./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9 --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 4d13ffd2557e7d7902d8a5eac414f9fb7393252d85c14855e86000741be6847f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:47:21,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:47:21,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:47:21,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:47:21,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:47:21,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:47:21,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:47:21,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:47:21,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:47:21,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:47:21,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:47:21,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:47:21,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:47:21,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:47:21,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:47:21,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:47:21,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:47:21,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:47:21,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:47:21,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:47:22,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:47:22,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:47:22,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:47:22,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:47:22,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:47:22,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:47:22,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:47:22,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:47:22,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:47:22,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:47:22,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:47:22,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:47:22,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:47:22,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:47:22,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:47:22,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:47:22,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:47:22,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:47:22,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:47:22,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:47:22,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:47:22,035 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:47:22,074 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:47:22,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:47:22,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:47:22,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:47:22,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:47:22,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:47:22,076 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:47:22,076 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:47:22,077 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:47:22,077 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:47:22,078 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:47:22,078 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:47:22,078 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:47:22,079 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:47:22,079 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:47:22,079 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:47:22,079 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:47:22,079 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:47:22,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:47:22,080 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:47:22,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:47:22,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:47:22,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:47:22,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:47:22,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:47:22,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:47:22,082 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:47:22,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:47:22,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:47:22,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:47:22,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:47:22,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:47:22,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:47:22,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:47:22,084 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:47:22,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:47:22,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:47:22,085 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:47:22,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:47:22,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:47:22,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:47:22,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d13ffd2557e7d7902d8a5eac414f9fb7393252d85c14855e86000741be6847f [2022-11-20 20:47:22,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:47:22,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:47:22,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:47:22,395 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:47:22,396 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:47:22,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c [2022-11-20 20:47:25,526 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:47:25,876 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:47:25,877 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c [2022-11-20 20:47:25,897 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/data/107fcfb7d/fb3a5695f53541c9b14e3c7479ce0147/FLAGe392d4507 [2022-11-20 20:47:25,911 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/data/107fcfb7d/fb3a5695f53541c9b14e3c7479ce0147 [2022-11-20 20:47:25,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:47:25,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:47:25,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:47:25,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:47:25,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:47:25,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:47:25" (1/1) ... [2022-11-20 20:47:25,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0cc534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:25, skipping insertion in model container [2022-11-20 20:47:25,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:47:25" (1/1) ... [2022-11-20 20:47:25,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:47:25,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:47:26,159 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c[1605,1618] [2022-11-20 20:47:26,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:47:26,342 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:47:26,360 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c[1605,1618] [2022-11-20 20:47:26,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:47:26,469 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:47:26,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26 WrapperNode [2022-11-20 20:47:26,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:47:26,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:47:26,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:47:26,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:47:26,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26" (1/1) ... [2022-11-20 20:47:26,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26" (1/1) ... [2022-11-20 20:47:26,543 INFO L138 Inliner]: procedures = 58, calls = 106, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 227 [2022-11-20 20:47:26,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:47:26,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:47:26,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:47:26,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:47:26,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26" (1/1) ... [2022-11-20 20:47:26,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26" (1/1) ... [2022-11-20 20:47:26,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26" (1/1) ... [2022-11-20 20:47:26,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26" (1/1) ... [2022-11-20 20:47:26,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26" (1/1) ... [2022-11-20 20:47:26,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26" (1/1) ... [2022-11-20 20:47:26,571 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26" (1/1) ... [2022-11-20 20:47:26,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26" (1/1) ... [2022-11-20 20:47:26,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:47:26,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:47:26,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:47:26,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:47:26,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26" (1/1) ... [2022-11-20 20:47:26,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:47:26,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:47:26,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:47:26,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:47:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:47:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-20 20:47:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-20 20:47:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 20:47:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 20:47:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 20:47:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 20:47:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-20 20:47:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-20 20:47:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 20:47:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 20:47:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-20 20:47:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-20 20:47:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-20 20:47:26,662 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-20 20:47:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-20 20:47:26,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-20 20:47:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-20 20:47:26,663 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-20 20:47:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:47:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-20 20:47:26,663 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-20 20:47:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:47:26,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:47:26,821 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:47:26,823 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:47:27,271 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:47:27,446 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:47:27,447 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 20:47:27,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:47:27 BoogieIcfgContainer [2022-11-20 20:47:27,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:47:27,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:47:27,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:47:27,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:47:27,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:47:25" (1/3) ... [2022-11-20 20:47:27,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66aa88d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:47:27, skipping insertion in model container [2022-11-20 20:47:27,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:47:26" (2/3) ... [2022-11-20 20:47:27,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66aa88d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:47:27, skipping insertion in model container [2022-11-20 20:47:27,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:47:27" (3/3) ... [2022-11-20 20:47:27,469 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product62.cil.c [2022-11-20 20:47:27,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:47:27,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:47:27,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:47:27,544 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@64136ccd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:47:27,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:47:27,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-20 20:47:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 20:47:27,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:27,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:27,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:27,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1270636600, now seen corresponding path program 1 times [2022-11-20 20:47:27,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:27,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437995128] [2022-11-20 20:47:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:27,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:47:27,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:27,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437995128] [2022-11-20 20:47:27,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437995128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:27,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:27,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:47:27,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595748204] [2022-11-20 20:47:27,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:27,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:47:27,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:27,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:47:27,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:47:27,910 INFO L87 Difference]: Start difference. First operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) 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) [2022-11-20 20:47:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:27,986 INFO L93 Difference]: Finished difference Result 148 states and 199 transitions. [2022-11-20 20:47:27,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:47:27,989 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 [2022-11-20 20:47:27,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:27,998 INFO L225 Difference]: With dead ends: 148 [2022-11-20 20:47:27,998 INFO L226 Difference]: Without dead ends: 70 [2022-11-20 20:47:28,002 INFO L412 NwaCegarLoop]: 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 [2022-11-20 20:47:28,009 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:28,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:47:28,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-20 20:47:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-20 20:47:28,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 51 states have internal predecessors, (55), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-20 20:47:28,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2022-11-20 20:47:28,087 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 17 [2022-11-20 20:47:28,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:28,089 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2022-11-20 20:47:28,089 INFO L496 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) [2022-11-20 20:47:28,089 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2022-11-20 20:47:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 20:47:28,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:28,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:28,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:47:28,094 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:28,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash -867172057, now seen corresponding path program 1 times [2022-11-20 20:47:28,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:28,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405769548] [2022-11-20 20:47:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:28,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:47:28,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:28,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405769548] [2022-11-20 20:47:28,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405769548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:28,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:28,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:47:28,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253895142] [2022-11-20 20:47:28,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:28,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:47:28,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:28,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:47:28,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:47:28,240 INFO L87 Difference]: Start difference. First operand 70 states and 90 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) [2022-11-20 20:47:28,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:28,293 INFO L93 Difference]: Finished difference Result 117 states and 151 transitions. [2022-11-20 20:47:28,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:47:28,294 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 [2022-11-20 20:47:28,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:28,295 INFO L225 Difference]: With dead ends: 117 [2022-11-20 20:47:28,296 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 20:47:28,296 INFO L412 NwaCegarLoop]: 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 [2022-11-20 20:47:28,298 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 7 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:28,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 117 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:47:28,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 20:47:28,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-20 20:47:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 46 states have internal predecessors, (49), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 20:47:28,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2022-11-20 20:47:28,309 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 18 [2022-11-20 20:47:28,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:28,310 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2022-11-20 20:47:28,310 INFO L496 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) [2022-11-20 20:47:28,310 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2022-11-20 20:47:28,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 20:47:28,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:28,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:28,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:47:28,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:28,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:28,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1813213069, now seen corresponding path program 1 times [2022-11-20 20:47:28,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:28,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733602726] [2022-11-20 20:47:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:28,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:47:28,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:28,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733602726] [2022-11-20 20:47:28,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733602726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:28,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:28,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:47:28,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101170414] [2022-11-20 20:47:28,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:28,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:47:28,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:28,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:47:28,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:47:28,513 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:47:28,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:28,652 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2022-11-20 20:47:28,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:47:28,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-20 20:47:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:28,659 INFO L225 Difference]: With dead ends: 122 [2022-11-20 20:47:28,660 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 20:47:28,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:47:28,667 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 74 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:28,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 83 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:47:28,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 20:47:28,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-20 20:47:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 46 states have internal predecessors, (48), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 20:47:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2022-11-20 20:47:28,691 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 20 [2022-11-20 20:47:28,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:28,691 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2022-11-20 20:47:28,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:47:28,692 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2022-11-20 20:47:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 20:47:28,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:28,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:28,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:47:28,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:28,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:28,699 INFO L85 PathProgramCache]: Analyzing trace with hash 347622461, now seen corresponding path program 1 times [2022-11-20 20:47:28,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:28,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543720907] [2022-11-20 20:47:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:28,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:47:28,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:28,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543720907] [2022-11-20 20:47:28,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543720907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:28,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:28,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:47:28,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848207760] [2022-11-20 20:47:28,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:28,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:47:28,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:28,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:47:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:47:28,869 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 20:47:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:29,194 INFO L93 Difference]: Finished difference Result 195 states and 244 transitions. [2022-11-20 20:47:29,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:47:29,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2022-11-20 20:47:29,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:29,200 INFO L225 Difference]: With dead ends: 195 [2022-11-20 20:47:29,200 INFO L226 Difference]: Without dead ends: 135 [2022-11-20 20:47:29,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:47:29,211 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 134 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:29,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 174 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:47:29,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-20 20:47:29,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2022-11-20 20:47:29,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 91 states have internal predecessors, (103), 22 states have call successors, (22), 18 states have call predecessors, (22), 23 states have return successors, (29), 24 states have call predecessors, (29), 22 states have call successors, (29) [2022-11-20 20:47:29,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2022-11-20 20:47:29,246 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 31 [2022-11-20 20:47:29,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:29,247 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2022-11-20 20:47:29,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 20:47:29,247 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2022-11-20 20:47:29,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:47:29,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:29,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:29,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:47:29,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:29,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:29,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1589821877, now seen corresponding path program 1 times [2022-11-20 20:47:29,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:29,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653738925] [2022-11-20 20:47:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:29,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:47:29,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:29,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653738925] [2022-11-20 20:47:29,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653738925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:29,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:29,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:47:29,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479217603] [2022-11-20 20:47:29,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:29,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:47:29,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:29,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:47:29,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:47:29,412 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 20:47:29,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:29,617 INFO L93 Difference]: Finished difference Result 430 states and 525 transitions. [2022-11-20 20:47:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:47:29,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2022-11-20 20:47:29,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:29,621 INFO L225 Difference]: With dead ends: 430 [2022-11-20 20:47:29,621 INFO L226 Difference]: Without dead ends: 303 [2022-11-20 20:47:29,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:47:29,623 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 114 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:29,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 306 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:47:29,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-20 20:47:29,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 286. [2022-11-20 20:47:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 184 states have (on average 1.1956521739130435) internal successors, (220), 199 states have internal predecessors, (220), 50 states have call successors, (50), 41 states have call predecessors, (50), 51 states have return successors, (67), 53 states have call predecessors, (67), 50 states have call successors, (67) [2022-11-20 20:47:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 337 transitions. [2022-11-20 20:47:29,714 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 337 transitions. Word has length 36 [2022-11-20 20:47:29,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:29,715 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 337 transitions. [2022-11-20 20:47:29,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 20:47:29,715 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 337 transitions. [2022-11-20 20:47:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 20:47:29,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:29,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:47:29,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:47:29,717 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:29,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:29,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1390594626, now seen corresponding path program 1 times [2022-11-20 20:47:29,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:29,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504876366] [2022-11-20 20:47:29,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:29,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:47:30,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:30,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504876366] [2022-11-20 20:47:30,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504876366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:30,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:30,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 20:47:30,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284436597] [2022-11-20 20:47:30,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:30,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:47:30,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:30,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:47:30,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:47:30,210 INFO L87 Difference]: Start difference. First operand 286 states and 337 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 20:47:31,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:31,042 INFO L93 Difference]: Finished difference Result 652 states and 800 transitions. [2022-11-20 20:47:31,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 20:47:31,042 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 39 [2022-11-20 20:47:31,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:31,046 INFO L225 Difference]: With dead ends: 652 [2022-11-20 20:47:31,047 INFO L226 Difference]: Without dead ends: 525 [2022-11-20 20:47:31,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-11-20 20:47:31,048 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 413 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:31,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 302 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:47:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-20 20:47:31,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 492. [2022-11-20 20:47:31,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 321 states have (on average 1.2211838006230529) internal successors, (392), 346 states have internal predecessors, (392), 88 states have call successors, (88), 67 states have call predecessors, (88), 82 states have return successors, (116), 91 states have call predecessors, (116), 88 states have call successors, (116) [2022-11-20 20:47:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 596 transitions. [2022-11-20 20:47:31,128 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 596 transitions. Word has length 39 [2022-11-20 20:47:31,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:31,129 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 596 transitions. [2022-11-20 20:47:31,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 20:47:31,129 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 596 transitions. [2022-11-20 20:47:31,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 20:47:31,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:31,131 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-11-20 20:47:31,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:47:31,132 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:31,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1237992750, now seen corresponding path program 1 times [2022-11-20 20:47:31,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:31,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741040983] [2022-11-20 20:47:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:31,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:47:31,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:31,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741040983] [2022-11-20 20:47:31,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741040983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:47:31,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291527029] [2022-11-20 20:47:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:31,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:47:31,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:47:31,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:47:31,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:47:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:31,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 20:47:31,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:47:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:47:32,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:47:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:47:32,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291527029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:47:32,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1331744222] [2022-11-20 20:47:32,673 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-11-20 20:47:32,674 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:47:32,692 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:47:32,698 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:47:32,698 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:47:33,209 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 114 for LOIs [2022-11-20 20:47:33,225 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 115 for LOIs [2022-11-20 20:47:34,791 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 112 for LOIs [2022-11-20 20:47:34,992 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 112 for LOIs [2022-11-20 20:47:35,297 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 113 for LOIs [2022-11-20 20:47:35,397 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 44 for LOIs [2022-11-20 20:47:35,403 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:47:49,666 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4687#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= |timeShift_getWaterLevel_~retValue_acc~4#1| |timeShift_getWaterLevel_#res#1|) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= |timeShift_getWaterLevel_~retValue_acc~4#1| ~waterLevel~0) (= (select |#valid| 9) 1) (= (select |#length| 12) 25) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= 30 (select |#length| 4)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~10#1|) (= ~methaneLevelCritical~0 |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1|) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= |timeShift_getWaterLevel_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|) (= 0 |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= 30 (select |#length| 13)) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~10#1|) (= (select |#valid| 14) 1) (= |old(~waterLevel~0)| ~waterLevel~0) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= 9 (select |#length| 11)) (= (select (select |#memory_int| 1) 0) 48) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= 2 |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|))' at error location [2022-11-20 20:47:49,666 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:47:49,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:47:49,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 22 [2022-11-20 20:47:49,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541974625] [2022-11-20 20:47:49,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:47:49,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 20:47:49,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:49,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 20:47:49,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2217, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 20:47:49,669 INFO L87 Difference]: Start difference. First operand 492 states and 596 transitions. Second operand has 22 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 5 states have call successors, (14), 3 states have call predecessors, (14), 11 states have return successors, (16), 12 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-20 20:47:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:51,673 INFO L93 Difference]: Finished difference Result 2053 states and 2563 transitions. [2022-11-20 20:47:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 20:47:51,680 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 5 states have call successors, (14), 3 states have call predecessors, (14), 11 states have return successors, (16), 12 states have call predecessors, (16), 5 states have call successors, (16) Word has length 44 [2022-11-20 20:47:51,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:51,691 INFO L225 Difference]: With dead ends: 2053 [2022-11-20 20:47:51,698 INFO L226 Difference]: Without dead ends: 1689 [2022-11-20 20:47:51,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 84 SyntacticMatches, 11 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2390 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=528, Invalid=5792, Unknown=0, NotChecked=0, Total=6320 [2022-11-20 20:47:51,702 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 485 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:51,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 1271 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 20:47:51,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2022-11-20 20:47:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1501. [2022-11-20 20:47:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1000 states have (on average 1.203) internal successors, (1203), 1050 states have internal predecessors, (1203), 262 states have call successors, (262), 206 states have call predecessors, (262), 238 states have return successors, (352), 269 states have call predecessors, (352), 262 states have call successors, (352) [2022-11-20 20:47:51,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 1817 transitions. [2022-11-20 20:47:51,908 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 1817 transitions. Word has length 44 [2022-11-20 20:47:51,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:51,909 INFO L495 AbstractCegarLoop]: Abstraction has 1501 states and 1817 transitions. [2022-11-20 20:47:51,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 5 states have call successors, (14), 3 states have call predecessors, (14), 11 states have return successors, (16), 12 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-20 20:47:51,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 1817 transitions. [2022-11-20 20:47:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 20:47:51,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:51,911 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2022-11-20 20:47:51,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:47:52,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 20:47:52,117 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:52,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:52,117 INFO L85 PathProgramCache]: Analyzing trace with hash -260228681, now seen corresponding path program 1 times [2022-11-20 20:47:52,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:52,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437743880] [2022-11-20 20:47:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:52,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:47:52,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:52,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437743880] [2022-11-20 20:47:52,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437743880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:47:52,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:47:52,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:47:52,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112409] [2022-11-20 20:47:52,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:47:52,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:47:52,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:47:52,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:47:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:47:52,369 INFO L87 Difference]: Start difference. First operand 1501 states and 1817 transitions. Second operand has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:47:53,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:47:53,365 INFO L93 Difference]: Finished difference Result 2688 states and 3393 transitions. [2022-11-20 20:47:53,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 20:47:53,366 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-11-20 20:47:53,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:47:53,375 INFO L225 Difference]: With dead ends: 2688 [2022-11-20 20:47:53,376 INFO L226 Difference]: Without dead ends: 1907 [2022-11-20 20:47:53,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2022-11-20 20:47:53,379 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 184 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:47:53,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 949 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:47:53,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2022-11-20 20:47:53,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1635. [2022-11-20 20:47:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1086 states have (on average 1.1869244935543277) internal successors, (1289), 1149 states have internal predecessors, (1289), 284 states have call successors, (284), 226 states have call predecessors, (284), 264 states have return successors, (405), 285 states have call predecessors, (405), 284 states have call successors, (405) [2022-11-20 20:47:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 1978 transitions. [2022-11-20 20:47:53,568 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 1978 transitions. Word has length 47 [2022-11-20 20:47:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:47:53,568 INFO L495 AbstractCegarLoop]: Abstraction has 1635 states and 1978 transitions. [2022-11-20 20:47:53,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:47:53,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 1978 transitions. [2022-11-20 20:47:53,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 20:47:53,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:47:53,572 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-20 20:47:53,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:47:53,573 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:47:53,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:47:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash -874487163, now seen corresponding path program 1 times [2022-11-20 20:47:53,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:47:53,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450490150] [2022-11-20 20:47:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:53,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:47:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:47:54,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:47:54,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450490150] [2022-11-20 20:47:54,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450490150] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:47:54,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749710745] [2022-11-20 20:47:54,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:47:54,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:47:54,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:47:54,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:47:54,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:47:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:47:54,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 20:47:54,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:47:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:47:54,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:47:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 20:47:54,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749710745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:47:54,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1051819878] [2022-11-20 20:47:54,793 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2022-11-20 20:47:54,795 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:47:54,796 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:47:54,796 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:47:54,796 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:47:57,283 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 114 for LOIs [2022-11-20 20:47:57,292 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 123 for LOIs [2022-11-20 20:47:58,133 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 123 for LOIs [2022-11-20 20:47:58,641 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 123 for LOIs [2022-11-20 20:47:59,551 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 123 for LOIs [2022-11-20 20:47:59,663 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 45 for LOIs [2022-11-20 20:47:59,668 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:48:12,976 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17358#(and (= |timeShift_getWaterLevel_~retValue_acc~4#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~4#1| ~waterLevel~0) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~10#1|) (= |timeShift_getWaterLevel_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|) (= 0 |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (<= 2 |old(~waterLevel~0)|) (<= ~methaneLevelCritical~0 0) (<= 0 ~head~0.base) (= |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~10#1|) (<= 0 ~methaneLevelCritical~0) (<= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= 2 |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|))' at error location [2022-11-20 20:48:12,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:48:12,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:48:12,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 20 [2022-11-20 20:48:12,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908952158] [2022-11-20 20:48:12,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:48:12,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 20:48:12,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:48:12,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 20:48:12,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1974, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 20:48:12,980 INFO L87 Difference]: Start difference. First operand 1635 states and 1978 transitions. Second operand has 20 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-11-20 20:48:16,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:16,279 INFO L93 Difference]: Finished difference Result 4520 states and 5780 transitions. [2022-11-20 20:48:16,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-20 20:48:16,280 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) Word has length 75 [2022-11-20 20:48:16,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:16,305 INFO L225 Difference]: With dead ends: 4520 [2022-11-20 20:48:16,305 INFO L226 Difference]: Without dead ends: 3682 [2022-11-20 20:48:16,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 192 SyntacticMatches, 13 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3127 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=933, Invalid=6377, Unknown=0, NotChecked=0, Total=7310 [2022-11-20 20:48:16,316 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1038 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:16,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 505 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 20:48:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3682 states. [2022-11-20 20:48:16,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3682 to 3319. [2022-11-20 20:48:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 2188 states have (on average 1.1645338208409506) internal successors, (2548), 2305 states have internal predecessors, (2548), 573 states have call successors, (573), 473 states have call predecessors, (573), 557 states have return successors, (862), 580 states have call predecessors, (862), 573 states have call successors, (862) [2022-11-20 20:48:16,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 3983 transitions. [2022-11-20 20:48:16,755 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 3983 transitions. Word has length 75 [2022-11-20 20:48:16,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:48:16,756 INFO L495 AbstractCegarLoop]: Abstraction has 3319 states and 3983 transitions. [2022-11-20 20:48:16,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-11-20 20:48:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 3983 transitions. [2022-11-20 20:48:16,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 20:48:16,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:16,761 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:48:16,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 20:48:16,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 20:48:16,966 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:16,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:16,967 INFO L85 PathProgramCache]: Analyzing trace with hash -376826429, now seen corresponding path program 1 times [2022-11-20 20:48:16,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:48:16,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012329870] [2022-11-20 20:48:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:16,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:48:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 20:48:17,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:48:17,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012329870] [2022-11-20 20:48:17,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012329870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:48:17,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743910595] [2022-11-20 20:48:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:17,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:48:17,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:48:17,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:48:17,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:48:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:17,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 20:48:17,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:48:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 20:48:17,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:48:17,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743910595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:17,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:48:17,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-20 20:48:17,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234086498] [2022-11-20 20:48:17,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:17,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:48:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:48:17,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:48:17,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:48:17,657 INFO L87 Difference]: Start difference. First operand 3319 states and 3983 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 20:48:18,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:18,085 INFO L93 Difference]: Finished difference Result 4989 states and 6044 transitions. [2022-11-20 20:48:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:48:18,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2022-11-20 20:48:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:18,087 INFO L225 Difference]: With dead ends: 4989 [2022-11-20 20:48:18,087 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:48:18,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:48:18,098 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 50 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:18,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 283 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:48:18,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:48:18,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:48:18,100 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) [2022-11-20 20:48:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:48:18,100 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2022-11-20 20:48:18,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:48:18,101 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:48:18,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 20:48:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:48:18,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:48:18,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:48:18,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:48:18,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:48:18,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:48:35,901 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 751 758) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~pumpRunning~0)| 0) (not (<= ~waterLevel~0 1)) (= 0 ~systemActive~0)) [2022-11-20 20:48:35,901 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 751 758) no Hoare annotation was computed. [2022-11-20 20:48:35,901 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 641 647) no Hoare annotation was computed. [2022-11-20 20:48:35,901 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 641 647) the Hoare annotation is: true [2022-11-20 20:48:35,901 INFO L895 garLoopResultBuilder]: At program point L694(line 694) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (<= ~waterLevel~0 1)) .cse1) (or (not .cse0) (= ~pumpRunning~0 0) (not (<= ~waterLevel~0 2)) .cse1))) [2022-11-20 20:48:35,901 INFO L899 garLoopResultBuilder]: For program point L694-1(lines 675 699) no Hoare annotation was computed. [2022-11-20 20:48:35,902 INFO L895 garLoopResultBuilder]: At program point L689(line 689) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-20 20:48:35,902 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 675 699) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-20 20:48:35,902 INFO L895 garLoopResultBuilder]: At program point L685(line 685) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-20 20:48:35,902 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 675 699) no Hoare annotation was computed. [2022-11-20 20:48:35,903 INFO L899 garLoopResultBuilder]: For program point L683(lines 683 691) no Hoare annotation was computed. [2022-11-20 20:48:35,903 INFO L895 garLoopResultBuilder]: At program point L679(lines 679 696) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-20 20:48:35,903 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 494 505) the Hoare annotation is: (let ((.cse5 (= ~pumpRunning~0 1)) (.cse0 (not (<= ~waterLevel~0 2))) (.cse1 (not (<= |old(~methaneLevelCritical~0)| 0))) (.cse2 (and (<= ~methaneLevelCritical~0 0) (<= 0 ~methaneLevelCritical~0))) (.cse3 (not (<= 0 |old(~methaneLevelCritical~0)|))) (.cse4 (= 0 ~systemActive~0))) (and (or (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2 .cse3 .cse4) (or (<= 1 ~methaneLevelCritical~0) (and (not (<= (+ |old(~methaneLevelCritical~0)| 1) 0)) (not (<= 1 |old(~methaneLevelCritical~0)|))) (<= (+ ~methaneLevelCritical~0 1) 0) .cse0 .cse4 .cse5) (or (not .cse5) .cse0 .cse1 .cse2 (< ~waterLevel~0 2) .cse3 .cse4))) [2022-11-20 20:48:35,903 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 494 505) no Hoare annotation was computed. [2022-11-20 20:48:35,904 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 931 960) no Hoare annotation was computed. [2022-11-20 20:48:35,904 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 931 960) the Hoare annotation is: true [2022-11-20 20:48:35,904 INFO L902 garLoopResultBuilder]: At program point L956(lines 931 960) the Hoare annotation is: true [2022-11-20 20:48:35,904 INFO L899 garLoopResultBuilder]: For program point L952(line 952) no Hoare annotation was computed. [2022-11-20 20:48:35,904 INFO L899 garLoopResultBuilder]: For program point L945(lines 945 949) no Hoare annotation was computed. [2022-11-20 20:48:35,904 INFO L902 garLoopResultBuilder]: At program point L945-1(lines 945 949) the Hoare annotation is: true [2022-11-20 20:48:35,905 INFO L902 garLoopResultBuilder]: At program point L941-2(lines 941 955) the Hoare annotation is: true [2022-11-20 20:48:35,905 INFO L902 garLoopResultBuilder]: At program point L937(line 937) the Hoare annotation is: true [2022-11-20 20:48:35,905 INFO L899 garLoopResultBuilder]: For program point L937-1(line 937) no Hoare annotation was computed. [2022-11-20 20:48:35,905 INFO L899 garLoopResultBuilder]: For program point L81(lines 81 87) no Hoare annotation was computed. [2022-11-20 20:48:35,906 INFO L895 garLoopResultBuilder]: At program point L77(lines 77 90) the Hoare annotation is: (let ((.cse8 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (not .cse8)) (.cse6 (not (< |old(~waterLevel~0)| 2))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse3 (<= ~waterLevel~0 1)) (.cse7 (<= |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1| 1)) (.cse4 (= 0 ~systemActive~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2)))) (and (or (and (not .cse0) .cse1 (or (<= 1 ~methaneLevelCritical~0) (<= (+ ~methaneLevelCritical~0 1) 0) (= ~pumpRunning~0 1))) .cse2 (and .cse3 .cse1) .cse4 .cse5) (or .cse2 .cse6 (and .cse0 .cse7) .cse4) (or .cse8 .cse4 (= ~waterLevel~0 1) .cse5 (not (<= 2 |old(~waterLevel~0)|))) (or .cse2 (= ~methaneLevelCritical~0 0) .cse6 .cse4) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse7 (let ((.cse9 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse9) .cse1) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse9)))) (and .cse0 .cse3 .cse7) .cse8 .cse4 .cse5)))) [2022-11-20 20:48:35,906 INFO L895 garLoopResultBuilder]: At program point L77-1(lines 62 94) the Hoare annotation is: (let ((.cse5 (= |old(~pumpRunning~0)| 0)) (.cse8 (< |old(~waterLevel~0)| 2))) (let ((.cse1 (not .cse8)) (.cse4 (= ~pumpRunning~0 0)) (.cse0 (not .cse5)) (.cse3 (= 0 ~systemActive~0)) (.cse6 (not (<= |old(~waterLevel~0)| 2))) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse4 .cse1 .cse3) (or .cse5 .cse3 .cse6 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse7 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse7) .cse2) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse7)))) (and .cse4 (<= ~waterLevel~0 1))) (or .cse8 .cse5 .cse3 (= ~waterLevel~0 1) .cse6) (or .cse0 (= ~methaneLevelCritical~0 0) (and .cse2 (or (not .cse4) (not (= |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1| 0)))) .cse3 .cse6) (or .cse0 (not (<= ~methaneLevelCritical~0 0)) (not (<= 0 ~methaneLevelCritical~0)) .cse3 .cse6 (and .cse2 (= ~pumpRunning~0 1)) (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-20 20:48:35,906 INFO L899 garLoopResultBuilder]: For program point L709(lines 709 717) no Hoare annotation was computed. [2022-11-20 20:48:35,907 INFO L895 garLoopResultBuilder]: At program point L69(line 69) the Hoare annotation is: (let ((.cse4 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (= ~pumpRunning~0 0)) (.cse7 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (< |old(~waterLevel~0)| 2)) (.cse0 (not .cse4)) (.cse3 (= 0 ~systemActive~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2)))) (and (or .cse0 .cse1 (not .cse2) .cse3) (or .cse4 .cse3 .cse5 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse6 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse6) .cse7) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse6)))) (and .cse1 (<= ~waterLevel~0 1))) (or .cse0 .cse7 .cse3 .cse5) (or .cse2 .cse4 .cse3 (= ~waterLevel~0 1) .cse5) (or .cse0 (not (<= ~methaneLevelCritical~0 0)) (not (<= 0 ~methaneLevelCritical~0)) .cse3 .cse5 (= ~pumpRunning~0 1) (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-20 20:48:35,907 INFO L899 garLoopResultBuilder]: For program point L69-1(line 69) no Hoare annotation was computed. [2022-11-20 20:48:35,907 INFO L899 garLoopResultBuilder]: For program point L705(lines 705 722) no Hoare annotation was computed. [2022-11-20 20:48:35,907 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (or (= 0 ~systemActive~0) (not (<= |old(~waterLevel~0)| 2))) [2022-11-20 20:48:35,907 INFO L899 garLoopResultBuilder]: For program point L628-1(lines 628 634) no Hoare annotation was computed. [2022-11-20 20:48:35,908 INFO L895 garLoopResultBuilder]: At program point L715(line 715) the Hoare annotation is: (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~pumpRunning~0 0)) (let ((.cse0 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse0) (= |old(~waterLevel~0)| ~waterLevel~0)) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse0)))) (= 0 ~systemActive~0) (not (<= |old(~waterLevel~0)| 2))) [2022-11-20 20:48:35,908 INFO L895 garLoopResultBuilder]: At program point L711(line 711) the Hoare annotation is: (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~pumpRunning~0 0)) (let ((.cse0 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse0) (= |old(~waterLevel~0)| ~waterLevel~0)) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse0)))) (= 0 ~systemActive~0) (not (<= |old(~waterLevel~0)| 2))) [2022-11-20 20:48:35,908 INFO L895 garLoopResultBuilder]: At program point L71(lines 71 91) the Hoare annotation is: (let ((.cse7 (= |old(~pumpRunning~0)| 0))) (let ((.cse8 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse10 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (not .cse7)) (.cse1 (= ~pumpRunning~0 0)) (.cse11 (<= ~waterLevel~0 1)) (.cse2 (= 0 ~systemActive~0))) (let ((.cse0 (and .cse5 .cse1 .cse11 (not .cse2))) (.cse6 (< |old(~waterLevel~0)| 2)) (.cse4 (and .cse8 .cse1 .cse11 .cse10)) (.cse3 (not (<= |old(~waterLevel~0)| 2)))) (and (or .cse0 (not .cse1) (= ~methaneLevelCritical~0 0) .cse2 .cse3 (not (= |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1| 0))) (or .cse4 .cse5 (not .cse6) .cse2) (or .cse0 .cse7 .cse2 .cse3 (and .cse8 (let ((.cse9 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse9) .cse10) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse9))))) (or .cse6 .cse7 .cse2 (= ~waterLevel~0 1) .cse3) (or .cse4 .cse5 (and .cse10 (or (<= 1 ~methaneLevelCritical~0) (<= (+ ~methaneLevelCritical~0 1) 0) (= ~pumpRunning~0 1))) .cse2 .cse3))))) [2022-11-20 20:48:35,909 INFO L895 garLoopResultBuilder]: At program point L707(line 707) the Hoare annotation is: (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~pumpRunning~0 0)) (let ((.cse0 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse0) (= |old(~waterLevel~0)| ~waterLevel~0)) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse0)))) (= 0 ~systemActive~0) (not (<= |old(~waterLevel~0)| 2))) [2022-11-20 20:48:35,909 INFO L899 garLoopResultBuilder]: For program point L707-1(line 707) no Hoare annotation was computed. [2022-11-20 20:48:35,909 INFO L895 garLoopResultBuilder]: At program point L720(line 720) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (<= |old(~waterLevel~0)| 2)))) (and (or (= |old(~pumpRunning~0)| 0) .cse0 .cse1) (or (and (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse0 .cse1))) [2022-11-20 20:48:35,909 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 617 640) the Hoare annotation is: (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0)) (= 0 ~systemActive~0) (not (<= |old(~waterLevel~0)| 2))) [2022-11-20 20:48:35,910 INFO L895 garLoopResultBuilder]: At program point L720-1(lines 701 725) the Hoare annotation is: (let ((.cse4 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (= ~pumpRunning~0 0)) (.cse7 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (< |old(~waterLevel~0)| 2)) (.cse0 (not .cse4)) (.cse3 (= 0 ~systemActive~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2)))) (and (or .cse0 .cse1 (not .cse2) .cse3) (or .cse4 .cse3 .cse5 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse6 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse6) .cse7) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse6)))) (and .cse1 (<= ~waterLevel~0 1))) (or .cse0 .cse7 .cse3 .cse5) (or .cse2 .cse4 .cse3 (= ~waterLevel~0 1) .cse5) (or .cse0 (not (<= ~methaneLevelCritical~0 0)) (not (<= 0 ~methaneLevelCritical~0)) .cse3 .cse5 (= ~pumpRunning~0 1) (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-20 20:48:35,910 INFO L899 garLoopResultBuilder]: For program point L621-1(lines 620 639) no Hoare annotation was computed. [2022-11-20 20:48:35,910 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 617 640) no Hoare annotation was computed. [2022-11-20 20:48:35,910 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-20 20:48:35,910 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 506 514) the Hoare annotation is: true [2022-11-20 20:48:35,911 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 506 514) no Hoare annotation was computed. [2022-11-20 20:48:35,911 INFO L895 garLoopResultBuilder]: At program point L911-2(lines 903 916) the Hoare annotation is: (and (= |ULTIMATE.start_main_~tmp~11#1| 1) (= |ULTIMATE.start_main_~tmp~11#1| ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= ~waterLevel~0 2)) [2022-11-20 20:48:35,911 INFO L899 garLoopResultBuilder]: For program point L874(lines 873 920) no Hoare annotation was computed. [2022-11-20 20:48:35,911 INFO L895 garLoopResultBuilder]: At program point L895(line 895) the Hoare annotation is: (and (= |ULTIMATE.start_main_~tmp~11#1| 1) (= |ULTIMATE.start_main_~tmp~11#1| ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= ~waterLevel~0 2)) [2022-11-20 20:48:35,911 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-20 20:48:35,912 INFO L902 garLoopResultBuilder]: At program point L924(lines 863 928) the Hoare annotation is: true [2022-11-20 20:48:35,912 INFO L899 garLoopResultBuilder]: For program point L883(lines 883 889) no Hoare annotation was computed. [2022-11-20 20:48:35,912 INFO L899 garLoopResultBuilder]: For program point L883-1(lines 883 889) no Hoare annotation was computed. [2022-11-20 20:48:35,912 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:48:35,912 INFO L895 garLoopResultBuilder]: At program point L921(lines 872 922) the Hoare annotation is: false [2022-11-20 20:48:35,912 INFO L895 garLoopResultBuilder]: At program point L1012(lines 1012 1019) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= |ULTIMATE.start_main_~tmp~11#1| 1) (= |ULTIMATE.start_main_~tmp~11#1| ~systemActive~0) (<= ~methaneLevelCritical~0 0) (<= 0 ~methaneLevelCritical~0) (= ~waterLevel~0 1)) [2022-11-20 20:48:35,913 INFO L902 garLoopResultBuilder]: At program point L1012-2(lines 1012 1019) the Hoare annotation is: true [2022-11-20 20:48:35,913 INFO L899 garLoopResultBuilder]: For program point L893(lines 893 899) no Hoare annotation was computed. [2022-11-20 20:48:35,913 INFO L895 garLoopResultBuilder]: At program point L893-1(lines 893 899) the Hoare annotation is: (and (= |ULTIMATE.start_main_~tmp~11#1| 1) (= |ULTIMATE.start_main_~tmp~11#1| ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= ~waterLevel~0 2)) [2022-11-20 20:48:35,913 INFO L895 garLoopResultBuilder]: At program point L918(lines 873 920) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~11#1| 1)) (.cse1 (= |ULTIMATE.start_main_~tmp~11#1| ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (<= ~waterLevel~0 1) .cse1 .cse2) (and .cse0 .cse1 .cse2 (<= ~waterLevel~0 2) (or (<= 1 ~methaneLevelCritical~0) (<= (+ ~methaneLevelCritical~0 1) 0) (= ~pumpRunning~0 1))))) [2022-11-20 20:48:35,913 INFO L895 garLoopResultBuilder]: At program point L885(line 885) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~11#1| 1)) (.cse1 (= |ULTIMATE.start_main_~tmp~11#1| ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (<= ~waterLevel~0 2))) (or (and .cse0 (<= ~waterLevel~0 1) .cse1 .cse2) (and .cse0 .cse1 .cse2 .cse3 (or (<= 1 ~methaneLevelCritical~0) (<= (+ ~methaneLevelCritical~0 1) 0) (= ~pumpRunning~0 1))) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 .cse3))) [2022-11-20 20:48:35,914 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 649 673) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-20 20:48:35,914 INFO L895 garLoopResultBuilder]: At program point L663(line 663) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse0) (or (not (<= ~waterLevel~0 1)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 0)) .cse0))) [2022-11-20 20:48:35,914 INFO L899 garLoopResultBuilder]: For program point L657(lines 657 665) no Hoare annotation was computed. [2022-11-20 20:48:35,914 INFO L895 garLoopResultBuilder]: At program point L653(lines 653 670) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-20 20:48:35,915 INFO L895 garLoopResultBuilder]: At program point L668(line 668) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-20 20:48:35,915 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 649 673) no Hoare annotation was computed. [2022-11-20 20:48:35,915 INFO L899 garLoopResultBuilder]: For program point L668-1(lines 649 673) no Hoare annotation was computed. [2022-11-20 20:48:35,915 INFO L895 garLoopResultBuilder]: At program point L739(line 739) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= ~waterLevel~0 2)) .cse0 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 1))) (or (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-20 20:48:35,915 INFO L895 garLoopResultBuilder]: At program point L739-1(line 739) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (and (= ~methaneLevelCritical~0 |processEnvironment__wrappee__highWaterSensor_activatePump_#t~ret39#1|) (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 1)) (not (= |old(~pumpRunning~0)| 0)) (not (<= ~waterLevel~0 2)) .cse0) (or (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-20 20:48:35,916 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 482 493) no Hoare annotation was computed. [2022-11-20 20:48:35,916 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 482 493) the Hoare annotation is: (let ((.cse2 (not (<= |old(~waterLevel~0)| 2))) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0))) (and (or (and (not (<= (+ ~methaneLevelCritical~0 1) 0)) (not (<= 1 ~methaneLevelCritical~0)) (not (= ~pumpRunning~0 1))) .cse0 .cse1 .cse2) (or (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2) (or (not (<= |old(~waterLevel~0)| 1)) .cse0 .cse1))) [2022-11-20 20:48:35,916 INFO L902 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 759 769) the Hoare annotation is: true [2022-11-20 20:48:35,916 INFO L902 garLoopResultBuilder]: At program point L764(line 764) the Hoare annotation is: true [2022-11-20 20:48:35,916 INFO L899 garLoopResultBuilder]: For program point L764-1(line 764) no Hoare annotation was computed. [2022-11-20 20:48:35,916 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 759 769) no Hoare annotation was computed. [2022-11-20 20:48:35,920 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:48:35,922 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:48:35,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:48:35 BoogieIcfgContainer [2022-11-20 20:48:35,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:48:35,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:48:35,950 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:48:35,950 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:48:35,951 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:47:27" (3/4) ... [2022-11-20 20:48:35,954 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:48:35,960 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-20 20:48:35,960 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-20 20:48:35,960 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-20 20:48:35,960 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-20 20:48:35,960 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-20 20:48:35,961 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-20 20:48:35,961 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 20:48:35,961 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-20 20:48:35,961 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-11-20 20:48:35,961 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-11-20 20:48:35,968 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 54 nodes and edges [2022-11-20 20:48:35,969 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-20 20:48:35,969 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 20:48:35,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:48:35,971 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:48:35,996 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) || 0 == systemActive) || !(\old(waterLevel) <= 2) [2022-11-20 20:48:35,997 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) < 2)) || 0 == systemActive) && ((((\old(pumpRunning) == 0 || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (pumpRunning == \old(pumpRunning) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || (pumpRunning == 0 && waterLevel <= 1))) && (((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((\old(waterLevel) < 2 || \old(pumpRunning) == 0) || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2))) && ((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || pumpRunning == 1) || !(2 <= \old(waterLevel))) [2022-11-20 20:48:35,998 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || 0 == systemActive) && ((pumpRunning == \old(pumpRunning) || !(waterLevel <= 1)) || 0 == systemActive) [2022-11-20 20:48:35,998 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || 0 == systemActive) && ((pumpRunning == \old(pumpRunning) || !(waterLevel <= 1)) || 0 == systemActive) [2022-11-20 20:48:35,999 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && !(0 == systemActive)) || !(pumpRunning == 0)) || methaneLevelCritical == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(tmp == 0)) && ((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && \old(waterLevel) == waterLevel) || !(\old(pumpRunning) == 0)) || !(\old(waterLevel) < 2)) || 0 == systemActive)) && (((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && !(0 == systemActive)) || \old(pumpRunning) == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (pumpRunning == \old(pumpRunning) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))))) && ((((\old(waterLevel) < 2 || \old(pumpRunning) == 0) || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2))) && (((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && \old(waterLevel) == waterLevel) || !(\old(pumpRunning) == 0)) || (\old(waterLevel) == waterLevel && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1))) || 0 == systemActive) || !(\old(waterLevel) <= 2)) [2022-11-20 20:48:35,999 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) < 2)) || \old(waterLevel) == waterLevel) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) < 2)) || 0 == systemActive)) && ((((\old(pumpRunning) == 0 || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (pumpRunning == \old(pumpRunning) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || (pumpRunning == 0 && waterLevel <= 1))) && ((((\old(waterLevel) < 2 || \old(pumpRunning) == 0) || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2))) && ((((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) || (\old(waterLevel) == waterLevel && (!(pumpRunning == 0) || !(tmp == 0)))) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) [2022-11-20 20:48:35,999 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((methaneLevelCritical == aux-isMethaneAlarm()-aux && pumpRunning == 0) && tmp == 1) || !(\old(pumpRunning) == 0)) || !(waterLevel <= 2)) || 0 == systemActive) && (!(waterLevel <= 1) || 0 == systemActive) [2022-11-20 20:48:36,000 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!(pumpRunning == 0) && \old(waterLevel) == waterLevel) && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)) || !(\old(pumpRunning) == 0)) || (waterLevel <= 1 && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) < 2)) || (pumpRunning == 0 && tmp___0 <= 1)) || 0 == systemActive)) && ((((\old(pumpRunning) == 0 || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) || !(\old(waterLevel) < 2)) || 0 == systemActive)) && ((((((pumpRunning == \old(pumpRunning) && tmp___0 <= 1) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) || ((pumpRunning == 0 && waterLevel <= 1) && tmp___0 <= 1)) || \old(pumpRunning) == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) [2022-11-20 20:48:36,001 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 0 == systemActive || !(\old(waterLevel) <= 2) [2022-11-20 20:48:36,025 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:48:36,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:48:36,026 INFO L158 Benchmark]: Toolchain (without parser) took 70110.61ms. Allocated memory was 159.4MB in the beginning and 755.0MB in the end (delta: 595.6MB). Free memory was 128.2MB in the beginning and 687.7MB in the end (delta: -559.4MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2022-11-20 20:48:36,026 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory was 76.1MB in the beginning and 75.9MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:48:36,026 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.03ms. Allocated memory is still 159.4MB. Free memory was 127.9MB in the beginning and 109.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 20:48:36,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.76ms. Allocated memory is still 159.4MB. Free memory was 109.0MB in the beginning and 106.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:48:36,027 INFO L158 Benchmark]: Boogie Preprocessor took 30.82ms. Allocated memory is still 159.4MB. Free memory was 106.6MB in the beginning and 104.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:48:36,027 INFO L158 Benchmark]: RCFGBuilder took 878.63ms. Allocated memory is still 159.4MB. Free memory was 104.9MB in the beginning and 76.9MB in the end (delta: 28.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-20 20:48:36,028 INFO L158 Benchmark]: TraceAbstraction took 68493.09ms. Allocated memory was 159.4MB in the beginning and 755.0MB in the end (delta: 595.6MB). Free memory was 76.2MB in the beginning and 694.0MB in the end (delta: -617.8MB). Peak memory consumption was 415.6MB. Max. memory is 16.1GB. [2022-11-20 20:48:36,028 INFO L158 Benchmark]: Witness Printer took 75.15ms. Allocated memory is still 755.0MB. Free memory was 694.0MB in the beginning and 687.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 20:48:36,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory was 76.1MB in the beginning and 75.9MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.03ms. Allocated memory is still 159.4MB. Free memory was 127.9MB in the beginning and 109.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.76ms. Allocated memory is still 159.4MB. Free memory was 109.0MB in the beginning and 106.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.82ms. Allocated memory is still 159.4MB. Free memory was 106.6MB in the beginning and 104.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 878.63ms. Allocated memory is still 159.4MB. Free memory was 104.9MB in the beginning and 76.9MB in the end (delta: 28.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 68493.09ms. Allocated memory was 159.4MB in the beginning and 755.0MB in the end (delta: 595.6MB). Free memory was 76.2MB in the beginning and 694.0MB in the end (delta: -617.8MB). Peak memory consumption was 415.6MB. Max. memory is 16.1GB. * Witness Printer took 75.15ms. Allocated memory is still 755.0MB. Free memory was 694.0MB in the beginning and 687.7MB in the end (delta: 6.3MB). 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: 54]: 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, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.4s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 17.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2564 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2499 mSDsluCounter, 4067 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3149 mSDsCounter, 1316 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4715 IncrementalHoareTripleChecker+Invalid, 6031 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1316 mSolverCounterUnsat, 918 mSDtfsCounter, 4715 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 645 GetRequests, 389 SyntacticMatches, 24 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5728 ImplicationChecksByTransitivity, 30.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3319occurred in iteration=9, InterpolantAutomatonStates: 167, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 879 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 4757 PreInvPairs, 5627 NumberOfFragments, 1453 HoareAnnotationTreeSize, 4757 FomulaSimplifications, 16511 FormulaSimplificationTreeSizeReduction, 3.3s HoareSimplificationTime, 44 FomulaSimplificationsInter, 147130 FormulaSimplificationTreeSizeReductionInter, 14.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 716 ConstructedInterpolants, 0 QuantifiedInterpolants, 2590 SizeOfPredicates, 29 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 134/171 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: 941]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 863]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 == systemActive || !(\old(waterLevel) <= 2) - InvariantResult [Line: 701]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) < 2)) || 0 == systemActive) && ((((\old(pumpRunning) == 0 || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (pumpRunning == \old(pumpRunning) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || (pumpRunning == 0 && waterLevel <= 1))) && (((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((\old(waterLevel) < 2 || \old(pumpRunning) == 0) || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2))) && ((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || pumpRunning == 1) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 617]: Loop Invariant Derived loop invariant: ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) || 0 == systemActive) || !(\old(waterLevel) <= 2) - InvariantResult [Line: 679]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || 0 == systemActive) && ((pumpRunning == \old(pumpRunning) || !(waterLevel <= 1)) || 0 == systemActive) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) < 2)) || \old(waterLevel) == waterLevel) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) < 2)) || 0 == systemActive)) && ((((\old(pumpRunning) == 0 || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (pumpRunning == \old(pumpRunning) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || (pumpRunning == 0 && waterLevel <= 1))) && ((((\old(waterLevel) < 2 || \old(pumpRunning) == 0) || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2))) && ((((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) || (\old(waterLevel) == waterLevel && (!(pumpRunning == 0) || !(tmp == 0)))) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 872]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 739]: Loop Invariant Derived loop invariant: (((((methaneLevelCritical == aux-isMethaneAlarm()-aux && pumpRunning == 0) && tmp == 1) || !(\old(pumpRunning) == 0)) || !(waterLevel <= 2)) || 0 == systemActive) && (!(waterLevel <= 1) || 0 == systemActive) - InvariantResult [Line: 931]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1012]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 893]: Loop Invariant Derived loop invariant: ((tmp == 1 && tmp == systemActive) && splverifierCounter == 0) && waterLevel <= 2 - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: (((((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && !(0 == systemActive)) || !(pumpRunning == 0)) || methaneLevelCritical == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(tmp == 0)) && ((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && \old(waterLevel) == waterLevel) || !(\old(pumpRunning) == 0)) || !(\old(waterLevel) < 2)) || 0 == systemActive)) && (((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && !(0 == systemActive)) || \old(pumpRunning) == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (pumpRunning == \old(pumpRunning) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))))) && ((((\old(waterLevel) < 2 || \old(pumpRunning) == 0) || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2))) && (((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && \old(waterLevel) == waterLevel) || !(\old(pumpRunning) == 0)) || (\old(waterLevel) == waterLevel && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1))) || 0 == systemActive) || !(\old(waterLevel) <= 2)) - InvariantResult [Line: 1012]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && tmp == 1) && tmp == systemActive) && methaneLevelCritical <= 0) && 0 <= methaneLevelCritical) && waterLevel == 1 - InvariantResult [Line: 77]: Loop Invariant Derived loop invariant: (((((((((!(pumpRunning == 0) && \old(waterLevel) == waterLevel) && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)) || !(\old(pumpRunning) == 0)) || (waterLevel <= 1 && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) < 2)) || (pumpRunning == 0 && tmp___0 <= 1)) || 0 == systemActive)) && ((((\old(pumpRunning) == 0 || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) || !(\old(waterLevel) < 2)) || 0 == systemActive)) && ((((((pumpRunning == \old(pumpRunning) && tmp___0 <= 1) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) || ((pumpRunning == 0 && waterLevel <= 1) && tmp___0 <= 1)) || \old(pumpRunning) == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) - InvariantResult [Line: 873]: Loop Invariant Derived loop invariant: (((tmp == 1 && waterLevel <= 1) && tmp == systemActive) && splverifierCounter == 0) || ((((tmp == 1 && tmp == systemActive) && splverifierCounter == 0) && waterLevel <= 2) && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)) - InvariantResult [Line: 653]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || 0 == systemActive) && ((pumpRunning == \old(pumpRunning) || !(waterLevel <= 1)) || 0 == systemActive) RESULT: Ultimate proved your program to be correct! [2022-11-20 20:48:36,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4350a0b-d346-44a7-a423-ff607a16b8cb/bin/utaipan-6cKwYrpEi9/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