./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG --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 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:08:30,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:08:30,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:08:30,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:08:30,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:08:30,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:08:30,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:08:30,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:08:30,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:08:30,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:08:30,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:08:30,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:08:30,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:08:30,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:08:30,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:08:30,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:08:30,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:08:30,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:08:30,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:08:30,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:08:30,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:08:30,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:08:30,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:08:30,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:08:30,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:08:30,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:08:30,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:08:30,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:08:30,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:08:30,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:08:30,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:08:30,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:08:30,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:08:30,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:08:30,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:08:30,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:08:30,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:08:30,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:08:30,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:08:30,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:08:30,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:08:30,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:08:30,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:08:30,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:08:30,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:08:30,951 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:08:30,951 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:08:30,951 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:08:30,952 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:08:30,952 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:08:30,952 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:08:30,952 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:08:30,953 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:08:30,953 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:08:30,953 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:08:30,954 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:08:30,954 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:08:30,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:08:30,955 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:08:30,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:08:30,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:08:30,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:08:30,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:08:30,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:08:30,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:08:30,957 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:08:30,957 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:08:30,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:08:30,958 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:08:30,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:08:30,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:08:30,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:08:30,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:30,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:08:30,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:08:30,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:08:30,961 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:08:30,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:08:30,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:08:30,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:08:30,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:08:30,962 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_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2021-10-29 05:08:31,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:08:31,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:08:31,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:08:31,378 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:08:31,379 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:08:31,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-10-29 05:08:31,452 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/data/06f2fffde/4b0e7fbf308c43a1916604a9d26e6329/FLAG43d862ea3 [2021-10-29 05:08:32,075 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:08:32,075 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-10-29 05:08:32,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/data/06f2fffde/4b0e7fbf308c43a1916604a9d26e6329/FLAG43d862ea3 [2021-10-29 05:08:32,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/data/06f2fffde/4b0e7fbf308c43a1916604a9d26e6329 [2021-10-29 05:08:32,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:08:32,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:08:32,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:32,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:08:32,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:08:32,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:32" (1/1) ... [2021-10-29 05:08:32,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43324d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32, skipping insertion in model container [2021-10-29 05:08:32,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:32" (1/1) ... [2021-10-29 05:08:32,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:08:32,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:08:32,681 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_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2021-10-29 05:08:32,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:32,696 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:08:32,717 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_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2021-10-29 05:08:32,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:32,735 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:08:32,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32 WrapperNode [2021-10-29 05:08:32,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:32,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:32,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:08:32,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:08:32,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32" (1/1) ... [2021-10-29 05:08:32,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32" (1/1) ... [2021-10-29 05:08:32,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:32,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:08:32,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:08:32,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:08:32,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32" (1/1) ... [2021-10-29 05:08:32,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32" (1/1) ... [2021-10-29 05:08:32,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32" (1/1) ... [2021-10-29 05:08:32,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32" (1/1) ... [2021-10-29 05:08:32,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32" (1/1) ... [2021-10-29 05:08:32,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32" (1/1) ... [2021-10-29 05:08:32,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32" (1/1) ... [2021-10-29 05:08:32,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:08:32,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:08:32,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:08:32,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:08:32,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32" (1/1) ... [2021-10-29 05:08:32,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:32,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:08:32,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:08:32,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:08:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:08:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:08:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:08:32,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:08:33,365 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:08:33,381 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 05:08:33,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:33 BoogieIcfgContainer [2021-10-29 05:08:33,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:08:33,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:08:33,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:08:33,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:08:33,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:08:32" (1/3) ... [2021-10-29 05:08:33,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d7523f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:33, skipping insertion in model container [2021-10-29 05:08:33,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:32" (2/3) ... [2021-10-29 05:08:33,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d7523f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:33, skipping insertion in model container [2021-10-29 05:08:33,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:33" (3/3) ... [2021-10-29 05:08:33,395 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2021-10-29 05:08:33,401 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:08:33,414 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:08:33,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:08:33,502 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 [2021-10-29 05:08:33,503 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:08:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 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) [2021-10-29 05:08:33,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:08:33,531 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:33,532 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:08:33,533 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:33,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:33,545 INFO L85 PathProgramCache]: Analyzing trace with hash 4062681, now seen corresponding path program 1 times [2021-10-29 05:08:33,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:08:33,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797126391] [2021-10-29 05:08:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:33,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:08:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:33,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:08:33,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797126391] [2021-10-29 05:08:33,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797126391] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:33,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:33,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:08:33,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557258580] [2021-10-29 05:08:33,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:08:33,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:08:33,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:08:33,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:08:33,895 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-10-29 05:08:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:34,001 INFO L93 Difference]: Finished difference Result 44 states and 71 transitions. [2021-10-29 05:08:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:08:34,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-10-29 05:08:34,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:34,016 INFO L225 Difference]: With dead ends: 44 [2021-10-29 05:08:34,017 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:08:34,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:08:34,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:08:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-29 05:08:34,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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) [2021-10-29 05:08:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-10-29 05:08:34,071 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 4 [2021-10-29 05:08:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:34,072 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-10-29 05:08:34,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-10-29 05:08:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-10-29 05:08:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:08:34,074 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:34,074 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-29 05:08:34,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:08:34,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:34,081 INFO L85 PathProgramCache]: Analyzing trace with hash 774639768, now seen corresponding path program 1 times [2021-10-29 05:08:34,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:08:34,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959283846] [2021-10-29 05:08:34,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:34,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:08:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:34,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:08:34,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959283846] [2021-10-29 05:08:34,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959283846] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:08:34,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227785487] [2021-10-29 05:08:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:34,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:08:34,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:08:34,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:08:34,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:08:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:34,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:08:34,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:08:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:34,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:08:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 05:08:34,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227785487] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-29 05:08:34,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:08:34,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 4 [2021-10-29 05:08:34,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586217800] [2021-10-29 05:08:34,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:08:34,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:08:34,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:08:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:08:34,520 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-29 05:08:34,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:34,585 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2021-10-29 05:08:34,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:08:34,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2021-10-29 05:08:34,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:34,588 INFO L225 Difference]: With dead ends: 39 [2021-10-29 05:08:34,588 INFO L226 Difference]: Without dead ends: 37 [2021-10-29 05:08:34,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:08:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-29 05:08:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-10-29 05:08:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 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) [2021-10-29 05:08:34,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2021-10-29 05:08:34,613 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 7 [2021-10-29 05:08:34,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:34,614 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2021-10-29 05:08:34,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-29 05:08:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2021-10-29 05:08:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:08:34,617 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:34,618 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:34,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:34,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-29 05:08:34,837 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1418683263, now seen corresponding path program 1 times [2021-10-29 05:08:34,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:08:34,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073678673] [2021-10-29 05:08:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:34,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:08:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:34,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:08:34,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073678673] [2021-10-29 05:08:34,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073678673] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:08:34,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865767684] [2021-10-29 05:08:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:34,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:08:34,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:08:34,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:08:34,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:08:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:35,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:08:35,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:08:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:35,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:08:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:08:35,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865767684] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-29 05:08:35,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:08:35,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 5 [2021-10-29 05:08:35,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829821050] [2021-10-29 05:08:35,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:08:35,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:08:35,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:08:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:08:35,232 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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) [2021-10-29 05:08:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:35,291 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2021-10-29 05:08:35,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:08:35,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 13 [2021-10-29 05:08:35,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:35,294 INFO L225 Difference]: With dead ends: 49 [2021-10-29 05:08:35,295 INFO L226 Difference]: Without dead ends: 47 [2021-10-29 05:08:35,296 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:08:35,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-29 05:08:35,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-10-29 05:08:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 44 states have internal predecessors, (64), 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) [2021-10-29 05:08:35,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2021-10-29 05:08:35,315 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 13 [2021-10-29 05:08:35,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:35,316 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2021-10-29 05:08:35,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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) [2021-10-29 05:08:35,316 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2021-10-29 05:08:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:08:35,319 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:35,320 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:35,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:35,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:08:35,541 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:35,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:35,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1848229620, now seen corresponding path program 1 times [2021-10-29 05:08:35,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:08:35,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789747735] [2021-10-29 05:08:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:35,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:08:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:08:35,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:08:35,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789747735] [2021-10-29 05:08:35,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789747735] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:35,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:35,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:08:35,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873624030] [2021-10-29 05:08:35,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:08:35,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:08:35,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:08:35,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:08:35,633 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-10-29 05:08:35,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:35,699 INFO L93 Difference]: Finished difference Result 101 states and 145 transitions. [2021-10-29 05:08:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:08:35,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 15 [2021-10-29 05:08:35,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:35,703 INFO L225 Difference]: With dead ends: 101 [2021-10-29 05:08:35,703 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 05:08:35,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:08:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 05:08:35,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2021-10-29 05:08:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 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) [2021-10-29 05:08:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-10-29 05:08:35,720 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 15 [2021-10-29 05:08:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:35,720 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-10-29 05:08:35,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-10-29 05:08:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-10-29 05:08:35,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 05:08:35,722 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:35,722 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:35,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:08:35,722 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:35,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1641012443, now seen corresponding path program 1 times [2021-10-29 05:08:35,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:08:35,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881448019] [2021-10-29 05:08:35,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:35,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:08:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:35,816 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:35,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:08:35,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881448019] [2021-10-29 05:08:35,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881448019] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:08:35,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601735277] [2021-10-29 05:08:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:35,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:08:35,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:08:35,819 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:08:35,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:08:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:35,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:08:35,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:08:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:08:36,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:08:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:08:36,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601735277] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:36,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:08:36,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2021-10-29 05:08:36,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411175965] [2021-10-29 05:08:36,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:08:36,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:08:36,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:08:36,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:08:36,099 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-10-29 05:08:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:36,148 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2021-10-29 05:08:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:08:36,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 21 [2021-10-29 05:08:36,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:36,151 INFO L225 Difference]: With dead ends: 69 [2021-10-29 05:08:36,151 INFO L226 Difference]: Without dead ends: 45 [2021-10-29 05:08:36,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:08:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-29 05:08:36,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-29 05:08:36,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 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) [2021-10-29 05:08:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-10-29 05:08:36,163 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 21 [2021-10-29 05:08:36,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:36,164 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-10-29 05:08:36,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-10-29 05:08:36,164 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-10-29 05:08:36,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-29 05:08:36,171 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:36,172 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:36,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:36,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:08:36,396 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:36,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash -257870307, now seen corresponding path program 1 times [2021-10-29 05:08:36,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:08:36,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079596447] [2021-10-29 05:08:36,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:36,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:08:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 05:08:36,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:08:36,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079596447] [2021-10-29 05:08:36,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079596447] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:08:36,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973334255] [2021-10-29 05:08:36,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:36,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:08:36,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:08:36,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:08:36,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 05:08:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:36,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:08:36,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:08:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:08:36,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:08:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:08:36,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973334255] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:36,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:08:36,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-29 05:08:36,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516458624] [2021-10-29 05:08:36,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:08:36,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:08:36,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:08:36,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:08:36,750 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-29 05:08:36,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:36,764 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2021-10-29 05:08:36,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:08:36,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 27 [2021-10-29 05:08:36,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:36,768 INFO L225 Difference]: With dead ends: 69 [2021-10-29 05:08:36,768 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:08:36,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:08:36,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:08:36,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:08:36,771 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) [2021-10-29 05:08:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:08:36,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-10-29 05:08:36,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:36,772 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:08:36,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-29 05:08:36,772 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:08:36,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:08:36,775 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:08:36,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:36,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:08:36,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:08:37,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:08:37,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:08:37,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:08:37,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:08:37,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:08:37,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:08:37,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:08:37,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:08:37,240 INFO L857 garLoopResultBuilder]: For program point L89-1(lines 65 118) no Hoare annotation was computed. [2021-10-29 05:08:37,241 INFO L860 garLoopResultBuilder]: At program point L151(lines 20 152) the Hoare annotation is: true [2021-10-29 05:08:37,241 INFO L853 garLoopResultBuilder]: At program point L36(lines 36 139) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-29 05:08:37,241 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:08:37,241 INFO L853 garLoopResultBuilder]: At program point L61(lines 61 120) the Hoare annotation is: (or (< ULTIMATE.start_main_~blastFlag~0 5) (and (<= 8640 ULTIMATE.start_main_~s__state~0) (<= ULTIMATE.start_main_~s__state~0 8640))) [2021-10-29 05:08:37,241 INFO L853 garLoopResultBuilder]: At program point L57(lines 57 122) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-29 05:08:37,242 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 150) no Hoare annotation was computed. [2021-10-29 05:08:37,242 INFO L860 garLoopResultBuilder]: At program point L148(lines 20 152) the Hoare annotation is: true [2021-10-29 05:08:37,242 INFO L853 garLoopResultBuilder]: At program point L111(lines 29 146) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-29 05:08:37,242 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 109) no Hoare annotation was computed. [2021-10-29 05:08:37,242 INFO L853 garLoopResultBuilder]: At program point L41(lines 41 136) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-29 05:08:37,243 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:08:37,243 INFO L853 garLoopResultBuilder]: At program point L108(lines 20 152) the Hoare annotation is: false [2021-10-29 05:08:37,243 INFO L857 garLoopResultBuilder]: For program point L104-1(lines 65 118) no Hoare annotation was computed. [2021-10-29 05:08:37,243 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 65 118) no Hoare annotation was computed. [2021-10-29 05:08:37,243 INFO L857 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2021-10-29 05:08:37,247 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-29 05:08:37,248 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:08:37,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:08:37 BoogieIcfgContainer [2021-10-29 05:08:37,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:08:37,268 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:08:37,268 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:08:37,268 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:08:37,268 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:33" (3/4) ... [2021-10-29 05:08:37,272 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:08:37,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-29 05:08:37,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:08:37,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:08:37,284 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:08:37,332 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:08:37,332 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:08:37,334 INFO L168 Benchmark]: Toolchain (without parser) took 4926.11 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 71.4 MB in the beginning and 103.4 MB in the end (delta: -32.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:37,335 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 113.2 MB. Free memory was 87.7 MB in the beginning and 87.6 MB in the end (delta: 62.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:37,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.75 ms. Allocated memory is still 113.2 MB. Free memory was 71.2 MB in the beginning and 87.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:37,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.75 ms. Allocated memory is still 113.2 MB. Free memory was 87.6 MB in the beginning and 85.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:37,336 INFO L168 Benchmark]: Boogie Preprocessor took 26.54 ms. Allocated memory is still 113.2 MB. Free memory was 85.9 MB in the beginning and 84.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:37,337 INFO L168 Benchmark]: RCFGBuilder took 579.30 ms. Allocated memory is still 113.2 MB. Free memory was 84.9 MB in the beginning and 72.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:37,338 INFO L168 Benchmark]: TraceAbstraction took 3880.65 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 71.4 MB in the beginning and 106.5 MB in the end (delta: -35.1 MB). Peak memory consumption was 49.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:37,338 INFO L168 Benchmark]: Witness Printer took 64.97 ms. Allocated memory is still 136.3 MB. Free memory was 106.5 MB in the beginning and 103.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:37,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 113.2 MB. Free memory was 87.7 MB in the beginning and 87.6 MB in the end (delta: 62.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.75 ms. Allocated memory is still 113.2 MB. Free memory was 71.2 MB in the beginning and 87.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.75 ms. Allocated memory is still 113.2 MB. Free memory was 87.6 MB in the beginning and 85.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.54 ms. Allocated memory is still 113.2 MB. Free memory was 85.9 MB in the beginning and 84.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 579.30 ms. Allocated memory is still 113.2 MB. Free memory was 84.9 MB in the beginning and 72.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3880.65 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 71.4 MB in the beginning and 106.5 MB in the end (delta: -35.1 MB). Peak memory consumption was 49.5 MB. Max. memory is 16.1 GB. * Witness Printer took 64.97 ms. Allocated memory is still 136.3 MB. Free memory was 106.5 MB in the beginning and 103.4 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: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 150]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 34 SDslu, 47 SDs, 0 SdLazy, 75 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=3, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 48 NumberOfFragments, 102 HoareAnnotationTreeSize, 8 FomulaSimplifications, 396 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 413 SizeOfPredicates, 0 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 123/139 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: blastFlag < 5 || (8640 <= s__state && s__state <= 8640) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) RESULT: Ultimate proved your program to be correct! [2021-10-29 05:08:37,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc31d77d-7f6f-4ec0-9bf0-3d7689c3cd23/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...