 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:44:56" (3/3) ... [2021-10-28 09:44:56,340 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product51.cil.c [2021-10-28 09:44:56,416 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:44:56,417 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:44:56,417 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:44:56,417 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:44:56,418 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:44:56,418 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:44:56,418 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:44:56,418 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:44:56,444 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 125 states, 124 states have (on average 1.5241935483870968) internal successors, (189), 124 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:56,482 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-10-28 09:44:56,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:44:56,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:44:56,494 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:56,494 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:56,494 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:44:56,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 125 states, 124 states have (on average 1.5241935483870968) internal successors, (189), 124 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:56,508 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-10-28 09:44:56,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:44:56,508 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:44:56,510 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:56,510 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:56,517 INFO L791 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0; 41#L-1true havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~4, main_~tmp~4;havoc main_~retValue_acc~4;havoc main_~tmp~4; 28#L471true havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 65#L479true main_#t~ret28 := valid_product_#res;main_~tmp~4 := main_#t~ret28;havoc main_#t~ret28; 103#L368true assume 0 != main_~tmp~4; 123#L339true ~switchedOnBeforeTS~0 := 0; 17#L969true havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 66#L990-1true [2021-10-28 09:44:56,521 INFO L793 eck$LassoCheckResult]: Loop: 66#L990-1true assume !false; 19#L393true assume test_~splverifierCounter~0 < 4; 15#L394true test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 80#L402true assume !(0 != test_~tmp~5); 5#L402-1true test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 56#L412true assume !(0 != test_~tmp___0~2); 81#L412-1true test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 18#L422true assume 0 != test_~tmp___2~0; 73#L428-1true havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 77#L184true __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 110#L979true assume !(0 != ~pumpRunning~0); 93#L73true assume !(0 != ~systemActive~0); 7#L80true havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 89#L926true __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 86#L990true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 66#L990-1true [2021-10-28 09:44:56,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-28 09:44:56,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:56,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798034747] [2021-10-28 09:44:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:56,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:56,864 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:57,132 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:57,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:57,151 INFO L85 PathProgramCache]: Analyzing trace with hash -240044843, now seen corresponding path program 1 times [2021-10-28 09:44:57,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:57,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800212696] [2021-10-28 09:44:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:57,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:57,166 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:57,196 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:57,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:57,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1693980367, now seen corresponding path program 1 times [2021-10-28 09:44:57,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:57,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113870225] [2021-10-28 09:44:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:57,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:44:57,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:57,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113870225] [2021-10-28 09:44:57,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113870225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:44:57,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:44:57,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:44:57,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174446265] [2021-10-28 09:44:57,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:44:57,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:44:57,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:44:57,762 INFO L87 Difference]: Start difference. First operand has 125 states, 124 states have (on average 1.5241935483870968) internal successors, (189), 124 states have internal predecessors, (189), 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 09:44:58,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:58,219 INFO L93 Difference]: Finished difference Result 301 states and 430 transitions. [2021-10-28 09:44:58,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:44:58,223 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 301 states and 430 transitions. [2021-10-28 09:44:58,238 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 195 [2021-10-28 09:44:58,260 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 301 states to 280 states and 409 transitions. [2021-10-28 09:44:58,261 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 280 [2021-10-28 09:44:58,263 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 280 [2021-10-28 09:44:58,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 280 states and 409 transitions. [2021-10-28 09:44:58,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:44:58,278 INFO L681 BuchiCegarLoop]: Abstraction has 280 states and 409 transitions. [2021-10-28 09:44:58,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states and 409 transitions. [2021-10-28 09:44:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 167. [2021-10-28 09:44:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 167 states have (on average 1.4491017964071857) internal successors, (242), 166 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 242 transitions. [2021-10-28 09:44:58,361 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 242 transitions. [2021-10-28 09:44:58,361 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 242 transitions. [2021-10-28 09:44:58,361 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:44:58,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 242 transitions. [2021-10-28 09:44:58,367 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 116 [2021-10-28 09:44:58,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:44:58,378 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:44:58,379 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:58,379 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:58,380 INFO L791 eck$LassoCheckResult]: Stem: 562#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0; 508#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~4, main_~tmp~4;havoc main_~retValue_acc~4;havoc main_~tmp~4; 487#L471 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 488#L479 main_#t~ret28 := valid_product_#res;main_~tmp~4 := main_#t~ret28;havoc main_#t~ret28; 535#L368 assume 0 != main_~tmp~4; 558#L339 ~switchedOnBeforeTS~0 := 0; 468#L969 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 469#L990-1 [2021-10-28 09:44:58,380 INFO L793 eck$LassoCheckResult]: Loop: 469#L990-1 assume !false; 473#L393 assume test_~splverifierCounter~0 < 4; 464#L394 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 465#L402 assume !(0 != test_~tmp~5); 446#L402-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 447#L412 assume !(0 != test_~tmp___0~2); 526#L412-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 470#L422 assume 0 != test_~tmp___2~0; 472#L428-1 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 540#L184 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 545#L979 assume !(0 != ~pumpRunning~0); 555#L73 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 512#L131 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 513#L105-1 assume !(0 == ~pumpRunning~0); 450#L80 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 451#L926 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 549#L990 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 469#L990-1 [2021-10-28 09:44:58,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:58,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-28 09:44:58,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:58,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725359821] [2021-10-28 09:44:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:58,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:58,449 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:58,602 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:58,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:58,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1395551213, now seen corresponding path program 1 times [2021-10-28 09:44:58,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:58,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820185688] [2021-10-28 09:44:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:58,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:44:58,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:58,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820185688] [2021-10-28 09:44:58,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820185688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:44:58,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:44:58,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:44:58,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282322714] [2021-10-28 09:44:58,664 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:44:58,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:44:58,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:44:58,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:44:58,672 INFO L87 Difference]: Start difference. First operand 167 states and 242 transitions. cyclomatic complexity: 78 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:58,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:58,848 INFO L93 Difference]: Finished difference Result 214 states and 293 transitions. [2021-10-28 09:44:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:44:58,851 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 214 states and 293 transitions. [2021-10-28 09:44:58,858 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-10-28 09:44:58,861 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 214 states to 214 states and 293 transitions. [2021-10-28 09:44:58,862 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 214 [2021-10-28 09:44:58,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 214 [2021-10-28 09:44:58,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 214 states and 293 transitions. [2021-10-28 09:44:58,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:44:58,868 INFO L681 BuchiCegarLoop]: Abstraction has 214 states and 293 transitions. [2021-10-28 09:44:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states and 293 transitions. [2021-10-28 09:44:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-10-28 09:44:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.3691588785046729) internal successors, (293), 213 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 293 transitions. [2021-10-28 09:44:58,891 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 293 transitions. [2021-10-28 09:44:58,892 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 293 transitions. [2021-10-28 09:44:58,892 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:44:58,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 293 transitions. [2021-10-28 09:44:58,895 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-10-28 09:44:58,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:44:58,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:44:58,897 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:58,897 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:58,897 INFO L791 eck$LassoCheckResult]: Stem: 959#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0; 899#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~4, main_~tmp~4;havoc main_~retValue_acc~4;havoc main_~tmp~4; 877#L471 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 878#L479 main_#t~ret28 := valid_product_#res;main_~tmp~4 := main_#t~ret28;havoc main_#t~ret28; 926#L368 assume 0 != main_~tmp~4; 953#L339 ~switchedOnBeforeTS~0 := 0; 857#L969 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 858#L990-1 [2021-10-28 09:44:58,898 INFO L793 eck$LassoCheckResult]: Loop: 858#L990-1 assume !false; 862#L393 assume test_~splverifierCounter~0 < 4; 853#L394 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 854#L402 assume !(0 != test_~tmp~5); 834#L402-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 835#L412 assume !(0 != test_~tmp___0~2); 917#L412-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 859#L422 assume 0 != test_~tmp___2~0; 861#L428-1 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 931#L184 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 936#L979 assume !(0 != ~pumpRunning~0); 947#L73 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 903#L131 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 904#L105-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 923#L934-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 868#L939-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 869#L233-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 895#L233-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 870#L239-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 871#L109-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 952#L80 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 1013#L926 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 940#L990 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 858#L990-1 [2021-10-28 09:44:58,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:58,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-28 09:44:58,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:58,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367465139] [2021-10-28 09:44:58,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:58,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:58,996 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:59,082 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:59,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:59,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1667768609, now seen corresponding path program 1 times [2021-10-28 09:44:59,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:59,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144884994] [2021-10-28 09:44:59,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:59,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:44:59,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:59,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144884994] [2021-10-28 09:44:59,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144884994] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:44:59,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:44:59,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:44:59,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992962002] [2021-10-28 09:44:59,155 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:44:59,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:44:59,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:44:59,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:44:59,157 INFO L87 Difference]: Start difference. First operand 214 states and 293 transitions. cyclomatic complexity: 82 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:59,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:59,495 INFO L93 Difference]: Finished difference Result 853 states and 1177 transitions. [2021-10-28 09:44:59,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:44:59,498 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 853 states and 1177 transitions. [2021-10-28 09:44:59,512 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 599 [2021-10-28 09:44:59,522 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 853 states to 853 states and 1177 transitions. [2021-10-28 09:44:59,523 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 853 [2021-10-28 09:44:59,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 853 [2021-10-28 09:44:59,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 853 states and 1177 transitions. [2021-10-28 09:44:59,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:44:59,527 INFO L681 BuchiCegarLoop]: Abstraction has 853 states and 1177 transitions. [2021-10-28 09:44:59,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states and 1177 transitions. [2021-10-28 09:44:59,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 418. [2021-10-28 09:44:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 418 states have (on average 1.3492822966507176) internal successors, (564), 417 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 564 transitions. [2021-10-28 09:44:59,562 INFO L704 BuchiCegarLoop]: Abstraction has 418 states and 564 transitions. [2021-10-28 09:44:59,563 INFO L587 BuchiCegarLoop]: Abstraction has 418 states and 564 transitions. [2021-10-28 09:44:59,563 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:44:59,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 418 states and 564 transitions. [2021-10-28 09:44:59,567 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 302 [2021-10-28 09:44:59,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:44:59,568 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:44:59,572 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:59,572 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:59,573 INFO L791 eck$LassoCheckResult]: Stem: 2077#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0; 1989#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~4, main_~tmp~4;havoc main_~retValue_acc~4;havoc main_~tmp~4; 1966#L471 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 1967#L479 main_#t~ret28 := valid_product_#res;main_~tmp~4 := main_#t~ret28;havoc main_#t~ret28; 2021#L368 assume 0 != main_~tmp~4; 2064#L339 ~switchedOnBeforeTS~0 := 0; 1944#L969 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1945#L990-1 [2021-10-28 09:44:59,573 INFO L793 eck$LassoCheckResult]: Loop: 1945#L990-1 assume !false; 2273#L393 assume test_~splverifierCounter~0 < 4; 2274#L394 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 2314#L402 assume !(0 != test_~tmp~5); 2311#L402-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 2309#L412 assume !(0 != test_~tmp___0~2); 2304#L412-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 2303#L422 assume 0 != test_~tmp___2~0; 2302#L428-1 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2310#L184 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 2305#L979 assume !(0 != ~pumpRunning~0); 2235#L73 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 2234#L131 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 2017#L105-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 2018#L934-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1957#L939-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 1958#L233-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 1985#L233-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1959#L239-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 1960#L109-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 2063#L80 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 2290#L926 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 2289#L990 assume 2 != __utac_acc__Specification5_spec__3_~tmp~9;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2288#L184-1 __utac_acc__Specification5_spec__3_#t~ret81 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret81;havoc __utac_acc__Specification5_spec__3_#t~ret81; 2287#L994 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 1945#L990-1 [2021-10-28 09:44:59,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:59,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-28 09:44:59,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:59,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962263406] [2021-10-28 09:44:59,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:59,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:59,654 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:59,714 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:59,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:59,715 INFO L85 PathProgramCache]: Analyzing trace with hash -702843718, now seen corresponding path program 1 times [2021-10-28 09:44:59,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:59,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749662037] [2021-10-28 09:44:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:59,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:59,729 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:59,752 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:59,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:59,753 INFO L85 PathProgramCache]: Analyzing trace with hash -766269900, now seen corresponding path program 1 times [2021-10-28 09:44:59,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:59,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162237976] [2021-10-28 09:44:59,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:59,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:59,839 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:59,923 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:46:20,095 WARN L207 SmtUtils]: Spent 1.33 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-28 09:47:45,589 WARN L207 SmtUtils]: Spent 42.04 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-28 09:47:45,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:47:45 BoogieIcfgContainer [2021-10-28 09:47:45,827 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:47:45,828 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:47:45,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:47:45,829 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:47:45,830 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:44:56" (3/4) ... [2021-10-28 09:47:45,833 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:47:45,905 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:47:45,905 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:47:45,907 INFO L168 Benchmark]: Toolchain (without parser) took 172014.12 ms. Allocated memory was 100.7 MB in the beginning and 169.9 MB in the end (delta: 69.2 MB). Free memory was 58.9 MB in the beginning and 51.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 74.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:45,907 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 100.7 MB. Free memory is still 76.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:47:45,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.96 ms. Allocated memory is still 100.7 MB. Free memory was 58.6 MB in the beginning and 67.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:45,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 142.09 ms. Allocated memory is still 100.7 MB. Free memory was 67.6 MB in the beginning and 63.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:45,910 INFO L168 Benchmark]: Boogie Preprocessor took 86.06 ms. Allocated memory is still 100.7 MB. Free memory was 63.9 MB in the beginning and 61.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:45,911 INFO L168 Benchmark]: RCFGBuilder took 1501.83 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 61.3 MB in the beginning and 84.5 MB in the end (delta: -23.3 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:45,911 INFO L168 Benchmark]: BuchiAutomizer took 169504.10 ms. Allocated memory was 123.7 MB in the beginning and 169.9 MB in the end (delta: 46.1 MB). Free memory was 84.5 MB in the beginning and 54.1 MB in the end (delta: 30.4 MB). Peak memory consumption was 98.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:45,912 INFO L168 Benchmark]: Witness Printer took 76.98 ms. Allocated memory is still 169.9 MB. Free memory was 54.1 MB in the beginning and 51.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:45,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 100.7 MB. Free memory is still 76.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 694.96 ms. Allocated memory is still 100.7 MB. Free memory was 58.6 MB in the beginning and 67.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 142.09 ms. Allocated memory is still 100.7 MB. Free memory was 67.6 MB in the beginning and 63.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.06 ms. Allocated memory is still 100.7 MB. Free memory was 63.9 MB in the beginning and 61.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1501.83 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 61.3 MB in the beginning and 84.5 MB in the end (delta: -23.3 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 169504.10 ms. Allocated memory was 123.7 MB in the beginning and 169.9 MB in the end (delta: 46.1 MB). Free memory was 84.5 MB in the beginning and 54.1 MB in the end (delta: 30.4 MB). Peak memory consumption was 98.5 MB. Max. memory is 16.1 GB. * Witness Printer took 76.98 ms. Allocated memory is still 169.9 MB. Free memory was 54.1 MB in the beginning and 51.2 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 418 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 169.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 167.9s. Construction of modules took 0.6s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 548 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 418 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 626 SDtfs, 1737 SDslu, 1609 SDs, 0 SdLazy, 225 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s 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: 392]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=27693} State at position 1 is {retValue_acc=1, NULL=0, NULL=0, NULL=45148, NULL=0, NULL=27693, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34c6f01f=0, NULL=45146, NULL=45140, methaneLevelCritical=0, tmp=0, retValue_acc=0, tmp___1=0, NULL=45150, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21112f7f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@520d5069=0, cleanupTimeShifts=4, NULL=45145, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@99cd39e=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24cb09bb=0, head=0, pumpRunning=0, NULL=45137, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f6544e1=0, NULL=45131, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72c8f72f=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@682dd093=50, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41a0f1af=0, NULL=0, NULL=45142, NULL=0, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f1afb3f=0, NULL=0, tmp___0=0, NULL=45126, tmp=0, head=0, NULL=45138, NULL=45147, NULL=45136, NULL=0, retValue_acc=0, NULL=0, NULL=45143, NULL=45133, NULL=27695, tmp=1, tmp___0=0, NULL=0, NULL=45135, NULL=0, NULL=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@216e3d6a=0, switchedOnBeforeTS=0, NULL=45128, \result=0, NULL=45129, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=45149, \result=0, NULL=45127, tmp___0=0, NULL=45144, NULL=0, NULL=45130, NULL=0, NULL=0, retValue_acc=1, NULL=45134, retValue_acc=1, tmp___2=50, splverifierCounter=0, NULL=0, NULL=27694, NULL=45132, retValue_acc=0, NULL=45141, NULL=0, NULL=0, NULL=45139, NULL=45125} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L61] int pumpRunning = 0; [L62] int systemActive = 1; [L278] int cleanupTimeShifts = 4; [L653] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L851] int waterLevel = 1; [L852] int methaneLevelCritical = 0; [L963] int switchedOnBeforeTS ; [L359] int retValue_acc ; [L360] int tmp ; [L475] int retValue_acc ; [L478] retValue_acc = 1 [L479] return (retValue_acc); [L366] tmp = valid_product() [L368] COND TRUE \read(tmp) [L968] switchedOnBeforeTS = 0 [L383] int splverifierCounter ; [L384] int tmp ; [L385] int tmp___0 ; [L386] int tmp___1 ; [L387] int tmp___2 ; [L390] splverifierCounter = 0 Loop: [L392] COND TRUE 1 [L394] COND TRUE splverifierCounter < 4 [L400] tmp = __VERIFIER_nondet_int() [L402] COND FALSE !(\read(tmp)) [L410] tmp___0 = __VERIFIER_nondet_int() [L412] COND FALSE !(\read(tmp___0)) [L420] tmp___2 = __VERIFIER_nondet_int() [L422] COND TRUE \read(tmp___2) [L180] int retValue_acc ; [L183] retValue_acc = pumpRunning [L184] return (retValue_acc); [L977] switchedOnBeforeTS = isPumpRunning() [L73] COND FALSE !(\read(pumpRunning)) [L80] COND TRUE \read(systemActive) [L128] int tmp ; [L131] COND FALSE !(\read(pumpRunning)) [L102] int tmp ; [L105] COND TRUE ! pumpRunning [L225] int retValue_acc ; [L226] int tmp ; [L227] int tmp___0 ; [L931] int retValue_acc ; [L934] COND TRUE waterLevel < 2 [L935] retValue_acc = 1 [L936] return (retValue_acc); [L231] tmp = isHighWaterSensorDry() [L233] COND TRUE \read(tmp) [L234] tmp___0 = 0 [L238] retValue_acc = tmp___0 [L239] return (retValue_acc); [L107] tmp = isHighWaterLevel() [L109] COND FALSE !(\read(tmp)) [L983] int tmp ; [L984] int tmp___0 ; [L922] int retValue_acc ; [L925] retValue_acc = waterLevel [L926] return (retValue_acc); [L988] tmp = getWaterLevel() [L990] COND TRUE tmp != 2 [L180] int retValue_acc ; [L183] retValue_acc = pumpRunning [L184] return (retValue_acc); [L992] tmp___0 = isPumpRunning() [L994] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:47:45,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a337f898-5b09-466e-a0c3-fa472b38b88e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...