./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product49.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product49.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ebbbe9395fd7f6497497f0e6f84282075bb296e20acc9821d0fb2d7075b331d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:52:22,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:52:22,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:52:22,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:52:22,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:52:22,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:52:22,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:52:22,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:52:22,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:52:22,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:52:22,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:52:22,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:52:22,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:52:22,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:52:22,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:52:22,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:52:22,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:52:22,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:52:22,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:52:22,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:52:22,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:52:22,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:52:22,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:52:22,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:52:22,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:52:22,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:52:22,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:52:22,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:52:22,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:52:22,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:52:22,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:52:22,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:52:22,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:52:22,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:52:22,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:52:22,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:52:22,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:52:22,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:52:22,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:52:22,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:52:22,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:52:22,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 01:52:22,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:52:22,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:52:22,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:52:22,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:52:22,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:52:22,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:52:22,937 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:52:22,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:52:22,937 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:52:22,937 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:52:22,938 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:52:22,938 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:52:22,938 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:52:22,938 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:52:22,939 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:52:22,939 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:52:22,939 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:52:22,940 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:52:22,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:52:22,941 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:52:22,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:52:22,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:52:22,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:52:22,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:52:22,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:52:22,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:52:22,943 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:52:22,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:52:22,943 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:52:22,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:52:22,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:52:22,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:52:22,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:52:22,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:52:22,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:52:22,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:52:22,946 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:52:22,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:52:22,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:52:22,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:52:22,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:52:22,947 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ebbbe9395fd7f6497497f0e6f84282075bb296e20acc9821d0fb2d7075b331d [2021-11-23 01:52:23,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:52:23,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:52:23,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:52:23,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:52:23,295 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:52:23,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec2_product49.cil.c [2021-11-23 01:52:23,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/data/470709093/e695551d05aa4b98acbbbedc4abb733c/FLAGb464e33f7 [2021-11-23 01:52:24,055 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:52:24,069 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/sv-benchmarks/c/product-lines/minepump_spec2_product49.cil.c [2021-11-23 01:52:24,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/data/470709093/e695551d05aa4b98acbbbedc4abb733c/FLAGb464e33f7 [2021-11-23 01:52:24,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/data/470709093/e695551d05aa4b98acbbbedc4abb733c [2021-11-23 01:52:24,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:52:24,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:52:24,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:52:24,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:52:24,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:52:24,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:24" (1/1) ... [2021-11-23 01:52:24,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574db091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24, skipping insertion in model container [2021-11-23 01:52:24,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:24" (1/1) ... [2021-11-23 01:52:24,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:52:24,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:52:24,775 WARN L230 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_cd8b3691-2149-4501-9d54-ed900e97e3cd/sv-benchmarks/c/product-lines/minepump_spec2_product49.cil.c[18359,18372] [2021-11-23 01:52:24,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:52:24,796 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:52:24,919 WARN L230 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_cd8b3691-2149-4501-9d54-ed900e97e3cd/sv-benchmarks/c/product-lines/minepump_spec2_product49.cil.c[18359,18372] [2021-11-23 01:52:24,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:52:24,942 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:52:24,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24 WrapperNode [2021-11-23 01:52:24,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:52:24,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:52:24,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:52:24,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:52:24,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24" (1/1) ... [2021-11-23 01:52:24,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24" (1/1) ... [2021-11-23 01:52:25,019 INFO L137 Inliner]: procedures = 56, calls = 155, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 259 [2021-11-23 01:52:25,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:52:25,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:52:25,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:52:25,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:52:25,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24" (1/1) ... [2021-11-23 01:52:25,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24" (1/1) ... [2021-11-23 01:52:25,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24" (1/1) ... [2021-11-23 01:52:25,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24" (1/1) ... [2021-11-23 01:52:25,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24" (1/1) ... [2021-11-23 01:52:25,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24" (1/1) ... [2021-11-23 01:52:25,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24" (1/1) ... [2021-11-23 01:52:25,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:52:25,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:52:25,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:52:25,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:52:25,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24" (1/1) ... [2021-11-23 01:52:25,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:52:25,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:25,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:52:25,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:52:25,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:52:25,163 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 01:52:25,163 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 01:52:25,163 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-23 01:52:25,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-23 01:52:25,163 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 01:52:25,164 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 01:52:25,164 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 01:52:25,164 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 01:52:25,164 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 01:52:25,164 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 01:52:25,164 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 01:52:25,164 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 01:52:25,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:52:25,165 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 01:52:25,165 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 01:52:25,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:52:25,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:52:25,286 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:52:25,288 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:52:25,699 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:52:25,768 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:52:25,769 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 01:52:25,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:25 BoogieIcfgContainer [2021-11-23 01:52:25,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:52:25,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:52:25,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:52:25,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:52:25,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:24" (1/3) ... [2021-11-23 01:52:25,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1175b9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:25, skipping insertion in model container [2021-11-23 01:52:25,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:24" (2/3) ... [2021-11-23 01:52:25,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1175b9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:25, skipping insertion in model container [2021-11-23 01:52:25,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:25" (3/3) ... [2021-11-23 01:52:25,782 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product49.cil.c [2021-11-23 01:52:25,788 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:52:25,789 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 01:52:25,846 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:52:25,856 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:52:25,856 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 01:52:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 44 states have internal predecessors, (52), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 01:52:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 01:52:25,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:25,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:25,901 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:25,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:25,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1941332222, now seen corresponding path program 1 times [2021-11-23 01:52:25,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:25,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641247439] [2021-11-23 01:52:25,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:25,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:26,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:26,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641247439] [2021-11-23 01:52:26,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641247439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:26,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:26,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:52:26,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673441673] [2021-11-23 01:52:26,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:26,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:52:26,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:26,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:52:26,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:52:26,278 INFO L87 Difference]: Start difference. First operand has 56 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 44 states have internal predecessors, (52), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:52:26,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:26,375 INFO L93 Difference]: Finished difference Result 110 states and 149 transitions. [2021-11-23 01:52:26,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:52:26,378 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-23 01:52:26,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:26,389 INFO L225 Difference]: With dead ends: 110 [2021-11-23 01:52:26,390 INFO L226 Difference]: Without dead ends: 51 [2021-11-23 01:52:26,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:52:26,398 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:26,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:52:26,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-23 01:52:26,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-23 01:52:26,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 40 states have internal predecessors, (44), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-23 01:52:26,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2021-11-23 01:52:26,447 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 17 [2021-11-23 01:52:26,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:26,448 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2021-11-23 01:52:26,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:52:26,449 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2021-11-23 01:52:26,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 01:52:26,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:26,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:26,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:52:26,452 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:26,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:26,454 INFO L85 PathProgramCache]: Analyzing trace with hash -908573725, now seen corresponding path program 1 times [2021-11-23 01:52:26,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:26,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809440211] [2021-11-23 01:52:26,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:26,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:26,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:26,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809440211] [2021-11-23 01:52:26,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809440211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:26,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:26,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:52:26,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672072586] [2021-11-23 01:52:26,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:26,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:26,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:26,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:26,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:26,554 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:52:26,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:26,607 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2021-11-23 01:52:26,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:26,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-23 01:52:26,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:26,613 INFO L225 Difference]: With dead ends: 79 [2021-11-23 01:52:26,614 INFO L226 Difference]: Without dead ends: 43 [2021-11-23 01:52:26,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:26,622 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:26,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 71 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:52:26,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-23 01:52:26,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-23 01:52:26,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 35 states have internal predecessors, (38), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 01:52:26,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2021-11-23 01:52:26,636 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 18 [2021-11-23 01:52:26,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:26,637 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2021-11-23 01:52:26,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:52:26,637 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2021-11-23 01:52:26,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 01:52:26,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:26,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:26,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:52:26,639 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:26,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:26,640 INFO L85 PathProgramCache]: Analyzing trace with hash -759752505, now seen corresponding path program 1 times [2021-11-23 01:52:26,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:26,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445467904] [2021-11-23 01:52:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:26,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:26,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:26,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445467904] [2021-11-23 01:52:26,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445467904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:26,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:26,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 01:52:26,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994611339] [2021-11-23 01:52:26,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:26,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:52:26,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:52:26,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:52:26,716 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:52:26,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:26,808 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2021-11-23 01:52:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 01:52:26,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-23 01:52:26,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:26,812 INFO L225 Difference]: With dead ends: 84 [2021-11-23 01:52:26,814 INFO L226 Difference]: Without dead ends: 43 [2021-11-23 01:52:26,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:52:26,817 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 50 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:26,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 51 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:52:26,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-23 01:52:26,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-23 01:52:26,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 01:52:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-11-23 01:52:26,833 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 20 [2021-11-23 01:52:26,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:26,834 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-11-23 01:52:26,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:52:26,834 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-11-23 01:52:26,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 01:52:26,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:26,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:26,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:52:26,836 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:26,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:26,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1480723860, now seen corresponding path program 1 times [2021-11-23 01:52:26,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:26,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277332310] [2021-11-23 01:52:26,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:26,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:26,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:26,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277332310] [2021-11-23 01:52:26,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277332310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:26,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:26,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:52:26,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530670218] [2021-11-23 01:52:26,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:26,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:26,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:26,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:26,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:26,931 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:52:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:27,003 INFO L93 Difference]: Finished difference Result 119 states and 150 transitions. [2021-11-23 01:52:27,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-11-23 01:52:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:27,006 INFO L225 Difference]: With dead ends: 119 [2021-11-23 01:52:27,006 INFO L226 Difference]: Without dead ends: 78 [2021-11-23 01:52:27,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:27,008 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 35 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:27,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 90 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:52:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-23 01:52:27,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-11-23 01:52:27,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 58 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2021-11-23 01:52:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2021-11-23 01:52:27,028 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 23 [2021-11-23 01:52:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:27,028 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2021-11-23 01:52:27,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:52:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2021-11-23 01:52:27,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 01:52:27,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:27,030 INFO L514 BasicCegarLoop]: trace 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, 1, 1] [2021-11-23 01:52:27,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:52:27,031 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:27,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:27,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1160546660, now seen corresponding path program 1 times [2021-11-23 01:52:27,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:27,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743322330] [2021-11-23 01:52:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:27,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:27,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:27,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743322330] [2021-11-23 01:52:27,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743322330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:27,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:27,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 01:52:27,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325567629] [2021-11-23 01:52:27,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:27,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 01:52:27,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:27,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 01:52:27,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:52:27,108 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:52:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:27,242 INFO L93 Difference]: Finished difference Result 220 states and 276 transitions. [2021-11-23 01:52:27,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 01:52:27,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-11-23 01:52:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:27,246 INFO L225 Difference]: With dead ends: 220 [2021-11-23 01:52:27,246 INFO L226 Difference]: Without dead ends: 146 [2021-11-23 01:52:27,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 01:52:27,249 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 30 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:27,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 199 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:52:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-23 01:52:27,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 138. [2021-11-23 01:52:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 93 states have (on average 1.2365591397849462) internal successors, (115), 104 states have internal predecessors, (115), 22 states have call successors, (22), 22 states have call predecessors, (22), 22 states have return successors, (30), 22 states have call predecessors, (30), 22 states have call successors, (30) [2021-11-23 01:52:27,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 167 transitions. [2021-11-23 01:52:27,278 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 167 transitions. Word has length 28 [2021-11-23 01:52:27,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:27,278 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 167 transitions. [2021-11-23 01:52:27,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:52:27,279 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 167 transitions. [2021-11-23 01:52:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 01:52:27,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:27,281 INFO L514 BasicCegarLoop]: trace 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, 1, 1, 1, 1, 1] [2021-11-23 01:52:27,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:52:27,281 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:27,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:27,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1579103765, now seen corresponding path program 1 times [2021-11-23 01:52:27,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:27,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258542900] [2021-11-23 01:52:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:27,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:27,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:27,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258542900] [2021-11-23 01:52:27,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258542900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:27,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:27,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:52:27,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372057131] [2021-11-23 01:52:27,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:27,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:27,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:27,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:27,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:27,337 INFO L87 Difference]: Start difference. First operand 138 states and 167 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 01:52:27,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:27,399 INFO L93 Difference]: Finished difference Result 212 states and 266 transitions. [2021-11-23 01:52:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:27,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-11-23 01:52:27,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:27,404 INFO L225 Difference]: With dead ends: 212 [2021-11-23 01:52:27,404 INFO L226 Difference]: Without dead ends: 210 [2021-11-23 01:52:27,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:27,406 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 29 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:27,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 82 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:52:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-23 01:52:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-11-23 01:52:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 141 states have (on average 1.2411347517730495) internal successors, (175), 158 states have internal predecessors, (175), 34 states have call successors, (34), 34 states have call predecessors, (34), 34 states have return successors, (54), 34 states have call predecessors, (54), 34 states have call successors, (54) [2021-11-23 01:52:27,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 263 transitions. [2021-11-23 01:52:27,473 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 263 transitions. Word has length 31 [2021-11-23 01:52:27,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:27,474 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 263 transitions. [2021-11-23 01:52:27,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 01:52:27,474 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 263 transitions. [2021-11-23 01:52:27,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 01:52:27,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:27,489 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:27,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:52:27,490 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:27,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:27,492 INFO L85 PathProgramCache]: Analyzing trace with hash -672457244, now seen corresponding path program 1 times [2021-11-23 01:52:27,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:27,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819543620] [2021-11-23 01:52:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:27,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 01:52:27,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:27,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819543620] [2021-11-23 01:52:27,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819543620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:27,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:27,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 01:52:27,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713325185] [2021-11-23 01:52:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:27,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 01:52:27,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:27,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 01:52:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:52:27,686 INFO L87 Difference]: Start difference. First operand 210 states and 263 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 01:52:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:28,178 INFO L93 Difference]: Finished difference Result 695 states and 894 transitions. [2021-11-23 01:52:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 01:52:28,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 53 [2021-11-23 01:52:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:28,192 INFO L225 Difference]: With dead ends: 695 [2021-11-23 01:52:28,192 INFO L226 Difference]: Without dead ends: 487 [2021-11-23 01:52:28,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-23 01:52:28,201 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 164 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:28,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 198 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 01:52:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-11-23 01:52:28,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 341. [2021-11-23 01:52:28,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 232 states have (on average 1.2155172413793103) internal successors, (282), 251 states have internal predecessors, (282), 51 states have call successors, (51), 51 states have call predecessors, (51), 57 states have return successors, (81), 54 states have call predecessors, (81), 51 states have call successors, (81) [2021-11-23 01:52:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 414 transitions. [2021-11-23 01:52:28,305 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 414 transitions. Word has length 53 [2021-11-23 01:52:28,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:28,307 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 414 transitions. [2021-11-23 01:52:28,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 01:52:28,308 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 414 transitions. [2021-11-23 01:52:28,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 01:52:28,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:28,314 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 01:52:28,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 01:52:28,315 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:28,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:28,323 INFO L85 PathProgramCache]: Analyzing trace with hash 513446656, now seen corresponding path program 1 times [2021-11-23 01:52:28,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:28,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705288121] [2021-11-23 01:52:28,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:28,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 01:52:28,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:28,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705288121] [2021-11-23 01:52:28,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705288121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:28,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:28,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 01:52:28,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845919545] [2021-11-23 01:52:28,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:28,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:52:28,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:28,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:52:28,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:52:28,445 INFO L87 Difference]: Start difference. First operand 341 states and 414 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 01:52:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:28,578 INFO L93 Difference]: Finished difference Result 533 states and 658 transitions. [2021-11-23 01:52:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:52:28,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-11-23 01:52:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:28,586 INFO L225 Difference]: With dead ends: 533 [2021-11-23 01:52:28,586 INFO L226 Difference]: Without dead ends: 295 [2021-11-23 01:52:28,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:52:28,588 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 38 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:28,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 144 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:52:28,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-23 01:52:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 279. [2021-11-23 01:52:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 188 states have (on average 1.202127659574468) internal successors, (226), 204 states have internal predecessors, (226), 42 states have call successors, (42), 42 states have call predecessors, (42), 48 states have return successors, (64), 44 states have call predecessors, (64), 42 states have call successors, (64) [2021-11-23 01:52:28,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 332 transitions. [2021-11-23 01:52:28,648 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 332 transitions. Word has length 56 [2021-11-23 01:52:28,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:28,649 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 332 transitions. [2021-11-23 01:52:28,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 01:52:28,650 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 332 transitions. [2021-11-23 01:52:28,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 01:52:28,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:28,654 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:28,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 01:52:28,654 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:28,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:28,657 INFO L85 PathProgramCache]: Analyzing trace with hash 828904072, now seen corresponding path program 1 times [2021-11-23 01:52:28,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:28,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829279335] [2021-11-23 01:52:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:28,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 01:52:28,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:28,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829279335] [2021-11-23 01:52:28,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829279335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:52:28,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748657881] [2021-11-23 01:52:28,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:28,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:28,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:28,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:52:28,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:52:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:28,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 01:52:28,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:29,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 01:52:29,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748657881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:29,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 01:52:29,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-23 01:52:29,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214886461] [2021-11-23 01:52:29,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:29,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:29,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:29,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:29,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:52:29,154 INFO L87 Difference]: Start difference. First operand 279 states and 332 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-23 01:52:29,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:29,262 INFO L93 Difference]: Finished difference Result 476 states and 576 transitions. [2021-11-23 01:52:29,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:29,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2021-11-23 01:52:29,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:29,265 INFO L225 Difference]: With dead ends: 476 [2021-11-23 01:52:29,265 INFO L226 Difference]: Without dead ends: 259 [2021-11-23 01:52:29,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:52:29,267 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 21 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:29,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 83 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:52:29,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-23 01:52:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2021-11-23 01:52:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 175 states have (on average 1.16) internal successors, (203), 190 states have internal predecessors, (203), 39 states have call successors, (39), 39 states have call predecessors, (39), 44 states have return successors, (49), 41 states have call predecessors, (49), 39 states have call successors, (49) [2021-11-23 01:52:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 291 transitions. [2021-11-23 01:52:29,298 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 291 transitions. Word has length 61 [2021-11-23 01:52:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:29,298 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 291 transitions. [2021-11-23 01:52:29,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-23 01:52:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 291 transitions. [2021-11-23 01:52:29,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 01:52:29,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:29,301 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-11-23 01:52:29,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:29,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:29,522 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:29,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:29,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1884349724, now seen corresponding path program 1 times [2021-11-23 01:52:29,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:29,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966219172] [2021-11-23 01:52:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:29,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 01:52:29,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:29,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966219172] [2021-11-23 01:52:29,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966219172] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:52:29,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126262002] [2021-11-23 01:52:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:29,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:29,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:29,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:52:29,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 01:52:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:30,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-23 01:52:30,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:30,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 01:52:31,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126262002] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:52:31,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [686343269] [2021-11-23 01:52:31,456 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2021-11-23 01:52:31,456 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:52:31,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:52:31,468 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:52:31,468 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:52:37,447 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 41 for LOIs [2021-11-23 01:52:37,457 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2021-11-23 01:52:37,775 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 59 for LOIs [2021-11-23 01:52:38,042 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 38 for LOIs [2021-11-23 01:52:38,050 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 40 for LOIs [2021-11-23 01:52:38,060 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 35 for LOIs [2021-11-23 01:52:38,063 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:52:43,025 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6802#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 2147483648)) (= ~head~0.offset 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) (= 1 ~systemActive~0) (<= 0 ~methAndRunningLastTime~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= 0 ~head~0.base) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= 0 ~methaneLevelCritical~0) (<= ~head~0.base 0) (= |#NULL.offset| 0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (not (= ~methAndRunningLastTime~0 0)) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 2147483647) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| ~methaneLevelCritical~0) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 01:52:43,026 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 01:52:43,026 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:52:43,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 14] total 34 [2021-11-23 01:52:43,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650522393] [2021-11-23 01:52:43,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 01:52:43,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-23 01:52:43,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:43,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-23 01:52:43,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=3466, Unknown=0, NotChecked=0, Total=3906 [2021-11-23 01:52:43,031 INFO L87 Difference]: Start difference. First operand 259 states and 291 transitions. Second operand has 34 states, 31 states have (on average 3.4838709677419355) internal successors, (108), 28 states have internal predecessors, (108), 14 states have call successors, (24), 13 states have call predecessors, (24), 11 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2021-11-23 01:52:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:45,121 INFO L93 Difference]: Finished difference Result 826 states and 956 transitions. [2021-11-23 01:52:45,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 01:52:45,122 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 3.4838709677419355) internal successors, (108), 28 states have internal predecessors, (108), 14 states have call successors, (24), 13 states have call predecessors, (24), 11 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) Word has length 64 [2021-11-23 01:52:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:45,127 INFO L225 Difference]: With dead ends: 826 [2021-11-23 01:52:45,127 INFO L226 Difference]: Without dead ends: 629 [2021-11-23 01:52:45,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 148 SyntacticMatches, 5 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3237 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1060, Invalid=7496, Unknown=0, NotChecked=0, Total=8556 [2021-11-23 01:52:45,132 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 922 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:45,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [925 Valid, 779 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 01:52:45,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-11-23 01:52:45,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 505. [2021-11-23 01:52:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 348 states have (on average 1.1580459770114941) internal successors, (403), 372 states have internal predecessors, (403), 72 states have call successors, (72), 68 states have call predecessors, (72), 84 states have return successors, (91), 81 states have call predecessors, (91), 72 states have call successors, (91) [2021-11-23 01:52:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 566 transitions. [2021-11-23 01:52:45,183 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 566 transitions. Word has length 64 [2021-11-23 01:52:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:45,184 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 566 transitions. [2021-11-23 01:52:45,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 3.4838709677419355) internal successors, (108), 28 states have internal predecessors, (108), 14 states have call successors, (24), 13 states have call predecessors, (24), 11 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2021-11-23 01:52:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 566 transitions. [2021-11-23 01:52:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 01:52:45,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:45,188 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:45,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:45,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 01:52:45,401 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:45,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:45,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1403694762, now seen corresponding path program 1 times [2021-11-23 01:52:45,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:45,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265887935] [2021-11-23 01:52:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:45,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 49 proven. 55 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-23 01:52:45,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:45,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265887935] [2021-11-23 01:52:45,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265887935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:52:45,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122190365] [2021-11-23 01:52:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:45,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:45,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:45,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:52:45,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 01:52:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:45,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-23 01:52:45,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 69 proven. 42 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:52:46,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 72 proven. 25 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-23 01:52:47,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122190365] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:52:47,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1799647346] [2021-11-23 01:52:47,522 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2021-11-23 01:52:47,522 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:52:47,524 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:52:47,524 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:52:47,524 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:53:02,164 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 316 for LOIs [2021-11-23 01:53:02,226 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 44 for LOIs [2021-11-23 01:53:02,503 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 61 for LOIs [2021-11-23 01:53:02,740 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 24 for LOIs [2021-11-23 01:53:02,743 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 45 for LOIs [2021-11-23 01:53:02,751 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 37 for LOIs [2021-11-23 01:53:02,754 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:53:08,863 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9610#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 2147483648)) (= ~head~0.offset 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) (= 1 ~systemActive~0) (<= 0 ~methAndRunningLastTime~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= |old(~methAndRunningLastTime~0)| 1) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 1) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (not (= ~methAndRunningLastTime~0 0)) (<= ~methAndRunningLastTime~0 1) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| ~methaneLevelCritical~0) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 01:53:08,863 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 01:53:08,863 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:53:08,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 38 [2021-11-23 01:53:08,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244980263] [2021-11-23 01:53:08,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 01:53:08,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-23 01:53:08,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:53:08,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-23 01:53:08,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=3936, Unknown=0, NotChecked=0, Total=4422 [2021-11-23 01:53:08,867 INFO L87 Difference]: Start difference. First operand 505 states and 566 transitions. Second operand has 38 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 23 states have call successors, (35), 10 states have call predecessors, (35), 16 states have return successors, (36), 18 states have call predecessors, (36), 23 states have call successors, (36) [2021-11-23 01:53:09,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:09,773 INFO L93 Difference]: Finished difference Result 668 states and 760 transitions. [2021-11-23 01:53:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 01:53:09,776 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 23 states have call successors, (35), 10 states have call predecessors, (35), 16 states have return successors, (36), 18 states have call predecessors, (36), 23 states have call successors, (36) Word has length 109 [2021-11-23 01:53:09,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:09,777 INFO L225 Difference]: With dead ends: 668 [2021-11-23 01:53:09,777 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 01:53:09,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 281 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2583 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=745, Invalid=5261, Unknown=0, NotChecked=0, Total=6006 [2021-11-23 01:53:09,781 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 468 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:09,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 448 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 01:53:09,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 01:53:09,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 01:53:09,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 01:53:09,784 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2021-11-23 01:53:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:09,784 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 01:53:09,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 23 states have call successors, (35), 10 states have call predecessors, (35), 16 states have return successors, (36), 18 states have call predecessors, (36), 23 states have call successors, (36) [2021-11-23 01:53:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 01:53:09,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 01:53:09,788 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 01:53:09,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 01:53:10,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 01:53:10,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 01:53:12,661 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 400 406) no Hoare annotation was computed. [2021-11-23 01:53:12,661 INFO L861 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 400 406) the Hoare annotation is: true [2021-11-23 01:53:12,661 INFO L861 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 188 199) the Hoare annotation is: true [2021-11-23 01:53:12,661 INFO L858 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 188 199) no Hoare annotation was computed. [2021-11-23 01:53:12,661 INFO L861 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 200 208) the Hoare annotation is: true [2021-11-23 01:53:12,662 INFO L858 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 200 208) no Hoare annotation was computed. [2021-11-23 01:53:12,662 INFO L854 garLoopResultBuilder]: At program point L448(line 448) the Hoare annotation is: (let ((.cse3 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse2 (not (= |old(~pumpRunning~0)| 1)) .cse3 .cse4) (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 1)) .cse2))) [2021-11-23 01:53:12,662 INFO L854 garLoopResultBuilder]: At program point L940(line 940) the Hoare annotation is: (let ((.cse3 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse2 (not (= |old(~pumpRunning~0)| 1)) .cse3 .cse4) (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 1)) .cse2))) [2021-11-23 01:53:12,662 INFO L854 garLoopResultBuilder]: At program point L453(line 453) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= ~methAndRunningLastTime~0 0)) (.cse4 (not (= 1 ~systemActive~0))) (.cse5 (not (<= |old(~waterLevel~0)| 2))) (.cse6 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 (and .cse1 .cse2 (= ~waterLevel~0 1)) .cse3 (not (= |old(~waterLevel~0)| 1)) .cse4) (or .cse0 .cse3 .cse4 (and .cse1 .cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) .cse5 .cse6) (or .cse4 (not (= |old(~pumpRunning~0)| 1)) .cse5 .cse6))) [2021-11-23 01:53:12,663 INFO L854 garLoopResultBuilder]: At program point L453-1(lines 434 458) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse6 (not (= |old(~pumpRunning~0)| 1))) (.cse7 (= ~pumpRunning~0 0)) (.cse8 (= ~waterLevel~0 1)) (.cse4 (not (<= |old(~waterLevel~0)| 2))) (.cse5 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 .cse2 (and .cse3 (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) .cse4 .cse5) (or .cse1 .cse3 .cse2 (not (= ~methaneLevelCritical~0 0)) .cse6 .cse4 .cse5) (or .cse0 (and .cse7 .cse3 .cse8) .cse1 (not (= |old(~waterLevel~0)| 1)) .cse2) (or .cse2 .cse6 (and .cse7 (= |timeShift_processEnvironment_~tmp~4#1| 1) .cse8) .cse4 .cse5))) [2021-11-23 01:53:12,663 INFO L858 garLoopResultBuilder]: For program point L387-1(lines 387 393) no Hoare annotation was computed. [2021-11-23 01:53:12,663 INFO L858 garLoopResultBuilder]: For program point L288(lines 288 298) no Hoare annotation was computed. [2021-11-23 01:53:12,663 INFO L854 garLoopResultBuilder]: At program point L284(lines 284 301) the Hoare annotation is: (let ((.cse9 (= ~pumpRunning~0 0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse11 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (.cse13 (= ~methaneLevelCritical~0 0))) (let ((.cse6 (not (= |old(~waterLevel~0)| 1))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse10 (= ~waterLevel~0 1)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse7 (not .cse13)) (.cse12 (not (= |old(~pumpRunning~0)| 1))) (.cse8 (and .cse9 .cse3 .cse13 (not (= 0 ~systemActive~0)) .cse11)) (.cse4 (not (<= |old(~waterLevel~0)| 2))) (.cse5 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 .cse2 (and .cse3 (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) .cse4 .cse5) (or .cse0 .cse1 .cse6 .cse2 .cse7 .cse8) (or .cse0 (and .cse9 .cse3 .cse10) .cse1 .cse6 .cse2) (or .cse0 .cse1 .cse2 .cse7 .cse4 .cse11 .cse5) (or .cse2 .cse12 (and .cse9 (= |timeShift_processEnvironment_~tmp~4#1| 1) .cse10) .cse4 .cse5) (or .cse1 .cse2 .cse7 .cse12 .cse8 .cse4 .cse5)))) [2021-11-23 01:53:12,664 INFO L854 garLoopResultBuilder]: At program point L284-1(lines 276 304) the Hoare annotation is: (let ((.cse3 (= ~pumpRunning~0 0)) (.cse4 (= ~methAndRunningLastTime~0 0)) (.cse6 (not (= 0 ~systemActive~0))) (.cse13 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (.cse14 (= ~methaneLevelCritical~0 0))) (let ((.cse10 (not (= |old(~waterLevel~0)| 1))) (.cse5 (= ~waterLevel~0 1)) (.cse8 (not (= |old(~pumpRunning~0)| 0))) (.cse9 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse11 (not .cse14)) (.cse1 (not (= |old(~pumpRunning~0)| 1))) (.cse12 (and .cse3 .cse4 .cse14 .cse6 .cse13)) (.cse2 (not (<= |old(~waterLevel~0)| 2))) (.cse7 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 .cse2 (and .cse3 (= |timeShift_processEnvironment_~tmp~4#1| 1) .cse4 .cse5 .cse6) .cse7) (or .cse8 .cse9 .cse0 .cse2 (and (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) .cse7) (or .cse8 .cse9 .cse10 .cse0 .cse11 .cse12) (or .cse8 .cse9 .cse10 .cse0 (and .cse3 .cse4 .cse5 .cse6)) (or .cse8 .cse9 .cse0 (and .cse4 .cse13) .cse11 .cse2 .cse7) (or .cse9 .cse0 .cse11 .cse1 .cse12 .cse2 .cse7)))) [2021-11-23 01:53:12,664 INFO L858 garLoopResultBuilder]: For program point L289(lines 289 295) no Hoare annotation was computed. [2021-11-23 01:53:12,664 INFO L858 garLoopResultBuilder]: For program point L380-1(lines 379 398) no Hoare annotation was computed. [2021-11-23 01:53:12,664 INFO L854 garLoopResultBuilder]: At program point L442(lines 442 450) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 1))) (.cse2 (not (<= |old(~waterLevel~0)| 2))) (.cse3 (not (<= 2 |old(~waterLevel~0)|))) (.cse5 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 (and (= |timeShift_processEnvironment_~tmp~4#1| 1) (= ~waterLevel~0 1) (= ~pumpRunning~0 1)) .cse3) (or .cse4 (= ~methAndRunningLastTime~0 0) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2 .cse3) (or .cse5 .cse4 .cse0 .cse2 .cse3) (or .cse5 .cse4 (not (= |old(~waterLevel~0)| 1)) .cse0))) [2021-11-23 01:53:12,664 INFO L854 garLoopResultBuilder]: At program point L438(lines 438 455) the Hoare annotation is: (let ((.cse2 (not (= |old(~pumpRunning~0)| 1))) (.cse0 (= ~waterLevel~0 1)) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse8 (= ~pumpRunning~0 0)) (.cse6 (= ~methAndRunningLastTime~0 0)) (.cse3 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (not (<= 2 |old(~waterLevel~0)|)))) (and (or (and .cse0 (= ~pumpRunning~0 1)) .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse6 .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2 .cse3 .cse4) (or .cse7 (and .cse8 .cse6 .cse0) .cse5 (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse7 .cse5 .cse1 (and .cse8 .cse6 (= |old(~waterLevel~0)| ~waterLevel~0)) .cse3 .cse4))) [2021-11-23 01:53:12,665 INFO L854 garLoopResultBuilder]: At program point L282(line 282) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse6 (not (= |old(~pumpRunning~0)| 1))) (.cse7 (= ~pumpRunning~0 0)) (.cse8 (= ~waterLevel~0 1)) (.cse4 (not (<= |old(~waterLevel~0)| 2))) (.cse5 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 .cse2 (and .cse3 (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) .cse4 .cse5) (or .cse1 .cse3 .cse2 (not (= ~methaneLevelCritical~0 0)) .cse6 .cse4 .cse5) (or .cse0 (and .cse7 .cse3 .cse8) .cse1 (not (= |old(~waterLevel~0)| 1)) .cse2) (or .cse2 .cse6 (and .cse7 (= |timeShift_processEnvironment_~tmp~4#1| 1) .cse8) .cse4 .cse5))) [2021-11-23 01:53:12,665 INFO L858 garLoopResultBuilder]: For program point L282-1(line 282) no Hoare annotation was computed. [2021-11-23 01:53:12,665 INFO L854 garLoopResultBuilder]: At program point timeShiftENTRY(lines 376 399) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 1))) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse8 (= ~pumpRunning~0 0)) (.cse6 (= ~methAndRunningLastTime~0 0)) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 .cse2 (and .cse3 (= ~pumpRunning~0 1)) .cse4) (or .cse5 .cse6 .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2 .cse4) (or .cse7 (and .cse8 .cse6 (= ~waterLevel~0 1)) .cse5 (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse7 .cse5 .cse0 (and .cse8 .cse6 .cse3) .cse2 .cse4))) [2021-11-23 01:53:12,665 INFO L858 garLoopResultBuilder]: For program point timeShiftEXIT(lines 376 399) no Hoare annotation was computed. [2021-11-23 01:53:12,666 INFO L858 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 940) no Hoare annotation was computed. [2021-11-23 01:53:12,666 INFO L861 garLoopResultBuilder]: At program point L66-1(lines 66 70) the Hoare annotation is: true [2021-11-23 01:53:12,666 INFO L858 garLoopResultBuilder]: For program point cleanupEXIT(lines 52 81) no Hoare annotation was computed. [2021-11-23 01:53:12,666 INFO L861 garLoopResultBuilder]: At program point cleanupENTRY(lines 52 81) the Hoare annotation is: true [2021-11-23 01:53:12,666 INFO L861 garLoopResultBuilder]: At program point L62-2(lines 62 76) the Hoare annotation is: true [2021-11-23 01:53:12,666 INFO L861 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: true [2021-11-23 01:53:12,667 INFO L858 garLoopResultBuilder]: For program point L58-1(line 58) no Hoare annotation was computed. [2021-11-23 01:53:12,667 INFO L861 garLoopResultBuilder]: At program point L77(lines 52 81) the Hoare annotation is: true [2021-11-23 01:53:12,667 INFO L858 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2021-11-23 01:53:12,667 INFO L858 garLoopResultBuilder]: For program point L66(lines 66 70) no Hoare annotation was computed. [2021-11-23 01:53:12,667 INFO L854 garLoopResultBuilder]: At program point L362(lines 315 363) the Hoare annotation is: false [2021-11-23 01:53:12,667 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 01:53:12,668 INFO L858 garLoopResultBuilder]: For program point L317(lines 316 361) no Hoare annotation was computed. [2021-11-23 01:53:12,668 INFO L854 garLoopResultBuilder]: At program point L338(line 338) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0)) (.cse2 (= ~methAndRunningLastTime~0 0)) (.cse0 (= |ULTIMATE.start_main_~tmp~0#1| ~systemActive~0)) (.cse3 (= 1 ~systemActive~0)) (.cse4 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ~waterLevel~0 1)) (and .cse0 .cse1 .cse2 (= 2 ~waterLevel~0) .cse3 .cse4) (and .cse0 (<= 2 ~waterLevel~0) .cse3 .cse4 (<= ~waterLevel~0 2) (= ~pumpRunning~0 1)))) [2021-11-23 01:53:12,668 INFO L854 garLoopResultBuilder]: At program point L359(lines 316 361) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= |ULTIMATE.start_main_~tmp~0#1| 1) .cse0 .cse1 (= ~waterLevel~0 1)) (and (= |ULTIMATE.start_main_~tmp~0#1| ~systemActive~0) (= 2 ~waterLevel~0) .cse0 .cse1 (= ~pumpRunning~0 1)))) [2021-11-23 01:53:12,668 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 332) no Hoare annotation was computed. [2021-11-23 01:53:12,668 INFO L858 garLoopResultBuilder]: For program point L326-1(lines 326 332) no Hoare annotation was computed. [2021-11-23 01:53:12,669 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 01:53:12,669 INFO L854 garLoopResultBuilder]: At program point L352-2(lines 346 357) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse4 (= |ULTIMATE.start_main_~tmp~0#1| ~systemActive~0)) (.cse5 (= 2 ~waterLevel~0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1) .cse2 .cse3 (= ~waterLevel~0 1)) (and .cse4 .cse0 .cse1 .cse5 .cse2 .cse3) (and .cse4 .cse5 .cse2 .cse3 (= ~pumpRunning~0 1)))) [2021-11-23 01:53:12,669 INFO L858 garLoopResultBuilder]: For program point L336(lines 336 342) no Hoare annotation was computed. [2021-11-23 01:53:12,669 INFO L858 garLoopResultBuilder]: For program point L336-1(lines 336 342) no Hoare annotation was computed. [2021-11-23 01:53:12,669 INFO L854 garLoopResultBuilder]: At program point L142(lines 142 149) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_main_~tmp~0#1| 1) (= 1 ~systemActive~0) (= ~waterLevel~0 1)) [2021-11-23 01:53:12,669 INFO L861 garLoopResultBuilder]: At program point L365(lines 306 369) the Hoare annotation is: true [2021-11-23 01:53:12,670 INFO L861 garLoopResultBuilder]: At program point L142-2(lines 142 149) the Hoare annotation is: true [2021-11-23 01:53:12,670 INFO L854 garLoopResultBuilder]: At program point L328(line 328) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~0#1| ~systemActive~0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) .cse1 .cse2 (= ~waterLevel~0 1)) (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2 (<= ~waterLevel~0 2) (= ~pumpRunning~0 1)))) [2021-11-23 01:53:12,670 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 408 432) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 (not (<= 2 ~waterLevel~0)) (not (<= ~waterLevel~0 2)) .cse3) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3))) [2021-11-23 01:53:12,670 INFO L854 garLoopResultBuilder]: At program point L422(line 422) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~3#1| 0)) .cse1 .cse2) (or .cse0 .cse1 (not (<= 2 ~waterLevel~0)) (not (<= ~waterLevel~0 2)) .cse2))) [2021-11-23 01:53:12,671 INFO L854 garLoopResultBuilder]: At program point L416(lines 416 424) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0)) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 (and .cse1 (= |processEnvironment__wrappee__highWaterSensor_~tmp~3#1| 0)) .cse2 .cse3) (or .cse0 .cse2 (not (<= 2 ~waterLevel~0)) (not (<= ~waterLevel~0 2)) (and .cse1 (= |processEnvironment__wrappee__highWaterSensor_~tmp~3#1| 1)) .cse3))) [2021-11-23 01:53:12,671 INFO L854 garLoopResultBuilder]: At program point L412(lines 412 429) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 (not (<= 2 ~waterLevel~0)) (not (<= ~waterLevel~0 2)) .cse3) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3))) [2021-11-23 01:53:12,671 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 408 432) no Hoare annotation was computed. [2021-11-23 01:53:12,671 INFO L854 garLoopResultBuilder]: At program point L427(line 427) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 (not (<= 2 ~waterLevel~0)) (not (<= ~waterLevel~0 2)) .cse2))) [2021-11-23 01:53:12,671 INFO L858 garLoopResultBuilder]: For program point L427-1(lines 408 432) no Hoare annotation was computed. [2021-11-23 01:53:12,672 INFO L858 garLoopResultBuilder]: For program point waterRiseEXIT(lines 176 187) no Hoare annotation was computed. [2021-11-23 01:53:12,672 INFO L854 garLoopResultBuilder]: At program point waterRiseENTRY(lines 176 187) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= ~pumpRunning~0 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (= ~waterLevel~0 1) (not (= ~methAndRunningLastTime~0 0))) (or .cse0 (not (= ~pumpRunning~0 1)) (= |old(~waterLevel~0)| ~waterLevel~0) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2021-11-23 01:53:12,675 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:12,677 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 01:53:12,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:53:12 BoogieIcfgContainer [2021-11-23 01:53:12,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 01:53:12,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:53:12,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:53:12,714 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:53:12,714 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:25" (3/4) ... [2021-11-23 01:53:12,717 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 01:53:12,723 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2021-11-23 01:53:12,723 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2021-11-23 01:53:12,723 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2021-11-23 01:53:12,723 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2021-11-23 01:53:12,723 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2021-11-23 01:53:12,724 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 01:53:12,724 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2021-11-23 01:53:12,744 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 74 nodes and edges [2021-11-23 01:53:12,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2021-11-23 01:53:12,749 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-23 01:53:12,749 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 01:53:12,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 01:53:12,751 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 01:53:12,751 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 01:53:12,780 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) && ((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2021-11-23 01:53:12,782 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((waterLevel == 1 && pumpRunning == 1) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2021-11-23 01:53:12,782 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((methAndRunningLastTime == 0 && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2021-11-23 01:53:12,784 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(2 <= waterLevel)) || !(waterLevel <= 2)) || !(methAndRunningLastTime == 0)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) [2021-11-23 01:53:12,785 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((methAndRunningLastTime == 0 && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && !(0 == systemActive)) && tmp == 0))) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(waterLevel) <= 2)) || tmp == 0) || !(2 <= \old(waterLevel)))) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && !(0 == systemActive)) && tmp == 0)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2021-11-23 01:53:12,786 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || ((((pumpRunning == 0 && tmp == 1) && methAndRunningLastTime == 0) && waterLevel == 1) && !(0 == systemActive))) || !(2 <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && !(0 == systemActive)) && tmp == 0))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1) && !(0 == systemActive)))) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && tmp == 0)) || !(methaneLevelCritical == 0)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && !(0 == systemActive)) && tmp == 0)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2021-11-23 01:53:12,787 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) [2021-11-23 01:53:12,787 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || ((tmp == 1 && waterLevel == 1) && pumpRunning == 1)) || !(2 <= \old(waterLevel))) && ((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) [2021-11-23 01:53:12,788 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && tmp == 0)) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) && (((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 <= waterLevel)) || !(waterLevel <= 2)) || (pumpRunning == 0 && tmp == 1)) || !(methAndRunningLastTime == 0)) [2021-11-23 01:53:12,845 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 01:53:12,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:53:12,847 INFO L158 Benchmark]: Toolchain (without parser) took 48523.85ms. Allocated memory was 98.6MB in the beginning and 524.3MB in the end (delta: 425.7MB). Free memory was 64.0MB in the beginning and 441.3MB in the end (delta: -377.2MB). Peak memory consumption was 48.7MB. Max. memory is 16.1GB. [2021-11-23 01:53:12,848 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 98.6MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:53:12,848 INFO L158 Benchmark]: CACSL2BoogieTranslator took 618.28ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 63.8MB in the beginning and 109.2MB in the end (delta: -45.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 01:53:12,848 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.33ms. Allocated memory is still 144.7MB. Free memory was 109.2MB in the beginning and 107.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:53:12,849 INFO L158 Benchmark]: Boogie Preprocessor took 34.15ms. Allocated memory is still 144.7MB. Free memory was 107.0MB in the beginning and 105.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:53:12,850 INFO L158 Benchmark]: RCFGBuilder took 716.47ms. Allocated memory is still 144.7MB. Free memory was 104.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 01:53:12,850 INFO L158 Benchmark]: TraceAbstraction took 46938.95ms. Allocated memory was 144.7MB in the beginning and 524.3MB in the end (delta: 379.6MB). Free memory was 83.3MB in the beginning and 447.6MB in the end (delta: -364.3MB). Peak memory consumption was 288.6MB. Max. memory is 16.1GB. [2021-11-23 01:53:12,851 INFO L158 Benchmark]: Witness Printer took 133.26ms. Allocated memory is still 524.3MB. Free memory was 447.6MB in the beginning and 441.3MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:53:12,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 98.6MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 618.28ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 63.8MB in the beginning and 109.2MB in the end (delta: -45.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.33ms. Allocated memory is still 144.7MB. Free memory was 109.2MB in the beginning and 107.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.15ms. Allocated memory is still 144.7MB. Free memory was 107.0MB in the beginning and 105.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 716.47ms. Allocated memory is still 144.7MB. Free memory was 104.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 46938.95ms. Allocated memory was 144.7MB in the beginning and 524.3MB in the end (delta: 379.6MB). Free memory was 83.3MB in the beginning and 447.6MB in the end (delta: -364.3MB). Peak memory consumption was 288.6MB. Max. memory is 16.1GB. * Witness Printer took 133.26ms. Allocated memory is still 524.3MB. Free memory was 447.6MB in the beginning and 441.3MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 940]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.8s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1785 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1764 mSDsluCounter, 2199 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1994 mSDsCounter, 911 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2667 IncrementalHoareTripleChecker+Invalid, 3578 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 911 mSolverCounterUnsat, 605 mSDtfsCounter, 2667 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 721 GetRequests, 513 SyntacticMatches, 9 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5843 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=505occurred in iteration=10, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 296 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 33 LocationsWithAnnotation, 938 PreInvPairs, 997 NumberOfFragments, 1620 HoareAnnotationTreeSize, 938 FomulaSimplifications, 893 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 33 FomulaSimplificationsInter, 10805 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 714 NumberOfCodeBlocks, 714 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 871 ConstructedInterpolants, 0 QuantifiedInterpolants, 3401 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1478 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 16 InterpolantComputations, 9 PerfectInterpolantSequences, 383/532 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 306]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 284]: Loop Invariant Derived loop invariant: (((((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((methAndRunningLastTime == 0 && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && !(0 == systemActive)) && tmp == 0))) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(waterLevel) <= 2)) || tmp == 0) || !(2 <= \old(waterLevel)))) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && !(0 == systemActive)) && tmp == 0)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 438]: Loop Invariant Derived loop invariant: (((((((waterLevel == 1 && pumpRunning == 1) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 412]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(2 <= waterLevel)) || !(waterLevel <= 2)) || !(methAndRunningLastTime == 0)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 416]: Loop Invariant Derived loop invariant: ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && tmp == 0)) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) && (((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 <= waterLevel)) || !(waterLevel <= 2)) || (pumpRunning == 0 && tmp == 1)) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 442]: Loop Invariant Derived loop invariant: ((((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || ((tmp == 1 && waterLevel == 1) && pumpRunning == 1)) || !(2 <= \old(waterLevel))) && ((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) - InvariantResult [Line: 376]: Loop Invariant Derived loop invariant: ((((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) && ((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 276]: Loop Invariant Derived loop invariant: ((((((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || ((((pumpRunning == 0 && tmp == 1) && methAndRunningLastTime == 0) && waterLevel == 1) && !(0 == systemActive))) || !(2 <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && !(0 == systemActive)) && tmp == 0))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1) && !(0 == systemActive)))) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && tmp == 0)) || !(methaneLevelCritical == 0)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && !(0 == systemActive)) && tmp == 0)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 315]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 316]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == 1) && 1 == systemActive) && splverifierCounter == 0) && waterLevel == 1) || ((((tmp == systemActive && 2 == waterLevel) && 1 == systemActive) && splverifierCounter == 0) && pumpRunning == 1) - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 940]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == 1) && 1 == systemActive) && waterLevel == 1 - InvariantResult [Line: 434]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((methAndRunningLastTime == 0 && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) RESULT: Ultimate proved your program to be correct! [2021-11-23 01:53:12,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8b3691-2149-4501-9d54-ed900e97e3cd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE