./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7448e2a4dcf9053e3462616ae6225740bd78f5c7802032dea6a738b62c6fd6a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:27:55,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:27:55,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:27:55,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:27:55,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:27:55,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:27:55,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:27:55,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:27:55,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:27:55,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:27:55,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:27:55,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:27:55,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:27:55,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:27:55,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:27:55,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:27:55,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:27:55,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:27:55,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:27:55,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:27:55,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:27:55,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:27:55,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:27:55,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:27:55,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:27:55,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:27:55,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:27:55,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:27:55,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:27:55,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:27:55,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:27:55,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:27:55,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:27:55,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:27:55,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:27:55,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:27:55,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:27:55,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:27:55,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:27:55,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:27:55,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:27:55,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:27:55,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:27:55,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:27:55,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:27:55,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:27:55,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:27:55,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:27:55,933 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:27:55,934 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:27:55,934 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:27:55,934 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:27:55,935 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:27:55,936 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:27:55,936 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:27:55,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:27:55,936 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:27:55,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:27:55,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:27:55,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:27:55,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:27:55,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:27:55,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:27:55,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:27:55,938 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:27:55,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:27:55,939 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:27:55,939 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:27:55,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:27:55,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:27:55,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:27:55,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:27:55,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:27:55,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:27:55,944 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:27:55,944 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_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7448e2a4dcf9053e3462616ae6225740bd78f5c7802032dea6a738b62c6fd6a [2021-10-21 19:27:56,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:27:56,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:27:56,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:27:56,307 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:27:56,310 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:27:56,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec3_product35.cil.c [2021-10-21 19:27:56,375 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/data/5750905f8/6c49acd8a04e4f0ba2206b2ebbc5f7cb/FLAG457c09233 [2021-10-21 19:27:57,127 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:27:57,128 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/sv-benchmarks/c/product-lines/minepump_spec3_product35.cil.c [2021-10-21 19:27:57,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/data/5750905f8/6c49acd8a04e4f0ba2206b2ebbc5f7cb/FLAG457c09233 [2021-10-21 19:27:57,364 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/data/5750905f8/6c49acd8a04e4f0ba2206b2ebbc5f7cb [2021-10-21 19:27:57,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:27:57,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:27:57,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:27:57,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:27:57,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:27:57,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:27:57" (1/1) ... [2021-10-21 19:27:57,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41fbbdfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:57, skipping insertion in model container [2021-10-21 19:27:57,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:27:57" (1/1) ... [2021-10-21 19:27:57,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:27:57,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:27:57,777 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_74b2f3b8-3311-413d-8489-4def8932ff6d/sv-benchmarks/c/product-lines/minepump_spec3_product35.cil.c[8262,8275] [2021-10-21 19:27:57,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:27:57,886 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:27:57,980 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_74b2f3b8-3311-413d-8489-4def8932ff6d/sv-benchmarks/c/product-lines/minepump_spec3_product35.cil.c[8262,8275] [2021-10-21 19:27:58,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:27:58,056 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:27:58,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:58 WrapperNode [2021-10-21 19:27:58,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:27:58,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:27:58,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:27:58,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:27:58,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:58" (1/1) ... [2021-10-21 19:27:58,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:58" (1/1) ... [2021-10-21 19:27:58,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:27:58,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:27:58,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:27:58,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:27:58,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:58" (1/1) ... [2021-10-21 19:27:58,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:58" (1/1) ... [2021-10-21 19:27:58,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:58" (1/1) ... [2021-10-21 19:27:58,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:58" (1/1) ... [2021-10-21 19:27:58,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:58" (1/1) ... [2021-10-21 19:27:58,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:58" (1/1) ... [2021-10-21 19:27:58,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:58" (1/1) ... [2021-10-21 19:27:58,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:27:58,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:27:58,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:27:58,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:27:58,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:58" (1/1) ... [2021-10-21 19:27:58,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:27:58,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:27:58,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:27:58,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:27:58,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:27:58,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:27:58,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:27:58,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:27:59,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:27:59,533 INFO L299 CfgBuilder]: Removed 106 assume(true) statements. [2021-10-21 19:27:59,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:27:59 BoogieIcfgContainer [2021-10-21 19:27:59,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:27:59,537 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:27:59,537 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:27:59,542 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:27:59,543 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:27:59,543 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:27:57" (1/3) ... [2021-10-21 19:27:59,545 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@768ed6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:27:59, skipping insertion in model container [2021-10-21 19:27:59,545 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:27:59,545 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:27:58" (2/3) ... [2021-10-21 19:27:59,546 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@768ed6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:27:59, skipping insertion in model container [2021-10-21 19:27:59,546 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:27:59,546 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:27:59" (3/3) ... [2021-10-21 19:27:59,549 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product35.cil.c [2021-10-21 19:27:59,642 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:27:59,642 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:27:59,642 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:27:59,642 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:27:59,642 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:27:59,642 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:27:59,643 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:27:59,643 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:27:59,672 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 83 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 82 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:27:59,715 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-10-21 19:27:59,715 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:27:59,715 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:27:59,725 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:27:59,725 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:27:59,725 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:27:59,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 83 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 82 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:27:59,733 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-10-21 19:27:59,733 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:27:59,734 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:27:59,735 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:27:59,735 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:27:59,741 INFO L791 eck$LassoCheckResult]: Stem: 62#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 41#L-1true havoc main_#res;havoc main_#t~ret33, main_~retValue_acc~3, main_~tmp~4;havoc main_~retValue_acc~3;havoc main_~tmp~4; 55#L549true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 75#L557true main_#t~ret33 := valid_product_#res;main_~tmp~4 := main_#t~ret33;havoc main_#t~ret33; 5#L419true assume 0 != main_~tmp~4; 18#L393true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 59#L315-1true [2021-10-21 19:27:59,742 INFO L793 eck$LassoCheckResult]: Loop: 59#L315-1true assume !false; 35#L66true assume test_~splverifierCounter~0 < 4; 60#L67true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 73#L75true assume !(0 != test_~tmp~0); 28#L75-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 37#L85true assume !(0 != test_~tmp___0~0); 63#L85-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 21#L95true assume 0 != test_~tmp___2~0; 22#L101-1true assume !(0 != ~pumpRunning~0); 74#L138true assume !(0 != ~systemActive~0); 70#L145true havoc __utac_acc__Specification3_spec__1_#t~ret30, __utac_acc__Specification3_spec__1_#t~ret31, __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 46#L476true __utac_acc__Specification3_spec__1_#t~ret30 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret30;havoc __utac_acc__Specification3_spec__1_#t~ret30; 15#L309true assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 59#L315-1true [2021-10-21 19:27:59,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:27:59,757 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-21 19:27:59,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:27:59,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606301278] [2021-10-21 19:27:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:27:59,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:00,085 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:00,325 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:00,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1672941122, now seen corresponding path program 1 times [2021-10-21 19:28:00,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:00,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891680218] [2021-10-21 19:28:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:00,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:00,338 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:00,350 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:00,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:00,353 INFO L82 PathProgramCache]: Analyzing trace with hash 41337816, now seen corresponding path program 1 times [2021-10-21 19:28:00,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:00,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798821065] [2021-10-21 19:28:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:00,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:00,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:28:00,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:28:00,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798821065] [2021-10-21 19:28:00,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798821065] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:28:00,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:28:00,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:28:00,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266349955] [2021-10-21 19:28:00,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:28:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:28:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:28:00,746 INFO L87 Difference]: Start difference. First operand has 83 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 82 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:01,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:28:01,141 INFO L93 Difference]: Finished difference Result 216 states and 303 transitions. [2021-10-21 19:28:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:28:01,144 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 216 states and 303 transitions. [2021-10-21 19:28:01,164 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 137 [2021-10-21 19:28:01,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 216 states to 195 states and 282 transitions. [2021-10-21 19:28:01,183 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 195 [2021-10-21 19:28:01,185 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2021-10-21 19:28:01,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 195 states and 282 transitions. [2021-10-21 19:28:01,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:28:01,190 INFO L681 BuchiCegarLoop]: Abstraction has 195 states and 282 transitions. [2021-10-21 19:28:01,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states and 282 transitions. [2021-10-21 19:28:01,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 123. [2021-10-21 19:28:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 123 states have (on average 1.4390243902439024) internal successors, (177), 122 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 177 transitions. [2021-10-21 19:28:01,277 INFO L704 BuchiCegarLoop]: Abstraction has 123 states and 177 transitions. [2021-10-21 19:28:01,278 INFO L587 BuchiCegarLoop]: Abstraction has 123 states and 177 transitions. [2021-10-21 19:28:01,279 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:28:01,279 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 123 states and 177 transitions. [2021-10-21 19:28:01,284 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 86 [2021-10-21 19:28:01,286 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:28:01,286 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:28:01,287 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:28:01,288 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:01,288 INFO L791 eck$LassoCheckResult]: Stem: 387#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 377#L-1 havoc main_#res;havoc main_#t~ret33, main_~retValue_acc~3, main_~tmp~4;havoc main_~retValue_acc~3;havoc main_~tmp~4; 378#L549 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 385#L557 main_#t~ret33 := valid_product_#res;main_~tmp~4 := main_#t~ret33;havoc main_#t~ret33; 319#L419 assume 0 != main_~tmp~4; 320#L393 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 336#L315-1 [2021-10-21 19:28:01,289 INFO L793 eck$LassoCheckResult]: Loop: 336#L315-1 assume !false; 367#L66 assume test_~splverifierCounter~0 < 4; 368#L67 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 386#L75 assume !(0 != test_~tmp~0); 357#L75-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 358#L85 assume !(0 != test_~tmp___0~0); 370#L85-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 346#L95 assume 0 != test_~tmp___2~0; 347#L101-1 assume !(0 != ~pumpRunning~0); 350#L138 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret11, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 392#L170 assume !(0 == ~pumpRunning~0); 389#L145 havoc __utac_acc__Specification3_spec__1_#t~ret30, __utac_acc__Specification3_spec__1_#t~ret31, __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 380#L476 __utac_acc__Specification3_spec__1_#t~ret30 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret30;havoc __utac_acc__Specification3_spec__1_#t~ret30; 335#L309 assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 336#L315-1 [2021-10-21 19:28:01,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:01,290 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-21 19:28:01,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:01,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640740794] [2021-10-21 19:28:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:01,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:01,389 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:01,518 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:01,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:01,519 INFO L82 PathProgramCache]: Analyzing trace with hash -353177362, now seen corresponding path program 1 times [2021-10-21 19:28:01,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:01,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066556396] [2021-10-21 19:28:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:01,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:28:01,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:28:01,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066556396] [2021-10-21 19:28:01,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066556396] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:28:01,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:28:01,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:28:01,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338466710] [2021-10-21 19:28:01,543 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:28:01,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:28:01,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:28:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:28:01,545 INFO L87 Difference]: Start difference. First operand 123 states and 177 transitions. cyclomatic complexity: 57 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:28:01,638 INFO L93 Difference]: Finished difference Result 168 states and 229 transitions. [2021-10-21 19:28:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:28:01,639 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 168 states and 229 transitions. [2021-10-21 19:28:01,644 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 120 [2021-10-21 19:28:01,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 168 states to 168 states and 229 transitions. [2021-10-21 19:28:01,646 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 168 [2021-10-21 19:28:01,647 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 168 [2021-10-21 19:28:01,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 168 states and 229 transitions. [2021-10-21 19:28:01,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:28:01,649 INFO L681 BuchiCegarLoop]: Abstraction has 168 states and 229 transitions. [2021-10-21 19:28:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states and 229 transitions. [2021-10-21 19:28:01,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-10-21 19:28:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 168 states have (on average 1.3630952380952381) internal successors, (229), 167 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:01,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 229 transitions. [2021-10-21 19:28:01,666 INFO L704 BuchiCegarLoop]: Abstraction has 168 states and 229 transitions. [2021-10-21 19:28:01,667 INFO L587 BuchiCegarLoop]: Abstraction has 168 states and 229 transitions. [2021-10-21 19:28:01,667 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:28:01,667 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 229 transitions. [2021-10-21 19:28:01,670 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 120 [2021-10-21 19:28:01,670 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:28:01,670 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:28:01,672 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:28:01,672 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] [2021-10-21 19:28:01,672 INFO L791 eck$LassoCheckResult]: Stem: 696#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 679#L-1 havoc main_#res;havoc main_#t~ret33, main_~retValue_acc~3, main_~tmp~4;havoc main_~retValue_acc~3;havoc main_~tmp~4; 680#L549 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 691#L557 main_#t~ret33 := valid_product_#res;main_~tmp~4 := main_#t~ret33;havoc main_#t~ret33; 616#L419 assume 0 != main_~tmp~4; 617#L393 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 642#L315-1 [2021-10-21 19:28:01,673 INFO L793 eck$LassoCheckResult]: Loop: 642#L315-1 assume !false; 694#L66 assume test_~splverifierCounter~0 < 4; 758#L67 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 708#L75 assume !(0 != test_~tmp~0); 658#L75-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 659#L85 assume !(0 != test_~tmp___0~0); 672#L85-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 762#L95 assume 0 != test_~tmp___2~0; 761#L101-1 assume !(0 != ~pumpRunning~0); 710#L138 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret11, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 711#L170 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret29, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 633#L516 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 634#L521 isHighWaterLevel_#t~ret29 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret29;havoc isHighWaterLevel_#t~ret29; 653#L272 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~1 := 0; 645#L272-2 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 646#L278 processEnvironment_#t~ret11 := isHighWaterLevel_#res;processEnvironment_~tmp~1 := processEnvironment_#t~ret11;havoc processEnvironment_#t~ret11; 705#L174 assume !(0 != processEnvironment_~tmp~1); 707#L145 havoc __utac_acc__Specification3_spec__1_#t~ret30, __utac_acc__Specification3_spec__1_#t~ret31, __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 760#L476 __utac_acc__Specification3_spec__1_#t~ret30 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret30;havoc __utac_acc__Specification3_spec__1_#t~ret30; 759#L309 assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 642#L315-1 [2021-10-21 19:28:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:01,674 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-21 19:28:01,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:01,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620558133] [2021-10-21 19:28:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:01,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:01,754 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:01,854 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:01,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:01,855 INFO L82 PathProgramCache]: Analyzing trace with hash -539551526, now seen corresponding path program 1 times [2021-10-21 19:28:01,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:01,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078061704] [2021-10-21 19:28:01,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:01,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:01,862 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:01,871 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:01,872 INFO L82 PathProgramCache]: Analyzing trace with hash -524839552, now seen corresponding path program 1 times [2021-10-21 19:28:01,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:01,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379025303] [2021-10-21 19:28:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:01,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:28:01,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:28:01,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379025303] [2021-10-21 19:28:01,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379025303] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:28:01,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:28:01,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:28:01,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968987943] [2021-10-21 19:28:02,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:28:02,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:28:02,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:28:02,340 INFO L87 Difference]: Start difference. First operand 168 states and 229 transitions. cyclomatic complexity: 64 Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:02,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:28:02,480 INFO L93 Difference]: Finished difference Result 548 states and 750 transitions. [2021-10-21 19:28:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:28:02,488 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 548 states and 750 transitions. [2021-10-21 19:28:02,495 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 414 [2021-10-21 19:28:02,505 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 548 states to 548 states and 750 transitions. [2021-10-21 19:28:02,505 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 548 [2021-10-21 19:28:02,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 548 [2021-10-21 19:28:02,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 548 states and 750 transitions. [2021-10-21 19:28:02,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:28:02,514 INFO L681 BuchiCegarLoop]: Abstraction has 548 states and 750 transitions. [2021-10-21 19:28:02,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states and 750 transitions. [2021-10-21 19:28:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 330. [2021-10-21 19:28:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 330 states have (on average 1.3333333333333333) internal successors, (440), 329 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:02,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 440 transitions. [2021-10-21 19:28:02,554 INFO L704 BuchiCegarLoop]: Abstraction has 330 states and 440 transitions. [2021-10-21 19:28:02,554 INFO L587 BuchiCegarLoop]: Abstraction has 330 states and 440 transitions. [2021-10-21 19:28:02,554 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:28:02,554 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 330 states and 440 transitions. [2021-10-21 19:28:02,556 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 240 [2021-10-21 19:28:02,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:28:02,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:28:02,558 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:28:02,558 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:02,558 INFO L791 eck$LassoCheckResult]: Stem: 1433#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 1418#L-1 havoc main_#res;havoc main_#t~ret33, main_~retValue_acc~3, main_~tmp~4;havoc main_~retValue_acc~3;havoc main_~tmp~4; 1419#L549 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1429#L557 main_#t~ret33 := valid_product_#res;main_~tmp~4 := main_#t~ret33;havoc main_#t~ret33; 1350#L419 assume 0 != main_~tmp~4; 1351#L393 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1376#L315-1 [2021-10-21 19:28:02,559 INFO L793 eck$LassoCheckResult]: Loop: 1376#L315-1 assume !false; 1593#L66 assume test_~splverifierCounter~0 < 4; 1594#L67 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 1663#L75 assume !(0 != test_~tmp~0); 1661#L75-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 1660#L85 assume !(0 != test_~tmp___0~0); 1648#L85-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 1644#L95 assume 0 != test_~tmp___2~0; 1381#L101-1 assume !(0 != ~pumpRunning~0); 1382#L138 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret11, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1445#L170 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret29, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1367#L516 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1368#L521 isHighWaterLevel_#t~ret29 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret29;havoc isHighWaterLevel_#t~ret29; 1388#L272 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~1 := 0; 1379#L272-2 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1380#L278 processEnvironment_#t~ret11 := isHighWaterLevel_#res;processEnvironment_~tmp~1 := processEnvironment_#t~ret11;havoc processEnvironment_#t~ret11; 1441#L174 assume !(0 != processEnvironment_~tmp~1); 1443#L145 havoc __utac_acc__Specification3_spec__1_#t~ret30, __utac_acc__Specification3_spec__1_#t~ret31, __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 1600#L476 __utac_acc__Specification3_spec__1_#t~ret30 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret30;havoc __utac_acc__Specification3_spec__1_#t~ret30; 1599#L309 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~3);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 1598#L508 __utac_acc__Specification3_spec__1_#t~ret31 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret31;havoc __utac_acc__Specification3_spec__1_#t~ret31; 1596#L315 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 1376#L315-1 [2021-10-21 19:28:02,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:02,560 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-21 19:28:02,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:02,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505028731] [2021-10-21 19:28:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:02,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:02,599 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:02,645 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:02,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:02,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1182032684, now seen corresponding path program 1 times [2021-10-21 19:28:02,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:02,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299232066] [2021-10-21 19:28:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:02,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:02,654 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:02,663 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:02,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:02,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1859629486, now seen corresponding path program 1 times [2021-10-21 19:28:02,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:02,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885483112] [2021-10-21 19:28:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:02,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:02,717 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:02,813 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:29:08,899 WARN L207 SmtUtils]: Spent 1.09 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-21 19:30:17,099 WARN L207 SmtUtils]: Spent 32.70 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-21 19:30:17,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:30:17 BoogieIcfgContainer [2021-10-21 19:30:17,262 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:30:17,263 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:30:17,263 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:30:17,264 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:30:17,264 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:27:59" (3/4) ... [2021-10-21 19:30:17,268 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:30:17,328 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:30:17,329 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:30:17,330 INFO L168 Benchmark]: Toolchain (without parser) took 139960.76 ms. Allocated memory was 96.5 MB in the beginning and 144.7 MB in the end (delta: 48.2 MB). Free memory was 64.0 MB in the beginning and 33.1 MB in the end (delta: 30.9 MB). Peak memory consumption was 77.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:17,331 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 52.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:30:17,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.68 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 64.0 MB in the beginning and 84.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:17,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.86 ms. Allocated memory is still 117.4 MB. Free memory was 84.7 MB in the beginning and 81.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:17,333 INFO L168 Benchmark]: Boogie Preprocessor took 86.54 ms. Allocated memory is still 117.4 MB. Free memory was 81.2 MB in the beginning and 79.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:17,333 INFO L168 Benchmark]: RCFGBuilder took 1296.53 ms. Allocated memory is still 117.4 MB. Free memory was 79.1 MB in the beginning and 41.4 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:17,334 INFO L168 Benchmark]: BuchiAutomizer took 137725.60 ms. Allocated memory was 117.4 MB in the beginning and 144.7 MB in the end (delta: 27.3 MB). Free memory was 41.4 MB in the beginning and 36.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:17,335 INFO L168 Benchmark]: Witness Printer took 65.83 ms. Allocated memory is still 144.7 MB. Free memory was 36.1 MB in the beginning and 33.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:30:17,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 52.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 687.68 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 64.0 MB in the beginning and 84.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.86 ms. Allocated memory is still 117.4 MB. Free memory was 84.7 MB in the beginning and 81.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.54 ms. Allocated memory is still 117.4 MB. Free memory was 81.2 MB in the beginning and 79.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1296.53 ms. Allocated memory is still 117.4 MB. Free memory was 79.1 MB in the beginning and 41.4 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 137725.60 ms. Allocated memory was 117.4 MB in the beginning and 144.7 MB in the end (delta: 27.3 MB). Free memory was 41.4 MB in the beginning and 36.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. * Witness Printer took 65.83 ms. Allocated memory is still 144.7 MB. Free memory was 36.1 MB in the beginning and 33.1 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 330 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 137.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 136.5s. Construction of modules took 0.3s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 126.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 290 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 330 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 396 SDtfs, 1042 SDslu, 1066 SDs, 0 SdLazy, 103 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 355.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 65]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=3646} State at position 1 is {NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c977cfb=69, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16bcc56a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3837e591=0, NULL=3646, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15e21a7c=0, NULL=3664, NULL=3673, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f4eb85e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3252d129=0, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3cc51218=0, NULL=3650, NULL=0, tmp___1=0, NULL=0, NULL=3669, NULL=3660, cleanupTimeShifts=4, tmp=0, tmp=0, NULL=3659, waterLevel=1, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=3649, tmp=1, NULL=0, \result=1, NULL=0, NULL=0, NULL=3648, NULL=0, NULL=0, tmp=1, NULL=0, NULL=0, NULL=3647, retValue_acc=1, NULL=3656, NULL=3651, tmp=0, head=0, NULL=0, NULL=0, NULL=3654, NULL=0, NULL=0, NULL=3672, retValue_acc=0, NULL=3663, NULL=0, NULL=3665, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8dd99d8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39a521a7=0, NULL=3671, tmp___0=0, NULL=0, NULL=3653, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ba14c5d=0, NULL=3657, tmp___0=1, NULL=0, systemActive=1, \result=1, NULL=0, \result=0, retValue_acc=0, NULL=3658, NULL=3668, \result=0, NULL=3652, NULL=0, NULL=0, NULL=3667, NULL=3666, NULL=3662, retValue_acc=1, NULL=3674, tmp___2=69, splverifierCounter=0, NULL=0, \result=0, NULL=3661, tmp___1=0, NULL=0, NULL=0, NULL=3670, NULL=0, NULL=3655} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L130] int pumpRunning = 0; [L131] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L433] int waterLevel = 1; [L434] int methaneLevelCritical = 0; [L740] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L410] int retValue_acc ; [L411] int tmp ; [L553] int retValue_acc ; [L556] retValue_acc = 1 [L557] return (retValue_acc); [L417] tmp = valid_product() [L419] COND TRUE \read(tmp) [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 Loop: [L65] COND TRUE 1 [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) [L138] COND FALSE !(\read(pumpRunning)) [L145] COND TRUE \read(systemActive) [L167] int tmp ; [L170] COND TRUE ! pumpRunning [L264] int retValue_acc ; [L265] int tmp ; [L266] int tmp___0 ; [L513] int retValue_acc ; [L516] COND TRUE waterLevel < 2 [L517] retValue_acc = 1 [L518] return (retValue_acc); [L270] tmp = isHighWaterSensorDry() [L272] COND TRUE \read(tmp) [L273] tmp___0 = 0 [L277] retValue_acc = tmp___0 [L278] return (retValue_acc); [L172] tmp = isHighWaterLevel() [L174] COND FALSE !(\read(tmp)) [L301] int tmp ; [L302] int tmp___0 ; [L303] int tmp___1 ; [L472] int retValue_acc ; [L475] retValue_acc = methaneLevelCritical [L476] return (retValue_acc); [L307] tmp = isMethaneLevelCritical() [L309] COND FALSE !(\read(tmp)) [L504] int retValue_acc ; [L507] retValue_acc = waterLevel [L508] return (retValue_acc); [L313] tmp___0 = getWaterLevel() [L315] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:30:17,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b2f3b8-3311-413d-8489-4def8932ff6d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...