./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe010_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe010_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI --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 4b3d9e30c58a8f6799b9b6c32f33065901bf03c9 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:53,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:53,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:53,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:53,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:53,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:53,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:53,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:53,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:53,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:53,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:53,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:53,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:53,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:53,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:53,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:53,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:53,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:53,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:53,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:53,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:53,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:53,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:53,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:53,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:53,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:53,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:53,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:53,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:53,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:53,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:53,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:53,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:53,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:53,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:53,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:53,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:53,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:53,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:53,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:53,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:53,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:53,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:53,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:53,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:53,967 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:53,968 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:53,968 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:53,969 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:53,969 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:53,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:53,970 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:53,970 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:53,971 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:53,971 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:53,972 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:53,972 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:53,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:53,973 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:53,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:53,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:53,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:53,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:53,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:53,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:53,975 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:53,975 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:53,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:53,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:53,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:53,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:53,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:53,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:53,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:53,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:53,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:53,978 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:53,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:53,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:53,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:53,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:53,979 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_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b3d9e30c58a8f6799b9b6c32f33065901bf03c9 [2021-10-11 02:23:54,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:54,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:54,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:54,299 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:54,300 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:54,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe010_tso.oepc.i [2021-10-11 02:23:54,375 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/data/2d17a2642/14049dd8904840ac8b86c3adeae7b02a/FLAG0a794fa9b [2021-10-11 02:23:54,932 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:54,933 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/sv-benchmarks/c/pthread-wmm/safe010_tso.oepc.i [2021-10-11 02:23:54,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/data/2d17a2642/14049dd8904840ac8b86c3adeae7b02a/FLAG0a794fa9b [2021-10-11 02:23:55,220 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/data/2d17a2642/14049dd8904840ac8b86c3adeae7b02a [2021-10-11 02:23:55,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:55,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:55,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:55,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:55,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:55,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:55" (1/1) ... [2021-10-11 02:23:55,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@660fa28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55, skipping insertion in model container [2021-10-11 02:23:55,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:55" (1/1) ... [2021-10-11 02:23:55,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:55,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:55,503 WARN L226 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_94e3f332-9191-4caf-9900-d059930bd95d/sv-benchmarks/c/pthread-wmm/safe010_tso.oepc.i[950,963] [2021-10-11 02:23:55,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:55,680 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:55,693 WARN L226 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_94e3f332-9191-4caf-9900-d059930bd95d/sv-benchmarks/c/pthread-wmm/safe010_tso.oepc.i[950,963] [2021-10-11 02:23:55,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:55,802 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:55,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55 WrapperNode [2021-10-11 02:23:55,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:55,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:55,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:55,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:55,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55" (1/1) ... [2021-10-11 02:23:55,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55" (1/1) ... [2021-10-11 02:23:55,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:55,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:55,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:55,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:55,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55" (1/1) ... [2021-10-11 02:23:55,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55" (1/1) ... [2021-10-11 02:23:55,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55" (1/1) ... [2021-10-11 02:23:55,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55" (1/1) ... [2021-10-11 02:23:55,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55" (1/1) ... [2021-10-11 02:23:55,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55" (1/1) ... [2021-10-11 02:23:55,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55" (1/1) ... [2021-10-11 02:23:55,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:55,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:55,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:55,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:55,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:23:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:23:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:23:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:23:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:23:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:23:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:23:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:23:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:55,963 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:23:56,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:56,338 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:23:56,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:56 BoogieIcfgContainer [2021-10-11 02:23:56,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:56,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:56,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:56,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:56,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:55" (1/3) ... [2021-10-11 02:23:56,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3eaa27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:56, skipping insertion in model container [2021-10-11 02:23:56,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:55" (2/3) ... [2021-10-11 02:23:56,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3eaa27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:56, skipping insertion in model container [2021-10-11 02:23:56,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:56" (3/3) ... [2021-10-11 02:23:56,352 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.oepc.i [2021-10-11 02:23:56,373 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:23:56,373 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:56,377 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:56,378 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:23:56,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,432 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,432 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,438 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,438 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,439 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,439 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,440 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,441 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,441 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,442 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,444 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,446 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,452 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,453 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:56,459 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:23:56,470 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:23:56,505 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:56,505 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:56,505 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:56,505 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:56,505 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:56,506 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:56,506 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:56,506 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:56,520 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:23:56,523 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 60 transitions, 130 flow [2021-10-11 02:23:56,526 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 60 transitions, 130 flow [2021-10-11 02:23:56,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 130 flow [2021-10-11 02:23:56,590 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2021-10-11 02:23:56,590 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:23:56,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-10-11 02:23:56,605 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2021-10-11 02:23:59,343 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-10-11 02:23:59,633 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-10-11 02:23:59,749 INFO L131 LiptonReduction]: Checked pairs total: 1378 [2021-10-11 02:23:59,750 INFO L133 LiptonReduction]: Total number of compositions: 55 [2021-10-11 02:23:59,755 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 16 transitions, 42 flow [2021-10-11 02:23:59,766 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2021-10-11 02:23:59,768 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2021-10-11 02:23:59,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:23:59,773 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:59,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:23:59,774 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:59,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:59,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1925010784, now seen corresponding path program 1 times [2021-10-11 02:23:59,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:59,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030120060] [2021-10-11 02:23:59,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:00,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030120060] [2021-10-11 02:24:00,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:00,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:24:00,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781764235] [2021-10-11 02:24:00,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:00,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:00,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:00,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:00,029 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2021-10-11 02:24:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:00,065 INFO L93 Difference]: Finished difference Result 104 states and 207 transitions. [2021-10-11 02:24:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:00,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:24:00,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:00,076 INFO L225 Difference]: With dead ends: 104 [2021-10-11 02:24:00,076 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 02:24:00,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:00,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 02:24:00,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2021-10-11 02:24:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-10-11 02:24:00,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 109 transitions. [2021-10-11 02:24:00,115 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 109 transitions. Word has length 6 [2021-10-11 02:24:00,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:00,115 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 109 transitions. [2021-10-11 02:24:00,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:00,116 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 109 transitions. [2021-10-11 02:24:00,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:24:00,116 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:00,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:00,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:00,117 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:00,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:00,118 INFO L82 PathProgramCache]: Analyzing trace with hash 454629136, now seen corresponding path program 1 times [2021-10-11 02:24:00,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:00,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612755065] [2021-10-11 02:24:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:00,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612755065] [2021-10-11 02:24:00,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:00,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:24:00,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764115785] [2021-10-11 02:24:00,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:00,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:00,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:00,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:00,233 INFO L87 Difference]: Start difference. First operand 57 states and 109 transitions. Second operand 3 states. [2021-10-11 02:24:00,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:00,241 INFO L93 Difference]: Finished difference Result 54 states and 101 transitions. [2021-10-11 02:24:00,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:00,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 02:24:00,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:00,244 INFO L225 Difference]: With dead ends: 54 [2021-10-11 02:24:00,245 INFO L226 Difference]: Without dead ends: 54 [2021-10-11 02:24:00,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:00,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-11 02:24:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-11 02:24:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-10-11 02:24:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 101 transitions. [2021-10-11 02:24:00,253 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 101 transitions. Word has length 7 [2021-10-11 02:24:00,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:00,253 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 101 transitions. [2021-10-11 02:24:00,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:00,253 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 101 transitions. [2021-10-11 02:24:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:24:00,254 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:00,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:00,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:00,254 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:00,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:00,255 INFO L82 PathProgramCache]: Analyzing trace with hash 454206947, now seen corresponding path program 1 times [2021-10-11 02:24:00,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:00,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882475325] [2021-10-11 02:24:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:00,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882475325] [2021-10-11 02:24:00,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:00,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:00,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355462739] [2021-10-11 02:24:00,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:00,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:00,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:00,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:00,345 INFO L87 Difference]: Start difference. First operand 54 states and 101 transitions. Second operand 5 states. [2021-10-11 02:24:00,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:00,371 INFO L93 Difference]: Finished difference Result 57 states and 102 transitions. [2021-10-11 02:24:00,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:00,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-10-11 02:24:00,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:00,373 INFO L225 Difference]: With dead ends: 57 [2021-10-11 02:24:00,373 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 02:24:00,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 02:24:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2021-10-11 02:24:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:24:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 95 transitions. [2021-10-11 02:24:00,381 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 95 transitions. Word has length 7 [2021-10-11 02:24:00,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:00,382 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 95 transitions. [2021-10-11 02:24:00,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:00,382 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 95 transitions. [2021-10-11 02:24:00,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:24:00,383 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:00,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:00,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:24:00,383 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:00,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:00,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1208600435, now seen corresponding path program 1 times [2021-10-11 02:24:00,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:00,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247586462] [2021-10-11 02:24:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:00,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247586462] [2021-10-11 02:24:00,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:00,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:00,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682302608] [2021-10-11 02:24:00,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:00,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:00,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:00,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:00,436 INFO L87 Difference]: Start difference. First operand 51 states and 95 transitions. Second operand 4 states. [2021-10-11 02:24:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:00,461 INFO L93 Difference]: Finished difference Result 63 states and 109 transitions. [2021-10-11 02:24:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:00,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:24:00,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:00,462 INFO L225 Difference]: With dead ends: 63 [2021-10-11 02:24:00,462 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 02:24:00,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:00,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 02:24:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2021-10-11 02:24:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:24:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 93 transitions. [2021-10-11 02:24:00,469 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 93 transitions. Word has length 8 [2021-10-11 02:24:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:00,470 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 93 transitions. [2021-10-11 02:24:00,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 93 transitions. [2021-10-11 02:24:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:24:00,471 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:00,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:00,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:24:00,472 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:00,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:00,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1195512545, now seen corresponding path program 2 times [2021-10-11 02:24:00,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:00,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738459228] [2021-10-11 02:24:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:00,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:00,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738459228] [2021-10-11 02:24:00,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:00,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:00,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408958503] [2021-10-11 02:24:00,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:00,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:00,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:00,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:00,517 INFO L87 Difference]: Start difference. First operand 51 states and 93 transitions. Second operand 4 states. [2021-10-11 02:24:00,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:00,542 INFO L93 Difference]: Finished difference Result 52 states and 85 transitions. [2021-10-11 02:24:00,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:00,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:24:00,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:00,546 INFO L225 Difference]: With dead ends: 52 [2021-10-11 02:24:00,546 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 02:24:00,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 02:24:00,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-11 02:24:00,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 02:24:00,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 43 transitions. [2021-10-11 02:24:00,551 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 43 transitions. Word has length 8 [2021-10-11 02:24:00,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:00,551 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 43 transitions. [2021-10-11 02:24:00,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:00,552 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 43 transitions. [2021-10-11 02:24:00,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:24:00,552 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:00,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:00,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:24:00,553 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:00,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:00,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1199016759, now seen corresponding path program 1 times [2021-10-11 02:24:00,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:00,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029991435] [2021-10-11 02:24:00,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:00,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029991435] [2021-10-11 02:24:00,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:00,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:00,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094346161] [2021-10-11 02:24:00,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:00,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:00,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:00,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:00,611 INFO L87 Difference]: Start difference. First operand 28 states and 43 transitions. Second operand 4 states. [2021-10-11 02:24:00,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:00,632 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-10-11 02:24:00,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:00,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:24:00,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:00,633 INFO L225 Difference]: With dead ends: 27 [2021-10-11 02:24:00,633 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:24:00,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:00,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:24:00,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 02:24:00,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:24:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2021-10-11 02:24:00,637 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 9 [2021-10-11 02:24:00,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:00,637 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2021-10-11 02:24:00,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:00,638 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2021-10-11 02:24:00,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:24:00,638 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:00,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:00,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:24:00,639 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:00,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:00,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1520437605, now seen corresponding path program 1 times [2021-10-11 02:24:00,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:00,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136782332] [2021-10-11 02:24:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:00,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136782332] [2021-10-11 02:24:00,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:00,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:00,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403737024] [2021-10-11 02:24:00,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:00,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:00,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:00,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:00,701 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand 5 states. [2021-10-11 02:24:00,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:00,716 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2021-10-11 02:24:00,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:00,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:24:00,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:00,716 INFO L225 Difference]: With dead ends: 18 [2021-10-11 02:24:00,717 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:00,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:24:00,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:00,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:00,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:00,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:00,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-11 02:24:00,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:00,719 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:00,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:00,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:00,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:00,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:24:00,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:00 BasicIcfg [2021-10-11 02:24:00,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:00,723 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:00,723 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:00,724 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:00,724 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:56" (3/4) ... [2021-10-11 02:24:00,728 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:00,734 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:24:00,734 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:24:00,739 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 02:24:00,739 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:24:00,739 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:00,740 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:00,775 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e3f332-9191-4caf-9900-d059930bd95d/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:00,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:00,777 INFO L168 Benchmark]: Toolchain (without parser) took 5552.23 ms. Allocated memory was 86.0 MB in the beginning and 161.5 MB in the end (delta: 75.5 MB). Free memory was 45.5 MB in the beginning and 109.8 MB in the end (delta: -64.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:00,778 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 63.5 MB in the beginning and 63.4 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:00,778 INFO L168 Benchmark]: CACSL2BoogieTranslator took 573.71 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 45.3 MB in the beginning and 59.8 MB in the end (delta: -14.5 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:00,779 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.79 ms. Allocated memory is still 109.1 MB. Free memory was 59.8 MB in the beginning and 58.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:00,780 INFO L168 Benchmark]: Boogie Preprocessor took 25.07 ms. Allocated memory is still 109.1 MB. Free memory was 58.2 MB in the beginning and 56.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:00,780 INFO L168 Benchmark]: RCFGBuilder took 466.66 ms. Allocated memory is still 109.1 MB. Free memory was 56.7 MB in the beginning and 37.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:00,781 INFO L168 Benchmark]: TraceAbstraction took 4380.75 ms. Allocated memory was 109.1 MB in the beginning and 161.5 MB in the end (delta: 52.4 MB). Free memory was 36.8 MB in the beginning and 111.9 MB in the end (delta: -75.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:00,781 INFO L168 Benchmark]: Witness Printer took 52.55 ms. Allocated memory is still 161.5 MB. Free memory was 111.9 MB in the beginning and 109.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:00,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 63.5 MB in the beginning and 63.4 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 573.71 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 45.3 MB in the beginning and 59.8 MB in the end (delta: -14.5 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.79 ms. Allocated memory is still 109.1 MB. Free memory was 59.8 MB in the beginning and 58.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.07 ms. Allocated memory is still 109.1 MB. Free memory was 58.2 MB in the beginning and 56.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 466.66 ms. Allocated memory is still 109.1 MB. Free memory was 56.7 MB in the beginning and 37.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4380.75 ms. Allocated memory was 109.1 MB in the beginning and 161.5 MB in the end (delta: 52.4 MB). Free memory was 36.8 MB in the beginning and 111.9 MB in the end (delta: -75.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 52.55 ms. Allocated memory is still 161.5 MB. Free memory was 111.9 MB in the beginning and 109.8 MB in the end (delta: 2.1 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 473 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 65 PlacesBefore, 22 PlacesAfterwards, 60 TransitionsBefore, 16 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1378 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 85 SDtfs, 58 SDslu, 83 SDs, 0 SdLazy, 47 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, 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, 7 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...