./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh --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 471ad46a1662a2ee36763023473e29e175f1086d40bbf36d792af661871bf09e --- 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-2329fc7 [2022-12-14 06:16:03,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:16:03,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:16:03,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:16:03,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:16:03,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:16:03,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:16:03,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:16:03,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:16:03,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:16:03,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:16:03,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:16:03,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:16:03,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:16:03,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:16:03,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:16:03,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:16:03,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:16:03,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:16:03,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:16:03,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:16:03,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:16:03,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:16:03,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:16:03,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:16:03,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:16:03,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:16:03,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:16:03,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:16:03,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:16:03,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:16:03,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:16:03,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:16:03,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:16:03,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:16:03,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:16:03,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:16:03,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:16:03,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:16:03,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:16:03,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:16:03,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:16:03,902 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:16:03,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:16:03,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:16:03,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:16:03,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:16:03,903 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:16:03,903 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:16:03,903 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:16:03,903 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:16:03,904 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:16:03,904 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:16:03,904 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:16:03,904 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:16:03,904 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:16:03,904 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:16:03,905 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:16:03,905 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:16:03,905 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:16:03,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:16:03,906 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:16:03,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:16:03,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:16:03,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:16:03,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:16:03,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:16:03,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:16:03,907 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:16:03,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:16:03,907 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:16:03,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:16:03,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:16:03,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:16:03,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:16:03,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:16:03,908 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:16:03,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:16:03,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:16:03,909 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:16:03,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:16:03,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:16:03,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:16:03,909 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_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 471ad46a1662a2ee36763023473e29e175f1086d40bbf36d792af661871bf09e [2022-12-14 06:16:04,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:16:04,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:16:04,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:16:04,110 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:16:04,110 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:16:04,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c [2022-12-14 06:16:06,712 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:16:06,879 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:16:06,880 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c [2022-12-14 06:16:06,888 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/data/dda9fbdb7/07db011c774e44558b88212c19172171/FLAGd842f3309 [2022-12-14 06:16:06,900 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/data/dda9fbdb7/07db011c774e44558b88212c19172171 [2022-12-14 06:16:06,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:16:06,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:16:06,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:16:06,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:16:06,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:16:06,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:16:06" (1/1) ... [2022-12-14 06:16:06,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea9d2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:06, skipping insertion in model container [2022-12-14 06:16:06,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:16:06" (1/1) ... [2022-12-14 06:16:06,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:16:06,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:16:07,048 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c[1605,1618] [2022-12-14 06:16:07,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:16:07,132 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:16:07,143 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c[1605,1618] [2022-12-14 06:16:07,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:16:07,195 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:16:07,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07 WrapperNode [2022-12-14 06:16:07,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:16:07,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:16:07,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:16:07,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:16:07,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07" (1/1) ... [2022-12-14 06:16:07,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07" (1/1) ... [2022-12-14 06:16:07,230 INFO L138 Inliner]: procedures = 56, calls = 99, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 196 [2022-12-14 06:16:07,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:16:07,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:16:07,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:16:07,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:16:07,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07" (1/1) ... [2022-12-14 06:16:07,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07" (1/1) ... [2022-12-14 06:16:07,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07" (1/1) ... [2022-12-14 06:16:07,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07" (1/1) ... [2022-12-14 06:16:07,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07" (1/1) ... [2022-12-14 06:16:07,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07" (1/1) ... [2022-12-14 06:16:07,249 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07" (1/1) ... [2022-12-14 06:16:07,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07" (1/1) ... [2022-12-14 06:16:07,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:16:07,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:16:07,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:16:07,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:16:07,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07" (1/1) ... [2022-12-14 06:16:07,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:16:07,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:16:07,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:16:07,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:16:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:16:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-12-14 06:16:07,317 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-12-14 06:16:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-12-14 06:16:07,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-12-14 06:16:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 06:16:07,317 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 06:16:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 06:16:07,317 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 06:16:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-12-14 06:16:07,318 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-12-14 06:16:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:16:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-12-14 06:16:07,318 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-12-14 06:16:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:16:07,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:16:07,384 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:16:07,386 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:16:07,600 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:16:07,672 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:16:07,672 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 06:16:07,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:16:07 BoogieIcfgContainer [2022-12-14 06:16:07,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:16:07,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:16:07,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:16:07,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:16:07,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:16:06" (1/3) ... [2022-12-14 06:16:07,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e36557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:16:07, skipping insertion in model container [2022-12-14 06:16:07,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:07" (2/3) ... [2022-12-14 06:16:07,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e36557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:16:07, skipping insertion in model container [2022-12-14 06:16:07,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:16:07" (3/3) ... [2022-12-14 06:16:07,681 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product44.cil.c [2022-12-14 06:16:07,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:16:07,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:16:07,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:16:07,737 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;@d856c7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:16:07,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:16:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 06:16:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 06:16:07,748 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:16:07,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:16:07,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:16:07,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:16:07,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2083981268, now seen corresponding path program 1 times [2022-12-14 06:16:07,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:16:07,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922426754] [2022-12-14 06:16:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:16:07,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:16:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:16:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:16:07,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:16:07,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922426754] [2022-12-14 06:16:07,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922426754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:16:07,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:16:07,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:16:07,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687758836] [2022-12-14 06:16:07,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:16:07,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 06:16:07,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:16:07,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 06:16:07,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:16:07,922 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:16:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:16:07,985 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-12-14 06:16:07,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 06:16:07,987 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-12-14 06:16:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:16:07,994 INFO L225 Difference]: With dead ends: 100 [2022-12-14 06:16:07,994 INFO L226 Difference]: Without dead ends: 46 [2022-12-14 06:16:07,996 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 [2022-12-14 06:16:07,998 INFO L413 NwaCegarLoop]: 49 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, 49 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 [2022-12-14 06:16:07,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:16:08,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-14 06:16:08,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-12-14 06:16:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3) internal successors, (39), 35 states have internal predecessors, (39), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 06:16:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-12-14 06:16:08,026 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 17 [2022-12-14 06:16:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:16:08,026 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-12-14 06:16:08,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:16:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-12-14 06:16:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 06:16:08,028 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:16:08,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:16:08,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:16:08,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:16:08,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:16:08,029 INFO L85 PathProgramCache]: Analyzing trace with hash -611216862, now seen corresponding path program 1 times [2022-12-14 06:16:08,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:16:08,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83979722] [2022-12-14 06:16:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:16:08,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:16:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:16:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:16:08,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:16:08,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83979722] [2022-12-14 06:16:08,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83979722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:16:08,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:16:08,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:16:08,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772953221] [2022-12-14 06:16:08,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:16:08,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:16:08,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:16:08,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:16:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:16:08,095 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:16:08,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:16:08,127 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2022-12-14 06:16:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:16:08,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-12-14 06:16:08,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:16:08,128 INFO L225 Difference]: With dead ends: 69 [2022-12-14 06:16:08,128 INFO L226 Difference]: Without dead ends: 38 [2022-12-14 06:16:08,129 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 [2022-12-14 06:16:08,130 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:16:08,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 61 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:16:08,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-14 06:16:08,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-12-14 06:16:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 06:16:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-12-14 06:16:08,134 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 18 [2022-12-14 06:16:08,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:16:08,135 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-12-14 06:16:08,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:16:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-12-14 06:16:08,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 06:16:08,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:16:08,135 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] [2022-12-14 06:16:08,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:16:08,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:16:08,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:16:08,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1812935190, now seen corresponding path program 1 times [2022-12-14 06:16:08,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:16:08,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883803508] [2022-12-14 06:16:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:16:08,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:16:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:16:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:16:08,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:16:08,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883803508] [2022-12-14 06:16:08,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883803508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:16:08,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:16:08,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:16:08,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435744881] [2022-12-14 06:16:08,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:16:08,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 06:16:08,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:16:08,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 06:16:08,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:16:08,238 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-12-14 06:16:08,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:16:08,341 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2022-12-14 06:16:08,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:16:08,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 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 [2022-12-14 06:16:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:16:08,343 INFO L225 Difference]: With dead ends: 107 [2022-12-14 06:16:08,343 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 06:16:08,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:16:08,345 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 27 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:16:08,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 175 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:16:08,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 06:16:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2022-12-14 06:16:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 52 states have internal predecessors, (57), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 06:16:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2022-12-14 06:16:08,356 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 20 [2022-12-14 06:16:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:16:08,356 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2022-12-14 06:16:08,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-12-14 06:16:08,357 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2022-12-14 06:16:08,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 06:16:08,357 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:16:08,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:16:08,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:16:08,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:16:08,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:16:08,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1846826398, now seen corresponding path program 1 times [2022-12-14 06:16:08,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:16:08,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918743943] [2022-12-14 06:16:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:16:08,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:16:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:16:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:16:08,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:16:08,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918743943] [2022-12-14 06:16:08,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918743943] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:16:08,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:16:08,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:16:08,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893056469] [2022-12-14 06:16:08,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:16:08,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:16:08,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:16:08,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:16:08,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:16:08,434 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 06:16:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:16:08,481 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2022-12-14 06:16:08,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:16:08,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-12-14 06:16:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:16:08,483 INFO L225 Difference]: With dead ends: 103 [2022-12-14 06:16:08,483 INFO L226 Difference]: Without dead ends: 101 [2022-12-14 06:16:08,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:16:08,485 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:16:08,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 73 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:16:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-12-14 06:16:08,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-12-14 06:16:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 66 states have (on average 1.303030303030303) internal successors, (86), 78 states have internal predecessors, (86), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (22), 17 states have call predecessors, (22), 20 states have call successors, (22) [2022-12-14 06:16:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2022-12-14 06:16:08,501 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 23 [2022-12-14 06:16:08,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:16:08,502 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2022-12-14 06:16:08,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 06:16:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2022-12-14 06:16:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 06:16:08,503 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:16:08,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:16:08,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 06:16:08,504 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:16:08,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:16:08,504 INFO L85 PathProgramCache]: Analyzing trace with hash -726186052, now seen corresponding path program 1 times [2022-12-14 06:16:08,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:16:08,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69451925] [2022-12-14 06:16:08,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:16:08,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:16:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:16:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 06:16:08,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:16:08,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69451925] [2022-12-14 06:16:08,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69451925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:16:08,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:16:08,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 06:16:08,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533699951] [2022-12-14 06:16:08,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:16:08,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 06:16:08,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:16:08,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 06:16:08,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:16:08,886 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 06:16:09,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:16:09,192 INFO L93 Difference]: Finished difference Result 317 states and 406 transitions. [2022-12-14 06:16:09,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 06:16:09,193 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 42 [2022-12-14 06:16:09,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:16:09,196 INFO L225 Difference]: With dead ends: 317 [2022-12-14 06:16:09,196 INFO L226 Difference]: Without dead ends: 247 [2022-12-14 06:16:09,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-12-14 06:16:09,199 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 114 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:16:09,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 142 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:16:09,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-12-14 06:16:09,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 219. [2022-12-14 06:16:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 147 states have (on average 1.272108843537415) internal successors, (187), 166 states have internal predecessors, (187), 36 states have call successors, (36), 30 states have call predecessors, (36), 35 states have return successors, (58), 33 states have call predecessors, (58), 36 states have call successors, (58) [2022-12-14 06:16:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 281 transitions. [2022-12-14 06:16:09,244 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 281 transitions. Word has length 42 [2022-12-14 06:16:09,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:16:09,244 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 281 transitions. [2022-12-14 06:16:09,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 06:16:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 281 transitions. [2022-12-14 06:16:09,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 06:16:09,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:16:09,246 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:16:09,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:16:09,247 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:16:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:16:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1173428774, now seen corresponding path program 1 times [2022-12-14 06:16:09,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:16:09,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717029322] [2022-12-14 06:16:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:16:09,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:16:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:16:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 06:16:09,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:16:09,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717029322] [2022-12-14 06:16:09,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717029322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:16:09,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:16:09,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:16:09,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477864018] [2022-12-14 06:16:09,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:16:09,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:16:09,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:16:09,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:16:09,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:16:09,486 INFO L87 Difference]: Start difference. First operand 219 states and 281 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-14 06:16:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:16:09,678 INFO L93 Difference]: Finished difference Result 510 states and 669 transitions. [2022-12-14 06:16:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:16:09,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2022-12-14 06:16:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:16:09,681 INFO L225 Difference]: With dead ends: 510 [2022-12-14 06:16:09,682 INFO L226 Difference]: Without dead ends: 293 [2022-12-14 06:16:09,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:16:09,684 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 57 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:16:09,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 158 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:16:09,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-12-14 06:16:09,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 237. [2022-12-14 06:16:09,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 158 states have (on average 1.2658227848101267) internal successors, (200), 178 states have internal predecessors, (200), 39 states have call successors, (39), 34 states have call predecessors, (39), 39 states have return successors, (64), 34 states have call predecessors, (64), 39 states have call successors, (64) [2022-12-14 06:16:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 303 transitions. [2022-12-14 06:16:09,728 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 303 transitions. Word has length 49 [2022-12-14 06:16:09,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:16:09,728 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 303 transitions. [2022-12-14 06:16:09,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-14 06:16:09,729 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 303 transitions. [2022-12-14 06:16:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 06:16:09,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:16:09,730 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:16:09,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 06:16:09,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:16:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:16:09,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1584541960, now seen corresponding path program 1 times [2022-12-14 06:16:09,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:16:09,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930005269] [2022-12-14 06:16:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:16:09,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:16:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:16:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 06:16:09,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:16:09,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930005269] [2022-12-14 06:16:09,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930005269] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:16:09,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704278161] [2022-12-14 06:16:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:16:09,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:16:09,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:16:09,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:16:09,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:16:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:16:10,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 06:16:10,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:16:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 06:16:10,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:16:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 06:16:10,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704278161] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:16:10,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1817345632] [2022-12-14 06:16:10,501 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-12-14 06:16:10,501 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:16:10,504 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:16:10,508 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:16:10,509 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:16:13,133 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 40 for LOIs [2022-12-14 06:16:13,139 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2022-12-14 06:16:13,295 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 49 for LOIs [2022-12-14 06:16:13,301 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 24 for LOIs [2022-12-14 06:16:13,303 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:16:15,965 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3394#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1|) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483648)) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= 0 ~methAndRunningLastTime~0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 2147483647) (<= 0 |old(~methAndRunningLastTime~0)|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 0)) (= ~head~0.base 0) (<= 0 |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1|) (= |#NULL.offset| 0) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| ~methaneLevelCritical~0) (not (= ~methAndRunningLastTime~0 0)) (<= 0 |#StackHeapBarrier|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 0)) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-12-14 06:16:15,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:16:15,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:16:15,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 24 [2022-12-14 06:16:15,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123219803] [2022-12-14 06:16:15,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:16:15,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 06:16:15,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:16:15,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 06:16:15,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2389, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 06:16:15,968 INFO L87 Difference]: Start difference. First operand 237 states and 303 transitions. Second operand has 24 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 7 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-14 06:16:17,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:16:17,095 INFO L93 Difference]: Finished difference Result 781 states and 1052 transitions. [2022-12-14 06:16:17,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-14 06:16:17,096 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 7 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) Word has length 52 [2022-12-14 06:16:17,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:16:17,098 INFO L225 Difference]: With dead ends: 781 [2022-12-14 06:16:17,098 INFO L226 Difference]: Without dead ends: 558 [2022-12-14 06:16:17,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2323 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=681, Invalid=6291, Unknown=0, NotChecked=0, Total=6972 [2022-12-14 06:16:17,101 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 515 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:16:17,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 327 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 06:16:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-12-14 06:16:17,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 445. [2022-12-14 06:16:17,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 297 states have (on average 1.2188552188552189) internal successors, (362), 331 states have internal predecessors, (362), 69 states have call successors, (69), 67 states have call predecessors, (69), 78 states have return successors, (115), 67 states have call predecessors, (115), 69 states have call successors, (115) [2022-12-14 06:16:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 546 transitions. [2022-12-14 06:16:17,139 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 546 transitions. Word has length 52 [2022-12-14 06:16:17,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:16:17,140 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 546 transitions. [2022-12-14 06:16:17,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 7 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-14 06:16:17,140 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 546 transitions. [2022-12-14 06:16:17,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 06:16:17,142 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:16:17,142 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:16:17,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:16:17,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:16:17,344 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:16:17,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:16:17,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1712270244, now seen corresponding path program 1 times [2022-12-14 06:16:17,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:16:17,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289731600] [2022-12-14 06:16:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:16:17,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:16:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:16:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 06:16:17,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:16:17,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289731600] [2022-12-14 06:16:17,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289731600] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:16:17,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852950164] [2022-12-14 06:16:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:16:17,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:16:17,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:16:17,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:16:17,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:16:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:16:17,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 06:16:17,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:16:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 06:16:17,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:16:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 06:16:18,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852950164] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:16:18,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1620725982] [2022-12-14 06:16:18,144 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-12-14 06:16:18,144 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:16:18,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:16:18,145 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:16:18,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:16:19,887 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 39 for LOIs [2022-12-14 06:16:19,893 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2022-12-14 06:16:20,043 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 49 for LOIs [2022-12-14 06:16:20,054 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 24 for LOIs [2022-12-14 06:16:20,056 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:16:22,642 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5800#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1|) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483648)) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= 0 ~methAndRunningLastTime~0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 2147483647) (<= 0 |old(~methAndRunningLastTime~0)|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 0)) (= ~head~0.base 0) (<= 0 |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1|) (= |#NULL.offset| 0) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| ~methaneLevelCritical~0) (not (= ~methAndRunningLastTime~0 0)) (<= 0 |#StackHeapBarrier|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 0)) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-12-14 06:16:22,642 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:16:22,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:16:22,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 8] total 20 [2022-12-14 06:16:22,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901313688] [2022-12-14 06:16:22,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:16:22,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 06:16:22,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:16:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 06:16:22,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2018, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 06:16:22,646 INFO L87 Difference]: Start difference. First operand 445 states and 546 transitions. Second operand has 20 states, 18 states have (on average 4.722222222222222) internal successors, (85), 19 states have internal predecessors, (85), 9 states have call successors, (20), 6 states have call predecessors, (20), 8 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-12-14 06:16:23,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:16:23,815 INFO L93 Difference]: Finished difference Result 1031 states and 1310 transitions. [2022-12-14 06:16:23,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-14 06:16:23,815 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.722222222222222) internal successors, (85), 19 states have internal predecessors, (85), 9 states have call successors, (20), 6 states have call predecessors, (20), 8 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 69 [2022-12-14 06:16:23,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:16:23,818 INFO L225 Difference]: With dead ends: 1031 [2022-12-14 06:16:23,818 INFO L226 Difference]: Without dead ends: 600 [2022-12-14 06:16:23,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 184 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3095 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=787, Invalid=7955, Unknown=0, NotChecked=0, Total=8742 [2022-12-14 06:16:23,820 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 397 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:16:23,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 653 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:16:23,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-12-14 06:16:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 498. [2022-12-14 06:16:23,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 333 states have (on average 1.2222222222222223) internal successors, (407), 369 states have internal predecessors, (407), 80 states have call successors, (80), 78 states have call predecessors, (80), 84 states have return successors, (136), 77 states have call predecessors, (136), 80 states have call successors, (136) [2022-12-14 06:16:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 623 transitions. [2022-12-14 06:16:23,865 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 623 transitions. Word has length 69 [2022-12-14 06:16:23,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:16:23,865 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 623 transitions. [2022-12-14 06:16:23,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.722222222222222) internal successors, (85), 19 states have internal predecessors, (85), 9 states have call successors, (20), 6 states have call predecessors, (20), 8 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-12-14 06:16:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 623 transitions. [2022-12-14 06:16:23,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 06:16:23,867 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:16:23,868 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:16:23,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 06:16:24,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:16:24,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:16:24,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:16:24,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1104161650, now seen corresponding path program 1 times [2022-12-14 06:16:24,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:16:24,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987640517] [2022-12-14 06:16:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:16:24,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:16:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:16:24,088 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 06:16:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:16:24,128 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 06:16:24,128 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 06:16:24,129 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 06:16:24,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 06:16:24,134 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:16:24,137 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:16:24,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:16:24 BoogieIcfgContainer [2022-12-14 06:16:24,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:16:24,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:16:24,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:16:24,195 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:16:24,195 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:16:07" (3/4) ... [2022-12-14 06:16:24,196 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 06:16:24,257 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 06:16:24,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:16:24,258 INFO L158 Benchmark]: Toolchain (without parser) took 17355.18ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 136.3MB in the beginning and 188.0MB in the end (delta: -51.7MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. [2022-12-14 06:16:24,258 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 93.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:16:24,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.86ms. Allocated memory is still 174.1MB. Free memory was 135.7MB in the beginning and 117.4MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 06:16:24,259 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.40ms. Allocated memory is still 174.1MB. Free memory was 117.4MB in the beginning and 115.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:16:24,259 INFO L158 Benchmark]: Boogie Preprocessor took 20.69ms. Allocated memory is still 174.1MB. Free memory was 115.3MB in the beginning and 113.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:16:24,259 INFO L158 Benchmark]: RCFGBuilder took 421.67ms. Allocated memory is still 174.1MB. Free memory was 113.5MB in the beginning and 88.9MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-14 06:16:24,260 INFO L158 Benchmark]: TraceAbstraction took 16518.46ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 88.3MB in the beginning and 194.2MB in the end (delta: -105.9MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2022-12-14 06:16:24,260 INFO L158 Benchmark]: Witness Printer took 63.02ms. Allocated memory is still 302.0MB. Free memory was 194.2MB in the beginning and 188.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 06:16:24,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 93.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.86ms. Allocated memory is still 174.1MB. Free memory was 135.7MB in the beginning and 117.4MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.40ms. Allocated memory is still 174.1MB. Free memory was 117.4MB in the beginning and 115.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.69ms. Allocated memory is still 174.1MB. Free memory was 115.3MB in the beginning and 113.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 421.67ms. Allocated memory is still 174.1MB. Free memory was 113.5MB in the beginning and 88.9MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 16518.46ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 88.3MB in the beginning and 194.2MB in the end (delta: -105.9MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Witness Printer took 63.02ms. Allocated memory is still 302.0MB. Free memory was 194.2MB in the beginning and 188.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 54]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L142] int pumpRunning = 0; [L143] int systemActive = 1; [L374] int cleanupTimeShifts = 4; [L472] int methAndRunningLastTime ; [L512] int waterLevel = 1; [L513] int methaneLevelCritical = 0; [L775] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L449] int retValue_acc ; [L450] int tmp ; [L454] FCALL select_helpers() [L455] FCALL select_features() [L456] CALL, EXPR valid_product() [L365] int retValue_acc ; [L368] retValue_acc = 1 [L369] return (retValue_acc); [L456] RET, EXPR valid_product() [L456] tmp = valid_product() [L458] COND TRUE \read(tmp) [L460] FCALL setup() [L461] CALL runTest() [L442] CALL __utac_acc__Specification2_spec__1() [L477] methAndRunningLastTime = 0 [L442] RET __utac_acc__Specification2_spec__1() [L443] CALL test() [L66] int splverifierCounter ; [L67] int tmp ; [L68] int tmp___0 ; [L69] int tmp___1 ; [L70] int tmp___2 ; [L73] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L75] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L77] COND TRUE splverifierCounter < 4 [L83] tmp = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L87] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] COND TRUE waterLevel < 2 [L531] waterLevel = waterLevel + 1 [L87] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp___2) [L107] CALL startSystem() [L331] systemActive = 1 [L107] RET startSystem() [L122] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L150] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L182] COND TRUE ! pumpRunning [L184] CALL, EXPR isHighWaterLevel() [L294] int retValue_acc ; [L295] int tmp ; [L296] int tmp___0 ; [L300] CALL, EXPR isHighWaterSensorDry() [L592] int retValue_acc ; [L595] COND FALSE !(waterLevel < 2) [L599] retValue_acc = 0 [L600] return (retValue_acc); [L300] RET, EXPR isHighWaterSensorDry() [L300] tmp = isHighWaterSensorDry() [L302] COND FALSE !(\read(tmp)) [L305] tmp___0 = 1 [L307] retValue_acc = tmp___0 [L308] return (retValue_acc); [L184] RET, EXPR isHighWaterLevel() [L184] tmp = isHighWaterLevel() [L186] COND TRUE \read(tmp) [L188] CALL activatePump() [L213] int tmp ; [L217] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L242] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L217] RET, EXPR isMethaneAlarm() [L217] tmp = isMethaneAlarm() [L219] COND FALSE !(\read(tmp)) [L223] CALL activatePump__wrappee__highWaterSensor() [L207] pumpRunning = 1 [L223] RET activatePump__wrappee__highWaterSensor() [L188] RET activatePump() [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L487] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L487] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L487] tmp = isMethaneLevelCritical() [L489] COND FALSE !(\read(tmp)) [L505] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L165] RET __utac_acc__Specification2_spec__2() [L122] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=1, waterLevel=2] [L75] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=1, waterLevel=2] [L77] COND TRUE splverifierCounter < 4 [L83] tmp = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=1, waterLevel=2] [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=1, waterLevel=2] [L97] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L542] COND FALSE !(\read(methaneLevelCritical)) [L545] methaneLevelCritical = 1 [L97] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=1, waterLevel=2] [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND FALSE !(\read(tmp___2)) [L111] tmp___1 = __VERIFIER_nondet_int() [L113] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L122] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L150] COND TRUE \read(pumpRunning) [L152] CALL lowerWaterLevel() [L518] COND TRUE waterLevel > 0 [L519] waterLevel = waterLevel - 1 [L152] RET lowerWaterLevel() [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L182] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L197] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L487] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L487] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L487] tmp = isMethaneLevelCritical() [L489] COND TRUE \read(tmp) [L491] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); [L491] RET, EXPR isPumpRunning() [L491] tmp___0 = isPumpRunning() [L493] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L494] COND FALSE !(\read(methAndRunningLastTime)) [L499] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L165] RET __utac_acc__Specification2_spec__2() [L122] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=1] [L75] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=1] [L77] COND TRUE splverifierCounter < 4 [L83] tmp = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=1] [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp___2) [L107] CALL startSystem() [L331] systemActive = 1 [L107] RET startSystem() [L122] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L150] COND TRUE \read(pumpRunning) [L152] CALL lowerWaterLevel() [L518] COND TRUE waterLevel > 0 [L519] waterLevel = waterLevel - 1 [L152] RET lowerWaterLevel() [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L182] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L197] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L487] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L487] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L487] tmp = isMethaneLevelCritical() [L489] COND TRUE \read(tmp) [L491] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); [L491] RET, EXPR isPumpRunning() [L491] tmp___0 = isPumpRunning() [L493] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L494] COND TRUE \read(methAndRunningLastTime) [L496] CALL __automaton_fail() [L54] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.4s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1159 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1143 mSDsluCounter, 1638 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1274 mSDsCounter, 688 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3160 IncrementalHoareTripleChecker+Invalid, 3848 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 688 mSolverCounterUnsat, 364 mSDtfsCounter, 3160 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 537 GetRequests, 328 SyntacticMatches, 6 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5448 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=498occurred in iteration=8, InterpolantAutomatonStates: 121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 303 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 520 ConstructedInterpolants, 0 QuantifiedInterpolants, 1783 SizeOfPredicates, 20 NumberOfNonLiveVariables, 609 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 227/266 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-14 06:16:24,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5762ef5-7ebe-4638-94ae-b4f4cb303220/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE