./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product63.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_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/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_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product63.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/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_540492ce-27f6-4d27-abd0-85fcffd981cd/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 bff509ff7af2b9788fd6216f7196709183d48c973cf9a066c9793f96467b2abf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:52:20,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:52:21,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:52:21,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:52:21,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:52:21,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:52:21,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:52:21,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:52:21,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:52:21,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:52:21,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:52:21,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:52:21,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:52:21,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:52:21,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:52:21,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:52:21,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:52:21,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:52:21,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:52:21,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:52:21,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:52:21,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:52:21,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:52:21,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:52:21,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:52:21,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:52:21,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:52:21,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:52:21,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:52:21,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:52:21,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:52:21,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:52:21,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:52:21,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:52:21,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:52:21,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:52:21,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:52:21,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:52:21,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:52:21,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:52:21,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:52:21,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:52:21,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:52:21,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:52:21,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:52:21,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:52:21,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:52:21,195 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:52:21,195 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:52:21,196 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:52:21,196 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:52:21,196 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:52:21,197 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:52:21,197 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:52:21,198 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:52:21,198 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:52:21,198 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:52:21,198 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:52:21,199 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:52:21,199 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:52:21,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:52:21,200 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:52:21,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:52:21,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:52:21,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:52:21,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:52:21,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:52:21,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:52:21,203 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:52:21,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:52:21,204 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:52:21,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:52:21,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:52:21,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:52:21,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:52:21,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:52:21,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:52:21,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:52:21,206 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:52:21,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:52:21,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:52:21,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:52:21,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:52:21,207 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_540492ce-27f6-4d27-abd0-85fcffd981cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bff509ff7af2b9788fd6216f7196709183d48c973cf9a066c9793f96467b2abf [2021-11-23 03:52:21,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:52:21,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:52:21,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:52:21,486 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:52:21,487 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:52:21,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec2_product63.cil.c [2021-11-23 03:52:21,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/data/17ba3ca21/91f60efc3853416997ee36cc3fc03b22/FLAG322648e3c [2021-11-23 03:52:22,117 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:52:22,118 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/sv-benchmarks/c/product-lines/minepump_spec2_product63.cil.c [2021-11-23 03:52:22,131 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/data/17ba3ca21/91f60efc3853416997ee36cc3fc03b22/FLAG322648e3c [2021-11-23 03:52:22,430 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/data/17ba3ca21/91f60efc3853416997ee36cc3fc03b22 [2021-11-23 03:52:22,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:52:22,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:52:22,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:52:22,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:52:22,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:52:22,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:52:22" (1/1) ... [2021-11-23 03:52:22,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a7ba52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22, skipping insertion in model container [2021-11-23 03:52:22,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:52:22" (1/1) ... [2021-11-23 03:52:22,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:52:22,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:52:22,721 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_540492ce-27f6-4d27-abd0-85fcffd981cd/sv-benchmarks/c/product-lines/minepump_spec2_product63.cil.c[2985,2998] [2021-11-23 03:52:22,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:52:22,875 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:52:22,891 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_540492ce-27f6-4d27-abd0-85fcffd981cd/sv-benchmarks/c/product-lines/minepump_spec2_product63.cil.c[2985,2998] [2021-11-23 03:52:22,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:52:22,988 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:52:22,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22 WrapperNode [2021-11-23 03:52:22,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:52:22,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:52:22,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:52:22,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:52:22,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22" (1/1) ... [2021-11-23 03:52:23,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22" (1/1) ... [2021-11-23 03:52:23,062 INFO L137 Inliner]: procedures = 59, calls = 163, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 281 [2021-11-23 03:52:23,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:52:23,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:52:23,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:52:23,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:52:23,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22" (1/1) ... [2021-11-23 03:52:23,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22" (1/1) ... [2021-11-23 03:52:23,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22" (1/1) ... [2021-11-23 03:52:23,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22" (1/1) ... [2021-11-23 03:52:23,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22" (1/1) ... [2021-11-23 03:52:23,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22" (1/1) ... [2021-11-23 03:52:23,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22" (1/1) ... [2021-11-23 03:52:23,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:52:23,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:52:23,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:52:23,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:52:23,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22" (1/1) ... [2021-11-23 03:52:23,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:52:23,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:52:23,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:52:23,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:52:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:52:23,227 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 03:52:23,227 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 03:52:23,227 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-23 03:52:23,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-23 03:52:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 03:52:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 03:52:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 03:52:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 03:52:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:52:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:52:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 03:52:23,229 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 03:52:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-11-23 03:52:23,229 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-11-23 03:52:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-11-23 03:52:23,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-11-23 03:52:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-23 03:52:23,230 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-23 03:52:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:52:23,231 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 03:52:23,231 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 03:52:23,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:52:23,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:52:23,329 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:52:23,331 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:52:23,687 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:52:23,802 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:52:23,802 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:52:23,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:23 BoogieIcfgContainer [2021-11-23 03:52:23,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:52:23,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:52:23,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:52:23,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:52:23,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:52:22" (1/3) ... [2021-11-23 03:52:23,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a98381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:52:23, skipping insertion in model container [2021-11-23 03:52:23,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:22" (2/3) ... [2021-11-23 03:52:23,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a98381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:52:23, skipping insertion in model container [2021-11-23 03:52:23,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:23" (3/3) ... [2021-11-23 03:52:23,820 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product63.cil.c [2021-11-23 03:52:23,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:52:23,831 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:52:23,875 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:52:23,882 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 03:52:23,882 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:52:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 60 states have internal predecessors, (70), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-23 03:52:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:52:23,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:23,910 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 03:52:23,910 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:23,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1806156663, now seen corresponding path program 1 times [2021-11-23 03:52:23,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:23,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28690671] [2021-11-23 03:52:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:23,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:24,124 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 03:52:24,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:24,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28690671] [2021-11-23 03:52:24,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28690671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:24,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:24,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:52:24,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530907639] [2021-11-23 03:52:24,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:24,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:52:24,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:24,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:52:24,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:52:24,166 INFO L87 Difference]: Start difference. First operand has 80 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 60 states have internal predecessors, (70), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 19 states have call successors, (19) 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 03:52:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:24,236 INFO L93 Difference]: Finished difference Result 158 states and 217 transitions. [2021-11-23 03:52:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:52:24,239 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 03:52:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:24,249 INFO L225 Difference]: With dead ends: 158 [2021-11-23 03:52:24,249 INFO L226 Difference]: Without dead ends: 75 [2021-11-23 03:52:24,253 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 03:52:24,257 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:24,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:52:24,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-23 03:52:24,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-23 03:52:24,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 56 states have internal predecessors, (62), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 03:52:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 99 transitions. [2021-11-23 03:52:24,319 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 99 transitions. Word has length 17 [2021-11-23 03:52:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:24,319 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 99 transitions. [2021-11-23 03:52:24,320 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 03:52:24,320 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 99 transitions. [2021-11-23 03:52:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:52:24,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:24,323 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 03:52:24,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:52:24,323 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:24,332 INFO L85 PathProgramCache]: Analyzing trace with hash -869298979, now seen corresponding path program 1 times [2021-11-23 03:52:24,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:24,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603328304] [2021-11-23 03:52:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:24,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:24,417 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 03:52:24,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:24,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603328304] [2021-11-23 03:52:24,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603328304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:24,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:24,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:52:24,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119152788] [2021-11-23 03:52:24,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:24,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:52:24,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:24,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:52:24,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:24,423 INFO L87 Difference]: Start difference. First operand 75 states and 99 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 03:52:24,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:24,469 INFO L93 Difference]: Finished difference Result 122 states and 160 transitions. [2021-11-23 03:52:24,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:52:24,469 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 03:52:24,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:24,471 INFO L225 Difference]: With dead ends: 122 [2021-11-23 03:52:24,471 INFO L226 Difference]: Without dead ends: 67 [2021-11-23 03:52:24,472 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 03:52:24,474 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 14 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:24,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 129 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:52:24,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-23 03:52:24,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-23 03:52:24,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 51 states have internal predecessors, (56), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:52:24,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2021-11-23 03:52:24,488 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 18 [2021-11-23 03:52:24,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:24,489 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2021-11-23 03:52:24,489 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 03:52:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2021-11-23 03:52:24,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 03:52:24,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:24,491 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] [2021-11-23 03:52:24,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:52:24,492 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:24,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash 457868229, now seen corresponding path program 1 times [2021-11-23 03:52:24,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:24,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632332429] [2021-11-23 03:52:24,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:24,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:24,581 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 03:52:24,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:24,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632332429] [2021-11-23 03:52:24,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632332429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:24,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:24,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:52:24,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930638764] [2021-11-23 03:52:24,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:24,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:52:24,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:24,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:52:24,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:52:24,585 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 03:52:24,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:24,722 INFO L93 Difference]: Finished difference Result 180 states and 242 transitions. [2021-11-23 03:52:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:52:24,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 21 [2021-11-23 03:52:24,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:24,725 INFO L225 Difference]: With dead ends: 180 [2021-11-23 03:52:24,726 INFO L226 Difference]: Without dead ends: 115 [2021-11-23 03:52:24,727 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 03:52:24,728 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 102 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:24,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 184 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:52:24,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-23 03:52:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 98. [2021-11-23 03:52:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 75 states have internal predecessors, (85), 21 states have call successors, (21), 14 states have call predecessors, (21), 14 states have return successors, (22), 15 states have call predecessors, (22), 21 states have call successors, (22) [2021-11-23 03:52:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2021-11-23 03:52:24,751 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 21 [2021-11-23 03:52:24,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:24,752 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2021-11-23 03:52:24,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 03:52:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2021-11-23 03:52:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 03:52:24,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:24,754 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] [2021-11-23 03:52:24,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:52:24,754 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:24,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:24,755 INFO L85 PathProgramCache]: Analyzing trace with hash -373252238, now seen corresponding path program 1 times [2021-11-23 03:52:24,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:24,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777726182] [2021-11-23 03:52:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:24,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:24,833 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 03:52:24,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:24,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777726182] [2021-11-23 03:52:24,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777726182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:24,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:24,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:52:24,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126338954] [2021-11-23 03:52:24,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:24,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:52:24,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:24,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:52:24,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:52:24,837 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 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 03:52:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:25,031 INFO L93 Difference]: Finished difference Result 286 states and 379 transitions. [2021-11-23 03:52:25,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:52:25,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 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 24 [2021-11-23 03:52:25,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:25,037 INFO L225 Difference]: With dead ends: 286 [2021-11-23 03:52:25,040 INFO L226 Difference]: Without dead ends: 190 [2021-11-23 03:52:25,042 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 03:52:25,047 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 63 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:25,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 383 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:52:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-23 03:52:25,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2021-11-23 03:52:25,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.3478260869565217) internal successors, (155), 138 states have internal predecessors, (155), 40 states have call successors, (40), 26 states have call predecessors, (40), 26 states have return successors, (42), 28 states have call predecessors, (42), 40 states have call successors, (42) [2021-11-23 03:52:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 237 transitions. [2021-11-23 03:52:25,122 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 237 transitions. Word has length 24 [2021-11-23 03:52:25,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:25,122 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 237 transitions. [2021-11-23 03:52:25,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 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 03:52:25,123 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 237 transitions. [2021-11-23 03:52:25,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:52:25,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:25,126 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] [2021-11-23 03:52:25,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:52:25,127 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:25,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:25,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1749393350, now seen corresponding path program 1 times [2021-11-23 03:52:25,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:25,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054366703] [2021-11-23 03:52:25,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:25,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:25,181 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 03:52:25,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:25,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054366703] [2021-11-23 03:52:25,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054366703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:25,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:25,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:52:25,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936728280] [2021-11-23 03:52:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:25,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:52:25,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:25,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:52:25,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:25,185 INFO L87 Difference]: Start difference. First operand 182 states and 237 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:52:25,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:25,252 INFO L93 Difference]: Finished difference Result 278 states and 369 transitions. [2021-11-23 03:52:25,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:52:25,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-11-23 03:52:25,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:25,257 INFO L225 Difference]: With dead ends: 278 [2021-11-23 03:52:25,258 INFO L226 Difference]: Without dead ends: 276 [2021-11-23 03:52:25,258 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 03:52:25,260 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 63 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:25,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 158 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:52:25,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-23 03:52:25,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-23 03:52:25,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 174 states have (on average 1.3505747126436782) internal successors, (235), 209 states have internal predecessors, (235), 61 states have call successors, (61), 40 states have call predecessors, (61), 40 states have return successors, (70), 43 states have call predecessors, (70), 61 states have call successors, (70) [2021-11-23 03:52:25,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 366 transitions. [2021-11-23 03:52:25,296 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 366 transitions. Word has length 27 [2021-11-23 03:52:25,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:25,297 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 366 transitions. [2021-11-23 03:52:25,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:52:25,297 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 366 transitions. [2021-11-23 03:52:25,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 03:52:25,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:25,302 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] [2021-11-23 03:52:25,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:52:25,302 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:25,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:25,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2049322337, now seen corresponding path program 1 times [2021-11-23 03:52:25,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:25,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056100549] [2021-11-23 03:52:25,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:25,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:52:25,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:25,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056100549] [2021-11-23 03:52:25,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056100549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:25,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:25,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:52:25,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486913501] [2021-11-23 03:52:25,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:25,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:52:25,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:25,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:52:25,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:52:25,421 INFO L87 Difference]: Start difference. First operand 276 states and 366 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:52:25,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:25,768 INFO L93 Difference]: Finished difference Result 735 states and 991 transitions. [2021-11-23 03:52:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:52:25,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2021-11-23 03:52:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:25,775 INFO L225 Difference]: With dead ends: 735 [2021-11-23 03:52:25,775 INFO L226 Difference]: Without dead ends: 461 [2021-11-23 03:52:25,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:52:25,781 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 135 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:25,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 238 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:52:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-23 03:52:25,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 439. [2021-11-23 03:52:25,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 287 states have (on average 1.2334494773519165) internal successors, (354), 313 states have internal predecessors, (354), 75 states have call successors, (75), 63 states have call predecessors, (75), 76 states have return successors, (112), 79 states have call predecessors, (112), 75 states have call successors, (112) [2021-11-23 03:52:25,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 541 transitions. [2021-11-23 03:52:25,867 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 541 transitions. Word has length 47 [2021-11-23 03:52:25,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:25,868 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 541 transitions. [2021-11-23 03:52:25,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:52:25,868 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 541 transitions. [2021-11-23 03:52:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 03:52:25,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:25,879 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 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 03:52:25,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:52:25,880 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:25,885 INFO L85 PathProgramCache]: Analyzing trace with hash -689848674, now seen corresponding path program 1 times [2021-11-23 03:52:25,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:25,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574015699] [2021-11-23 03:52:25,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:25,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:52:25,999 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:25,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574015699] [2021-11-23 03:52:25,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574015699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:25,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:26,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:52:26,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493352877] [2021-11-23 03:52:26,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:26,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:52:26,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:52:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:52:26,002 INFO L87 Difference]: Start difference. First operand 439 states and 541 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-23 03:52:26,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:26,120 INFO L93 Difference]: Finished difference Result 880 states and 1084 transitions. [2021-11-23 03:52:26,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:52:26,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 82 [2021-11-23 03:52:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:26,125 INFO L225 Difference]: With dead ends: 880 [2021-11-23 03:52:26,126 INFO L226 Difference]: Without dead ends: 370 [2021-11-23 03:52:26,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:52:26,131 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 106 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:26,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 150 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:52:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-23 03:52:26,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2021-11-23 03:52:26,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 239 states have (on average 1.1924686192468619) internal successors, (285), 259 states have internal predecessors, (285), 64 states have call successors, (64), 52 states have call predecessors, (64), 66 states have return successors, (93), 69 states have call predecessors, (93), 64 states have call successors, (93) [2021-11-23 03:52:26,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 442 transitions. [2021-11-23 03:52:26,168 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 442 transitions. Word has length 82 [2021-11-23 03:52:26,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:26,168 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 442 transitions. [2021-11-23 03:52:26,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-23 03:52:26,169 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 442 transitions. [2021-11-23 03:52:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 03:52:26,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:26,174 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:26,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:52:26,174 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:26,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2101167635, now seen corresponding path program 1 times [2021-11-23 03:52:26,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:26,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999189348] [2021-11-23 03:52:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:26,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:52:26,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:26,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999189348] [2021-11-23 03:52:26,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999189348] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:52:26,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028957041] [2021-11-23 03:52:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:26,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:52:26,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:52:26,468 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:52:26,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:52:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:26,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 03:52:26,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:52:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:52:27,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:52:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 03:52:28,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028957041] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:52:28,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [622067742] [2021-11-23 03:52:28,158 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2021-11-23 03:52:28,158 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:52:28,163 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:52:28,168 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:52:28,169 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:52:39,479 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 309 for LOIs [2021-11-23 03:52:40,570 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 306 for LOIs [2021-11-23 03:52:40,921 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 306 for LOIs [2021-11-23 03:52:41,705 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 52 for LOIs [2021-11-23 03:52:41,791 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 26 for LOIs [2021-11-23 03:52:41,794 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 47 for LOIs [2021-11-23 03:52:41,802 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 28 for LOIs [2021-11-23 03:52:41,805 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:52:55,828 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6791#(and (<= ~cleanupTimeShifts~0 4) (<= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= 0 |#NULL.base|) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (<= 0 ~head~0.offset) (<= 1 ~systemActive~0) (<= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) (<= 0 ~methAndRunningLastTime~0) (<= 4 ~cleanupTimeShifts~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= |old(~methAndRunningLastTime~0)| 1) (<= 0 ~head~0.base) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= |#NULL.base| 0) (<= 0 ~methaneLevelCritical~0) (<= 0 ~pumpRunning~0) (<= ~head~0.base 0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 1) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (<= 0 |#NULL.offset|) (not (= ~methAndRunningLastTime~0 0)) (<= ~methAndRunningLastTime~0 1) (<= 0 |#StackHeapBarrier|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| ~methaneLevelCritical~0) (<= ~systemActive~0 1))' at error location [2021-11-23 03:52:55,828 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:52:55,829 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:52:55,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 11] total 30 [2021-11-23 03:52:55,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952067296] [2021-11-23 03:52:55,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:52:55,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-23 03:52:55,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:55,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-23 03:52:55,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=4046, Unknown=0, NotChecked=0, Total=4422 [2021-11-23 03:52:55,834 INFO L87 Difference]: Start difference. First operand 370 states and 442 transitions. Second operand has 30 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 9 states have call successors, (24), 6 states have call predecessors, (24), 16 states have return successors, (28), 15 states have call predecessors, (28), 9 states have call successors, (28) [2021-11-23 03:52:59,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:59,886 INFO L93 Difference]: Finished difference Result 1416 states and 1966 transitions. [2021-11-23 03:52:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-23 03:52:59,887 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 9 states have call successors, (24), 6 states have call predecessors, (24), 16 states have return successors, (28), 15 states have call predecessors, (28), 9 states have call successors, (28) Word has length 79 [2021-11-23 03:52:59,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:59,896 INFO L225 Difference]: With dead ends: 1416 [2021-11-23 03:52:59,896 INFO L226 Difference]: Without dead ends: 1004 [2021-11-23 03:52:59,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 195 SyntacticMatches, 10 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5476 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=1307, Invalid=13213, Unknown=0, NotChecked=0, Total=14520 [2021-11-23 03:52:59,904 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 1245 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 3139 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 4144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 3139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:59,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 1051 Invalid, 4144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1005 Valid, 3139 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 03:52:59,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-23 03:52:59,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 701. [2021-11-23 03:52:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 452 states have (on average 1.165929203539823) internal successors, (527), 487 states have internal predecessors, (527), 121 states have call successors, (121), 99 states have call predecessors, (121), 127 states have return successors, (177), 132 states have call predecessors, (177), 121 states have call successors, (177) [2021-11-23 03:53:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 825 transitions. [2021-11-23 03:53:00,001 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 825 transitions. Word has length 79 [2021-11-23 03:53:00,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:00,002 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 825 transitions. [2021-11-23 03:53:00,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 9 states have call successors, (24), 6 states have call predecessors, (24), 16 states have return successors, (28), 15 states have call predecessors, (28), 9 states have call successors, (28) [2021-11-23 03:53:00,002 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 825 transitions. [2021-11-23 03:53:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 03:53:00,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:00,005 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 03:53:00,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:53:00,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:53:00,212 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:00,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:00,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1283006198, now seen corresponding path program 1 times [2021-11-23 03:53:00,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:00,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272705418] [2021-11-23 03:53:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:00,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-23 03:53:00,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:00,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272705418] [2021-11-23 03:53:00,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272705418] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:53:00,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616813065] [2021-11-23 03:53:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:00,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:53:00,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:53:00,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:53:00,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:53:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:00,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:53:00,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:53:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 03:53:00,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:53:00,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616813065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:00,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:53:00,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-11-23 03:53:00,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22156403] [2021-11-23 03:53:00,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:00,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:53:00,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:00,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:53:00,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:53:00,601 INFO L87 Difference]: Start difference. First operand 701 states and 825 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:53:00,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:00,754 INFO L93 Difference]: Finished difference Result 1175 states and 1427 transitions. [2021-11-23 03:53:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:53:00,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2021-11-23 03:53:00,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:00,767 INFO L225 Difference]: With dead ends: 1175 [2021-11-23 03:53:00,767 INFO L226 Difference]: Without dead ends: 583 [2021-11-23 03:53:00,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:53:00,773 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 52 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:00,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 212 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:53:00,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-23 03:53:00,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 568. [2021-11-23 03:53:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 370 states have (on average 1.1567567567567567) internal successors, (428), 396 states have internal predecessors, (428), 98 states have call successors, (98), 81 states have call predecessors, (98), 99 states have return successors, (132), 107 states have call predecessors, (132), 98 states have call successors, (132) [2021-11-23 03:53:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 658 transitions. [2021-11-23 03:53:00,823 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 658 transitions. Word has length 86 [2021-11-23 03:53:00,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:00,824 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 658 transitions. [2021-11-23 03:53:00,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:53:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 658 transitions. [2021-11-23 03:53:00,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-23 03:53:00,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:00,828 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:00,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 03:53:01,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 03:53:01,052 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:01,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:01,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1143825443, now seen corresponding path program 1 times [2021-11-23 03:53:01,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:01,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556629083] [2021-11-23 03:53:01,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:01,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-23 03:53:01,184 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:01,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556629083] [2021-11-23 03:53:01,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556629083] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:53:01,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116234171] [2021-11-23 03:53:01,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:01,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:53:01,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:53:01,192 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:53:01,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:53:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:01,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 03:53:01,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:53:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-23 03:53:01,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:53:01,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116234171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:01,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:53:01,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 15 [2021-11-23 03:53:01,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521468737] [2021-11-23 03:53:01,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:01,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:53:01,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:01,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:53:01,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:53:01,543 INFO L87 Difference]: Start difference. First operand 568 states and 658 transitions. Second operand has 11 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (17), 3 states have call predecessors, (17), 6 states have return successors, (18), 6 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 03:53:01,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:01,919 INFO L93 Difference]: Finished difference Result 1175 states and 1374 transitions. [2021-11-23 03:53:01,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 03:53:01,919 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (17), 3 states have call predecessors, (17), 6 states have return successors, (18), 6 states have call predecessors, (18), 3 states have call successors, (18) Word has length 122 [2021-11-23 03:53:01,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:01,921 INFO L225 Difference]: With dead ends: 1175 [2021-11-23 03:53:01,922 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:53:01,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:53:01,926 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 57 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:01,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 401 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:53:01,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:53:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:53:01,928 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 03:53:01,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:53:01,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2021-11-23 03:53:01,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:01,929 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:53:01,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (17), 3 states have call predecessors, (17), 6 states have return successors, (18), 6 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 03:53:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:53:01,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:53:01,932 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:53:01,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:53:02,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 03:53:02,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:53:06,491 INFO L854 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 521 528) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 0 ~systemActive~0)) [2021-11-23 03:53:06,491 INFO L858 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 521 528) no Hoare annotation was computed. [2021-11-23 03:53:06,491 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 411 417) no Hoare annotation was computed. [2021-11-23 03:53:06,491 INFO L861 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 411 417) the Hoare annotation is: true [2021-11-23 03:53:06,492 INFO L854 garLoopResultBuilder]: At program point L459(line 459) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1))) [2021-11-23 03:53:06,492 INFO L854 garLoopResultBuilder]: At program point L455(line 455) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1))) [2021-11-23 03:53:06,492 INFO L858 garLoopResultBuilder]: For program point L453(lines 453 461) no Hoare annotation was computed. [2021-11-23 03:53:06,492 INFO L854 garLoopResultBuilder]: At program point L449(lines 449 466) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 .cse1))) [2021-11-23 03:53:06,492 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 445 469) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 .cse1))) [2021-11-23 03:53:06,492 INFO L854 garLoopResultBuilder]: At program point L464(line 464) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2) (or (not .cse0) (= ~pumpRunning~0 0) .cse1 .cse2))) [2021-11-23 03:53:06,493 INFO L858 garLoopResultBuilder]: For program point L464-1(lines 445 469) no Hoare annotation was computed. [2021-11-23 03:53:06,493 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 445 469) no Hoare annotation was computed. [2021-11-23 03:53:06,493 INFO L854 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 237 248) the Hoare annotation is: (or (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0) (= 0 ~systemActive~0) (not (= ~methAndRunningLastTime~0 0))) [2021-11-23 03:53:06,493 INFO L858 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 237 248) no Hoare annotation was computed. [2021-11-23 03:53:06,493 INFO L861 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 249 257) the Hoare annotation is: true [2021-11-23 03:53:06,493 INFO L858 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 249 257) no Hoare annotation was computed. [2021-11-23 03:53:06,493 INFO L854 garLoopResultBuilder]: At program point L481(line 481) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methAndRunningLastTime~0 0) (not (= ~pumpRunning~0 0)) (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0)) .cse1) (or (not (= |old(~pumpRunning~0)| 0)) (not .cse1)))) [2021-11-23 03:53:06,493 INFO L854 garLoopResultBuilder]: At program point L477(line 477) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methAndRunningLastTime~0 0) (not (= ~pumpRunning~0 0)))) (or (not (= |old(~pumpRunning~0)| 0)) (not .cse0)))) [2021-11-23 03:53:06,494 INFO L858 garLoopResultBuilder]: For program point L477-1(line 477) no Hoare annotation was computed. [2021-11-23 03:53:06,494 INFO L858 garLoopResultBuilder]: For program point L188(lines 188 198) no Hoare annotation was computed. [2021-11-23 03:53:06,494 INFO L854 garLoopResultBuilder]: At program point L184(lines 184 201) the Hoare annotation is: (let ((.cse7 (= |old(~pumpRunning~0)| 0)) (.cse12 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse10 (= ~methAndRunningLastTime~0 0)) (.cse6 (= ~pumpRunning~0 0)) (.cse9 (= ~methaneLevelCritical~0 0)) (.cse11 (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0)) (.cse3 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| ~methaneLevelCritical~0))) (let ((.cse5 (and .cse12 .cse10 (not .cse6) .cse9 .cse11 .cse3)) (.cse4 (and .cse12 .cse6)) (.cse2 (= 0 ~systemActive~0)) (.cse0 (not .cse7)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse8 (not .cse9))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse4 (not .cse2)) (or .cse1 .cse5 (and .cse6 .cse3) .cse7 .cse8 .cse2) (or .cse1 .cse5 (and .cse9 (= ~pumpRunning~0 1)) .cse4 .cse2 (and .cse6 .cse10 .cse11)) (or .cse0 .cse1 (and .cse10 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) .cse8)))) [2021-11-23 03:53:06,494 INFO L854 garLoopResultBuilder]: At program point L184-1(lines 176 204) the Hoare annotation is: (let ((.cse10 (= |old(~pumpRunning~0)| 0)) (.cse7 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse11 (= ~pumpRunning~0 0)) (.cse6 (= ~methAndRunningLastTime~0 0)) (.cse8 (= ~methaneLevelCritical~0 0))) (let ((.cse2 (not .cse8)) (.cse3 (and .cse7 .cse11 .cse6)) (.cse0 (not .cse10)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse5 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| ~methaneLevelCritical~0)) (.cse4 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (or .cse0 .cse3 (not .cse4)) (or .cse1 .cse2 .cse4 .cse5) (or .cse0 .cse1 (and .cse6 (= ~pumpRunning~0 1)) .cse3) (let ((.cse9 (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (or (and .cse7 .cse6 .cse8 .cse9) .cse1 .cse10 .cse4 (and .cse11 .cse6 .cse9))) (or .cse0 .cse1 .cse8 (and .cse11 (= ~pumpRunning~0 |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) .cse5) .cse4)))) [2021-11-23 03:53:06,495 INFO L854 garLoopResultBuilder]: At program point L490(line 490) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse3 (not .cse1)) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse0 (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0))) (or .cse3 (not .cse2))))) [2021-11-23 03:53:06,495 INFO L854 garLoopResultBuilder]: At program point L490-1(lines 471 495) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse5 (not .cse1)) (.cse4 (= 0 ~systemActive~0))) (and (let ((.cse3 (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (or .cse0 .cse1 (and .cse2 .cse3) .cse4 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse3))) (or .cse5 .cse2 .cse0 (= ~pumpRunning~0 1)) (let ((.cse6 (= ~methAndRunningLastTime~0 0))) (or .cse0 .cse4 (and .cse6 (= ~methaneLevelCritical~0 0)) (and .cse2 .cse6))) (or .cse5 (not .cse4))))) [2021-11-23 03:53:06,495 INFO L858 garLoopResultBuilder]: For program point L391-1(lines 390 409) no Hoare annotation was computed. [2021-11-23 03:53:06,495 INFO L854 garLoopResultBuilder]: At program point L160(line 160) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0) (or (not (= |old(~pumpRunning~0)| 0)) (not .cse0)))) [2021-11-23 03:53:06,495 INFO L858 garLoopResultBuilder]: For program point L189(lines 189 195) no Hoare annotation was computed. [2021-11-23 03:53:06,495 INFO L858 garLoopResultBuilder]: For program point L479(lines 479 487) no Hoare annotation was computed. [2021-11-23 03:53:06,496 INFO L858 garLoopResultBuilder]: For program point L475(lines 475 492) no Hoare annotation was computed. [2021-11-23 03:53:06,496 INFO L854 garLoopResultBuilder]: At program point L182(line 182) the Hoare annotation is: (let ((.cse4 (= |old(~pumpRunning~0)| 0))) (let ((.cse3 (= ~methaneLevelCritical~0 0)) (.cse2 (= ~methAndRunningLastTime~0 0)) (.cse7 (= 0 ~systemActive~0)) (.cse0 (not .cse4)) (.cse5 (= ~pumpRunning~0 0)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0)))) (and (or .cse0 .cse1 .cse2 (not .cse3)) (let ((.cse6 (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (or .cse1 .cse4 (and .cse5 .cse6) .cse7 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse6))) (or .cse0 .cse5 (not .cse7)) (or .cse5 .cse1 .cse3 .cse7) (or .cse1 .cse2 .cse7) (or .cse0 .cse5 .cse1 (= ~pumpRunning~0 1))))) [2021-11-23 03:53:06,496 INFO L858 garLoopResultBuilder]: For program point L182-1(line 182) no Hoare annotation was computed. [2021-11-23 03:53:06,496 INFO L854 garLoopResultBuilder]: At program point timeShiftENTRY(lines 387 410) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (= ~pumpRunning~0 0) (not .cse1)) (or .cse0 .cse2 .cse3) (or .cse2 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse3) .cse1))) [2021-11-23 03:53:06,496 INFO L858 garLoopResultBuilder]: For program point L398-1(lines 398 404) no Hoare annotation was computed. [2021-11-23 03:53:06,496 INFO L858 garLoopResultBuilder]: For program point timeShiftEXIT(lines 387 410) no Hoare annotation was computed. [2021-11-23 03:53:06,496 INFO L858 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 160) no Hoare annotation was computed. [2021-11-23 03:53:06,496 INFO L854 garLoopResultBuilder]: At program point L485(line 485) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methAndRunningLastTime~0 0) (not (= ~pumpRunning~0 0)) (= ~methaneLevelCritical~0 0) (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0)) .cse0) (or (not (= |old(~pumpRunning~0)| 0)) (not .cse0)))) [2021-11-23 03:53:06,496 INFO L861 garLoopResultBuilder]: At program point L66-1(lines 66 70) the Hoare annotation is: true [2021-11-23 03:53:06,496 INFO L858 garLoopResultBuilder]: For program point cleanupEXIT(lines 52 81) no Hoare annotation was computed. [2021-11-23 03:53:06,497 INFO L861 garLoopResultBuilder]: At program point cleanupENTRY(lines 52 81) the Hoare annotation is: true [2021-11-23 03:53:06,497 INFO L861 garLoopResultBuilder]: At program point L62-2(lines 62 76) the Hoare annotation is: true [2021-11-23 03:53:06,497 INFO L861 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: true [2021-11-23 03:53:06,497 INFO L858 garLoopResultBuilder]: For program point L58-1(line 58) no Hoare annotation was computed. [2021-11-23 03:53:06,497 INFO L861 garLoopResultBuilder]: At program point L77(lines 52 81) the Hoare annotation is: true [2021-11-23 03:53:06,497 INFO L858 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2021-11-23 03:53:06,497 INFO L858 garLoopResultBuilder]: For program point L66(lines 66 70) no Hoare annotation was computed. [2021-11-23 03:53:06,497 INFO L858 garLoopResultBuilder]: For program point L345(lines 345 351) no Hoare annotation was computed. [2021-11-23 03:53:06,497 INFO L858 garLoopResultBuilder]: For program point L345-1(lines 345 351) no Hoare annotation was computed. [2021-11-23 03:53:06,498 INFO L854 garLoopResultBuilder]: At program point L370(lines 325 372) the Hoare annotation is: (let ((.cse0 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1) (and .cse0 (= ~methaneLevelCritical~0 0) .cse1 (not (= 0 ~systemActive~0))))) [2021-11-23 03:53:06,498 INFO L854 garLoopResultBuilder]: At program point L337(line 337) the Hoare annotation is: (let ((.cse0 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1) (and .cse0 (= ~methaneLevelCritical~0 0) .cse1 (not (= 0 ~systemActive~0))))) [2021-11-23 03:53:06,498 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 03:53:06,498 INFO L858 garLoopResultBuilder]: For program point L627(lines 627 633) no Hoare annotation was computed. [2021-11-23 03:53:06,498 INFO L854 garLoopResultBuilder]: At program point L627-1(lines 627 633) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (not (= 0 ~systemActive~0))) (and .cse0 (= ~methAndRunningLastTime~0 0) .cse1))) [2021-11-23 03:53:06,498 INFO L858 garLoopResultBuilder]: For program point L326(lines 325 372) no Hoare annotation was computed. [2021-11-23 03:53:06,498 INFO L858 garLoopResultBuilder]: For program point L355(lines 355 368) no Hoare annotation was computed. [2021-11-23 03:53:06,498 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 03:53:06,498 INFO L854 garLoopResultBuilder]: At program point L347(line 347) the Hoare annotation is: (let ((.cse0 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (not (= 0 ~systemActive~0))) (and (= ~pumpRunning~0 0) .cse0 .cse1))) [2021-11-23 03:53:06,498 INFO L861 garLoopResultBuilder]: At program point L376(lines 315 380) the Hoare annotation is: true [2021-11-23 03:53:06,498 INFO L858 garLoopResultBuilder]: For program point L335(lines 335 341) no Hoare annotation was computed. [2021-11-23 03:53:06,498 INFO L858 garLoopResultBuilder]: For program point L335-1(lines 335 341) no Hoare annotation was computed. [2021-11-23 03:53:06,499 INFO L854 garLoopResultBuilder]: At program point L629(line 629) the Hoare annotation is: (and (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (not (= 0 ~systemActive~0))) [2021-11-23 03:53:06,499 INFO L854 garLoopResultBuilder]: At program point L373(lines 324 374) the Hoare annotation is: false [2021-11-23 03:53:06,499 INFO L854 garLoopResultBuilder]: At program point L142(lines 142 149) the Hoare annotation is: (and (= |ULTIMATE.start_main_~tmp~0#1| ~systemActive~0) (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_main_~tmp~0#1| 1)) [2021-11-23 03:53:06,499 INFO L861 garLoopResultBuilder]: At program point L142-2(lines 142 149) the Hoare annotation is: true [2021-11-23 03:53:06,499 INFO L858 garLoopResultBuilder]: For program point L361(lines 361 367) no Hoare annotation was computed. [2021-11-23 03:53:06,499 INFO L854 garLoopResultBuilder]: At program point L361-2(lines 355 368) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse1 (= 0 ~systemActive~0))) (or (and (= ~methAndRunningLastTime~0 0) .cse0 (not .cse1)) (and (= ~pumpRunning~0 0) .cse0 .cse1))) [2021-11-23 03:53:06,500 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 419 443) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 .cse1))) [2021-11-23 03:53:06,500 INFO L854 garLoopResultBuilder]: At program point L438(line 438) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1))) [2021-11-23 03:53:06,500 INFO L858 garLoopResultBuilder]: For program point L438-1(lines 419 443) no Hoare annotation was computed. [2021-11-23 03:53:06,500 INFO L854 garLoopResultBuilder]: At program point L509(line 509) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2) (or (not .cse0) (= ~pumpRunning~0 0) .cse1 .cse2))) [2021-11-23 03:53:06,500 INFO L854 garLoopResultBuilder]: At program point L509-1(line 509) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not .cse0) (and (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 |processEnvironment__wrappee__highWaterSensor_activatePump_#t~ret19#1|)) .cse1 .cse2) (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2))) [2021-11-23 03:53:06,501 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 419 443) no Hoare annotation was computed. [2021-11-23 03:53:06,501 INFO L854 garLoopResultBuilder]: At program point L433(line 433) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2) (or (not .cse0) (= ~pumpRunning~0 0) .cse1 .cse2))) [2021-11-23 03:53:06,501 INFO L858 garLoopResultBuilder]: For program point L427(lines 427 435) no Hoare annotation was computed. [2021-11-23 03:53:06,501 INFO L854 garLoopResultBuilder]: At program point L423(lines 423 440) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 .cse1))) [2021-11-23 03:53:06,501 INFO L858 garLoopResultBuilder]: For program point waterRiseEXIT(lines 225 236) no Hoare annotation was computed. [2021-11-23 03:53:06,501 INFO L861 garLoopResultBuilder]: At program point waterRiseENTRY(lines 225 236) the Hoare annotation is: true [2021-11-23 03:53:06,501 INFO L861 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 529 539) the Hoare annotation is: true [2021-11-23 03:53:06,501 INFO L858 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 529 539) no Hoare annotation was computed. [2021-11-23 03:53:06,501 INFO L861 garLoopResultBuilder]: At program point L534(line 534) the Hoare annotation is: true [2021-11-23 03:53:06,501 INFO L858 garLoopResultBuilder]: For program point L534-1(line 534) no Hoare annotation was computed. [2021-11-23 03:53:06,504 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:06,505 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:53:06,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:53:06 BoogieIcfgContainer [2021-11-23 03:53:06,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:53:06,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:53:06,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:53:06,537 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:53:06,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:23" (3/4) ... [2021-11-23 03:53:06,540 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:53:06,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2021-11-23 03:53:06,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2021-11-23 03:53:06,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2021-11-23 03:53:06,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2021-11-23 03:53:06,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2021-11-23 03:53:06,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2021-11-23 03:53:06,547 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:53:06,547 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2021-11-23 03:53:06,547 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2021-11-23 03:53:06,547 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2021-11-23 03:53:06,558 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 79 nodes and edges [2021-11-23 03:53:06,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2021-11-23 03:53:06,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-23 03:53:06,560 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 03:53:06,561 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 03:53:06,562 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:53:06,562 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:53:06,587 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && ((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0)) && ((!(\old(methAndRunningLastTime) == 0) || (pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0)) || 0 == systemActive) [2021-11-23 03:53:06,588 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(methAndRunningLastTime) == 0) || \old(pumpRunning) == 0) || (pumpRunning == 0 && tmp == methaneLevelCritical)) || 0 == systemActive) || (pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || pumpRunning == 1)) && (((!(\old(methAndRunningLastTime) == 0) || 0 == systemActive) || (methAndRunningLastTime == 0 && methaneLevelCritical == 0)) || (pumpRunning == 0 && methAndRunningLastTime == 0))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2021-11-23 03:53:06,588 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(methAndRunningLastTime == 0)) [2021-11-23 03:53:06,589 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || 0 == systemActive) || tmp == methaneLevelCritical) && ((!(\old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && pumpRunning == 0)) || !(0 == systemActive))) && (((((!(\old(methAndRunningLastTime) == 0) || (((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && !(pumpRunning == 0)) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) || (pumpRunning == 0 && tmp == methaneLevelCritical)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive)) && (((((!(\old(methAndRunningLastTime) == 0) || (((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && !(pumpRunning == 0)) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) || (methaneLevelCritical == 0 && pumpRunning == 1)) || (pumpRunning == \old(pumpRunning) && pumpRunning == 0)) || 0 == systemActive) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0 && tmp == 0)) || !(methaneLevelCritical == 0)) [2021-11-23 03:53:06,589 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(methAndRunningLastTime == 0)) [2021-11-23 03:53:06,589 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(methaneLevelCritical == 0)) || tmp == 0) && ((!(\old(pumpRunning) == 0) || ((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0)) || !(0 == systemActive))) && (((!(\old(methAndRunningLastTime) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) || tmp == methaneLevelCritical)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0 && pumpRunning == 1)) || ((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0))) && (((((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) || !(\old(methAndRunningLastTime) == 0)) || \old(pumpRunning) == 0) || 0 == systemActive) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methaneLevelCritical == 0) || ((pumpRunning == 0 && pumpRunning == tmp___0) && tmp == methaneLevelCritical)) || 0 == systemActive) [2021-11-23 03:53:06,590 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && methaneLevelCritical == aux-isMethaneAlarm()-aux)) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && (((\old(pumpRunning) == 0 || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(methAndRunningLastTime == 0)) [2021-11-23 03:53:06,591 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(\old(methAndRunningLastTime) == 0) || 0 == systemActive) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2021-11-23 03:53:06,623 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:53:06,623 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:53:06,624 INFO L158 Benchmark]: Toolchain (without parser) took 44189.89ms. Allocated memory was 100.7MB in the beginning and 377.5MB in the end (delta: 276.8MB). Free memory was 65.7MB in the beginning and 329.1MB in the end (delta: -263.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2021-11-23 03:53:06,624 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 100.7MB. Free memory was 53.4MB in the beginning and 53.3MB in the end (delta: 49.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:53:06,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 550.22ms. Allocated memory is still 100.7MB. Free memory was 65.3MB in the beginning and 67.2MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:53:06,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.78ms. Allocated memory is still 100.7MB. Free memory was 67.2MB in the beginning and 64.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 03:53:06,625 INFO L158 Benchmark]: Boogie Preprocessor took 31.08ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 63.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:53:06,626 INFO L158 Benchmark]: RCFGBuilder took 710.96ms. Allocated memory was 100.7MB in the beginning and 138.4MB in the end (delta: 37.7MB). Free memory was 62.6MB in the beginning and 109.3MB in the end (delta: -46.7MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2021-11-23 03:53:06,626 INFO L158 Benchmark]: TraceAbstraction took 42728.38ms. Allocated memory was 138.4MB in the beginning and 377.5MB in the end (delta: 239.1MB). Free memory was 108.6MB in the beginning and 336.5MB in the end (delta: -227.9MB). Peak memory consumption was 228.8MB. Max. memory is 16.1GB. [2021-11-23 03:53:06,627 INFO L158 Benchmark]: Witness Printer took 86.92ms. Allocated memory is still 377.5MB. Free memory was 336.5MB in the beginning and 329.1MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 03:53:06,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 100.7MB. Free memory was 53.4MB in the beginning and 53.3MB in the end (delta: 49.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 550.22ms. Allocated memory is still 100.7MB. Free memory was 65.3MB in the beginning and 67.2MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.78ms. Allocated memory is still 100.7MB. Free memory was 67.2MB in the beginning and 64.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.08ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 63.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 710.96ms. Allocated memory was 100.7MB in the beginning and 138.4MB in the end (delta: 37.7MB). Free memory was 62.6MB in the beginning and 109.3MB in the end (delta: -46.7MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * TraceAbstraction took 42728.38ms. Allocated memory was 138.4MB in the beginning and 377.5MB in the end (delta: 239.1MB). Free memory was 108.6MB in the beginning and 336.5MB in the end (delta: -227.9MB). Peak memory consumption was 228.8MB. Max. memory is 16.1GB. * Witness Printer took 86.92ms. Allocated memory is still 377.5MB. Free memory was 336.5MB in the beginning and 329.1MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. 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: 160]: 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 11 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42.6s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1859 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1837 mSDsluCounter, 2993 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2396 mSDsCounter, 1116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4301 IncrementalHoareTripleChecker+Invalid, 5417 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1116 mSolverCounterUnsat, 946 mSDtfsCounter, 4301 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 598 GetRequests, 419 SyntacticMatches, 10 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5526 ImplicationChecksByTransitivity, 16.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=701occurred in iteration=8, InterpolantAutomatonStates: 117, 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, 10 MinimizatonAttempts, 365 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 1756 PreInvPairs, 1978 NumberOfFragments, 1159 HoareAnnotationTreeSize, 1756 FomulaSimplifications, 4331 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 44 FomulaSimplificationsInter, 22277 FormulaSimplificationTreeSizeReductionInter, 3.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 810 NumberOfCodeBlocks, 810 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 875 ConstructedInterpolants, 0 QuantifiedInterpolants, 2054 SizeOfPredicates, 19 NumberOfNonLiveVariables, 1563 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 14 InterpolantComputations, 9 PerfectInterpolantSequences, 418/458 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: 471]: Loop Invariant Derived loop invariant: ((((((!(\old(methAndRunningLastTime) == 0) || \old(pumpRunning) == 0) || (pumpRunning == 0 && tmp == methaneLevelCritical)) || 0 == systemActive) || (pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || pumpRunning == 1)) && (((!(\old(methAndRunningLastTime) == 0) || 0 == systemActive) || (methAndRunningLastTime == 0 && methaneLevelCritical == 0)) || (pumpRunning == 0 && methAndRunningLastTime == 0))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 449]: Loop Invariant Derived loop invariant: (((pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 387]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && ((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0)) && ((!(\old(methAndRunningLastTime) == 0) || (pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0)) || 0 == systemActive) - InvariantResult [Line: 325]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) || (((methAndRunningLastTime == 0 && methaneLevelCritical == 0) && splverifierCounter == 0) && !(0 == systemActive)) - InvariantResult [Line: 509]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && methaneLevelCritical == aux-isMethaneAlarm()-aux)) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && (((\old(pumpRunning) == 0 || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 160]: Loop Invariant Derived loop invariant: (!(\old(methAndRunningLastTime) == 0) || 0 == systemActive) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 315]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 627]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && splverifierCounter == 0) && !(0 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 184]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || 0 == systemActive) || tmp == methaneLevelCritical) && ((!(\old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && pumpRunning == 0)) || !(0 == systemActive))) && (((((!(\old(methAndRunningLastTime) == 0) || (((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && !(pumpRunning == 0)) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) || (pumpRunning == 0 && tmp == methaneLevelCritical)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive)) && (((((!(\old(methAndRunningLastTime) == 0) || (((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && !(pumpRunning == 0)) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) || (methaneLevelCritical == 0 && pumpRunning == 1)) || (pumpRunning == \old(pumpRunning) && pumpRunning == 0)) || 0 == systemActive) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0 && tmp == 0)) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 423]: Loop Invariant Derived loop invariant: (((pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: (((tmp == systemActive && pumpRunning == 0) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == 1 - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(methaneLevelCritical == 0)) || tmp == 0) && ((!(\old(pumpRunning) == 0) || ((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0)) || !(0 == systemActive))) && (((!(\old(methAndRunningLastTime) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) || tmp == methaneLevelCritical)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0 && pumpRunning == 1)) || ((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0))) && (((((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) || !(\old(methAndRunningLastTime) == 0)) || \old(pumpRunning) == 0) || 0 == systemActive) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methaneLevelCritical == 0) || ((pumpRunning == 0 && pumpRunning == tmp___0) && tmp == methaneLevelCritical)) || 0 == systemActive) - InvariantResult [Line: 324]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-11-23 03:53:06,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_540492ce-27f6-4d27-abd0-85fcffd981cd/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