./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW --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 8729c68adf95fe52029d1e2fee3adcb5035ca5756724ed2fc749f4c6dd51b810 --- 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-4e7fbc6 [2022-11-23 15:24:08,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:24:08,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:24:08,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:24:08,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:24:08,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:24:08,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:24:08,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:24:08,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:24:08,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:24:08,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:24:08,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:24:08,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:24:08,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:24:08,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:24:08,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:24:08,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:24:08,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:24:08,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:24:08,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:24:08,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:24:08,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:24:08,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:24:08,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:24:08,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:24:08,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:24:08,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:24:08,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:24:08,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:24:08,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:24:08,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:24:08,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:24:08,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:24:08,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:24:08,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:24:08,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:24:08,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:24:08,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:24:08,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:24:08,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:24:08,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:24:08,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:24:08,959 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:24:08,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:24:08,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:24:08,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:24:08,966 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:24:08,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:24:08,967 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:24:08,967 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:24:08,967 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:24:08,967 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:24:08,968 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:24:08,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:24:08,969 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:24:08,969 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:24:08,969 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:24:08,970 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:24:08,970 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:24:08,970 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:24:08,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:24:08,972 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:24:08,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:24:08,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:24:08,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:24:08,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:24:08,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:24:08,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:24:08,973 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:24:08,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:24:08,974 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:24:08,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:24:08,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:24:08,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:24:08,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:24:08,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:24:08,976 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:24:08,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:24:08,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:24:08,976 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:24:08,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:24:08,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:24:08,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:24:08,978 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_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8729c68adf95fe52029d1e2fee3adcb5035ca5756724ed2fc749f4c6dd51b810 [2022-11-23 15:24:09,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:24:09,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:24:09,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:24:09,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:24:09,306 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:24:09,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/minepump_spec3_product27.cil.c [2022-11-23 15:24:12,428 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:24:12,664 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:24:12,664 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/sv-benchmarks/c/product-lines/minepump_spec3_product27.cil.c [2022-11-23 15:24:12,676 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/data/86cf8d3ea/c53c642753114451a846544c0a56695c/FLAG889a36085 [2022-11-23 15:24:12,697 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/data/86cf8d3ea/c53c642753114451a846544c0a56695c [2022-11-23 15:24:12,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:24:12,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:24:12,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:24:12,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:24:12,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:24:12,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:24:12" (1/1) ... [2022-11-23 15:24:12,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603c3a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:12, skipping insertion in model container [2022-11-23 15:24:12,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:24:12" (1/1) ... [2022-11-23 15:24:12,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:24:12,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:24:12,958 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_e840c376-e191-4ea6-88e0-22a671aaf240/sv-benchmarks/c/product-lines/minepump_spec3_product27.cil.c[5608,5621] [2022-11-23 15:24:13,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:24:13,078 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:24:13,102 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_e840c376-e191-4ea6-88e0-22a671aaf240/sv-benchmarks/c/product-lines/minepump_spec3_product27.cil.c[5608,5621] [2022-11-23 15:24:13,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:24:13,156 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:24:13,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13 WrapperNode [2022-11-23 15:24:13,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:24:13,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:24:13,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:24:13,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:24:13,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13" (1/1) ... [2022-11-23 15:24:13,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13" (1/1) ... [2022-11-23 15:24:13,200 INFO L138 Inliner]: procedures = 54, calls = 98, calls flagged for inlining = 22, calls inlined = 17, statements flattened = 172 [2022-11-23 15:24:13,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:24:13,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:24:13,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:24:13,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:24:13,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13" (1/1) ... [2022-11-23 15:24:13,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13" (1/1) ... [2022-11-23 15:24:13,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13" (1/1) ... [2022-11-23 15:24:13,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13" (1/1) ... [2022-11-23 15:24:13,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13" (1/1) ... [2022-11-23 15:24:13,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13" (1/1) ... [2022-11-23 15:24:13,232 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13" (1/1) ... [2022-11-23 15:24:13,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13" (1/1) ... [2022-11-23 15:24:13,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:24:13,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:24:13,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:24:13,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:24:13,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13" (1/1) ... [2022-11-23 15:24:13,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:24:13,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:24:13,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:24:13,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:24:13,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:24:13,341 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-23 15:24:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-23 15:24:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-23 15:24:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-23 15:24:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 15:24:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 15:24:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 15:24:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 15:24:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-23 15:24:13,343 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-23 15:24:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-23 15:24:13,343 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-23 15:24:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:24:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-23 15:24:13,343 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-23 15:24:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:24:13,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:24:13,420 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:24:13,423 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:24:13,740 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:24:13,891 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:24:13,892 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:24:13,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:24:13 BoogieIcfgContainer [2022-11-23 15:24:13,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:24:13,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:24:13,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:24:13,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:24:13,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:24:12" (1/3) ... [2022-11-23 15:24:13,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d457be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:24:13, skipping insertion in model container [2022-11-23 15:24:13,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:13" (2/3) ... [2022-11-23 15:24:13,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d457be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:24:13, skipping insertion in model container [2022-11-23 15:24:13,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:24:13" (3/3) ... [2022-11-23 15:24:13,905 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product27.cil.c [2022-11-23 15:24:13,925 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:24:13,925 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:24:13,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:24:13,986 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;@479c795c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:24:13,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:24:13,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 44 states have internal predecessors, (54), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 15:24:14,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:24:14,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:14,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:14,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:24:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:14,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1480484045, now seen corresponding path program 1 times [2022-11-23 15:24:14,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:24:14,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283611914] [2022-11-23 15:24:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:14,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:24:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:14,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:24:14,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283611914] [2022-11-23 15:24:14,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283611914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:14,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:24:14,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:24:14,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887033382] [2022-11-23 15:24:14,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:14,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:24:14,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:24:14,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:24:14,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:24:14,407 INFO L87 Difference]: Start difference. First operand has 57 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 44 states have internal predecessors, (54), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:24:14,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:14,514 INFO L93 Difference]: Finished difference Result 112 states and 153 transitions. [2022-11-23 15:24:14,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:24:14,517 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-23 15:24:14,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:14,527 INFO L225 Difference]: With dead ends: 112 [2022-11-23 15:24:14,527 INFO L226 Difference]: Without dead ends: 52 [2022-11-23 15:24:14,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:24:14,536 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:14,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:24:14,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-23 15:24:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-23 15:24:14,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 40 states have internal predecessors, (46), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 15:24:14,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2022-11-23 15:24:14,598 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 17 [2022-11-23 15:24:14,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:14,599 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2022-11-23 15:24:14,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:24:14,599 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2022-11-23 15:24:14,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 15:24:14,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:14,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:14,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:24:14,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:24:14,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:14,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1627365887, now seen corresponding path program 1 times [2022-11-23 15:24:14,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:24:14,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203334454] [2022-11-23 15:24:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:14,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:24:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:14,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:24:14,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203334454] [2022-11-23 15:24:14,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203334454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:14,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:24:14,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:24:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131257338] [2022-11-23 15:24:14,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:14,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:24:14,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:24:14,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:24:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:24:14,703 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:24:14,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:14,742 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2022-11-23 15:24:14,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:24:14,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-23 15:24:14,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:14,744 INFO L225 Difference]: With dead ends: 76 [2022-11-23 15:24:14,744 INFO L226 Difference]: Without dead ends: 44 [2022-11-23 15:24:14,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:24:14,746 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 14 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:14,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 69 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:24:14,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-23 15:24:14,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-23 15:24:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 35 states have internal predecessors, (40), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-23 15:24:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2022-11-23 15:24:14,754 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 18 [2022-11-23 15:24:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:14,755 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2022-11-23 15:24:14,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:24:14,755 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2022-11-23 15:24:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 15:24:14,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:14,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:14,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:24:14,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:24:14,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:14,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2057742617, now seen corresponding path program 1 times [2022-11-23 15:24:14,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:24:14,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002883077] [2022-11-23 15:24:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:14,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:24:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:14,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:24:14,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002883077] [2022-11-23 15:24:14,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002883077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:14,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:24:14,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:24:14,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916518635] [2022-11-23 15:24:14,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:14,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:24:14,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:24:14,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:24:14,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:24:14,866 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:24:14,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:14,928 INFO L93 Difference]: Finished difference Result 128 states and 165 transitions. [2022-11-23 15:24:14,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:24:14,928 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-23 15:24:14,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:14,931 INFO L225 Difference]: With dead ends: 128 [2022-11-23 15:24:14,931 INFO L226 Difference]: Without dead ends: 86 [2022-11-23 15:24:14,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:24:14,933 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 43 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:14,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 99 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:24:14,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-23 15:24:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2022-11-23 15:24:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 65 states have internal predecessors, (75), 16 states have call successors, (16), 12 states have call predecessors, (16), 12 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 15:24:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 107 transitions. [2022-11-23 15:24:14,958 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 107 transitions. Word has length 21 [2022-11-23 15:24:14,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:14,959 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 107 transitions. [2022-11-23 15:24:14,959 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:24:14,959 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 107 transitions. [2022-11-23 15:24:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 15:24:14,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:14,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:14,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:24:14,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:24:14,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:14,965 INFO L85 PathProgramCache]: Analyzing trace with hash 36740712, now seen corresponding path program 1 times [2022-11-23 15:24:14,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:24:14,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787864373] [2022-11-23 15:24:14,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:14,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:24:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:15,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:24:15,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787864373] [2022-11-23 15:24:15,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787864373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:15,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:24:15,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:24:15,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670516527] [2022-11-23 15:24:15,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:15,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:24:15,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:24:15,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:24:15,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:24:15,285 INFO L87 Difference]: Start difference. First operand 83 states and 107 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:24:15,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:15,425 INFO L93 Difference]: Finished difference Result 231 states and 300 transitions. [2022-11-23 15:24:15,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:24:15,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-23 15:24:15,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:15,433 INFO L225 Difference]: With dead ends: 231 [2022-11-23 15:24:15,433 INFO L226 Difference]: Without dead ends: 150 [2022-11-23 15:24:15,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:24:15,437 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 38 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:15,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 175 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:24:15,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-23 15:24:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2022-11-23 15:24:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 96 states have (on average 1.3333333333333333) internal successors, (128), 109 states have internal predecessors, (128), 24 states have call successors, (24), 20 states have call predecessors, (24), 20 states have return successors, (24), 19 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-23 15:24:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 176 transitions. [2022-11-23 15:24:15,463 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 176 transitions. Word has length 24 [2022-11-23 15:24:15,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:15,464 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 176 transitions. [2022-11-23 15:24:15,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:24:15,464 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 176 transitions. [2022-11-23 15:24:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 15:24:15,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:15,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:15,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:24:15,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:24:15,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:15,467 INFO L85 PathProgramCache]: Analyzing trace with hash -573669823, now seen corresponding path program 1 times [2022-11-23 15:24:15,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:24:15,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328566181] [2022-11-23 15:24:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:15,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:24:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:24:15,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:24:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:24:15,524 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:24:15,525 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:24:15,526 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:24:15,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:24:15,532 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-23 15:24:15,536 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:24:15,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:24:15 BoogieIcfgContainer [2022-11-23 15:24:15,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:24:15,570 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:24:15,570 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:24:15,570 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:24:15,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:24:13" (3/4) ... [2022-11-23 15:24:15,572 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 15:24:15,623 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:24:15,623 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:24:15,624 INFO L158 Benchmark]: Toolchain (without parser) took 2918.93ms. Allocated memory was 169.9MB in the beginning and 226.5MB in the end (delta: 56.6MB). Free memory was 128.1MB in the beginning and 111.4MB in the end (delta: 16.7MB). Peak memory consumption was 74.8MB. Max. memory is 16.1GB. [2022-11-23 15:24:15,624 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 169.9MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:24:15,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.67ms. Allocated memory is still 169.9MB. Free memory was 127.6MB in the beginning and 109.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 15:24:15,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.12ms. Allocated memory is still 169.9MB. Free memory was 109.2MB in the beginning and 107.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:24:15,625 INFO L158 Benchmark]: Boogie Preprocessor took 35.45ms. Allocated memory is still 169.9MB. Free memory was 107.1MB in the beginning and 105.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:24:15,625 INFO L158 Benchmark]: RCFGBuilder took 658.05ms. Allocated memory is still 169.9MB. Free memory was 105.5MB in the beginning and 83.5MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-23 15:24:15,626 INFO L158 Benchmark]: TraceAbstraction took 1671.69ms. Allocated memory was 169.9MB in the beginning and 226.5MB in the end (delta: 56.6MB). Free memory was 82.5MB in the beginning and 115.6MB in the end (delta: -33.0MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2022-11-23 15:24:15,626 INFO L158 Benchmark]: Witness Printer took 53.36ms. Allocated memory is still 226.5MB. Free memory was 115.6MB in the beginning and 111.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:24:15,628 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 169.9MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.67ms. Allocated memory is still 169.9MB. Free memory was 127.6MB in the beginning and 109.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.12ms. Allocated memory is still 169.9MB. Free memory was 109.2MB in the beginning and 107.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.45ms. Allocated memory is still 169.9MB. Free memory was 107.1MB in the beginning and 105.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 658.05ms. Allocated memory is still 169.9MB. Free memory was 105.5MB in the beginning and 83.5MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1671.69ms. Allocated memory was 169.9MB in the beginning and 226.5MB in the end (delta: 56.6MB). Free memory was 82.5MB in the beginning and 115.6MB in the end (delta: -33.0MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. * Witness Printer took 53.36ms. Allocated memory is still 226.5MB. Free memory was 115.6MB in the beginning and 111.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 356]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L130] int pumpRunning = 0; [L131] int systemActive = 1; [L568] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L765] int waterLevel = 1; [L766] int methaneLevelCritical = 0; [L854] int cleanupTimeShifts = 4; [L927] int retValue_acc ; [L928] int tmp ; [L932] FCALL select_helpers() [L933] FCALL select_features() [L934] CALL, EXPR valid_product() [L390] int retValue_acc ; [L393] retValue_acc = 1 [L394] return (retValue_acc); [L934] RET, EXPR valid_product() [L934] tmp = valid_product() [L936] COND TRUE \read(tmp) [L938] FCALL setup() [L939] CALL runTest() [L921] CALL test() [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L77] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L783] COND TRUE waterLevel < 2 [L784] waterLevel = waterLevel + 1 [L77] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___2)) [L99] tmp___1 = __VERIFIER_nondet_int() [L101] COND TRUE \read(tmp___1) [L103] CALL stopSystem() [L304] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L311] systemActive = 0 [L103] RET stopSystem() [L110] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L138] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L145] COND FALSE !(\read(systemActive)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L153] CALL __utac_acc__Specification3_spec__1() [L319] int tmp ; [L320] int tmp___0 ; [L321] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L325] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L804] int retValue_acc ; [L807] retValue_acc = methaneLevelCritical [L808] return (retValue_acc); [L325] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L325] tmp = isMethaneLevelCritical() [L327] COND FALSE !(\read(tmp)) [L331] CALL, EXPR getWaterLevel() [L836] int retValue_acc ; [L839] retValue_acc = waterLevel [L840] return (retValue_acc); [L331] RET, EXPR getWaterLevel() [L331] tmp___0 = getWaterLevel() [L333] COND TRUE tmp___0 == 2 [L335] CALL, EXPR isPumpRunning() [L237] int retValue_acc ; [L240] retValue_acc = pumpRunning [L241] return (retValue_acc); [L335] RET, EXPR isPumpRunning() [L335] tmp___1 = isPumpRunning() [L337] COND FALSE !(\read(tmp___1)) [L341] CALL __automaton_fail() [L356] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 400 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 196 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 130 IncrementalHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 204 mSDtfsCounter, 130 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=4, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-23 15:24:15,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e840c376-e191-4ea6-88e0-22a671aaf240/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE