./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a --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 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:54:15,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:54:15,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:54:15,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:54:15,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:54:15,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:54:15,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:54:15,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:54:15,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:54:15,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:54:15,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:54:15,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:54:15,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:54:15,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:54:15,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:54:15,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:54:15,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:54:15,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:54:15,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:54:15,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:54:15,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:54:15,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:54:15,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:54:15,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:54:15,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:54:15,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:54:15,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:54:15,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:54:15,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:54:15,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:54:15,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:54:15,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:54:15,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:54:15,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:54:15,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:54:15,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:54:15,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:54:15,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:54:15,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:54:15,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:54:15,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:54:15,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-21 13:54:15,925 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:54:15,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:54:15,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:54:15,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:54:15,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:54:15,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:54:15,927 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:54:15,927 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-21 13:54:15,928 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-21 13:54:15,928 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-21 13:54:15,928 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-21 13:54:15,928 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-21 13:54:15,928 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-21 13:54:15,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:54:15,929 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:54:15,929 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:54:15,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:54:15,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:54:15,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:54:15,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-21 13:54:15,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-21 13:54:15,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-21 13:54:15,931 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:54:15,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:54:15,931 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-21 13:54:15,931 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:54:15,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-21 13:54:15,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:54:15,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:54:15,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:54:15,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:54:15,933 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-21 13:54:15,934 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_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 [2022-11-21 13:54:16,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:54:16,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:54:16,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:54:16,258 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:54:16,258 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:54:16,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2022-11-21 13:54:21,409 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:54:21,677 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:54:21,678 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2022-11-21 13:54:21,690 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/data/e562b243a/0aaafa65f81348c8bda78b7af1c291c3/FLAG96e74d3fb [2022-11-21 13:54:21,706 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/data/e562b243a/0aaafa65f81348c8bda78b7af1c291c3 [2022-11-21 13:54:21,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:54:21,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:54:21,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:54:21,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:54:21,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:54:21,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:54:21" (1/1) ... [2022-11-21 13:54:21,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d1bc18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:21, skipping insertion in model container [2022-11-21 13:54:21,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:54:21" (1/1) ... [2022-11-21 13:54:21,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:54:21,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:54:22,279 WARN L237 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_1f32e1fa-9bcf-443d-ab80-e4ca00745715/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2022-11-21 13:54:22,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:54:22,305 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:54:22,411 WARN L237 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_1f32e1fa-9bcf-443d-ab80-e4ca00745715/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2022-11-21 13:54:22,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:54:22,438 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:54:22,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22 WrapperNode [2022-11-21 13:54:22,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:54:22,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:54:22,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:54:22,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:54:22,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22" (1/1) ... [2022-11-21 13:54:22,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22" (1/1) ... [2022-11-21 13:54:22,498 INFO L138 Inliner]: procedures = 55, calls = 97, calls flagged for inlining = 50, calls inlined = 51, statements flattened = 359 [2022-11-21 13:54:22,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:54:22,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:54:22,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:54:22,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:54:22,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22" (1/1) ... [2022-11-21 13:54:22,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22" (1/1) ... [2022-11-21 13:54:22,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22" (1/1) ... [2022-11-21 13:54:22,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22" (1/1) ... [2022-11-21 13:54:22,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22" (1/1) ... [2022-11-21 13:54:22,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22" (1/1) ... [2022-11-21 13:54:22,540 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22" (1/1) ... [2022-11-21 13:54:22,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22" (1/1) ... [2022-11-21 13:54:22,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:54:22,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:54:22,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:54:22,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:54:22,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22" (1/1) ... [2022-11-21 13:54:22,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:54:22,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:22,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:54:22,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-21 13:54:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:54:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:54:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:54:22,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:54:22,724 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:54:22,725 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:54:23,121 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:54:23,128 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:54:23,129 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 13:54:23,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:54:23 BoogieIcfgContainer [2022-11-21 13:54:23,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:54:23,132 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-21 13:54:23,133 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-21 13:54:23,151 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-21 13:54:23,152 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 13:54:23,152 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 01:54:21" (1/3) ... [2022-11-21 13:54:23,154 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77895185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 01:54:23, skipping insertion in model container [2022-11-21 13:54:23,154 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 13:54:23,154 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:22" (2/3) ... [2022-11-21 13:54:23,154 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77895185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 01:54:23, skipping insertion in model container [2022-11-21 13:54:23,154 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 13:54:23,155 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:54:23" (3/3) ... [2022-11-21 13:54:23,156 INFO L332 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2022-11-21 13:54:23,219 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-21 13:54:23,220 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-21 13:54:23,220 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-21 13:54:23,220 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-21 13:54:23,220 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-21 13:54:23,220 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-21 13:54:23,220 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-21 13:54:23,221 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-21 13:54:23,225 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 114 states, 113 states have (on average 1.3893805309734513) internal successors, (157), 113 states have internal predecessors, (157), 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) [2022-11-21 13:54:23,249 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2022-11-21 13:54:23,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:54:23,249 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:54:23,257 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:23,257 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:23,257 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-21 13:54:23,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 114 states, 113 states have (on average 1.3893805309734513) internal successors, (157), 113 states have internal predecessors, (157), 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) [2022-11-21 13:54:23,264 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2022-11-21 13:54:23,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:54:23,265 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:54:23,265 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:23,266 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:23,272 INFO L748 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 34#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret33#1, main_~retValue_acc~8#1, main_~tmp~3#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 9#L542true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 71#L535true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;havoc valid_product_~retValue_acc~7#1;valid_product_~retValue_acc~7#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~7#1; 114#L550true main_#t~ret33#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret33#1;havoc main_#t~ret33#1; 37#L642true assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 86#L616true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 92#L921true assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_#t~nondet48#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 58#L847-2true [2022-11-21 13:54:23,272 INFO L750 eck$LassoCheckResult]: Loop: 58#L847-2true assume !false; 38#L848true assume test_~splverifierCounter~0#1 < 4; 106#L849true test_~tmp~6#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 82#L857true assume !(0 != test_~tmp~6#1); 67#L857-2true test_~tmp___0~1#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 90#L867true assume !(0 != test_~tmp___0~1#1); 29#L867-2true test_~tmp___2~0#1 := test_#t~nondet47#1;havoc test_#t~nondet47#1; 21#L877true assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 40#L833true assume { :end_inline_startSystem } true; 42#L885-2true assume { :begin_inline_timeShift } true; 93#L669true assume !(0 != ~pumpRunning~0); 43#L669-2true assume !(0 != ~systemActive~0); 3#L676-1true assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~7#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 52#L100true __utac_acc__Specification2_spec__2_#t~ret49#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~7#1 := __utac_acc__Specification2_spec__2_#t~ret49#1;havoc __utac_acc__Specification2_spec__2_#t~ret49#1; 68#L932true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7#1);~methAndRunningLastTime~0 := 0; 108#L932-1true assume { :end_inline___utac_acc__Specification2_spec__2 } true; 60#L686true assume { :end_inline_timeShift } true; 58#L847-2true [2022-11-21 13:54:23,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:23,279 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2022-11-21 13:54:23,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:23,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317832097] [2022-11-21 13:54:23,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:23,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:23,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:54:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:23,467 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:54:23,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:23,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1568106633, now seen corresponding path program 1 times [2022-11-21 13:54:23,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:23,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580194939] [2022-11-21 13:54:23,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:23,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:54:23,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:23,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580194939] [2022-11-21 13:54:23,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580194939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:23,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:23,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:54:23,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577928696] [2022-11-21 13:54:23,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:23,626 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-21 13:54:23,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:23,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:54:23,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:54:23,667 INFO L87 Difference]: Start difference. First operand has 114 states, 113 states have (on average 1.3893805309734513) internal successors, (157), 113 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:23,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:23,733 INFO L93 Difference]: Finished difference Result 212 states and 280 transitions. [2022-11-21 13:54:23,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 212 states and 280 transitions. [2022-11-21 13:54:23,740 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 136 [2022-11-21 13:54:23,749 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 212 states to 192 states and 259 transitions. [2022-11-21 13:54:23,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 192 [2022-11-21 13:54:23,756 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 192 [2022-11-21 13:54:23,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 192 states and 259 transitions. [2022-11-21 13:54:23,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:54:23,758 INFO L218 hiAutomatonCegarLoop]: Abstraction has 192 states and 259 transitions. [2022-11-21 13:54:23,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states and 259 transitions. [2022-11-21 13:54:23,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2022-11-21 13:54:23,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 189 states have (on average 1.3492063492063493) internal successors, (255), 188 states have internal predecessors, (255), 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) [2022-11-21 13:54:23,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 255 transitions. [2022-11-21 13:54:23,798 INFO L240 hiAutomatonCegarLoop]: Abstraction has 189 states and 255 transitions. [2022-11-21 13:54:23,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:54:23,803 INFO L428 stractBuchiCegarLoop]: Abstraction has 189 states and 255 transitions. [2022-11-21 13:54:23,804 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-21 13:54:23,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 255 transitions. [2022-11-21 13:54:23,807 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 133 [2022-11-21 13:54:23,807 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:54:23,807 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:54:23,808 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:23,808 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:23,809 INFO L748 eck$LassoCheckResult]: Stem: 439#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 382#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret33#1, main_~retValue_acc~8#1, main_~tmp~3#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 347#L542 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 348#L535 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;havoc valid_product_~retValue_acc~7#1;valid_product_~retValue_acc~7#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~7#1; 423#L550 main_#t~ret33#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret33#1;havoc main_#t~ret33#1; 384#L642 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 385#L616 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 432#L921 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_#t~nondet48#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 438#L847-2 [2022-11-21 13:54:23,809 INFO L750 eck$LassoCheckResult]: Loop: 438#L847-2 assume !false; 449#L848 assume test_~splverifierCounter~0#1 < 4; 450#L849 test_~tmp~6#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 480#L857 assume !(0 != test_~tmp~6#1); 478#L857-2 test_~tmp___0~1#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 476#L867 assume !(0 != test_~tmp___0~1#1); 474#L867-2 test_~tmp___2~0#1 := test_#t~nondet47#1;havoc test_#t~nondet47#1; 473#L877 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet48#1;havoc test_#t~nondet48#1; 472#L885 assume !(0 != test_~tmp___1~0#1); 388#L885-2 assume { :begin_inline_timeShift } true; 470#L669 assume !(0 != ~pumpRunning~0); 468#L669-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 464#L701 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 462#L693-1 assume { :end_inline_processEnvironment__wrappee__base } true; 459#L701-1 assume { :end_inline_processEnvironment } true; 458#L676-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~7#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 457#L100 __utac_acc__Specification2_spec__2_#t~ret49#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~7#1 := __utac_acc__Specification2_spec__2_#t~ret49#1;havoc __utac_acc__Specification2_spec__2_#t~ret49#1; 455#L932 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7#1);~methAndRunningLastTime~0 := 0; 452#L932-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 451#L686 assume { :end_inline_timeShift } true; 438#L847-2 [2022-11-21 13:54:23,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:23,810 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2022-11-21 13:54:23,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:23,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069420672] [2022-11-21 13:54:23,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:23,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:23,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:54:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:23,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:54:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:23,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1459302315, now seen corresponding path program 1 times [2022-11-21 13:54:23,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:23,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946957724] [2022-11-21 13:54:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:23,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:54:23,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:23,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946957724] [2022-11-21 13:54:23,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946957724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:23,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:23,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:54:23,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683846397] [2022-11-21 13:54:23,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:23,881 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-21 13:54:23,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:23,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:54:23,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:54:23,882 INFO L87 Difference]: Start difference. First operand 189 states and 255 transitions. cyclomatic complexity: 69 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-11-21 13:54:23,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:23,951 INFO L93 Difference]: Finished difference Result 301 states and 396 transitions. [2022-11-21 13:54:23,951 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 301 states and 396 transitions. [2022-11-21 13:54:23,956 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 219 [2022-11-21 13:54:23,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 301 states to 301 states and 396 transitions. [2022-11-21 13:54:23,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 301 [2022-11-21 13:54:23,960 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 301 [2022-11-21 13:54:23,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 301 states and 396 transitions. [2022-11-21 13:54:23,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:54:23,962 INFO L218 hiAutomatonCegarLoop]: Abstraction has 301 states and 396 transitions. [2022-11-21 13:54:23,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states and 396 transitions. [2022-11-21 13:54:23,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-11-21 13:54:23,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 301 states have (on average 1.3156146179401993) internal successors, (396), 300 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:54:23,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 396 transitions. [2022-11-21 13:54:23,985 INFO L240 hiAutomatonCegarLoop]: Abstraction has 301 states and 396 transitions. [2022-11-21 13:54:23,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:54:23,986 INFO L428 stractBuchiCegarLoop]: Abstraction has 301 states and 396 transitions. [2022-11-21 13:54:23,987 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-21 13:54:23,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 301 states and 396 transitions. [2022-11-21 13:54:24,008 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 219 [2022-11-21 13:54:24,008 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:54:24,008 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:54:24,009 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:24,009 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:24,010 INFO L748 eck$LassoCheckResult]: Stem: 942#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 879#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret33#1, main_~retValue_acc~8#1, main_~tmp~3#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 843#L542 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 844#L535 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;havoc valid_product_~retValue_acc~7#1;valid_product_~retValue_acc~7#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~7#1; 924#L550 main_#t~ret33#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret33#1;havoc main_#t~ret33#1; 882#L642 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 883#L616 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 934#L921 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_#t~nondet48#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 940#L847-2 [2022-11-21 13:54:24,010 INFO L750 eck$LassoCheckResult]: Loop: 940#L847-2 assume !false; 1002#L848 assume test_~splverifierCounter~0#1 < 4; 1001#L849 test_~tmp~6#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 999#L857 assume !(0 != test_~tmp~6#1); 997#L857-2 test_~tmp___0~1#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 996#L867 assume !(0 != test_~tmp___0~1#1); 964#L867-2 test_~tmp___2~0#1 := test_#t~nondet47#1;havoc test_#t~nondet47#1; 965#L877 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet48#1;havoc test_#t~nondet48#1; 898#L885 assume !(0 != test_~tmp___1~0#1); 887#L885-2 assume { :begin_inline_timeShift } true; 889#L669 assume !(0 != ~pumpRunning~0); 941#L669-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 1025#L701 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret44#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~11#1;havoc isHighWaterLevel_~tmp~5#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 1023#L140 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 1019#L145 isHighWaterLevel_#t~ret44#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~5#1 := isHighWaterLevel_#t~ret44#1;havoc isHighWaterLevel_#t~ret44#1; 1017#L803 assume 0 != isHighWaterLevel_~tmp~5#1;isHighWaterLevel_~tmp___0~0#1 := 0; 1016#L803-2 isHighWaterLevel_~retValue_acc~11#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~11#1; 1015#L809 processEnvironment_#t~ret34#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~4#1 := processEnvironment_#t~ret34#1;havoc processEnvironment_#t~ret34#1; 1014#L705 assume !(0 != processEnvironment_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1013#L693 assume { :end_inline_processEnvironment__wrappee__base } true; 1012#L701-1 assume { :end_inline_processEnvironment } true; 1011#L676-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~7#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 1010#L100 __utac_acc__Specification2_spec__2_#t~ret49#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~7#1 := __utac_acc__Specification2_spec__2_#t~ret49#1;havoc __utac_acc__Specification2_spec__2_#t~ret49#1; 1008#L932 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7#1);~methAndRunningLastTime~0 := 0; 1005#L932-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 1004#L686 assume { :end_inline_timeShift } true; 940#L847-2 [2022-11-21 13:54:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:24,011 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2022-11-21 13:54:24,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:24,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328340705] [2022-11-21 13:54:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:24,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:24,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:54:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:24,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:54:24,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:24,040 INFO L85 PathProgramCache]: Analyzing trace with hash -854083691, now seen corresponding path program 1 times [2022-11-21 13:54:24,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:24,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044276394] [2022-11-21 13:54:24,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:24,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:54:24,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:24,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044276394] [2022-11-21 13:54:24,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044276394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:24,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:24,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:54:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226748251] [2022-11-21 13:54:24,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:24,112 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-21 13:54:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:54:24,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:54:24,114 INFO L87 Difference]: Start difference. First operand 301 states and 396 transitions. cyclomatic complexity: 98 Second operand has 4 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) [2022-11-21 13:54:24,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:24,187 INFO L93 Difference]: Finished difference Result 863 states and 1124 transitions. [2022-11-21 13:54:24,188 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 863 states and 1124 transitions. [2022-11-21 13:54:24,195 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 641 [2022-11-21 13:54:24,201 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 863 states to 863 states and 1124 transitions. [2022-11-21 13:54:24,202 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 863 [2022-11-21 13:54:24,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 863 [2022-11-21 13:54:24,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 863 states and 1124 transitions. [2022-11-21 13:54:24,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:54:24,206 INFO L218 hiAutomatonCegarLoop]: Abstraction has 863 states and 1124 transitions. [2022-11-21 13:54:24,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states and 1124 transitions. [2022-11-21 13:54:24,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 313. [2022-11-21 13:54:24,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 313 states have (on average 1.3035143769968052) internal successors, (408), 312 states have internal predecessors, (408), 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) [2022-11-21 13:54:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 408 transitions. [2022-11-21 13:54:24,228 INFO L240 hiAutomatonCegarLoop]: Abstraction has 313 states and 408 transitions. [2022-11-21 13:54:24,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:54:24,229 INFO L428 stractBuchiCegarLoop]: Abstraction has 313 states and 408 transitions. [2022-11-21 13:54:24,230 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-21 13:54:24,230 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 313 states and 408 transitions. [2022-11-21 13:54:24,232 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 227 [2022-11-21 13:54:24,232 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:54:24,232 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:54:24,233 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:24,233 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:24,233 INFO L748 eck$LassoCheckResult]: Stem: 2139#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 2055#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret33#1, main_~retValue_acc~8#1, main_~tmp~3#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 2017#L542 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2018#L535 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;havoc valid_product_~retValue_acc~7#1;valid_product_~retValue_acc~7#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~7#1; 2113#L550 main_#t~ret33#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret33#1;havoc main_#t~ret33#1; 2061#L642 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 2062#L616 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 2129#L921 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_#t~nondet48#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2096#L847-2 [2022-11-21 13:54:24,234 INFO L750 eck$LassoCheckResult]: Loop: 2096#L847-2 assume !false; 2063#L848 assume test_~splverifierCounter~0#1 < 4; 2064#L849 test_~tmp~6#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 2143#L857 assume !(0 != test_~tmp~6#1); 2110#L857-2 test_~tmp___0~1#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 2111#L867 assume !(0 != test_~tmp___0~1#1); 2174#L867-2 test_~tmp___2~0#1 := test_#t~nondet47#1;havoc test_#t~nondet47#1; 2151#L877 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 2066#L833 assume { :end_inline_startSystem } true; 2067#L885-2 assume { :begin_inline_timeShift } true; 2069#L669 assume !(0 != ~pumpRunning~0); 2157#L669-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 2213#L701 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret44#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~11#1;havoc isHighWaterLevel_~tmp~5#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 2086#L140 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 2087#L145 isHighWaterLevel_#t~ret44#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~5#1 := isHighWaterLevel_#t~ret44#1;havoc isHighWaterLevel_#t~ret44#1; 2039#L803 assume !(0 != isHighWaterLevel_~tmp~5#1);isHighWaterLevel_~tmp___0~0#1 := 1; 2040#L803-2 isHighWaterLevel_~retValue_acc~11#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~11#1; 2142#L809 processEnvironment_#t~ret34#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~4#1 := processEnvironment_#t~ret34#1;havoc processEnvironment_#t~ret34#1; 2130#L705 assume !(0 != processEnvironment_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2131#L693 assume { :end_inline_processEnvironment__wrappee__base } true; 2041#L701-1 assume { :end_inline_processEnvironment } true; 2005#L676-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~7#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 2006#L100 __utac_acc__Specification2_spec__2_#t~ret49#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~7#1 := __utac_acc__Specification2_spec__2_#t~ret49#1;havoc __utac_acc__Specification2_spec__2_#t~ret49#1; 2089#L932 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7#1);~methAndRunningLastTime~0 := 0; 2049#L932-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 2100#L686 assume { :end_inline_timeShift } true; 2096#L847-2 [2022-11-21 13:54:24,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:24,234 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2022-11-21 13:54:24,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:24,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263379573] [2022-11-21 13:54:24,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:24,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:24,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:54:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:24,277 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:54:24,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:24,278 INFO L85 PathProgramCache]: Analyzing trace with hash -302665755, now seen corresponding path program 1 times [2022-11-21 13:54:24,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:24,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947162885] [2022-11-21 13:54:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:24,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:54:24,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:24,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947162885] [2022-11-21 13:54:24,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947162885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:24,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:24,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:54:24,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577517025] [2022-11-21 13:54:24,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:24,398 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-21 13:54:24,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:24,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:54:24,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:54:24,399 INFO L87 Difference]: Start difference. First operand 313 states and 408 transitions. cyclomatic complexity: 98 Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2022-11-21 13:54:24,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:24,493 INFO L93 Difference]: Finished difference Result 886 states and 1161 transitions. [2022-11-21 13:54:24,494 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 886 states and 1161 transitions. [2022-11-21 13:54:24,501 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 666 [2022-11-21 13:54:24,506 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 886 states to 886 states and 1161 transitions. [2022-11-21 13:54:24,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 886 [2022-11-21 13:54:24,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 886 [2022-11-21 13:54:24,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 886 states and 1161 transitions. [2022-11-21 13:54:24,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:54:24,510 INFO L218 hiAutomatonCegarLoop]: Abstraction has 886 states and 1161 transitions. [2022-11-21 13:54:24,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states and 1161 transitions. [2022-11-21 13:54:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 331. [2022-11-21 13:54:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 331 states have (on average 1.2870090634441087) internal successors, (426), 330 states have internal predecessors, (426), 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) [2022-11-21 13:54:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 426 transitions. [2022-11-21 13:54:24,526 INFO L240 hiAutomatonCegarLoop]: Abstraction has 331 states and 426 transitions. [2022-11-21 13:54:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:54:24,527 INFO L428 stractBuchiCegarLoop]: Abstraction has 331 states and 426 transitions. [2022-11-21 13:54:24,528 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-21 13:54:24,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 331 states and 426 transitions. [2022-11-21 13:54:24,530 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2022-11-21 13:54:24,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:54:24,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:54:24,531 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:24,531 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:24,531 INFO L748 eck$LassoCheckResult]: Stem: 3343#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 3267#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret33#1, main_~retValue_acc~8#1, main_~tmp~3#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 3230#L542 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 3231#L535 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;havoc valid_product_~retValue_acc~7#1;valid_product_~retValue_acc~7#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~7#1; 3318#L550 main_#t~ret33#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret33#1;havoc main_#t~ret33#1; 3273#L642 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 3274#L616 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 3334#L921 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_#t~nondet48#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 3339#L847-2 [2022-11-21 13:54:24,532 INFO L750 eck$LassoCheckResult]: Loop: 3339#L847-2 assume !false; 3439#L848 assume test_~splverifierCounter~0#1 < 4; 3438#L849 test_~tmp~6#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 3436#L857 assume !(0 != test_~tmp~6#1); 3434#L857-2 test_~tmp___0~1#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 3432#L867 assume !(0 != test_~tmp___0~1#1); 3430#L867-2 test_~tmp___2~0#1 := test_#t~nondet47#1;havoc test_#t~nondet47#1; 3429#L877 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 3248#L833 assume { :end_inline_startSystem } true; 3278#L885-2 assume { :begin_inline_timeShift } true; 3426#L669 assume !(0 != ~pumpRunning~0); 3282#L669-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 3283#L701 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret44#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~11#1;havoc isHighWaterLevel_~tmp~5#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 3294#L140 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 3296#L145 isHighWaterLevel_#t~ret44#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~5#1 := isHighWaterLevel_#t~ret44#1;havoc isHighWaterLevel_#t~ret44#1; 3385#L803 assume 0 != isHighWaterLevel_~tmp~5#1;isHighWaterLevel_~tmp___0~0#1 := 0; 3386#L803-2 isHighWaterLevel_~retValue_acc~11#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~11#1; 3369#L809 processEnvironment_#t~ret34#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~4#1 := processEnvironment_#t~ret34#1;havoc processEnvironment_#t~ret34#1; 3370#L705 assume !(0 != processEnvironment_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3346#L693 assume { :end_inline_processEnvironment__wrappee__base } true; 3347#L701-1 assume { :end_inline_processEnvironment } true; 3448#L676-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~7#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 3447#L100 __utac_acc__Specification2_spec__2_#t~ret49#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~7#1 := __utac_acc__Specification2_spec__2_#t~ret49#1;havoc __utac_acc__Specification2_spec__2_#t~ret49#1; 3445#L932 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7#1);~methAndRunningLastTime~0 := 0; 3442#L932-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 3441#L686 assume { :end_inline_timeShift } true; 3339#L847-2 [2022-11-21 13:54:24,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 5 times [2022-11-21 13:54:24,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:24,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254860967] [2022-11-21 13:54:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:24,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:24,542 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:54:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:24,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:54:24,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:24,558 INFO L85 PathProgramCache]: Analyzing trace with hash -416924319, now seen corresponding path program 1 times [2022-11-21 13:54:24,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:24,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274038817] [2022-11-21 13:54:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:24,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:24,571 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:54:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:24,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:54:24,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:24,586 INFO L85 PathProgramCache]: Analyzing trace with hash 281321226, now seen corresponding path program 1 times [2022-11-21 13:54:24,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:24,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017298308] [2022-11-21 13:54:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:24,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:24,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:54:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:24,647 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:54:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:26,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:54:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:54:26,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 01:54:26 BoogieIcfgContainer [2022-11-21 13:54:26,190 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-21 13:54:26,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 13:54:26,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 13:54:26,191 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 13:54:26,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:54:23" (3/4) ... [2022-11-21 13:54:26,197 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-21 13:54:26,272 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 13:54:26,272 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 13:54:26,273 INFO L158 Benchmark]: Toolchain (without parser) took 4562.38ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 91.1MB in the beginning and 123.2MB in the end (delta: -32.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:54:26,273 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:54:26,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 726.96ms. Allocated memory is still 138.4MB. Free memory was 90.7MB in the beginning and 103.4MB in the end (delta: -12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 13:54:26,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.13ms. Allocated memory is still 138.4MB. Free memory was 103.4MB in the beginning and 100.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:54:26,283 INFO L158 Benchmark]: Boogie Preprocessor took 58.75ms. Allocated memory is still 138.4MB. Free memory was 100.9MB in the beginning and 98.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:54:26,283 INFO L158 Benchmark]: RCFGBuilder took 573.15ms. Allocated memory is still 138.4MB. Free memory was 98.8MB in the beginning and 80.3MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-21 13:54:26,284 INFO L158 Benchmark]: BuchiAutomizer took 3057.94ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 80.3MB in the beginning and 126.3MB in the end (delta: -46.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:54:26,284 INFO L158 Benchmark]: Witness Printer took 81.73ms. Allocated memory is still 167.8MB. Free memory was 126.3MB in the beginning and 123.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:54:26,286 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 726.96ms. Allocated memory is still 138.4MB. Free memory was 90.7MB in the beginning and 103.4MB in the end (delta: -12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.13ms. Allocated memory is still 138.4MB. Free memory was 103.4MB in the beginning and 100.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.75ms. Allocated memory is still 138.4MB. Free memory was 100.9MB in the beginning and 98.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 573.15ms. Allocated memory is still 138.4MB. Free memory was 98.8MB in the beginning and 80.3MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 3057.94ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 80.3MB in the beginning and 126.3MB in the end (delta: -46.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 81.73ms. Allocated memory is still 167.8MB. Free memory was 126.3MB in the beginning and 123.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 331 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 1108 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1030 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1030 mSDsluCounter, 1931 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1124 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 807 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 847]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int cleanupTimeShifts = 4; [L661] int pumpRunning = 0; [L662] int systemActive = 1; [L915] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] int retValue_acc ; [L634] int tmp ; [L638] FCALL select_helpers() [L639] FCALL select_features() [L640] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L640] RET, EXPR valid_product() [L640] tmp = valid_product() [L642] COND TRUE \read(tmp) [L644] FCALL setup() [L645] CALL runTest() [L626] CALL __utac_acc__Specification2_spec__1() [L920] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L626] RET __utac_acc__Specification2_spec__1() [L627] CALL test() [L838] int splverifierCounter ; [L839] int tmp ; [L840] int tmp___0 ; [L841] int tmp___1 ; [L842] int tmp___2 ; [L845] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L847] COND TRUE 1 [L849] COND TRUE splverifierCounter < 4 [L855] tmp = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp)) [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___0)) [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND TRUE \read(tmp___2) [L879] CALL startSystem() [L832] systemActive = 1 [L879] RET startSystem() [L894] CALL timeShift() [L669] COND FALSE !(\read(pumpRunning)) [L676] COND TRUE \read(systemActive) [L678] CALL processEnvironment() [L698] int tmp ; [L701] COND TRUE ! pumpRunning [L703] CALL, EXPR isHighWaterLevel() [L795] int retValue_acc ; [L796] int tmp ; [L797] int tmp___0 ; [L801] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; [L140] COND TRUE waterLevel < 2 [L141] retValue_acc = 1 [L142] return (retValue_acc); [L801] RET, EXPR isHighWaterSensorDry() [L801] tmp = isHighWaterSensorDry() [L803] COND TRUE \read(tmp) [L804] tmp___0 = 0 [L808] retValue_acc = tmp___0 [L809] return (retValue_acc); [L703] RET, EXPR isHighWaterLevel() [L703] tmp = isHighWaterLevel() [L705] COND FALSE !(\read(tmp)) [L711] FCALL processEnvironment__wrappee__base() [L678] RET processEnvironment() [L684] CALL __utac_acc__Specification2_spec__2() [L925] int tmp ; [L926] int tmp___0 ; [L930] CALL, EXPR isMethaneLevelCritical() [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L930] RET, EXPR isMethaneLevelCritical() [L930] tmp = isMethaneLevelCritical() [L932] COND FALSE !(\read(tmp)) [L948] methAndRunningLastTime = 0 [L684] RET __utac_acc__Specification2_spec__2() [L894] RET timeShift() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 847]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int cleanupTimeShifts = 4; [L661] int pumpRunning = 0; [L662] int systemActive = 1; [L915] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] int retValue_acc ; [L634] int tmp ; [L638] FCALL select_helpers() [L639] FCALL select_features() [L640] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L640] RET, EXPR valid_product() [L640] tmp = valid_product() [L642] COND TRUE \read(tmp) [L644] FCALL setup() [L645] CALL runTest() [L626] CALL __utac_acc__Specification2_spec__1() [L920] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L626] RET __utac_acc__Specification2_spec__1() [L627] CALL test() [L838] int splverifierCounter ; [L839] int tmp ; [L840] int tmp___0 ; [L841] int tmp___1 ; [L842] int tmp___2 ; [L845] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L847] COND TRUE 1 [L849] COND TRUE splverifierCounter < 4 [L855] tmp = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp)) [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___0)) [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND TRUE \read(tmp___2) [L879] CALL startSystem() [L832] systemActive = 1 [L879] RET startSystem() [L894] CALL timeShift() [L669] COND FALSE !(\read(pumpRunning)) [L676] COND TRUE \read(systemActive) [L678] CALL processEnvironment() [L698] int tmp ; [L701] COND TRUE ! pumpRunning [L703] CALL, EXPR isHighWaterLevel() [L795] int retValue_acc ; [L796] int tmp ; [L797] int tmp___0 ; [L801] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; [L140] COND TRUE waterLevel < 2 [L141] retValue_acc = 1 [L142] return (retValue_acc); [L801] RET, EXPR isHighWaterSensorDry() [L801] tmp = isHighWaterSensorDry() [L803] COND TRUE \read(tmp) [L804] tmp___0 = 0 [L808] retValue_acc = tmp___0 [L809] return (retValue_acc); [L703] RET, EXPR isHighWaterLevel() [L703] tmp = isHighWaterLevel() [L705] COND FALSE !(\read(tmp)) [L711] FCALL processEnvironment__wrappee__base() [L678] RET processEnvironment() [L684] CALL __utac_acc__Specification2_spec__2() [L925] int tmp ; [L926] int tmp___0 ; [L930] CALL, EXPR isMethaneLevelCritical() [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L930] RET, EXPR isMethaneLevelCritical() [L930] tmp = isMethaneLevelCritical() [L932] COND FALSE !(\read(tmp)) [L948] methAndRunningLastTime = 0 [L684] RET __utac_acc__Specification2_spec__2() [L894] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-21 13:54:26,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f32e1fa-9bcf-443d-ab80-e4ca00745715/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)