./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS --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 2d0674916b73dbf2024f3c8466ce9ed88de71a9608fd9c94d283a7055c71f71f --- 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-8393723 [2022-11-19 07:39:41,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:39:41,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:39:42,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:39:42,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:39:42,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:39:42,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:39:42,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:39:42,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:39:42,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:39:42,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:39:42,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:39:42,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:39:42,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:39:42,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:39:42,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:39:42,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:39:42,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:39:42,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:39:42,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:39:42,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:39:42,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:39:42,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:39:42,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:39:42,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:39:42,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:39:42,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:39:42,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:39:42,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:39:42,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:39:42,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:39:42,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:39:42,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:39:42,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:39:42,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:39:42,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:39:42,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:39:42,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:39:42,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:39:42,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:39:42,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:39:42,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:39:42,083 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:39:42,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:39:42,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:39:42,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:39:42,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:39:42,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:39:42,087 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:39:42,087 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:39:42,087 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:39:42,087 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:39:42,088 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:39:42,089 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:39:42,089 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:39:42,089 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:39:42,089 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:39:42,090 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:39:42,090 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:39:42,090 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:39:42,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:39:42,091 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:39:42,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:39:42,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:39:42,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:39:42,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:39:42,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:39:42,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:39:42,093 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:39:42,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:39:42,095 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:39:42,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:39:42,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:39:42,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:39:42,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:39:42,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:39:42,096 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:39:42,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:39:42,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:39:42,097 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:39:42,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:39:42,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:39:42,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:39:42,098 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_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0674916b73dbf2024f3c8466ce9ed88de71a9608fd9c94d283a7055c71f71f [2022-11-19 07:39:42,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:39:42,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:39:42,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:39:42,462 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:39:42,463 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:39:42,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec4_product26.cil.c [2022-11-19 07:39:42,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/data/f7f37dfad/3a5bc746e87f4665956f6fa4f17af948/FLAGa2b96e116 [2022-11-19 07:39:43,005 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:39:43,006 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/sv-benchmarks/c/product-lines/minepump_spec4_product26.cil.c [2022-11-19 07:39:43,031 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/data/f7f37dfad/3a5bc746e87f4665956f6fa4f17af948/FLAGa2b96e116 [2022-11-19 07:39:43,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/data/f7f37dfad/3a5bc746e87f4665956f6fa4f17af948 [2022-11-19 07:39:43,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:39:43,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:39:43,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:39:43,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:39:43,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:39:43,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cef035f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43, skipping insertion in model container [2022-11-19 07:39:43,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:39:43,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:39:43,586 WARN L234 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_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/sv-benchmarks/c/product-lines/minepump_spec4_product26.cil.c[1605,1618] [2022-11-19 07:39:43,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:39:43,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:39:43,732 WARN L234 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_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/sv-benchmarks/c/product-lines/minepump_spec4_product26.cil.c[1605,1618] [2022-11-19 07:39:43,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:39:43,800 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:39:43,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43 WrapperNode [2022-11-19 07:39:43,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:39:43,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:39:43,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:39:43,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:39:43,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,845 INFO L138 Inliner]: procedures = 54, calls = 96, calls flagged for inlining = 24, calls inlined = 18, statements flattened = 166 [2022-11-19 07:39:43,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:39:43,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:39:43,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:39:43,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:39:43,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,868 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:39:43,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:39:43,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:39:43,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:39:43,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43" (1/1) ... [2022-11-19 07:39:43,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:39:43,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:39:43,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:39:43,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:39:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:39:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 07:39:43,968 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 07:39:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:39:43,968 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:39:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:39:43,969 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:39:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 07:39:43,969 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 07:39:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:39:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 07:39:43,970 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 07:39:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:39:43,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:39:44,043 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:39:44,045 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:39:44,303 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:39:44,500 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:39:44,501 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:39:44,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:44 BoogieIcfgContainer [2022-11-19 07:39:44,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:39:44,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:39:44,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:39:44,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:39:44,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:43" (1/3) ... [2022-11-19 07:39:44,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6096eeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:44, skipping insertion in model container [2022-11-19 07:39:44,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:43" (2/3) ... [2022-11-19 07:39:44,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6096eeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:44, skipping insertion in model container [2022-11-19 07:39:44,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:44" (3/3) ... [2022-11-19 07:39:44,513 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product26.cil.c [2022-11-19 07:39:44,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:39:44,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:39:44,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:39:44,620 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;@24861299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:39:44,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:39:44,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 35 states have internal predecessors, (42), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:39:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:39:44,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:39:44,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:39:44,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:39:44,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:39:44,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1801927577, now seen corresponding path program 1 times [2022-11-19 07:39:44,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:39:44,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197184803] [2022-11-19 07:39:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:39:44,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:39:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:39:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:39:44,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:39:44,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197184803] [2022-11-19 07:39:44,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197184803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:39:44,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:39:44,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:39:44,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051865646] [2022-11-19 07:39:44,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:39:44,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:39:44,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:39:44,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:39:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:39:44,864 INFO L87 Difference]: Start difference. First operand has 44 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 35 states have internal predecessors, (42), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:39:44,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:39:44,931 INFO L93 Difference]: Finished difference Result 86 states and 117 transitions. [2022-11-19 07:39:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:39:44,934 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 07:39:44,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:39:44,943 INFO L225 Difference]: With dead ends: 86 [2022-11-19 07:39:44,944 INFO L226 Difference]: Without dead ends: 39 [2022-11-19 07:39:44,947 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 [2022-11-19 07:39:44,965 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:39:44,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:39:44,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-19 07:39:45,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-19 07:39:45,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 31 states have internal predecessors, (34), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 07:39:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2022-11-19 07:39:45,012 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 12 [2022-11-19 07:39:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:39:45,013 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2022-11-19 07:39:45,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:39:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2022-11-19 07:39:45,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:39:45,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:39:45,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:39:45,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:39:45,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:39:45,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:39:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1539940912, now seen corresponding path program 1 times [2022-11-19 07:39:45,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:39:45,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567035651] [2022-11-19 07:39:45,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:39:45,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:39:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:39:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:39:45,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:39:45,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567035651] [2022-11-19 07:39:45,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567035651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:39:45,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:39:45,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:39:45,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875285171] [2022-11-19 07:39:45,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:39:45,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:39:45,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:39:45,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:39:45,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:39:45,183 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:39:45,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:39:45,252 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2022-11-19 07:39:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:39:45,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:39:45,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:39:45,254 INFO L225 Difference]: With dead ends: 55 [2022-11-19 07:39:45,254 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 07:39:45,255 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 [2022-11-19 07:39:45,256 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:39:45,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:39:45,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 07:39:45,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-19 07:39:45,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 26 states have internal predecessors, (28), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 07:39:45,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-11-19 07:39:45,264 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 13 [2022-11-19 07:39:45,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:39:45,265 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-11-19 07:39:45,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:39:45,265 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-11-19 07:39:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:39:45,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:39:45,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:39:45,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:39:45,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:39:45,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:39:45,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1078080498, now seen corresponding path program 1 times [2022-11-19 07:39:45,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:39:45,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405631548] [2022-11-19 07:39:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:39:45,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:39:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:39:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:39:45,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:39:45,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405631548] [2022-11-19 07:39:45,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405631548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:39:45,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:39:45,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:39:45,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584293905] [2022-11-19 07:39:45,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:39:45,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:39:45,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:39:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:39:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:39:45,396 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:39:45,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:39:45,435 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2022-11-19 07:39:45,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:39:45,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 07:39:45,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:39:45,437 INFO L225 Difference]: With dead ends: 60 [2022-11-19 07:39:45,437 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 07:39:45,438 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 [2022-11-19 07:39:45,439 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:39:45,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:39:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 07:39:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-19 07:39:45,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 26 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 07:39:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-11-19 07:39:45,448 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 15 [2022-11-19 07:39:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:39:45,448 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-11-19 07:39:45,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:39:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-11-19 07:39:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:39:45,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:39:45,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:39:45,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:39:45,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:39:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:39:45,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1457438526, now seen corresponding path program 1 times [2022-11-19 07:39:45,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:39:45,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922677913] [2022-11-19 07:39:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:39:45,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:39:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:39:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:39:45,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:39:45,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922677913] [2022-11-19 07:39:45,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922677913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:39:45,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:39:45,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:39:45,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068015515] [2022-11-19 07:39:45,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:39:45,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:39:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:39:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:39:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:39:45,881 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:39:46,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:39:46,031 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2022-11-19 07:39:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:39:46,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 07:39:46,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:39:46,033 INFO L225 Difference]: With dead ends: 90 [2022-11-19 07:39:46,033 INFO L226 Difference]: Without dead ends: 61 [2022-11-19 07:39:46,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:39:46,035 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 112 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 [2022-11-19 07:39:46,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 112 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:39:46,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-19 07:39:46,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 34. [2022-11-19 07:39:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.25) internal successors, (30), 28 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 07:39:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-11-19 07:39:46,053 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2022-11-19 07:39:46,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:39:46,054 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-11-19 07:39:46,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:39:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-11-19 07:39:46,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:39:46,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:39:46,056 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] [2022-11-19 07:39:46,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:39:46,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:39:46,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:39:46,057 INFO L85 PathProgramCache]: Analyzing trace with hash 462022602, now seen corresponding path program 1 times [2022-11-19 07:39:46,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:39:46,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146533605] [2022-11-19 07:39:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:39:46,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:39:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:39:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:39:46,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:39:46,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146533605] [2022-11-19 07:39:46,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146533605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:39:46,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:39:46,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:39:46,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125611899] [2022-11-19 07:39:46,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:39:46,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:39:46,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:39:46,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:39:46,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:39:46,156 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:39:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:39:46,278 INFO L93 Difference]: Finished difference Result 112 states and 139 transitions. [2022-11-19 07:39:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:39:46,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-19 07:39:46,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:39:46,280 INFO L225 Difference]: With dead ends: 112 [2022-11-19 07:39:46,280 INFO L226 Difference]: Without dead ends: 80 [2022-11-19 07:39:46,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:39:46,282 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 58 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:39:46,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 105 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:39:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-19 07:39:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2022-11-19 07:39:46,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 50 states have internal predecessors, (56), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-19 07:39:46,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2022-11-19 07:39:46,301 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 20 [2022-11-19 07:39:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:39:46,301 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2022-11-19 07:39:46,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:39:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2022-11-19 07:39:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:39:46,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:39:46,303 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] [2022-11-19 07:39:46,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:39:46,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:39:46,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:39:46,304 INFO L85 PathProgramCache]: Analyzing trace with hash -583298960, now seen corresponding path program 1 times [2022-11-19 07:39:46,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:39:46,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368098674] [2022-11-19 07:39:46,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:39:46,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:39:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:39:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:39:46,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:39:46,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368098674] [2022-11-19 07:39:46,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368098674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:39:46,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:39:46,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:39:46,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918682931] [2022-11-19 07:39:46,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:39:46,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:39:46,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:39:46,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:39:46,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:39:46,452 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:39:46,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:39:46,501 INFO L93 Difference]: Finished difference Result 111 states and 135 transitions. [2022-11-19 07:39:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:39:46,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-19 07:39:46,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:39:46,502 INFO L225 Difference]: With dead ends: 111 [2022-11-19 07:39:46,502 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:39:46,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:39:46,504 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:39:46,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 38 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:39:46,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:39:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:39:46,506 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) [2022-11-19 07:39:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:39:46,507 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-11-19 07:39:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:39:46,507 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:39:46,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:39:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:39:46,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:39:46,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:39:46,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:39:46,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:39:47,373 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 167 173) no Hoare annotation was computed. [2022-11-19 07:39:47,373 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 167 173) the Hoare annotation is: true [2022-11-19 07:39:47,374 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 345 356) the Hoare annotation is: true [2022-11-19 07:39:47,374 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 345 356) no Hoare annotation was computed. [2022-11-19 07:39:47,374 INFO L902 garLoopResultBuilder]: At program point L864(lines 839 868) the Hoare annotation is: true [2022-11-19 07:39:47,374 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 839 868) no Hoare annotation was computed. [2022-11-19 07:39:47,374 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 839 868) the Hoare annotation is: true [2022-11-19 07:39:47,374 INFO L899 garLoopResultBuilder]: For program point L860(line 860) no Hoare annotation was computed. [2022-11-19 07:39:47,374 INFO L899 garLoopResultBuilder]: For program point L853(lines 853 857) no Hoare annotation was computed. [2022-11-19 07:39:47,375 INFO L902 garLoopResultBuilder]: At program point L853-1(lines 853 857) the Hoare annotation is: true [2022-11-19 07:39:47,375 INFO L902 garLoopResultBuilder]: At program point L849-2(lines 849 863) the Hoare annotation is: true [2022-11-19 07:39:47,375 INFO L902 garLoopResultBuilder]: At program point L845(line 845) the Hoare annotation is: true [2022-11-19 07:39:47,375 INFO L899 garLoopResultBuilder]: For program point L845-1(line 845) no Hoare annotation was computed. [2022-11-19 07:39:47,375 INFO L899 garLoopResultBuilder]: For program point L147-1(lines 146 165) no Hoare annotation was computed. [2022-11-19 07:39:47,375 INFO L899 garLoopResultBuilder]: For program point L420(lines 420 426) no Hoare annotation was computed. [2022-11-19 07:39:47,376 INFO L895 garLoopResultBuilder]: At program point L416(lines 416 429) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= 0 |old(~pumpRunning~0)|)))) (and (or .cse0 (and (<= ~pumpRunning~0 0) (<= 0 ~pumpRunning~0)) .cse1 .cse2) (or (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1 (and (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| 1) (= ~waterLevel~0 1)) .cse2))) [2022-11-19 07:39:47,376 INFO L895 garLoopResultBuilder]: At program point L416-1(lines 408 432) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= 0 |old(~pumpRunning~0)|)))) (and (or .cse0 (and (<= ~pumpRunning~0 0) (<= 0 ~pumpRunning~0)) .cse1 .cse2) (or (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1 (and (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| 1) (= ~waterLevel~0 1)) .cse2))) [2022-11-19 07:39:47,376 INFO L895 garLoopResultBuilder]: At program point L189(line 189) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (not (<= |old(~pumpRunning~0)| 0)) (not (<= 0 |old(~pumpRunning~0)|))) [2022-11-19 07:39:47,376 INFO L895 garLoopResultBuilder]: At program point L194(line 194) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= 0 |old(~pumpRunning~0)|)))) (and (or .cse0 (and (<= ~pumpRunning~0 0) (<= 0 ~pumpRunning~0)) .cse1 .cse2) (or (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1 (= ~waterLevel~0 1) .cse2))) [2022-11-19 07:39:47,377 INFO L895 garLoopResultBuilder]: At program point L194-1(lines 175 199) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= 0 |old(~pumpRunning~0)|)))) (and (or .cse0 (and (<= ~pumpRunning~0 0) (<= 0 ~pumpRunning~0)) .cse1 .cse2) (or (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1 (= ~waterLevel~0 1) .cse2))) [2022-11-19 07:39:47,377 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (not (<= |old(~pumpRunning~0)| 0)) (not (<= 0 |old(~pumpRunning~0)|))) [2022-11-19 07:39:47,378 INFO L895 garLoopResultBuilder]: At program point L154-1(lines 154 160) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= 0 |old(~pumpRunning~0)|)))) (and (or .cse0 (and (<= ~pumpRunning~0 0) (<= 0 ~pumpRunning~0)) .cse1 .cse2) (or (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1 (= ~waterLevel~0 1) .cse2))) [2022-11-19 07:39:47,378 INFO L895 garLoopResultBuilder]: At program point L183(lines 183 191) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (not (<= |old(~pumpRunning~0)| 0)) (not (<= 0 |old(~pumpRunning~0)|))) [2022-11-19 07:39:47,378 INFO L895 garLoopResultBuilder]: At program point L179(lines 179 196) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= 0 |old(~pumpRunning~0)|)))) (and (or .cse0 (and (<= ~pumpRunning~0 0) (<= 0 ~pumpRunning~0)) .cse1 .cse2) (or (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1 (= ~waterLevel~0 1) .cse2))) [2022-11-19 07:39:47,379 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 143 166) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= 0 |old(~pumpRunning~0)|)))) (and (or .cse0 (and (<= ~pumpRunning~0 0) (<= 0 ~pumpRunning~0)) .cse1 .cse2) (or (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1 (= ~waterLevel~0 1) .cse2))) [2022-11-19 07:39:47,379 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 143 166) no Hoare annotation was computed. [2022-11-19 07:39:47,379 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-19 07:39:47,379 INFO L895 garLoopResultBuilder]: At program point L122(lines 73 123) the Hoare annotation is: false [2022-11-19 07:39:47,379 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 100) no Hoare annotation was computed. [2022-11-19 07:39:47,380 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-19 07:39:47,380 INFO L895 garLoopResultBuilder]: At program point L94-1(lines 94 100) the Hoare annotation is: (and (<= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= 0 ~pumpRunning~0)) [2022-11-19 07:39:47,380 INFO L895 garLoopResultBuilder]: At program point L920(lines 920 927) the Hoare annotation is: (and (<= ~pumpRunning~0 0) (= 1 ~systemActive~0) (<= 0 ~pumpRunning~0) (= ~waterLevel~0 1)) [2022-11-19 07:39:47,380 INFO L895 garLoopResultBuilder]: At program point L119(lines 74 121) the Hoare annotation is: (and (<= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= 0 ~pumpRunning~0)) [2022-11-19 07:39:47,381 INFO L895 garLoopResultBuilder]: At program point L86(line 86) the Hoare annotation is: (and (<= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= 0 ~pumpRunning~0)) [2022-11-19 07:39:47,381 INFO L902 garLoopResultBuilder]: At program point L920-2(lines 920 927) the Hoare annotation is: true [2022-11-19 07:39:47,381 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:39:47,381 INFO L895 garLoopResultBuilder]: At program point L112-2(lines 104 117) the Hoare annotation is: (and (<= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= 0 ~pumpRunning~0)) [2022-11-19 07:39:47,381 INFO L899 garLoopResultBuilder]: For program point L75(lines 74 121) no Hoare annotation was computed. [2022-11-19 07:39:47,382 INFO L895 garLoopResultBuilder]: At program point L96(line 96) the Hoare annotation is: (and (<= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= 0 ~pumpRunning~0)) [2022-11-19 07:39:47,382 INFO L902 garLoopResultBuilder]: At program point L125(lines 64 129) the Hoare annotation is: true [2022-11-19 07:39:47,382 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 90) no Hoare annotation was computed. [2022-11-19 07:39:47,382 INFO L899 garLoopResultBuilder]: For program point L84-1(lines 84 90) no Hoare annotation was computed. [2022-11-19 07:39:47,382 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 333 344) no Hoare annotation was computed. [2022-11-19 07:39:47,383 INFO L902 garLoopResultBuilder]: At program point waterRiseENTRY(lines 333 344) the Hoare annotation is: true [2022-11-19 07:39:47,386 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-19 07:39:47,388 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:39:47,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:39:47 BoogieIcfgContainer [2022-11-19 07:39:47,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:39:47,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:39:47,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:39:47,421 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:39:47,422 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:44" (3/4) ... [2022-11-19 07:39:47,425 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:39:47,430 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-19 07:39:47,430 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-19 07:39:47,431 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-19 07:39:47,431 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-19 07:39:47,431 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-19 07:39:47,443 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2022-11-19 07:39:47,443 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-19 07:39:47,444 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-19 07:39:47,446 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:39:47,447 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:39:47,482 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(1 == systemActive) || (pumpRunning <= 0 && 0 <= pumpRunning)) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) && ((((!(\old(waterLevel) == 1) || !(1 == systemActive)) || !(\old(pumpRunning) <= 0)) || waterLevel == 1) || !(0 <= \old(pumpRunning))) [2022-11-19 07:39:47,482 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(1 == systemActive) || (pumpRunning <= 0 && 0 <= pumpRunning)) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) && ((((!(\old(waterLevel) == 1) || !(1 == systemActive)) || !(\old(pumpRunning) <= 0)) || waterLevel == 1) || !(0 <= \old(pumpRunning))) [2022-11-19 07:39:47,483 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(1 == systemActive) || (pumpRunning <= 0 && 0 <= pumpRunning)) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) && ((((!(\old(waterLevel) == 1) || !(1 == systemActive)) || !(\old(pumpRunning) <= 0)) || waterLevel == 1) || !(0 <= \old(pumpRunning))) [2022-11-19 07:39:47,483 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(1 == systemActive) || (pumpRunning <= 0 && 0 <= pumpRunning)) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) && ((((!(\old(waterLevel) == 1) || !(1 == systemActive)) || !(\old(pumpRunning) <= 0)) || waterLevel == 1) || !(0 <= \old(pumpRunning))) [2022-11-19 07:39:47,485 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(1 == systemActive) || (pumpRunning <= 0 && 0 <= pumpRunning)) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) && ((((!(\old(waterLevel) == 1) || !(1 == systemActive)) || !(\old(pumpRunning) <= 0)) || (tmp == 1 && waterLevel == 1)) || !(0 <= \old(pumpRunning))) [2022-11-19 07:39:47,485 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(1 == systemActive) || (pumpRunning <= 0 && 0 <= pumpRunning)) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) && ((((!(\old(waterLevel) == 1) || !(1 == systemActive)) || !(\old(pumpRunning) <= 0)) || (tmp == 1 && waterLevel == 1)) || !(0 <= \old(pumpRunning))) [2022-11-19 07:39:47,486 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(1 == systemActive) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning)) [2022-11-19 07:39:47,493 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(1 == systemActive) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning)) [2022-11-19 07:39:47,526 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:39:47,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:39:47,527 INFO L158 Benchmark]: Toolchain (without parser) took 4178.82ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 64.3MB in the beginning and 59.4MB in the end (delta: 4.9MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2022-11-19 07:39:47,527 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:39:47,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 445.00ms. Allocated memory is still 109.1MB. Free memory was 64.1MB in the beginning and 74.9MB in the end (delta: -10.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:39:47,528 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.19ms. Allocated memory is still 109.1MB. Free memory was 74.9MB in the beginning and 72.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:39:47,528 INFO L158 Benchmark]: Boogie Preprocessor took 24.83ms. Allocated memory is still 109.1MB. Free memory was 72.8MB in the beginning and 71.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:39:47,528 INFO L158 Benchmark]: RCFGBuilder took 631.77ms. Allocated memory is still 109.1MB. Free memory was 71.4MB in the beginning and 48.6MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-19 07:39:47,529 INFO L158 Benchmark]: TraceAbstraction took 2914.72ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 48.0MB in the beginning and 64.7MB in the end (delta: -16.7MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2022-11-19 07:39:47,529 INFO L158 Benchmark]: Witness Printer took 105.19ms. Allocated memory is still 138.4MB. Free memory was 64.7MB in the beginning and 59.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:39:47,531 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 109.1MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 445.00ms. Allocated memory is still 109.1MB. Free memory was 64.1MB in the beginning and 74.9MB in the end (delta: -10.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.19ms. Allocated memory is still 109.1MB. Free memory was 74.9MB in the beginning and 72.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.83ms. Allocated memory is still 109.1MB. Free memory was 72.8MB in the beginning and 71.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 631.77ms. Allocated memory is still 109.1MB. Free memory was 71.4MB in the beginning and 48.6MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2914.72ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 48.0MB in the beginning and 64.7MB in the end (delta: -16.7MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Witness Printer took 105.19ms. Allocated memory is still 138.4MB. Free memory was 64.7MB in the beginning and 59.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 147 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 143 mSDsluCounter, 362 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 189 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 193 IncrementalHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 173 mSDtfsCounter, 193 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 44 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 28 LocationsWithAnnotation, 169 PreInvPairs, 190 NumberOfFragments, 424 HoareAnnotationTreeSize, 169 FomulaSimplifications, 329 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 28 FomulaSimplificationsInter, 1189 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 920]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: (!(1 == systemActive) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning)) - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: ((pumpRunning <= 0 && 1 == systemActive) && splverifierCounter == 0) && 0 <= pumpRunning - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 416]: Loop Invariant Derived loop invariant: (((!(1 == systemActive) || (pumpRunning <= 0 && 0 <= pumpRunning)) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) && ((((!(\old(waterLevel) == 1) || !(1 == systemActive)) || !(\old(pumpRunning) <= 0)) || (tmp == 1 && waterLevel == 1)) || !(0 <= \old(pumpRunning))) - InvariantResult [Line: 920]: Loop Invariant Derived loop invariant: ((pumpRunning <= 0 && 1 == systemActive) && 0 <= pumpRunning) && waterLevel == 1 - InvariantResult [Line: 179]: Loop Invariant Derived loop invariant: (((!(1 == systemActive) || (pumpRunning <= 0 && 0 <= pumpRunning)) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) && ((((!(\old(waterLevel) == 1) || !(1 == systemActive)) || !(\old(pumpRunning) <= 0)) || waterLevel == 1) || !(0 <= \old(pumpRunning))) - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: (((!(1 == systemActive) || (pumpRunning <= 0 && 0 <= pumpRunning)) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) && ((((!(\old(waterLevel) == 1) || !(1 == systemActive)) || !(\old(pumpRunning) <= 0)) || waterLevel == 1) || !(0 <= \old(pumpRunning))) - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: ((pumpRunning <= 0 && 1 == systemActive) && splverifierCounter == 0) && 0 <= pumpRunning - InvariantResult [Line: 408]: Loop Invariant Derived loop invariant: (((!(1 == systemActive) || (pumpRunning <= 0 && 0 <= pumpRunning)) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) && ((((!(\old(waterLevel) == 1) || !(1 == systemActive)) || !(\old(pumpRunning) <= 0)) || (tmp == 1 && waterLevel == 1)) || !(0 <= \old(pumpRunning))) - InvariantResult [Line: 154]: Loop Invariant Derived loop invariant: (((!(1 == systemActive) || (pumpRunning <= 0 && 0 <= pumpRunning)) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) && ((((!(\old(waterLevel) == 1) || !(1 == systemActive)) || !(\old(pumpRunning) <= 0)) || waterLevel == 1) || !(0 <= \old(pumpRunning))) - InvariantResult [Line: 183]: Loop Invariant Derived loop invariant: (!(1 == systemActive) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning)) - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: (((!(1 == systemActive) || (pumpRunning <= 0 && 0 <= pumpRunning)) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) && ((((!(\old(waterLevel) == 1) || !(1 == systemActive)) || !(\old(pumpRunning) <= 0)) || waterLevel == 1) || !(0 <= \old(pumpRunning))) - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 839]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 849]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-19 07:39:47,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed8bd1f4-7caf-4ee4-86e2-877e0482874c/bin/utaipan-I9t0OCRTmS/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