./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e0b8e6efb6fc18f3ca2ba094d3acbfc6a07fbc0100e70485e3a3a84ea56105b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:19:44,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:19:44,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:19:44,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:19:44,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:19:44,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:19:44,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:19:44,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:19:44,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:19:44,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:19:44,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:19:44,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:19:44,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:19:44,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:19:44,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:19:44,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:19:44,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:19:44,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:19:44,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:19:44,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:19:44,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:19:44,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:19:44,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:19:44,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:19:44,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:19:44,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:19:44,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:19:44,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:19:44,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:19:44,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:19:44,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:19:44,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:19:44,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:19:44,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:19:44,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:19:44,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:19:44,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:19:44,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:19:44,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:19:44,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:19:44,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:19:44,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:19:44,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:19:44,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:19:44,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:19:44,999 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:19:44,999 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:19:44,999 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:19:44,999 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:19:45,000 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:19:45,006 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:19:45,007 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:19:45,008 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:19:45,008 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:19:45,009 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:19:45,009 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:19:45,009 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:19:45,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:19:45,010 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:19:45,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:19:45,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:19:45,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:19:45,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:19:45,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:19:45,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:19:45,012 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:19:45,012 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:19:45,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:19:45,013 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:19:45,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:19:45,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:19:45,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:19:45,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:19:45,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:19:45,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:19:45,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:19:45,017 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:19:45,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:19:45,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:19:45,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:19:45,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:19:45,019 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_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0b8e6efb6fc18f3ca2ba094d3acbfc6a07fbc0100e70485e3a3a84ea56105b [2021-10-24 10:19:45,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:19:45,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:19:45,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:19:45,336 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:19:45,337 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:19:45,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-24 10:19:45,433 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/data/0927d4a52/7c80f2b2279b4b1fb62a89f8d0700f04/FLAG5c7f1b321 [2021-10-24 10:19:46,065 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:19:46,066 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-24 10:19:46,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/data/0927d4a52/7c80f2b2279b4b1fb62a89f8d0700f04/FLAG5c7f1b321 [2021-10-24 10:19:46,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/data/0927d4a52/7c80f2b2279b4b1fb62a89f8d0700f04 [2021-10-24 10:19:46,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:19:46,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:19:46,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:19:46,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:19:46,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:19:46,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:19:46" (1/1) ... [2021-10-24 10:19:46,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44c46226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:46, skipping insertion in model container [2021-10-24 10:19:46,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:19:46" (1/1) ... [2021-10-24 10:19:46,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:19:46,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:19:46,678 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_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-24 10:19:46,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:19:46,938 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:19:46,953 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_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-24 10:19:47,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:19:47,066 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:19:47,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:47 WrapperNode [2021-10-24 10:19:47,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:19:47,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:19:47,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:19:47,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:19:47,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:47" (1/1) ... [2021-10-24 10:19:47,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:47" (1/1) ... [2021-10-24 10:19:47,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:19:47,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:19:47,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:19:47,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:19:47,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:47" (1/1) ... [2021-10-24 10:19:47,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:47" (1/1) ... [2021-10-24 10:19:47,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:47" (1/1) ... [2021-10-24 10:19:47,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:47" (1/1) ... [2021-10-24 10:19:47,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:47" (1/1) ... [2021-10-24 10:19:47,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:47" (1/1) ... [2021-10-24 10:19:47,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:47" (1/1) ... [2021-10-24 10:19:47,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:19:47,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:19:47,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:19:47,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:19:47,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:47" (1/1) ... [2021-10-24 10:19:47,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:19:47,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:19:47,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:19:47,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:19:47,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:19:47,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-24 10:19:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:19:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:19:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-24 10:19:47,302 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-24 10:19:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-24 10:19:47,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-24 10:19:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-24 10:19:47,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-24 10:19:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:19:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-24 10:19:47,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:19:47,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:19:47,305 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-24 10:19:47,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:19:47,632 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-24 10:19:47,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:47 BoogieIcfgContainer [2021-10-24 10:19:47,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:19:47,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:19:47,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:19:47,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:19:47,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:19:46" (1/3) ... [2021-10-24 10:19:47,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e03d170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:19:47, skipping insertion in model container [2021-10-24 10:19:47,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:47" (2/3) ... [2021-10-24 10:19:47,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e03d170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:19:47, skipping insertion in model container [2021-10-24 10:19:47,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:47" (3/3) ... [2021-10-24 10:19:47,643 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-24 10:19:47,648 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 10:19:47,648 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:19:47,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:19:47,648 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 10:19:47,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,678 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,678 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,679 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,679 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,681 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,681 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,682 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,682 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,684 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,684 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,684 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,684 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,685 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,685 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,685 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,685 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,689 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,689 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,689 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,689 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,695 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,698 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:19:47,700 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-24 10:19:47,742 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:19:47,748 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:19:47,748 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 10:19:47,763 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 10:19:47,774 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 82 transitions, 179 flow [2021-10-24 10:19:47,777 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 82 transitions, 179 flow [2021-10-24 10:19:47,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-10-24 10:19:47,823 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-10-24 10:19:47,823 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-24 10:19:47,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-24 10:19:47,829 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2021-10-24 10:19:50,808 INFO L131 LiptonReduction]: Checked pairs total: 2312 [2021-10-24 10:19:50,808 INFO L133 LiptonReduction]: Total number of compositions: 71 [2021-10-24 10:19:50,816 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-10-24 10:19:50,844 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 226 states, 225 states have (on average 3.031111111111111) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:50,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 225 states have (on average 3.031111111111111) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:19:50,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:50,855 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:50,855 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:19:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:50,861 INFO L82 PathProgramCache]: Analyzing trace with hash -354306525, now seen corresponding path program 1 times [2021-10-24 10:19:50,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:50,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060024497] [2021-10-24 10:19:50,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:50,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:51,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:51,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:51,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060024497] [2021-10-24 10:19:51,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060024497] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:51,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:51,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:19:51,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827545362] [2021-10-24 10:19:51,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:19:51,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:51,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:19:51,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:19:51,184 INFO L87 Difference]: Start difference. First operand has 226 states, 225 states have (on average 3.031111111111111) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:51,226 INFO L93 Difference]: Finished difference Result 226 states and 634 transitions. [2021-10-24 10:19:51,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:19:51,228 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 10:19:51,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:51,248 INFO L225 Difference]: With dead ends: 226 [2021-10-24 10:19:51,248 INFO L226 Difference]: Without dead ends: 226 [2021-10-24 10:19:51,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:19:51,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-24 10:19:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-10-24 10:19:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.8177777777777777) internal successors, (634), 225 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:51,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2021-10-24 10:19:51,336 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2021-10-24 10:19:51,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:51,337 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2021-10-24 10:19:51,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:51,339 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2021-10-24 10:19:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:19:51,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:51,342 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:51,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:19:51,343 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:19:51,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:51,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1901389344, now seen corresponding path program 1 times [2021-10-24 10:19:51,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:51,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005450687] [2021-10-24 10:19:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:51,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:51,525 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:51,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005450687] [2021-10-24 10:19:51,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005450687] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:51,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:51,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:19:51,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807092612] [2021-10-24 10:19:51,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:19:51,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:51,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:19:51,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:19:51,531 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:51,585 INFO L93 Difference]: Finished difference Result 358 states and 938 transitions. [2021-10-24 10:19:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:19:51,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 10:19:51,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:51,592 INFO L225 Difference]: With dead ends: 358 [2021-10-24 10:19:51,593 INFO L226 Difference]: Without dead ends: 268 [2021-10-24 10:19:51,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:19:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-24 10:19:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 232. [2021-10-24 10:19:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.70995670995671) internal successors, (626), 231 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 626 transitions. [2021-10-24 10:19:51,631 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 626 transitions. Word has length 9 [2021-10-24 10:19:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:51,631 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 626 transitions. [2021-10-24 10:19:51,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:51,632 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 626 transitions. [2021-10-24 10:19:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:19:51,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:51,635 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:51,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:19:51,636 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:19:51,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:51,637 INFO L82 PathProgramCache]: Analyzing trace with hash 23029936, now seen corresponding path program 1 times [2021-10-24 10:19:51,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:51,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801365995] [2021-10-24 10:19:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:51,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:51,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:51,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801365995] [2021-10-24 10:19:51,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801365995] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:51,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:51,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:19:51,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336950577] [2021-10-24 10:19:51,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:19:51,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:51,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:19:51,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:19:51,813 INFO L87 Difference]: Start difference. First operand 232 states and 626 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:51,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:51,866 INFO L93 Difference]: Finished difference Result 298 states and 754 transitions. [2021-10-24 10:19:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:19:51,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:19:51,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:51,870 INFO L225 Difference]: With dead ends: 298 [2021-10-24 10:19:51,870 INFO L226 Difference]: Without dead ends: 250 [2021-10-24 10:19:51,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:19:51,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-24 10:19:51,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 214. [2021-10-24 10:19:51,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.6572769953051645) internal successors, (566), 213 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 566 transitions. [2021-10-24 10:19:51,882 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 566 transitions. Word has length 10 [2021-10-24 10:19:51,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:51,883 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 566 transitions. [2021-10-24 10:19:51,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 566 transitions. [2021-10-24 10:19:51,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:19:51,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:51,884 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:51,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:19:51,885 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:19:51,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:51,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1186492359, now seen corresponding path program 1 times [2021-10-24 10:19:51,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:51,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577880205] [2021-10-24 10:19:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:51,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:51,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:51,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577880205] [2021-10-24 10:19:51,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577880205] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:51,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:51,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:19:51,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379299069] [2021-10-24 10:19:51,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:19:51,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:51,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:19:51,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:19:51,939 INFO L87 Difference]: Start difference. First operand 214 states and 566 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:51,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:51,958 INFO L93 Difference]: Finished difference Result 232 states and 590 transitions. [2021-10-24 10:19:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:19:51,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:19:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:51,960 INFO L225 Difference]: With dead ends: 232 [2021-10-24 10:19:51,961 INFO L226 Difference]: Without dead ends: 196 [2021-10-24 10:19:51,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:19:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-24 10:19:51,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-10-24 10:19:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.6256410256410256) internal successors, (512), 195 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:51,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 512 transitions. [2021-10-24 10:19:51,970 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 512 transitions. Word has length 10 [2021-10-24 10:19:51,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:51,970 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 512 transitions. [2021-10-24 10:19:51,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:51,971 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 512 transitions. [2021-10-24 10:19:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:19:51,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:51,972 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:51,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:19:51,973 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:19:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:51,973 INFO L82 PathProgramCache]: Analyzing trace with hash 713908137, now seen corresponding path program 1 times [2021-10-24 10:19:51,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:51,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786150948] [2021-10-24 10:19:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:51,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:52,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:52,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786150948] [2021-10-24 10:19:52,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786150948] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:52,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:52,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:19:52,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737950601] [2021-10-24 10:19:52,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:19:52,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:52,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:19:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:19:52,028 INFO L87 Difference]: Start difference. First operand 196 states and 512 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:52,077 INFO L93 Difference]: Finished difference Result 261 states and 661 transitions. [2021-10-24 10:19:52,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:19:52,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 10:19:52,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:52,079 INFO L225 Difference]: With dead ends: 261 [2021-10-24 10:19:52,079 INFO L226 Difference]: Without dead ends: 150 [2021-10-24 10:19:52,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:19:52,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-24 10:19:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-24 10:19:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.4563758389261743) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 366 transitions. [2021-10-24 10:19:52,087 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 366 transitions. Word has length 11 [2021-10-24 10:19:52,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:52,087 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 366 transitions. [2021-10-24 10:19:52,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,088 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 366 transitions. [2021-10-24 10:19:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:19:52,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:52,092 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:52,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 10:19:52,092 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:19:52,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:52,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2037604619, now seen corresponding path program 1 times [2021-10-24 10:19:52,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:52,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259937411] [2021-10-24 10:19:52,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:52,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:52,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:52,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259937411] [2021-10-24 10:19:52,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259937411] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:52,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:52,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:19:52,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724348343] [2021-10-24 10:19:52,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:19:52,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:52,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:19:52,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:19:52,223 INFO L87 Difference]: Start difference. First operand 150 states and 366 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:52,254 INFO L93 Difference]: Finished difference Result 169 states and 374 transitions. [2021-10-24 10:19:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:19:52,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-24 10:19:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:52,256 INFO L225 Difference]: With dead ends: 169 [2021-10-24 10:19:52,256 INFO L226 Difference]: Without dead ends: 129 [2021-10-24 10:19:52,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:19:52,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-24 10:19:52,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-10-24 10:19:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 2.234375) internal successors, (286), 128 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 286 transitions. [2021-10-24 10:19:52,263 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 286 transitions. Word has length 12 [2021-10-24 10:19:52,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:52,263 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 286 transitions. [2021-10-24 10:19:52,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 286 transitions. [2021-10-24 10:19:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:19:52,264 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:52,265 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:52,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 10:19:52,265 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:19:52,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:52,266 INFO L82 PathProgramCache]: Analyzing trace with hash -797178107, now seen corresponding path program 1 times [2021-10-24 10:19:52,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:52,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838459419] [2021-10-24 10:19:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:52,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:52,404 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:52,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838459419] [2021-10-24 10:19:52,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838459419] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:52,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:52,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:19:52,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802346550] [2021-10-24 10:19:52,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:19:52,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:52,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:19:52,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:19:52,408 INFO L87 Difference]: Start difference. First operand 129 states and 286 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:52,450 INFO L93 Difference]: Finished difference Result 122 states and 245 transitions. [2021-10-24 10:19:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:19:52,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-24 10:19:52,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:52,452 INFO L225 Difference]: With dead ends: 122 [2021-10-24 10:19:52,452 INFO L226 Difference]: Without dead ends: 95 [2021-10-24 10:19:52,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:19:52,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-24 10:19:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-10-24 10:19:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.9893617021276595) internal successors, (187), 94 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 187 transitions. [2021-10-24 10:19:52,459 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 187 transitions. Word has length 13 [2021-10-24 10:19:52,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:52,459 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 187 transitions. [2021-10-24 10:19:52,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,460 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 187 transitions. [2021-10-24 10:19:52,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 10:19:52,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:52,461 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:52,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 10:19:52,461 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:19:52,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:52,462 INFO L82 PathProgramCache]: Analyzing trace with hash -55678628, now seen corresponding path program 1 times [2021-10-24 10:19:52,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:52,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813678231] [2021-10-24 10:19:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:52,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:52,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:52,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813678231] [2021-10-24 10:19:52,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813678231] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:52,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:52,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-24 10:19:52,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62959652] [2021-10-24 10:19:52,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:19:52,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:19:52,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:19:52,551 INFO L87 Difference]: Start difference. First operand 95 states and 187 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:52,613 INFO L93 Difference]: Finished difference Result 118 states and 221 transitions. [2021-10-24 10:19:52,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:19:52,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-24 10:19:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:52,615 INFO L225 Difference]: With dead ends: 118 [2021-10-24 10:19:52,615 INFO L226 Difference]: Without dead ends: 70 [2021-10-24 10:19:52,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.9ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:19:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-24 10:19:52,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2021-10-24 10:19:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 67 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2021-10-24 10:19:52,619 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2021-10-24 10:19:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:52,619 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2021-10-24 10:19:52,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,620 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2021-10-24 10:19:52,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 10:19:52,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:52,621 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:19:52,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 10:19:52,621 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:19:52,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:52,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1663669412, now seen corresponding path program 2 times [2021-10-24 10:19:52,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:52,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550373949] [2021-10-24 10:19:52,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:52,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:19:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:52,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:52,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550373949] [2021-10-24 10:19:52,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550373949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:52,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:52,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-24 10:19:52,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992958267] [2021-10-24 10:19:52,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:19:52,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:52,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:19:52,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:19:52,743 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:52,769 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2021-10-24 10:19:52,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:19:52,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-24 10:19:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:52,769 INFO L225 Difference]: With dead ends: 58 [2021-10-24 10:19:52,770 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:19:52,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:19:52,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:19:52,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:19:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:19:52,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-24 10:19:52,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:52,771 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:19:52,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:52,771 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:19:52,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:19:52,774 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:19:52,775 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-24 10:19:52,775 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-24 10:19:52,775 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-24 10:19:52,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 10:19:52,779 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-24 10:19:52,779 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:19:52,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:19:52 BasicIcfg [2021-10-24 10:19:52,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:19:52,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:19:52,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:19:52,782 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:19:52,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:47" (3/4) ... [2021-10-24 10:19:52,786 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:19:52,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-24 10:19:52,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-24 10:19:52,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-24 10:19:52,797 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-24 10:19:52,798 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 10:19:52,798 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:19:52,798 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:19:52,834 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:19:52,834 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:19:52,836 INFO L168 Benchmark]: Toolchain (without parser) took 6509.92 ms. Allocated memory was 92.3 MB in the beginning and 148.9 MB in the end (delta: 56.6 MB). Free memory was 55.7 MB in the beginning and 86.3 MB in the end (delta: -30.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:52,836 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory was 62.0 MB in the beginning and 61.9 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:19:52,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.94 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 55.5 MB in the beginning and 81.7 MB in the end (delta: -26.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:52,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.22 ms. Allocated memory is still 115.3 MB. Free memory was 81.7 MB in the beginning and 79.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:52,838 INFO L168 Benchmark]: Boogie Preprocessor took 53.52 ms. Allocated memory is still 115.3 MB. Free memory was 79.6 MB in the beginning and 77.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:52,838 INFO L168 Benchmark]: RCFGBuilder took 432.51 ms. Allocated memory is still 115.3 MB. Free memory was 77.9 MB in the beginning and 65.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:52,839 INFO L168 Benchmark]: TraceAbstraction took 5145.45 ms. Allocated memory was 115.3 MB in the beginning and 148.9 MB in the end (delta: 33.6 MB). Free memory was 65.3 MB in the beginning and 89.4 MB in the end (delta: -24.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:52,839 INFO L168 Benchmark]: Witness Printer took 52.37 ms. Allocated memory is still 148.9 MB. Free memory was 89.4 MB in the beginning and 86.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:52,841 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory was 62.0 MB in the beginning and 61.9 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 739.94 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 55.5 MB in the beginning and 81.7 MB in the end (delta: -26.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.22 ms. Allocated memory is still 115.3 MB. Free memory was 81.7 MB in the beginning and 79.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.52 ms. Allocated memory is still 115.3 MB. Free memory was 79.6 MB in the beginning and 77.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 432.51 ms. Allocated memory is still 115.3 MB. Free memory was 77.9 MB in the beginning and 65.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5145.45 ms. Allocated memory was 115.3 MB in the beginning and 148.9 MB in the end (delta: 33.6 MB). Free memory was 65.3 MB in the beginning and 89.4 MB in the end (delta: -24.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * Witness Printer took 52.37 ms. Allocated memory is still 148.9 MB. Free memory was 89.4 MB in the beginning and 86.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3031.9ms, 90 PlacesBefore, 31 PlacesAfterwards, 82 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 2312 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1352, positive: 1284, positive conditional: 0, positive unconditional: 1284, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 879, positive: 849, positive conditional: 0, positive unconditional: 849, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 879, positive: 843, positive conditional: 0, positive unconditional: 843, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 109, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 89, negative conditional: 0, negative unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1352, positive: 435, positive conditional: 0, positive unconditional: 435, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 879, unknown conditional: 0, unknown unconditional: 879] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5038.9ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 23.6ms, AutomataDifference: 470.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3095.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 190 SDtfs, 218 SDslu, 305 SDs, 0 SdLazy, 137 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 137.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 173.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=2, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 150.5ms AutomataMinimizationTime, 9 MinimizatonAttempts, 74 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.9ms SsaConstructionTime, 274.4ms SatisfiabilityAnalysisTime, 694.4ms InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-24 10:19:52,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4d9554-83a5-42ef-afae-86d40d3cc2f1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...