./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/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_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P --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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:50:18,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:50:18,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:50:18,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:50:18,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:50:18,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:50:18,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:50:18,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:50:18,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:50:18,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:50:18,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:50:18,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:50:18,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:50:18,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:50:18,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:50:18,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:50:18,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:50:18,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:50:18,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:50:18,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:50:18,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:50:18,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:50:18,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:50:18,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:50:18,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:50:18,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:50:18,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:50:18,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:50:18,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:50:18,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:50:18,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:50:18,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:50:18,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:50:18,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:50:18,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:50:18,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:50:18,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:50:18,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:50:18,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:50:18,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:50:18,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:50:18,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:50:18,895 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:50:18,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:50:18,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:50:18,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:50:18,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:50:18,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:50:18,897 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:50:18,898 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:50:18,898 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:50:18,898 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:50:18,899 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:50:18,899 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:50:18,899 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:50:18,900 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:50:18,900 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:50:18,900 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:50:18,901 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:50:18,901 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:50:18,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:50:18,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:50:18,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:50:18,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:50:18,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:50:18,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:50:18,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:50:18,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:50:18,904 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:50:18,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:50:18,905 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:50:18,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:50:18,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:50:18,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:50:18,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:50:18,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:50:18,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:50:18,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:50:18,907 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:50:18,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:50:18,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:50:18,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:50:18,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:50:18,908 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_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2021-11-21 00:50:19,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:50:19,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:50:19,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:50:19,355 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:50:19,357 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:50:19,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2021-11-21 00:50:19,452 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/data/7c8096df9/fca2f560c5fe422595ce7484e4635f4b/FLAG9a015f827 [2021-11-21 00:50:20,172 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:50:20,175 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2021-11-21 00:50:20,206 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/data/7c8096df9/fca2f560c5fe422595ce7484e4635f4b/FLAG9a015f827 [2021-11-21 00:50:20,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/data/7c8096df9/fca2f560c5fe422595ce7484e4635f4b [2021-11-21 00:50:20,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:50:20,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:50:20,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:50:20,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:50:20,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:50:20,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:50:20" (1/1) ... [2021-11-21 00:50:20,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4234be77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:20, skipping insertion in model container [2021-11-21 00:50:20,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:50:20" (1/1) ... [2021-11-21 00:50:20,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:50:20,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:50:20,701 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-21 00:50:20,870 WARN L230 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_9664b520-7a4c-4de7-8982-cc9451da48c4/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2021-11-21 00:50:20,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:50:20,891 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:50:20,910 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-21 00:50:20,949 WARN L230 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_9664b520-7a4c-4de7-8982-cc9451da48c4/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2021-11-21 00:50:20,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:50:21,037 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:50:21,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:21 WrapperNode [2021-11-21 00:50:21,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:50:21,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:50:21,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:50:21,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:50:21,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:21" (1/1) ... [2021-11-21 00:50:21,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:21" (1/1) ... [2021-11-21 00:50:21,134 INFO L137 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2021-11-21 00:50:21,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:50:21,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:50:21,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:50:21,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:50:21,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:21" (1/1) ... [2021-11-21 00:50:21,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:21" (1/1) ... [2021-11-21 00:50:21,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:21" (1/1) ... [2021-11-21 00:50:21,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:21" (1/1) ... [2021-11-21 00:50:21,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:21" (1/1) ... [2021-11-21 00:50:21,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:21" (1/1) ... [2021-11-21 00:50:21,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:21" (1/1) ... [2021-11-21 00:50:21,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:50:21,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:50:21,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:50:21,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:50:21,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:21" (1/1) ... [2021-11-21 00:50:21,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:50:21,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:50:21,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:50:21,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:50:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:50:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:50:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-21 00:50:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:50:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2021-11-21 00:50:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2021-11-21 00:50:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:50:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:50:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:50:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-21 00:50:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:50:21,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:50:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2021-11-21 00:50:21,274 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2021-11-21 00:50:21,276 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-21 00:50:21,478 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:50:21,493 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:50:21,797 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:50:21,836 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:50:21,836 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:50:21,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:50:21 BoogieIcfgContainer [2021-11-21 00:50:21,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:50:21,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:50:21,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:50:21,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:50:21,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:50:20" (1/3) ... [2021-11-21 00:50:21,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e1b1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:50:21, skipping insertion in model container [2021-11-21 00:50:21,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:21" (2/3) ... [2021-11-21 00:50:21,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e1b1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:50:21, skipping insertion in model container [2021-11-21 00:50:21,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:50:21" (3/3) ... [2021-11-21 00:50:21,850 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2021-11-21 00:50:21,856 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-21 00:50:21,856 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:50:21,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:50:21,857 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-21 00:50:21,900 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,900 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,900 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,901 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,901 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,901 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,901 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,902 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,902 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,902 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,903 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,903 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,903 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,903 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,904 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,904 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,904 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,905 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,905 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,905 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,905 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,906 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,906 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,906 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,906 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,907 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,907 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,907 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,907 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,907 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,908 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,908 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,908 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,909 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,909 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,909 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,909 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,910 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,910 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,910 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,910 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,911 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,911 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,911 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,911 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,911 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,912 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,912 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,912 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,913 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,913 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,913 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,913 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,914 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,914 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,914 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,914 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,914 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,915 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,915 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,915 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,915 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,916 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,916 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,916 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,916 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,917 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,917 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,917 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,918 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,918 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,918 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,918 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,918 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,919 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,919 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,919 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,919 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,920 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,920 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,920 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,921 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,921 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,921 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,922 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,922 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,922 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,922 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,922 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,923 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,923 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,923 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,923 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,924 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,924 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,924 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,924 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,925 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,925 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,925 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,929 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,929 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,930 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,930 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,930 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,930 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,931 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,931 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,931 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,932 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,933 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,933 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,933 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,933 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,934 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,935 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,935 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,935 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,935 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,935 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,936 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,937 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,937 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,937 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,937 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,938 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,938 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,938 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,938 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,939 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:50:21,943 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-21 00:50:21,998 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:50:22,007 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 [2021-11-21 00:50:22,007 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-21 00:50:22,024 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-21 00:50:22,041 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 112 transitions, 256 flow [2021-11-21 00:50:22,044 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 112 transitions, 256 flow [2021-11-21 00:50:22,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 112 transitions, 256 flow [2021-11-21 00:50:22,152 INFO L129 PetriNetUnfolder]: 2/108 cut-off events. [2021-11-21 00:50:22,153 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-21 00:50:22,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 108 events. 2/108 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. 0/104 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2021-11-21 00:50:22,166 INFO L116 LiptonReduction]: Number of co-enabled transitions 2408 [2021-11-21 00:50:26,557 INFO L131 LiptonReduction]: Checked pairs total: 10546 [2021-11-21 00:50:26,558 INFO L133 LiptonReduction]: Total number of compositions: 87 [2021-11-21 00:50:26,575 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 43 transitions, 118 flow [2021-11-21 00:50:26,749 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2790 states, 2787 states have (on average 3.7868675995694296) internal successors, (10554), 2789 states have internal predecessors, (10554), 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) [2021-11-21 00:50:26,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 2790 states, 2787 states have (on average 3.7868675995694296) internal successors, (10554), 2789 states have internal predecessors, (10554), 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) [2021-11-21 00:50:26,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:50:26,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:26,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:26,776 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-21 00:50:26,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:26,782 INFO L85 PathProgramCache]: Analyzing trace with hash 717948859, now seen corresponding path program 1 times [2021-11-21 00:50:26,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:26,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040382603] [2021-11-21 00:50:26,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:26,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:50:27,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:27,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040382603] [2021-11-21 00:50:27,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040382603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:27,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:27,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:50:27,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694015583] [2021-11-21 00:50:27,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:27,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:50:27,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:27,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:50:27,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:50:27,092 INFO L87 Difference]: Start difference. First operand has 2790 states, 2787 states have (on average 3.7868675995694296) internal successors, (10554), 2789 states have internal predecessors, (10554), 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) [2021-11-21 00:50:27,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:27,635 INFO L93 Difference]: Finished difference Result 5636 states and 19416 transitions. [2021-11-21 00:50:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:50:27,638 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 [2021-11-21 00:50:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:27,768 INFO L225 Difference]: With dead ends: 5636 [2021-11-21 00:50:27,768 INFO L226 Difference]: Without dead ends: 5492 [2021-11-21 00:50:27,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:50:27,774 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 115 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:27,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 21 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:50:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5492 states. [2021-11-21 00:50:28,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5492 to 3566. [2021-11-21 00:50:28,039 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) [2021-11-21 00:50:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 12812 transitions. [2021-11-21 00:50:28,071 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 12812 transitions. Word has length 9 [2021-11-21 00:50:28,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:28,072 INFO L470 AbstractCegarLoop]: Abstraction has 3566 states and 12812 transitions. [2021-11-21 00:50:28,072 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) [2021-11-21 00:50:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 12812 transitions. [2021-11-21 00:50:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:50:28,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:28,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:28,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:50:28,077 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-21 00:50:28,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash 695236594, now seen corresponding path program 1 times [2021-11-21 00:50:28,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:28,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781481266] [2021-11-21 00:50:28,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:28,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:50:28,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:28,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781481266] [2021-11-21 00:50:28,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781481266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:28,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:28,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:50:28,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860551404] [2021-11-21 00:50:28,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:28,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:50:28,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:28,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:50:28,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:50:28,170 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) [2021-11-21 00:50:28,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:28,327 INFO L93 Difference]: Finished difference Result 2868 states and 8845 transitions. [2021-11-21 00:50:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:50:28,328 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 [2021-11-21 00:50:28,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:28,356 INFO L225 Difference]: With dead ends: 2868 [2021-11-21 00:50:28,357 INFO L226 Difference]: Without dead ends: 2856 [2021-11-21 00:50:28,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:50:28,359 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:28,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 20 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:50:28,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2021-11-21 00:50:28,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2856. [2021-11-21 00:50:28,463 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) [2021-11-21 00:50:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 8813 transitions. [2021-11-21 00:50:28,480 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 8813 transitions. Word has length 11 [2021-11-21 00:50:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:28,481 INFO L470 AbstractCegarLoop]: Abstraction has 2856 states and 8813 transitions. [2021-11-21 00:50:28,481 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) [2021-11-21 00:50:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 8813 transitions. [2021-11-21 00:50:28,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:50:28,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:28,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:28,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:50:28,484 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-21 00:50:28,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:28,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1540889804, now seen corresponding path program 2 times [2021-11-21 00:50:28,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:28,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530723650] [2021-11-21 00:50:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:28,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:50:28,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:28,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530723650] [2021-11-21 00:50:28,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530723650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:28,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:28,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:50:28,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69567488] [2021-11-21 00:50:28,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:28,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:50:28,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:28,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:50:28,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:50:28,571 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) [2021-11-21 00:50:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:28,787 INFO L93 Difference]: Finished difference Result 3320 states and 9737 transitions. [2021-11-21 00:50:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:50:28,787 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 [2021-11-21 00:50:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:28,816 INFO L225 Difference]: With dead ends: 3320 [2021-11-21 00:50:28,816 INFO L226 Difference]: Without dead ends: 3282 [2021-11-21 00:50:28,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:50:28,818 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 69 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:28,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 34 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:50:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2021-11-21 00:50:28,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 2666. [2021-11-21 00:50:28,913 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) [2021-11-21 00:50:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 8245 transitions. [2021-11-21 00:50:28,929 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 8245 transitions. Word has length 11 [2021-11-21 00:50:28,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:28,929 INFO L470 AbstractCegarLoop]: Abstraction has 2666 states and 8245 transitions. [2021-11-21 00:50:28,929 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) [2021-11-21 00:50:28,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 8245 transitions. [2021-11-21 00:50:28,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:50:28,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:28,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:28,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:50:28,961 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-21 00:50:28,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash -404044991, now seen corresponding path program 1 times [2021-11-21 00:50:28,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:28,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100886890] [2021-11-21 00:50:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:28,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:50:29,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:29,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100886890] [2021-11-21 00:50:29,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100886890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:29,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:29,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:50:29,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524444066] [2021-11-21 00:50:29,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:29,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:50:29,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:50:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:50:29,044 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) [2021-11-21 00:50:29,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:29,294 INFO L93 Difference]: Finished difference Result 5228 states and 15664 transitions. [2021-11-21 00:50:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:50:29,294 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 [2021-11-21 00:50:29,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:29,338 INFO L225 Difference]: With dead ends: 5228 [2021-11-21 00:50:29,338 INFO L226 Difference]: Without dead ends: 4894 [2021-11-21 00:50:29,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:50:29,340 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 108 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:29,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 20 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:50:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2021-11-21 00:50:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 3190. [2021-11-21 00:50:29,491 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) [2021-11-21 00:50:29,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 10001 transitions. [2021-11-21 00:50:29,565 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 10001 transitions. Word has length 13 [2021-11-21 00:50:29,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:29,566 INFO L470 AbstractCegarLoop]: Abstraction has 3190 states and 10001 transitions. [2021-11-21 00:50:29,567 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) [2021-11-21 00:50:29,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 10001 transitions. [2021-11-21 00:50:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 00:50:29,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:29,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:29,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:50:29,570 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-21 00:50:29,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:29,575 INFO L85 PathProgramCache]: Analyzing trace with hash 549299888, now seen corresponding path program 1 times [2021-11-21 00:50:29,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:29,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930417464] [2021-11-21 00:50:29,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:29,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:50:29,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:29,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930417464] [2021-11-21 00:50:29,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930417464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:29,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:29,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:50:29,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378340506] [2021-11-21 00:50:29,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:29,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:50:29,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:29,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:50:29,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:50:29,650 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) [2021-11-21 00:50:29,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:29,778 INFO L93 Difference]: Finished difference Result 1304 states and 3059 transitions. [2021-11-21 00:50:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:50:29,779 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 [2021-11-21 00:50:29,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:29,795 INFO L225 Difference]: With dead ends: 1304 [2021-11-21 00:50:29,795 INFO L226 Difference]: Without dead ends: 1304 [2021-11-21 00:50:29,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:50:29,796 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 70 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:29,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 46 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:50:29,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-11-21 00:50:29,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1170. [2021-11-21 00:50:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1168 states have (on average 2.3690068493150687) internal successors, (2767), 1169 states have internal predecessors, (2767), 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) [2021-11-21 00:50:29,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2767 transitions. [2021-11-21 00:50:29,835 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2767 transitions. Word has length 16 [2021-11-21 00:50:29,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:29,836 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2767 transitions. [2021-11-21 00:50:29,836 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) [2021-11-21 00:50:29,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2767 transitions. [2021-11-21 00:50:29,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 00:50:29,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:29,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:29,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:50:29,838 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-21 00:50:29,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:29,841 INFO L85 PathProgramCache]: Analyzing trace with hash -936675364, now seen corresponding path program 1 times [2021-11-21 00:50:29,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:29,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40426730] [2021-11-21 00:50:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:29,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:50:29,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:29,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40426730] [2021-11-21 00:50:29,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40426730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:29,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:29,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:50:29,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13735465] [2021-11-21 00:50:29,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:29,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:50:29,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:50:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:50:29,918 INFO L87 Difference]: Start difference. First operand 1170 states and 2767 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) [2021-11-21 00:50:30,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:30,135 INFO L93 Difference]: Finished difference Result 1408 states and 3248 transitions. [2021-11-21 00:50:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:50:30,135 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 [2021-11-21 00:50:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:30,140 INFO L225 Difference]: With dead ends: 1408 [2021-11-21 00:50:30,140 INFO L226 Difference]: Without dead ends: 1362 [2021-11-21 00:50:30,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:50:30,141 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 85 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:30,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 19 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:50:30,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-11-21 00:50:30,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1038. [2021-11-21 00:50:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1036 states have (on average 2.353281853281853) internal successors, (2438), 1037 states have internal predecessors, (2438), 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) [2021-11-21 00:50:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 2438 transitions. [2021-11-21 00:50:30,174 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 2438 transitions. Word has length 16 [2021-11-21 00:50:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:30,174 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 2438 transitions. [2021-11-21 00:50:30,175 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) [2021-11-21 00:50:30,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 2438 transitions. [2021-11-21 00:50:30,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 00:50:30,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:30,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:30,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:50:30,176 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-21 00:50:30,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:30,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1562626001, now seen corresponding path program 1 times [2021-11-21 00:50:30,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:30,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063220819] [2021-11-21 00:50:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:30,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:50:30,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:30,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063220819] [2021-11-21 00:50:30,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063220819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:30,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:30,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:50:30,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913260875] [2021-11-21 00:50:30,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:30,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:50:30,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:30,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:50:30,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:50:30,214 INFO L87 Difference]: Start difference. First operand 1038 states and 2438 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) [2021-11-21 00:50:30,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:30,435 INFO L93 Difference]: Finished difference Result 1254 states and 2889 transitions. [2021-11-21 00:50:30,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:50:30,435 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 [2021-11-21 00:50:30,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:30,439 INFO L225 Difference]: With dead ends: 1254 [2021-11-21 00:50:30,439 INFO L226 Difference]: Without dead ends: 1140 [2021-11-21 00:50:30,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:50:30,440 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 75 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:30,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 19 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:50:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-11-21 00:50:30,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 838. [2021-11-21 00:50:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 2.3456937799043063) internal successors, (1961), 837 states have internal predecessors, (1961), 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) [2021-11-21 00:50:30,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1961 transitions. [2021-11-21 00:50:30,466 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1961 transitions. Word has length 16 [2021-11-21 00:50:30,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:30,466 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1961 transitions. [2021-11-21 00:50:30,466 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) [2021-11-21 00:50:30,467 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1961 transitions. [2021-11-21 00:50:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 00:50:30,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:30,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:30,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:50:30,469 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-21 00:50:30,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:30,469 INFO L85 PathProgramCache]: Analyzing trace with hash -160069789, now seen corresponding path program 1 times [2021-11-21 00:50:30,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:30,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884138303] [2021-11-21 00:50:30,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:30,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:50:30,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:30,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884138303] [2021-11-21 00:50:30,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884138303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:30,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:30,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:50:30,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689268633] [2021-11-21 00:50:30,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:30,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:50:30,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:30,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:50:30,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:50:30,516 INFO L87 Difference]: Start difference. First operand 838 states and 1961 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) [2021-11-21 00:50:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:30,580 INFO L93 Difference]: Finished difference Result 966 states and 2201 transitions. [2021-11-21 00:50:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:50:30,580 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 [2021-11-21 00:50:30,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:30,584 INFO L225 Difference]: With dead ends: 966 [2021-11-21 00:50:30,584 INFO L226 Difference]: Without dead ends: 866 [2021-11-21 00:50:30,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:50:30,585 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:30,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 34 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:50:30,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-11-21 00:50:30,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 810. [2021-11-21 00:50:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 808 states have (on average 2.3452970297029703) internal successors, (1895), 809 states have internal predecessors, (1895), 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) [2021-11-21 00:50:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1895 transitions. [2021-11-21 00:50:30,614 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1895 transitions. Word has length 21 [2021-11-21 00:50:30,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:30,614 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 1895 transitions. [2021-11-21 00:50:30,615 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) [2021-11-21 00:50:30,615 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1895 transitions. [2021-11-21 00:50:30,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 00:50:30,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:30,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:30,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:50:30,617 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-21 00:50:30,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1476646943, now seen corresponding path program 2 times [2021-11-21 00:50:30,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:30,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219406343] [2021-11-21 00:50:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:30,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:50:30,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:30,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219406343] [2021-11-21 00:50:30,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219406343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:30,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:30,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:50:30,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816564311] [2021-11-21 00:50:30,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:30,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:50:30,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:30,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:50:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:50:30,700 INFO L87 Difference]: Start difference. First operand 810 states and 1895 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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) [2021-11-21 00:50:30,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:30,812 INFO L93 Difference]: Finished difference Result 442 states and 977 transitions. [2021-11-21 00:50:30,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:50:30,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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 [2021-11-21 00:50:30,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:30,813 INFO L225 Difference]: With dead ends: 442 [2021-11-21 00:50:30,814 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 00:50:30,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:50:30,815 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 49 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:30,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 34 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:50:30,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 00:50:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 00:50:30,816 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) [2021-11-21 00:50:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 00:50:30,817 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-11-21 00:50:30,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:30,817 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 00:50:30,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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) [2021-11-21 00:50:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 00:50:30,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 00:50:30,820 INFO L764 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-21 00:50:30,821 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 7 remaining) [2021-11-21 00:50:30,821 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (4 of 7 remaining) [2021-11-21 00:50:30,821 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (3 of 7 remaining) [2021-11-21 00:50:30,822 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (2 of 7 remaining) [2021-11-21 00:50:30,822 INFO L764 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-11-21 00:50:30,822 INFO L764 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-21 00:50:30,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:50:30,824 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2021-11-21 00:50:30,829 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-21 00:50:30,830 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:50:30,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:50:30 BasicIcfg [2021-11-21 00:50:30,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:50:30,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:50:30,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:50:30,834 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:50:30,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:50:21" (3/4) ... [2021-11-21 00:50:30,837 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 00:50:30,842 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2021-11-21 00:50:30,842 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2021-11-21 00:50:30,848 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-11-21 00:50:30,848 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-21 00:50:30,848 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-21 00:50:30,849 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 00:50:30,893 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 00:50:30,893 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:50:30,894 INFO L158 Benchmark]: Toolchain (without parser) took 10528.35ms. Allocated memory was 121.6MB in the beginning and 226.5MB in the end (delta: 104.9MB). Free memory was 78.9MB in the beginning and 73.7MB in the end (delta: 5.2MB). Peak memory consumption was 109.8MB. Max. memory is 16.1GB. [2021-11-21 00:50:30,894 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 121.6MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:50:30,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 671.30ms. Allocated memory is still 121.6MB. Free memory was 78.7MB in the beginning and 83.0MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 00:50:30,895 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.14ms. Allocated memory is still 121.6MB. Free memory was 83.0MB in the beginning and 80.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:50:30,895 INFO L158 Benchmark]: Boogie Preprocessor took 31.17ms. Allocated memory is still 121.6MB. Free memory was 80.8MB in the beginning and 79.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:50:30,896 INFO L158 Benchmark]: RCFGBuilder took 671.90ms. Allocated memory is still 121.6MB. Free memory was 79.3MB in the beginning and 64.1MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-21 00:50:30,896 INFO L158 Benchmark]: TraceAbstraction took 8991.45ms. Allocated memory was 121.6MB in the beginning and 226.5MB in the end (delta: 104.9MB). Free memory was 63.7MB in the beginning and 75.8MB in the end (delta: -12.1MB). Peak memory consumption was 95.2MB. Max. memory is 16.1GB. [2021-11-21 00:50:30,904 INFO L158 Benchmark]: Witness Printer took 59.46ms. Allocated memory is still 226.5MB. Free memory was 75.8MB in the beginning and 73.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:50:30,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 121.6MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 671.30ms. Allocated memory is still 121.6MB. Free memory was 78.7MB in the beginning and 83.0MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.14ms. Allocated memory is still 121.6MB. Free memory was 83.0MB in the beginning and 80.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.17ms. Allocated memory is still 121.6MB. Free memory was 80.8MB in the beginning and 79.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 671.90ms. Allocated memory is still 121.6MB. Free memory was 79.3MB in the beginning and 64.1MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8991.45ms. Allocated memory was 121.6MB in the beginning and 226.5MB in the end (delta: 104.9MB). Free memory was 63.7MB in the beginning and 75.8MB in the end (delta: -12.1MB). Peak memory consumption was 95.2MB. Max. memory is 16.1GB. * Witness Printer took 59.46ms. Allocated memory is still 226.5MB. Free memory was 75.8MB in the beginning and 73.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 123 PlacesBefore, 54 PlacesAfterwards, 112 TransitionsBefore, 43 TransitionsAfterwards, 2408 CoEnabledTransitionPairs, 8 FixpointIterations, 34 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 87 TotalNumberOfCompositions, 10546 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5027, positive: 4729, positive conditional: 0, positive unconditional: 4729, negative: 298, negative conditional: 0, negative unconditional: 298, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1809, positive: 1765, positive conditional: 0, positive unconditional: 1765, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1809, positive: 1707, positive conditional: 0, positive unconditional: 1707, negative: 102, negative conditional: 0, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 102, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 148, positive: 65, positive conditional: 0, positive unconditional: 65, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5027, positive: 2964, positive conditional: 0, positive unconditional: 2964, negative: 254, negative conditional: 0, negative unconditional: 254, unknown: 1809, unknown conditional: 0, unknown unconditional: 1809] , Statistics on independence cache: Total cache size (in pairs): 310, Positive cache size: 284, Positive conditional cache size: 0, Positive unconditional cache size: 284, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 136 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 652 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 652 mSDsluCounter, 247 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 825 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1586 IncrementalHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 121 mSDtfsCounter, 1586 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3566occurred in iteration=1, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 5062 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-21 00:50:30,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9664b520-7a4c-4de7-8982-cc9451da48c4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE