./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.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_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw --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 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:44:15,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:44:15,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:44:15,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:44:15,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:44:15,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:44:15,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:44:15,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:44:15,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:44:15,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:44:15,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:44:15,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:44:15,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:44:15,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:44:15,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:44:15,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:44:15,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:44:15,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:44:15,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:44:15,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:44:15,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:44:15,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:44:15,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:44:15,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:44:15,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:44:15,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:44:15,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:44:15,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:44:15,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:44:15,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:44:15,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:44:15,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:44:15,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:44:15,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:44:15,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:44:15,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:44:15,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:44:15,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:44:15,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:44:15,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:44:15,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:44:15,927 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:44:15,983 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:44:15,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:44:15,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:44:15,987 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:44:15,988 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:44:15,988 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:44:15,988 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:44:15,989 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:44:15,997 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:44:15,997 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:44:15,999 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:44:15,999 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:44:16,000 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:44:16,000 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:44:16,000 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:44:16,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:44:16,002 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:44:16,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:44:16,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:44:16,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:44:16,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:44:16,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:44:16,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:44:16,004 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:44:16,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:44:16,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:44:16,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:44:16,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:44:16,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:44:16,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:44:16,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:44:16,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:44:16,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:44:16,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:44:16,008 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:44:16,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:44:16,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:44:16,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:44:16,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:44:16,010 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_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2021-10-20 05:44:16,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:44:16,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:44:16,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:44:16,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:44:16,473 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:44:16,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2021-10-20 05:44:16,575 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/data/e66848e38/2c7c380dd0eb410f982eb2461cfc774d/FLAG62eaa59b9 [2021-10-20 05:44:17,377 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:44:17,377 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2021-10-20 05:44:17,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/data/e66848e38/2c7c380dd0eb410f982eb2461cfc774d/FLAG62eaa59b9 [2021-10-20 05:44:17,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/data/e66848e38/2c7c380dd0eb410f982eb2461cfc774d [2021-10-20 05:44:17,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:44:17,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:44:17,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:44:17,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:44:17,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:44:17,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:44:17" (1/1) ... [2021-10-20 05:44:17,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717bc143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:17, skipping insertion in model container [2021-10-20 05:44:17,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:44:17" (1/1) ... [2021-10-20 05:44:17,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:44:17,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:44:17,964 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-20 05:44:18,218 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_b5bd6736-c1f6-4cea-8266-f4c281575d2f/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2021-10-20 05:44:18,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:44:18,265 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:44:18,309 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-20 05:44:18,339 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_b5bd6736-c1f6-4cea-8266-f4c281575d2f/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2021-10-20 05:44:18,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:44:18,410 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:44:18,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:18 WrapperNode [2021-10-20 05:44:18,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:44:18,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:44:18,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:44:18,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:44:18,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:18" (1/1) ... [2021-10-20 05:44:18,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:18" (1/1) ... [2021-10-20 05:44:18,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:44:18,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:44:18,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:44:18,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:44:18,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:18" (1/1) ... [2021-10-20 05:44:18,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:18" (1/1) ... [2021-10-20 05:44:18,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:18" (1/1) ... [2021-10-20 05:44:18,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:18" (1/1) ... [2021-10-20 05:44:18,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:18" (1/1) ... [2021-10-20 05:44:18,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:18" (1/1) ... [2021-10-20 05:44:18,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:18" (1/1) ... [2021-10-20 05:44:18,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:44:18,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:44:18,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:44:18,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:44:18,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:18" (1/1) ... [2021-10-20 05:44:18,567 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:44:18,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:44:18,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:44:18,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:44:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 05:44:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 05:44:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-20 05:44:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2021-10-20 05:44:18,665 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2021-10-20 05:44:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:44:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:44:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:44:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-20 05:44:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:44:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:44:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2021-10-20 05:44:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2021-10-20 05:44:18,669 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-20 05:44:19,151 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:44:19,152 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-20 05:44:19,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:44:19 BoogieIcfgContainer [2021-10-20 05:44:19,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:44:19,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:44:19,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:44:19,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:44:19,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:44:17" (1/3) ... [2021-10-20 05:44:19,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b105c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:44:19, skipping insertion in model container [2021-10-20 05:44:19,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:44:18" (2/3) ... [2021-10-20 05:44:19,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b105c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:44:19, skipping insertion in model container [2021-10-20 05:44:19,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:44:19" (3/3) ... [2021-10-20 05:44:19,166 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2021-10-20 05:44:19,173 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-20 05:44:19,173 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:44:19,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:44:19,174 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-20 05:44:19,221 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,221 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,222 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,222 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,222 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,222 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,223 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,223 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,223 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,224 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,224 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,224 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,225 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,225 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,226 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,226 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,226 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,227 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,227 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,227 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,228 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,228 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,229 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,229 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,229 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,229 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,230 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,230 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,230 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,231 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,231 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,232 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,232 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,232 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,233 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,233 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,233 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,234 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,234 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,234 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,235 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,235 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,235 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,236 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,236 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,236 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,237 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,237 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,237 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,238 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,238 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,238 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,239 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,239 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,239 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,240 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,240 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,240 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,241 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,241 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,242 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,242 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,242 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,243 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,243 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,243 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,244 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,244 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,245 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,245 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,245 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,246 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,246 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,246 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,246 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,247 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,247 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,247 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,248 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,248 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,249 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,249 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,249 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,250 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,250 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,250 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,251 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,251 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,251 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,252 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,252 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,252 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,252 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,253 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,253 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,253 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,254 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,254 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,255 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,255 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,265 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,266 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,266 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,267 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,267 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,283 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,283 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,283 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,284 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,288 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,288 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,288 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,289 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,289 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,289 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,293 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,293 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,293 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,293 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,294 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,294 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,297 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,297 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,298 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,298 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,298 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,298 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,299 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,299 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,299 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 05:44:19,344 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-20 05:44:19,424 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:44:19,440 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 [2021-10-20 05:44:19,444 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-20 05:44:19,476 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-20 05:44:19,494 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 108 transitions, 248 flow [2021-10-20 05:44:19,505 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 108 transitions, 248 flow [2021-10-20 05:44:19,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 108 transitions, 248 flow [2021-10-20 05:44:19,686 INFO L129 PetriNetUnfolder]: 2/104 cut-off events. [2021-10-20 05:44:19,686 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-20 05:44:19,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 104 events. 2/104 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-10-20 05:44:19,705 INFO L116 LiptonReduction]: Number of co-enabled transitions 2408 [2021-10-20 05:44:24,941 INFO L131 LiptonReduction]: Checked pairs total: 9103 [2021-10-20 05:44:24,942 INFO L133 LiptonReduction]: Total number of compositions: 83 [2021-10-20 05:44:24,952 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 43 transitions, 118 flow [2021-10-20 05:44:25,156 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2920 states, 2915 states have (on average 3.8195540308747855) internal successors, (11134), 2919 states have internal predecessors, (11134), 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) [2021-10-20 05:44:25,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 2920 states, 2915 states have (on average 3.8195540308747855) internal successors, (11134), 2919 states have internal predecessors, (11134), 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) [2021-10-20 05:44:25,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 05:44:25,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:44:25,184 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:44:25,184 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-20 05:44:25,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:44:25,191 INFO L82 PathProgramCache]: Analyzing trace with hash -689390566, now seen corresponding path program 1 times [2021-10-20 05:44:25,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:44:25,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728814319] [2021-10-20 05:44:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:44:25,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:44:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:44:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:44:25,599 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:44:25,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728814319] [2021-10-20 05:44:25,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728814319] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:44:25,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:44:25,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 05:44:25,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366636562] [2021-10-20 05:44:25,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:44:25,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:44:25,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:44:25,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:44:25,667 INFO L87 Difference]: Start difference. First operand has 2920 states, 2915 states have (on average 3.8195540308747855) internal successors, (11134), 2919 states have internal predecessors, (11134), 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 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2021-10-20 05:44:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:44:26,034 INFO L93 Difference]: Finished difference Result 5902 states and 20618 transitions. [2021-10-20 05:44:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 05:44:26,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2021-10-20 05:44:26,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:44:26,246 INFO L225 Difference]: With dead ends: 5902 [2021-10-20 05:44:26,246 INFO L226 Difference]: Without dead ends: 5262 [2021-10-20 05:44:26,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 67.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-20 05:44:26,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5262 states. [2021-10-20 05:44:26,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5262 to 3566. [2021-10-20 05:44:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 3563 states have (on average 3.595846197024979) internal successors, (12812), 3565 states have internal predecessors, (12812), 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) [2021-10-20 05:44:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 12812 transitions. [2021-10-20 05:44:26,645 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 12812 transitions. Word has length 9 [2021-10-20 05:44:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:44:26,646 INFO L470 AbstractCegarLoop]: Abstraction has 3566 states and 12812 transitions. [2021-10-20 05:44:26,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2021-10-20 05:44:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 12812 transitions. [2021-10-20 05:44:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-20 05:44:26,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:44:26,659 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:44:26,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:44:26,660 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-20 05:44:26,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:44:26,662 INFO L82 PathProgramCache]: Analyzing trace with hash 337049574, now seen corresponding path program 1 times [2021-10-20 05:44:26,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:44:26,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869933743] [2021-10-20 05:44:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:44:26,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:44:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:44:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:44:26,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:44:26,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869933743] [2021-10-20 05:44:26,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869933743] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:44:26,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:44:26,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:44:26,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443244160] [2021-10-20 05:44:26,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:44:26,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:44:26,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:44:26,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:44:26,831 INFO L87 Difference]: Start difference. First operand 3566 states and 12812 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-20 05:44:26,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:44:26,904 INFO L93 Difference]: Finished difference Result 2868 states and 8845 transitions. [2021-10-20 05:44:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:44:26,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2021-10-20 05:44:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:44:26,946 INFO L225 Difference]: With dead ends: 2868 [2021-10-20 05:44:26,947 INFO L226 Difference]: Without dead ends: 2856 [2021-10-20 05:44:26,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:44:26,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2021-10-20 05:44:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2856. [2021-10-20 05:44:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 2853 states have (on average 3.0890290921836665) internal successors, (8813), 2855 states have internal predecessors, (8813), 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) [2021-10-20 05:44:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 8813 transitions. [2021-10-20 05:44:27,194 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 8813 transitions. Word has length 11 [2021-10-20 05:44:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:44:27,195 INFO L470 AbstractCegarLoop]: Abstraction has 2856 states and 8813 transitions. [2021-10-20 05:44:27,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-20 05:44:27,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 8813 transitions. [2021-10-20 05:44:27,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-20 05:44:27,198 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:44:27,199 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:44:27,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:44:27,199 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-20 05:44:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:44:27,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1079400398, now seen corresponding path program 2 times [2021-10-20 05:44:27,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:44:27,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820486079] [2021-10-20 05:44:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:44:27,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:44:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:44:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:44:27,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:44:27,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820486079] [2021-10-20 05:44:27,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820486079] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:44:27,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:44:27,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:44:27,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111043519] [2021-10-20 05:44:27,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:44:27,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:44:27,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:44:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:44:27,353 INFO L87 Difference]: Start difference. First operand 2856 states and 8813 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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) [2021-10-20 05:44:27,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:44:27,470 INFO L93 Difference]: Finished difference Result 3320 states and 9737 transitions. [2021-10-20 05:44:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:44:27,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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 [2021-10-20 05:44:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:44:27,510 INFO L225 Difference]: With dead ends: 3320 [2021-10-20 05:44:27,510 INFO L226 Difference]: Without dead ends: 3282 [2021-10-20 05:44:27,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:44:27,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2021-10-20 05:44:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 2666. [2021-10-20 05:44:27,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 2659 states have (on average 3.1007897705904477) internal successors, (8245), 2665 states have internal predecessors, (8245), 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) [2021-10-20 05:44:27,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 8245 transitions. [2021-10-20 05:44:27,723 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 8245 transitions. Word has length 11 [2021-10-20 05:44:27,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:44:27,724 INFO L470 AbstractCegarLoop]: Abstraction has 2666 states and 8245 transitions. [2021-10-20 05:44:27,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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) [2021-10-20 05:44:27,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 8245 transitions. [2021-10-20 05:44:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-20 05:44:27,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:44:27,726 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:44:27,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-20 05:44:27,728 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-20 05:44:27,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:44:27,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1507497028, now seen corresponding path program 1 times [2021-10-20 05:44:27,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:44:27,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985949334] [2021-10-20 05:44:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:44:27,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:44:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:44:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:44:27,869 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:44:27,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985949334] [2021-10-20 05:44:27,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985949334] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:44:27,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:44:27,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 05:44:27,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799082923] [2021-10-20 05:44:27,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:44:27,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:44:27,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:44:27,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:44:27,879 INFO L87 Difference]: Start difference. First operand 2666 states and 8245 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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) [2021-10-20 05:44:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:44:28,093 INFO L93 Difference]: Finished difference Result 5142 states and 15428 transitions. [2021-10-20 05:44:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 05:44:28,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 [2021-10-20 05:44:28,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:44:28,150 INFO L225 Difference]: With dead ends: 5142 [2021-10-20 05:44:28,150 INFO L226 Difference]: Without dead ends: 4808 [2021-10-20 05:44:28,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-20 05:44:28,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2021-10-20 05:44:28,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 3190. [2021-10-20 05:44:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 3183 states have (on average 3.1420043983663213) internal successors, (10001), 3189 states have internal predecessors, (10001), 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) [2021-10-20 05:44:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 10001 transitions. [2021-10-20 05:44:28,393 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 10001 transitions. Word has length 13 [2021-10-20 05:44:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:44:28,395 INFO L470 AbstractCegarLoop]: Abstraction has 3190 states and 10001 transitions. [2021-10-20 05:44:28,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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) [2021-10-20 05:44:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 10001 transitions. [2021-10-20 05:44:28,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 05:44:28,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:44:28,399 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:44:28,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-20 05:44:28,399 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-20 05:44:28,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:44:28,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1752731329, now seen corresponding path program 1 times [2021-10-20 05:44:28,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:44:28,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067837207] [2021-10-20 05:44:28,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:44:28,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:44:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:44:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:44:28,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:44:28,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067837207] [2021-10-20 05:44:28,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067837207] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:44:28,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:44:28,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 05:44:28,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606060148] [2021-10-20 05:44:28,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:44:28,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:44:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:44:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:44:28,474 INFO L87 Difference]: Start difference. First operand 3190 states and 10001 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:44:28,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:44:28,540 INFO L93 Difference]: Finished difference Result 1352 states and 3043 transitions. [2021-10-20 05:44:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:44:28,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-20 05:44:28,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:44:28,547 INFO L225 Difference]: With dead ends: 1352 [2021-10-20 05:44:28,547 INFO L226 Difference]: Without dead ends: 1160 [2021-10-20 05:44:28,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:44:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-10-20 05:44:28,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1068. [2021-10-20 05:44:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1060 states have (on average 2.220754716981132) internal successors, (2354), 1067 states have internal predecessors, (2354), 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) [2021-10-20 05:44:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 2354 transitions. [2021-10-20 05:44:28,593 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 2354 transitions. Word has length 16 [2021-10-20 05:44:28,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:44:28,594 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 2354 transitions. [2021-10-20 05:44:28,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:44:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 2354 transitions. [2021-10-20 05:44:28,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 05:44:28,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:44:28,596 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:44:28,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-20 05:44:28,597 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-20 05:44:28,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:44:28,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1302589118, now seen corresponding path program 1 times [2021-10-20 05:44:28,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:44:28,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604011688] [2021-10-20 05:44:28,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:44:28,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:44:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:44:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:44:28,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:44:28,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604011688] [2021-10-20 05:44:28,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604011688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:44:28,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:44:28,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 05:44:28,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831477466] [2021-10-20 05:44:28,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:44:28,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:44:28,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:44:28,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:44:28,710 INFO L87 Difference]: Start difference. First operand 1068 states and 2354 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:44:28,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:44:28,819 INFO L93 Difference]: Finished difference Result 1104 states and 2402 transitions. [2021-10-20 05:44:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 05:44:28,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-20 05:44:28,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:44:28,824 INFO L225 Difference]: With dead ends: 1104 [2021-10-20 05:44:28,825 INFO L226 Difference]: Without dead ends: 978 [2021-10-20 05:44:28,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:44:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-10-20 05:44:28,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 906. [2021-10-20 05:44:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 901 states have (on average 2.2019977802441733) internal successors, (1984), 905 states have internal predecessors, (1984), 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) [2021-10-20 05:44:28,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1984 transitions. [2021-10-20 05:44:28,864 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1984 transitions. Word has length 16 [2021-10-20 05:44:28,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:44:28,865 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1984 transitions. [2021-10-20 05:44:28,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:44:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1984 transitions. [2021-10-20 05:44:28,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 05:44:28,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:44:28,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:44:28,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-20 05:44:28,869 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-20 05:44:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:44:28,869 INFO L82 PathProgramCache]: Analyzing trace with hash 215925257, now seen corresponding path program 1 times [2021-10-20 05:44:28,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:44:28,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33327392] [2021-10-20 05:44:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:44:28,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:44:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:44:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:44:29,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:44:29,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33327392] [2021-10-20 05:44:29,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33327392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:44:29,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:44:29,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 05:44:29,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970311365] [2021-10-20 05:44:29,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:44:29,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:44:29,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:44:29,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:44:29,003 INFO L87 Difference]: Start difference. First operand 906 states and 1984 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:44:29,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:44:29,111 INFO L93 Difference]: Finished difference Result 940 states and 2045 transitions. [2021-10-20 05:44:29,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 05:44:29,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-20 05:44:29,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:44:29,115 INFO L225 Difference]: With dead ends: 940 [2021-10-20 05:44:29,115 INFO L226 Difference]: Without dead ends: 710 [2021-10-20 05:44:29,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:44:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-10-20 05:44:29,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 646. [2021-10-20 05:44:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 644 states have (on average 2.1630434782608696) internal successors, (1393), 645 states have internal predecessors, (1393), 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) [2021-10-20 05:44:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1393 transitions. [2021-10-20 05:44:29,144 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1393 transitions. Word has length 16 [2021-10-20 05:44:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:44:29,144 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 1393 transitions. [2021-10-20 05:44:29,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:44:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1393 transitions. [2021-10-20 05:44:29,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-20 05:44:29,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:44:29,147 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:44:29,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-20 05:44:29,148 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-10-20 05:44:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:44:29,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1656185241, now seen corresponding path program 1 times [2021-10-20 05:44:29,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:44:29,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525380168] [2021-10-20 05:44:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:44:29,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:44:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:44:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:44:29,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:44:29,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525380168] [2021-10-20 05:44:29,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525380168] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:44:29,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:44:29,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 05:44:29,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608903353] [2021-10-20 05:44:29,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:44:29,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:44:29,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:44:29,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:44:29,217 INFO L87 Difference]: Start difference. First operand 646 states and 1393 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-20 05:44:29,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:44:29,249 INFO L93 Difference]: Finished difference Result 278 states and 475 transitions. [2021-10-20 05:44:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:44:29,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-20 05:44:29,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:44:29,251 INFO L225 Difference]: With dead ends: 278 [2021-10-20 05:44:29,251 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 05:44:29,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:44:29,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 05:44:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 05:44:29,252 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) [2021-10-20 05:44:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 05:44:29,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-20 05:44:29,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:44:29,253 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 05:44:29,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-20 05:44:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 05:44:29,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 05:44:29,256 INFO L764 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:44:29,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-20 05:44:29,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-20 05:44:29,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-20 05:44:29,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-20 05:44:29,258 INFO L764 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:44:29,258 INFO L764 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:44:29,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-20 05:44:29,270 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-20 05:44:29,270 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:44:29,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:44:29 BasicIcfg [2021-10-20 05:44:29,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:44:29,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:44:29,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:44:29,273 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:44:29,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:44:19" (3/4) ... [2021-10-20 05:44:29,276 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 05:44:29,283 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2021-10-20 05:44:29,284 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2021-10-20 05:44:29,289 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-10-20 05:44:29,290 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-20 05:44:29,290 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:44:29,290 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:44:29,350 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:44:29,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:44:29,353 INFO L168 Benchmark]: Toolchain (without parser) took 11753.88 ms. Allocated memory was 125.8 MB in the beginning and 232.8 MB in the end (delta: 107.0 MB). Free memory was 85.9 MB in the beginning and 102.5 MB in the end (delta: -16.6 MB). Peak memory consumption was 89.9 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:29,353 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 125.8 MB. Free memory was 103.4 MB in the beginning and 103.3 MB in the end (delta: 55.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:44:29,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.27 ms. Allocated memory is still 125.8 MB. Free memory was 85.6 MB in the beginning and 90.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:29,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.17 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 88.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:29,355 INFO L168 Benchmark]: Boogie Preprocessor took 36.59 ms. Allocated memory is still 125.8 MB. Free memory was 88.3 MB in the beginning and 86.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:44:29,356 INFO L168 Benchmark]: RCFGBuilder took 613.52 ms. Allocated memory is still 125.8 MB. Free memory was 86.9 MB in the beginning and 71.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:29,356 INFO L168 Benchmark]: TraceAbstraction took 10114.65 ms. Allocated memory was 125.8 MB in the beginning and 232.8 MB in the end (delta: 107.0 MB). Free memory was 71.1 MB in the beginning and 104.6 MB in the end (delta: -33.4 MB). Peak memory consumption was 75.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:29,357 INFO L168 Benchmark]: Witness Printer took 77.80 ms. Allocated memory is still 232.8 MB. Free memory was 104.6 MB in the beginning and 102.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:29,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 125.8 MB. Free memory was 103.4 MB in the beginning and 103.3 MB in the end (delta: 55.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 812.27 ms. Allocated memory is still 125.8 MB. Free memory was 85.6 MB in the beginning and 90.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.17 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 88.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.59 ms. Allocated memory is still 125.8 MB. Free memory was 88.3 MB in the beginning and 86.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 613.52 ms. Allocated memory is still 125.8 MB. Free memory was 86.9 MB in the beginning and 71.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10114.65 ms. Allocated memory was 125.8 MB in the beginning and 232.8 MB in the end (delta: 107.0 MB). Free memory was 71.1 MB in the beginning and 104.6 MB in the end (delta: -33.4 MB). Peak memory consumption was 75.3 MB. Max. memory is 16.1 GB. * Witness Printer took 77.80 ms. Allocated memory is still 232.8 MB. Free memory was 104.6 MB in the beginning and 102.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5436.6ms, 119 PlacesBefore, 54 PlacesAfterwards, 108 TransitionsBefore, 43 TransitionsAfterwards, 2408 CoEnabledTransitionPairs, 7 FixpointIterations, 30 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 83 TotalNumberOfCompositions, 9103 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5414, positive: 5162, positive conditional: 0, positive unconditional: 5162, negative: 252, negative conditional: 0, negative unconditional: 252, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1965, positive: 1919, positive conditional: 0, positive unconditional: 1919, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1965, positive: 1859, positive conditional: 0, positive unconditional: 1859, negative: 106, negative conditional: 0, negative unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 106, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 236, positive: 115, positive conditional: 0, positive unconditional: 115, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5414, positive: 3243, positive conditional: 0, positive unconditional: 3243, negative: 206, negative conditional: 0, negative unconditional: 206, unknown: 1965, unknown conditional: 0, unknown unconditional: 1965] , Statistics on independence cache: Total cache size (in pairs): 372, Positive cache size: 343, Positive conditional cache size: 0, Positive unconditional cache size: 343, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29 - 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: 739]: 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, 132 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 9842.9ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 51.5ms, AutomataDifference: 1525.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5706.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 462 SDtfs, 544 SDslu, 635 SDs, 0 SdLazy, 359 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 412.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 271.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3566occurred in iteration=1, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1191.1ms AutomataMinimizationTime, 8 MinimizatonAttempts, 4158 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.7ms SsaConstructionTime, 276.2ms SatisfiabilityAnalysisTime, 727.5ms InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 307 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2021-10-20 05:44:29,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5bd6736-c1f6-4cea-8266-f4c281575d2f/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...