./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE --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 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:47:11,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:47:11,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:47:11,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:47:11,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:47:11,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:47:11,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:47:11,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:47:11,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:47:11,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:47:11,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:47:11,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:47:11,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:47:11,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:47:11,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:47:11,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:47:11,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:47:11,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:47:11,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:47:11,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:47:11,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:47:11,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:47:11,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:47:11,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:47:11,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:47:11,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:47:11,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:47:11,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:47:11,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:47:11,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:47:11,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:47:11,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:47:11,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:47:11,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:47:11,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:47:11,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:47:11,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:47:11,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:47:11,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:47:11,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:47:11,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:47:11,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:47:11,961 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:47:11,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:47:11,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:47:11,964 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:47:11,964 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:47:11,964 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:47:11,965 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:47:11,965 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:47:11,971 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:47:11,972 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:47:11,973 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:47:11,973 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:47:11,973 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:47:11,974 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:47:11,974 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:47:11,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:47:11,975 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:47:11,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:47:11,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:47:11,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:47:11,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:47:11,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:47:11,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:47:11,976 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:47:11,977 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:47:11,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:47:11,977 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:47:11,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:47:11,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:47:11,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:47:11,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:47:11,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:47:11,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:47:11,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:47:11,979 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:47:11,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:47:11,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:47:11,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:47:11,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:47:11,981 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 [2021-10-24 09:47:12,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:47:12,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:47:12,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:47:12,280 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:47:12,281 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:47:12,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/pthread-wmm/safe004_tso.i [2021-10-24 09:47:12,390 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/data/91f8b942b/262eed6a395e438188170fd2481d048f/FLAG5eb56dfc2 [2021-10-24 09:47:12,966 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:47:12,966 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/sv-benchmarks/c/pthread-wmm/safe004_tso.i [2021-10-24 09:47:12,991 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/data/91f8b942b/262eed6a395e438188170fd2481d048f/FLAG5eb56dfc2 [2021-10-24 09:47:13,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/data/91f8b942b/262eed6a395e438188170fd2481d048f [2021-10-24 09:47:13,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:47:13,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:47:13,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:47:13,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:47:13,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:47:13,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:47:13" (1/1) ... [2021-10-24 09:47:13,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e449da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13, skipping insertion in model container [2021-10-24 09:47:13,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:47:13" (1/1) ... [2021-10-24 09:47:13,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:47:13,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:47:13,522 WARN L228 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_74521cb8-fb6f-4d19-a535-8e1c989b42c2/sv-benchmarks/c/pthread-wmm/safe004_tso.i[945,958] [2021-10-24 09:47:13,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:47:13,721 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:47:13,738 WARN L228 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_74521cb8-fb6f-4d19-a535-8e1c989b42c2/sv-benchmarks/c/pthread-wmm/safe004_tso.i[945,958] [2021-10-24 09:47:13,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:47:13,861 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:47:13,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13 WrapperNode [2021-10-24 09:47:13,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:47:13,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:47:13,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:47:13,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:47:13,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13" (1/1) ... [2021-10-24 09:47:13,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13" (1/1) ... [2021-10-24 09:47:13,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:47:13,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:47:13,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:47:13,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:47:13,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13" (1/1) ... [2021-10-24 09:47:13,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13" (1/1) ... [2021-10-24 09:47:13,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13" (1/1) ... [2021-10-24 09:47:13,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13" (1/1) ... [2021-10-24 09:47:13,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13" (1/1) ... [2021-10-24 09:47:13,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13" (1/1) ... [2021-10-24 09:47:13,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13" (1/1) ... [2021-10-24 09:47:13,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:47:13,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:47:13,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:47:13,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:47:13,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13" (1/1) ... [2021-10-24 09:47:14,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:47:14,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:47:14,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:47:14,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:47:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 09:47:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-24 09:47:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:47:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:47:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-24 09:47:14,065 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-24 09:47:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-24 09:47:14,065 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-24 09:47:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-24 09:47:14,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-24 09:47:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:47:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-24 09:47:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:47:14,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:47:14,068 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-24 09:47:14,441 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:47:14,442 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-24 09:47:14,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:14 BoogieIcfgContainer [2021-10-24 09:47:14,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:47:14,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:47:14,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:47:14,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:47:14,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:47:13" (1/3) ... [2021-10-24 09:47:14,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f500d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:47:14, skipping insertion in model container [2021-10-24 09:47:14,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:13" (2/3) ... [2021-10-24 09:47:14,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f500d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:47:14, skipping insertion in model container [2021-10-24 09:47:14,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:14" (3/3) ... [2021-10-24 09:47:14,452 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2021-10-24 09:47:14,457 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 09:47:14,457 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:47:14,458 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:47:14,458 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 09:47:14,489 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,489 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,489 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,489 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,490 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,490 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,490 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,490 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,492 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,492 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,492 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,492 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,493 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,493 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,493 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,493 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,495 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,495 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,495 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,495 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,495 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,495 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,496 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,496 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,496 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,496 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,497 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,497 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,513 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,514 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,514 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,514 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,521 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,521 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,521 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,521 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:47:14,524 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-24 09:47:14,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:47:14,587 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:47:14,588 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 09:47:14,604 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 09:47:14,631 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-24 09:47:14,634 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-24 09:47:14,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-10-24 09:47:14,686 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-10-24 09:47:14,687 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-24 09:47:14,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-24 09:47:14,694 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-10-24 09:47:17,564 INFO L131 LiptonReduction]: Checked pairs total: 2586 [2021-10-24 09:47:17,564 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-10-24 09:47:17,576 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-10-24 09:47:17,615 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:17,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:17,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 09:47:17,629 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:47:17,629 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:47:17,630 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:47:17,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:47:17,636 INFO L82 PathProgramCache]: Analyzing trace with hash -907350008, now seen corresponding path program 1 times [2021-10-24 09:47:17,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:47:17,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328817114] [2021-10-24 09:47:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:47:17,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:47:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:47:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:47:17,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:47:17,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328817114] [2021-10-24 09:47:17,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328817114] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:47:17,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:47:17,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:47:17,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046843461] [2021-10-24 09:47:17,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:47:17,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:47:17,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:47:17,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:47:17,906 INFO L87 Difference]: Start difference. First operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:17,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:47:17,959 INFO L93 Difference]: Finished difference Result 298 states and 864 transitions. [2021-10-24 09:47:17,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:47:17,961 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 09:47:17,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:47:17,987 INFO L225 Difference]: With dead ends: 298 [2021-10-24 09:47:17,988 INFO L226 Difference]: Without dead ends: 298 [2021-10-24 09:47:17,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:47:18,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-24 09:47:18,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-24 09:47:18,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-10-24 09:47:18,062 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-10-24 09:47:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:47:18,063 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-10-24 09:47:18,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:18,063 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-10-24 09:47:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 09:47:18,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:47:18,065 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:47:18,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:47:18,066 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:47:18,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:47:18,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1936916700, now seen corresponding path program 1 times [2021-10-24 09:47:18,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:47:18,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575938578] [2021-10-24 09:47:18,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:47:18,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:47:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:47:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:47:18,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:47:18,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575938578] [2021-10-24 09:47:18,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575938578] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:47:18,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:47:18,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:47:18,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857238886] [2021-10-24 09:47:18,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:47:18,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:47:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:47:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:47:18,319 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:47:18,389 INFO L93 Difference]: Finished difference Result 487 states and 1377 transitions. [2021-10-24 09:47:18,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:47:18,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 09:47:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:47:18,400 INFO L225 Difference]: With dead ends: 487 [2021-10-24 09:47:18,400 INFO L226 Difference]: Without dead ends: 312 [2021-10-24 09:47:18,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:47:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-10-24 09:47:18,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 262. [2021-10-24 09:47:18,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 2.574712643678161) internal successors, (672), 261 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 672 transitions. [2021-10-24 09:47:18,446 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 672 transitions. Word has length 9 [2021-10-24 09:47:18,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:47:18,446 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 672 transitions. [2021-10-24 09:47:18,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:18,447 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 672 transitions. [2021-10-24 09:47:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 09:47:18,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:47:18,448 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:47:18,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:47:18,449 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:47:18,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:47:18,450 INFO L82 PathProgramCache]: Analyzing trace with hash -860080890, now seen corresponding path program 1 times [2021-10-24 09:47:18,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:47:18,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342510033] [2021-10-24 09:47:18,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:47:18,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:47:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:47:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:47:18,590 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:47:18,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342510033] [2021-10-24 09:47:18,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342510033] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:47:18,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:47:18,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:47:18,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653320282] [2021-10-24 09:47:18,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:47:18,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:47:18,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:47:18,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:47:18,598 INFO L87 Difference]: Start difference. First operand 262 states and 672 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:18,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:47:18,668 INFO L93 Difference]: Finished difference Result 343 states and 850 transitions. [2021-10-24 09:47:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 09:47:18,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 09:47:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:47:18,672 INFO L225 Difference]: With dead ends: 343 [2021-10-24 09:47:18,672 INFO L226 Difference]: Without dead ends: 248 [2021-10-24 09:47:18,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:47:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-24 09:47:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 212. [2021-10-24 09:47:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.5071090047393363) internal successors, (529), 211 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 529 transitions. [2021-10-24 09:47:18,697 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 529 transitions. Word has length 10 [2021-10-24 09:47:18,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:47:18,697 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 529 transitions. [2021-10-24 09:47:18,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:18,698 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 529 transitions. [2021-10-24 09:47:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:47:18,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:47:18,705 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:47:18,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 09:47:18,705 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:47:18,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:47:18,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1655230867, now seen corresponding path program 1 times [2021-10-24 09:47:18,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:47:18,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475412545] [2021-10-24 09:47:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:47:18,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:47:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:47:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:47:18,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:47:18,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475412545] [2021-10-24 09:47:18,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475412545] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:47:18,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:47:18,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 09:47:18,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744756610] [2021-10-24 09:47:18,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:47:18,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:47:18,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:47:18,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:47:18,855 INFO L87 Difference]: Start difference. First operand 212 states and 529 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:47:18,924 INFO L93 Difference]: Finished difference Result 307 states and 727 transitions. [2021-10-24 09:47:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 09:47:18,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 09:47:18,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:47:18,927 INFO L225 Difference]: With dead ends: 307 [2021-10-24 09:47:18,933 INFO L226 Difference]: Without dead ends: 180 [2021-10-24 09:47:18,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 38.2ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-24 09:47:18,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-24 09:47:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 152. [2021-10-24 09:47:18,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.2582781456953644) internal successors, (341), 151 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 341 transitions. [2021-10-24 09:47:18,942 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 341 transitions. Word has length 11 [2021-10-24 09:47:18,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:47:18,942 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 341 transitions. [2021-10-24 09:47:18,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 341 transitions. [2021-10-24 09:47:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 09:47:18,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:47:18,946 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:47:18,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 09:47:18,946 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:47:18,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:47:18,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1666001007, now seen corresponding path program 1 times [2021-10-24 09:47:18,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:47:18,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571838258] [2021-10-24 09:47:18,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:47:18,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:47:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:47:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:47:19,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:47:19,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571838258] [2021-10-24 09:47:19,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571838258] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:47:19,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:47:19,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:47:19,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602228976] [2021-10-24 09:47:19,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:47:19,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:47:19,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:47:19,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:47:19,077 INFO L87 Difference]: Start difference. First operand 152 states and 341 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:47:19,121 INFO L93 Difference]: Finished difference Result 177 states and 384 transitions. [2021-10-24 09:47:19,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:47:19,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-24 09:47:19,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:47:19,123 INFO L225 Difference]: With dead ends: 177 [2021-10-24 09:47:19,123 INFO L226 Difference]: Without dead ends: 140 [2021-10-24 09:47:19,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:47:19,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-24 09:47:19,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2021-10-24 09:47:19,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.16260162601626) internal successors, (266), 123 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 266 transitions. [2021-10-24 09:47:19,130 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 266 transitions. Word has length 12 [2021-10-24 09:47:19,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:47:19,131 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 266 transitions. [2021-10-24 09:47:19,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,131 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 266 transitions. [2021-10-24 09:47:19,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 09:47:19,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:47:19,132 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:47:19,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 09:47:19,132 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:47:19,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:47:19,133 INFO L82 PathProgramCache]: Analyzing trace with hash -107561769, now seen corresponding path program 1 times [2021-10-24 09:47:19,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:47:19,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879572298] [2021-10-24 09:47:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:47:19,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:47:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:47:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:47:19,241 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:47:19,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879572298] [2021-10-24 09:47:19,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879572298] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:47:19,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:47:19,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-24 09:47:19,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079095972] [2021-10-24 09:47:19,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:47:19,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:47:19,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:47:19,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:47:19,247 INFO L87 Difference]: Start difference. First operand 124 states and 266 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:47:19,325 INFO L93 Difference]: Finished difference Result 130 states and 267 transitions. [2021-10-24 09:47:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 09:47:19,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-24 09:47:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:47:19,326 INFO L225 Difference]: With dead ends: 130 [2021-10-24 09:47:19,326 INFO L226 Difference]: Without dead ends: 64 [2021-10-24 09:47:19,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:47:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-24 09:47:19,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-24 09:47:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.0317460317460316) internal successors, (128), 63 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 128 transitions. [2021-10-24 09:47:19,329 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 128 transitions. Word has length 13 [2021-10-24 09:47:19,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:47:19,330 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 128 transitions. [2021-10-24 09:47:19,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,330 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 128 transitions. [2021-10-24 09:47:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 09:47:19,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:47:19,331 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:47:19,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 09:47:19,331 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:47:19,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:47:19,332 INFO L82 PathProgramCache]: Analyzing trace with hash 810098199, now seen corresponding path program 1 times [2021-10-24 09:47:19,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:47:19,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072913904] [2021-10-24 09:47:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:47:19,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:47:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:47:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:47:19,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:47:19,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072913904] [2021-10-24 09:47:19,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072913904] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:47:19,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:47:19,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:47:19,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453939698] [2021-10-24 09:47:19,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:47:19,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:47:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:47:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:47:19,400 INFO L87 Difference]: Start difference. First operand 64 states and 128 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:47:19,406 INFO L93 Difference]: Finished difference Result 52 states and 91 transitions. [2021-10-24 09:47:19,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:47:19,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-24 09:47:19,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:47:19,407 INFO L225 Difference]: With dead ends: 52 [2021-10-24 09:47:19,407 INFO L226 Difference]: Without dead ends: 52 [2021-10-24 09:47:19,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:47:19,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-24 09:47:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-24 09:47:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2021-10-24 09:47:19,410 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 14 [2021-10-24 09:47:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:47:19,411 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2021-10-24 09:47:19,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2021-10-24 09:47:19,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 09:47:19,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:47:19,412 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:47:19,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 09:47:19,412 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:47:19,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:47:19,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2102468891, now seen corresponding path program 1 times [2021-10-24 09:47:19,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:47:19,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274492560] [2021-10-24 09:47:19,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:47:19,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:47:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:47:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:47:19,482 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:47:19,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274492560] [2021-10-24 09:47:19,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274492560] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:47:19,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:47:19,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:47:19,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724698076] [2021-10-24 09:47:19,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:47:19,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:47:19,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:47:19,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:47:19,485 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:47:19,496 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2021-10-24 09:47:19,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:47:19,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-24 09:47:19,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:47:19,497 INFO L225 Difference]: With dead ends: 34 [2021-10-24 09:47:19,497 INFO L226 Difference]: Without dead ends: 34 [2021-10-24 09:47:19,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:47:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-24 09:47:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-24 09:47:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2021-10-24 09:47:19,499 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 15 [2021-10-24 09:47:19,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:47:19,499 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2021-10-24 09:47:19,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2021-10-24 09:47:19,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 09:47:19,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:47:19,500 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:47:19,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 09:47:19,501 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:47:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:47:19,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1333270741, now seen corresponding path program 1 times [2021-10-24 09:47:19,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:47:19,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930173275] [2021-10-24 09:47:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:47:19,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:47:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:47:19,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:47:19,586 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:47:19,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930173275] [2021-10-24 09:47:19,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930173275] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:47:19,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:47:19,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 09:47:19,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246615837] [2021-10-24 09:47:19,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:47:19,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:47:19,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:47:19,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:47:19,588 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:47:19,598 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2021-10-24 09:47:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:47:19,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-24 09:47:19,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:47:19,599 INFO L225 Difference]: With dead ends: 26 [2021-10-24 09:47:19,599 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:47:19,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:47:19,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:47:19,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:47:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:47:19,601 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-24 09:47:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:47:19,601 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:47:19,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:47:19,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:47:19,604 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:47:19,604 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-24 09:47:19,604 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-24 09:47:19,605 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-24 09:47:19,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 09:47:19,609 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-24 09:47:19,609 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:47:19,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:47:19 BasicIcfg [2021-10-24 09:47:19,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:47:19,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:47:19,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:47:19,612 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:47:19,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:14" (3/4) ... [2021-10-24 09:47:19,616 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:47:19,623 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-24 09:47:19,624 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-24 09:47:19,624 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-24 09:47:19,629 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-24 09:47:19,629 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 09:47:19,629 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:47:19,630 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:47:19,670 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:47:19,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:47:19,671 INFO L168 Benchmark]: Toolchain (without parser) took 6401.87 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 75.7 MB in the beginning and 76.4 MB in the end (delta: -660.6 kB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:47:19,672 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory is still 38.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:47:19,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.79 ms. Allocated memory is still 111.1 MB. Free memory was 75.5 MB in the beginning and 74.9 MB in the end (delta: 554.1 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:47:19,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.23 ms. Allocated memory is still 111.1 MB. Free memory was 74.5 MB in the beginning and 72.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:47:19,673 INFO L168 Benchmark]: Boogie Preprocessor took 52.34 ms. Allocated memory is still 111.1 MB. Free memory was 72.8 MB in the beginning and 71.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:47:19,673 INFO L168 Benchmark]: RCFGBuilder took 461.13 ms. Allocated memory is still 111.1 MB. Free memory was 71.2 MB in the beginning and 59.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:47:19,674 INFO L168 Benchmark]: TraceAbstraction took 5165.80 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 59.0 MB in the beginning and 79.5 MB in the end (delta: -20.6 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-10-24 09:47:19,674 INFO L168 Benchmark]: Witness Printer took 57.95 ms. Allocated memory is still 134.2 MB. Free memory was 79.5 MB in the beginning and 76.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:47:19,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory is still 38.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 591.79 ms. Allocated memory is still 111.1 MB. Free memory was 75.5 MB in the beginning and 74.9 MB in the end (delta: 554.1 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.23 ms. Allocated memory is still 111.1 MB. Free memory was 74.5 MB in the beginning and 72.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.34 ms. Allocated memory is still 111.1 MB. Free memory was 72.8 MB in the beginning and 71.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 461.13 ms. Allocated memory is still 111.1 MB. Free memory was 71.2 MB in the beginning and 59.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5165.80 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 59.0 MB in the beginning and 79.5 MB in the end (delta: -20.6 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Witness Printer took 57.95 ms. Allocated memory is still 134.2 MB. Free memory was 79.5 MB in the beginning and 76.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2930.4ms, 91 PlacesBefore, 32 PlacesAfterwards, 83 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 2586 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1456, positive: 1379, positive conditional: 0, positive unconditional: 1379, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 977, positive: 946, positive conditional: 0, positive unconditional: 946, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 977, positive: 940, positive conditional: 0, positive unconditional: 940, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 87, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1456, positive: 433, positive conditional: 0, positive unconditional: 433, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 977, unknown conditional: 0, unknown unconditional: 977] , Statistics on independence cache: Total cache size (in pairs): 83, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5027.1ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 28.3ms, AutomataDifference: 511.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3027.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 198 SDtfs, 246 SDslu, 250 SDs, 0 SdLazy, 110 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 221.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 149.5ms AutomataMinimizationTime, 9 MinimizatonAttempts, 130 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.2ms SsaConstructionTime, 285.7ms SatisfiabilityAnalysisTime, 713.7ms InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 477 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-24 09:47:19,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74521cb8-fb6f-4d19-a535-8e1c989b42c2/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...