./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe011_power.opt_pso.opt.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_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/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_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe011_power.opt_pso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/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_3176e2b4-52b7-4313-80c5-645a90d12fb2/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 bdec055c4bfc04b6b0c3fc918f7b96def91dcb331178222835136af29a7feef5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:35:32,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:35:32,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:35:32,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:35:32,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:35:32,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:35:32,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:35:32,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:35:32,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:35:32,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:35:32,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:35:32,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:35:32,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:35:32,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:35:32,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:35:32,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:35:32,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:35:32,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:35:32,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:35:32,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:35:32,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:35:32,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:35:32,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:35:32,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:35:32,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:35:32,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:35:32,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:35:32,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:35:32,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:35:32,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:35:32,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:35:32,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:35:32,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:35:32,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:35:32,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:35:32,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:35:32,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:35:32,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:35:32,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:35:32,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:35:32,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:35:32,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:35:32,423 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:35:32,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:35:32,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:35:32,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:35:32,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:35:32,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:35:32,435 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:35:32,435 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:35:32,435 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:35:32,435 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:35:32,436 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:35:32,437 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:35:32,437 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:35:32,437 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:35:32,437 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:35:32,438 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:35:32,438 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:35:32,438 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:35:32,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:35:32,439 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:35:32,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:35:32,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:35:32,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:35:32,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:35:32,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:35:32,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:35:32,442 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:35:32,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:35:32,443 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:35:32,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:35:32,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:35:32,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:35:32,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:32,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:35:32,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:35:32,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:35:32,445 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:35:32,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:35:32,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:35:32,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:35:32,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:35:32,446 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_3176e2b4-52b7-4313-80c5-645a90d12fb2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdec055c4bfc04b6b0c3fc918f7b96def91dcb331178222835136af29a7feef5 [2021-11-20 23:35:32,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:35:32,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:35:32,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:35:32,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:35:32,848 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:35:32,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/pthread-wmm/safe011_power.opt_pso.opt.i [2021-11-20 23:35:32,916 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P/data/46403a8e8/6a9fb3ca3f86453492b9c54591fbec6b/FLAG1a1ddc532 [2021-11-20 23:35:33,511 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:35:33,514 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/sv-benchmarks/c/pthread-wmm/safe011_power.opt_pso.opt.i [2021-11-20 23:35:33,544 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P/data/46403a8e8/6a9fb3ca3f86453492b9c54591fbec6b/FLAG1a1ddc532 [2021-11-20 23:35:33,789 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P/data/46403a8e8/6a9fb3ca3f86453492b9c54591fbec6b [2021-11-20 23:35:33,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:35:33,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:35:33,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:33,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:35:33,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:35:33,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:33" (1/1) ... [2021-11-20 23:35:33,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b875e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:33, skipping insertion in model container [2021-11-20 23:35:33,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:33" (1/1) ... [2021-11-20 23:35:33,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:35:33,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:34,071 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_3176e2b4-52b7-4313-80c5-645a90d12fb2/sv-benchmarks/c/pthread-wmm/safe011_power.opt_pso.opt.i[959,972] [2021-11-20 23:35:34,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:34,356 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:35:34,370 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_3176e2b4-52b7-4313-80c5-645a90d12fb2/sv-benchmarks/c/pthread-wmm/safe011_power.opt_pso.opt.i[959,972] [2021-11-20 23:35:34,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:34,468 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:35:34,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:34 WrapperNode [2021-11-20 23:35:34,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:34,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:34,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:35:34,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:35:34,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:34" (1/1) ... [2021-11-20 23:35:34,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:34" (1/1) ... [2021-11-20 23:35:34,583 INFO L137 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 274 [2021-11-20 23:35:34,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:34,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:35:34,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:35:34,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:35:34,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:34" (1/1) ... [2021-11-20 23:35:34,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:34" (1/1) ... [2021-11-20 23:35:34,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:34" (1/1) ... [2021-11-20 23:35:34,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:34" (1/1) ... [2021-11-20 23:35:34,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:34" (1/1) ... [2021-11-20 23:35:34,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:34" (1/1) ... [2021-11-20 23:35:34,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:34" (1/1) ... [2021-11-20 23:35:34,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:35:34,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:35:34,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:35:34,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:35:34,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:34" (1/1) ... [2021-11-20 23:35:34,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:34,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:34,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:35:34,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:35:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:35:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 23:35:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:35:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:35:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:35:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-20 23:35:34,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-20 23:35:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-20 23:35:34,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-20 23:35:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-20 23:35:34,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-20 23:35:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:35:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 23:35:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:35:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:35:34,716 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 23:35:34,839 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:35:34,841 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:35:35,318 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:35:35,638 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:35:35,638 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:35:35,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:35 BoogieIcfgContainer [2021-11-20 23:35:35,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:35:35,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:35:35,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:35:35,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:35:35,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:35:33" (1/3) ... [2021-11-20 23:35:35,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e291434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:35, skipping insertion in model container [2021-11-20 23:35:35,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:34" (2/3) ... [2021-11-20 23:35:35,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e291434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:35, skipping insertion in model container [2021-11-20 23:35:35,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:35" (3/3) ... [2021-11-20 23:35:35,649 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_power.opt_pso.opt.i [2021-11-20 23:35:35,654 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 23:35:35,655 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:35:35,655 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 23:35:35,655 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 23:35:35,691 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,691 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,692 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,692 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,692 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,692 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,693 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,693 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,693 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,693 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,694 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,694 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,694 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,694 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,694 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,695 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,695 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,695 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,695 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,696 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,696 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,696 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,697 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,697 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,697 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,697 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,698 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,698 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,698 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,698 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,699 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,699 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,699 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,699 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,699 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,700 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,700 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,700 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,700 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,701 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,701 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,701 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,701 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,702 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,702 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,702 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,702 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,702 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,703 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,703 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,704 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,704 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,704 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,704 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,704 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,704 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,705 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,705 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,706 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,706 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,706 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,706 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,707 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,707 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,707 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,707 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,707 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,708 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,708 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,708 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,708 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,709 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,709 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,709 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,709 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,710 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,710 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,710 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,711 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,711 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,711 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,711 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,712 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,712 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,712 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,713 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,715 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,716 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,716 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,716 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,716 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,717 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,717 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,717 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,717 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,717 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,718 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,719 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,719 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,719 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,719 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,720 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,720 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,720 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,720 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,720 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,721 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,721 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,721 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,722 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,722 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,722 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,722 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,722 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,723 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,723 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,723 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,723 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:35,724 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-20 23:35:35,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:35:35,774 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 [2021-11-20 23:35:35,774 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-20 23:35:35,788 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-20 23:35:35,801 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 114 transitions, 243 flow [2021-11-20 23:35:35,804 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 114 transitions, 243 flow [2021-11-20 23:35:35,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 122 places, 114 transitions, 243 flow [2021-11-20 23:35:35,864 INFO L129 PetriNetUnfolder]: 2/111 cut-off events. [2021-11-20 23:35:35,865 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-20 23:35:35,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 111 events. 2/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2021-11-20 23:35:35,875 INFO L116 LiptonReduction]: Number of co-enabled transitions 2082 [2021-11-20 23:35:51,331 INFO L131 LiptonReduction]: Checked pairs total: 5463 [2021-11-20 23:35:51,331 INFO L133 LiptonReduction]: Total number of compositions: 102 [2021-11-20 23:35:51,353 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 26 transitions, 67 flow [2021-11-20 23:35:51,431 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 722 states, 719 states have (on average 3.1196105702364396) internal successors, (2243), 721 states have internal predecessors, (2243), 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) [2021-11-20 23:35:51,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 722 states, 719 states have (on average 3.1196105702364396) internal successors, (2243), 721 states have internal predecessors, (2243), 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) [2021-11-20 23:35:51,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 23:35:51,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:51,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 23:35:51,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-20 23:35:51,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:51,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1073334370, now seen corresponding path program 1 times [2021-11-20 23:35:51,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:51,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393702781] [2021-11-20 23:35:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:51,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:51,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:51,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393702781] [2021-11-20 23:35:51,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393702781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:51,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:51,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 23:35:51,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162130794] [2021-11-20 23:35:51,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:51,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:35:51,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:51,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:35:51,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:35:51,702 INFO L87 Difference]: Start difference. First operand has 722 states, 719 states have (on average 3.1196105702364396) internal successors, (2243), 721 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-20 23:35:51,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:51,843 INFO L93 Difference]: Finished difference Result 587 states and 1790 transitions. [2021-11-20 23:35:51,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:35:51,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-20 23:35:51,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:51,875 INFO L225 Difference]: With dead ends: 587 [2021-11-20 23:35:51,875 INFO L226 Difference]: Without dead ends: 562 [2021-11-20 23:35:51,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:35:51,880 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:51,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:35:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-20 23:35:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-11-20 23:35:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 3.0748663101604277) internal successors, (1725), 561 states have internal predecessors, (1725), 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) [2021-11-20 23:35:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1725 transitions. [2021-11-20 23:35:51,981 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1725 transitions. Word has length 5 [2021-11-20 23:35:51,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:51,982 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 1725 transitions. [2021-11-20 23:35:51,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-20 23:35:51,982 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1725 transitions. [2021-11-20 23:35:51,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 23:35:51,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:51,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:51,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:35:51,985 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-20 23:35:51,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:51,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1482399254, now seen corresponding path program 1 times [2021-11-20 23:35:51,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:51,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382436242] [2021-11-20 23:35:51,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:51,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:52,130 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:52,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382436242] [2021-11-20 23:35:52,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382436242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:52,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:52,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 23:35:52,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313002176] [2021-11-20 23:35:52,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:52,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:35:52,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:52,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:35:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:35:52,133 INFO L87 Difference]: Start difference. First operand 562 states and 1725 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-11-20 23:35:52,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:52,189 INFO L93 Difference]: Finished difference Result 537 states and 1635 transitions. [2021-11-20 23:35:52,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:35:52,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2021-11-20 23:35:52,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:52,195 INFO L225 Difference]: With dead ends: 537 [2021-11-20 23:35:52,195 INFO L226 Difference]: Without dead ends: 537 [2021-11-20 23:35:52,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:35:52,197 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:52,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 6 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:35:52,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-11-20 23:35:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2021-11-20 23:35:52,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 3.050373134328358) internal successors, (1635), 536 states have internal predecessors, (1635), 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) [2021-11-20 23:35:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1635 transitions. [2021-11-20 23:35:52,242 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1635 transitions. Word has length 9 [2021-11-20 23:35:52,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:52,243 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 1635 transitions. [2021-11-20 23:35:52,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-11-20 23:35:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1635 transitions. [2021-11-20 23:35:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 23:35:52,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:52,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:52,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:35:52,248 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-20 23:35:52,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:52,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1290263009, now seen corresponding path program 1 times [2021-11-20 23:35:52,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:52,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486885010] [2021-11-20 23:35:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:52,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:52,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:52,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486885010] [2021-11-20 23:35:52,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486885010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:52,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:52,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:35:52,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790536418] [2021-11-20 23:35:52,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:52,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:35:52,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:52,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:35:52,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:35:52,420 INFO L87 Difference]: Start difference. First operand 537 states and 1635 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:52,528 INFO L93 Difference]: Finished difference Result 677 states and 2012 transitions. [2021-11-20 23:35:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:35:52,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-20 23:35:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:52,532 INFO L225 Difference]: With dead ends: 677 [2021-11-20 23:35:52,533 INFO L226 Difference]: Without dead ends: 377 [2021-11-20 23:35:52,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:35:52,537 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 37 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:52,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 8 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:35:52,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-20 23:35:52,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-20 23:35:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.8643617021276597) internal successors, (1077), 376 states have internal predecessors, (1077), 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) [2021-11-20 23:35:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1077 transitions. [2021-11-20 23:35:52,559 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1077 transitions. Word has length 10 [2021-11-20 23:35:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:52,559 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 1077 transitions. [2021-11-20 23:35:52,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:52,560 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1077 transitions. [2021-11-20 23:35:52,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 23:35:52,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:52,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:52,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:35:52,567 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-20 23:35:52,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:52,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1302924151, now seen corresponding path program 1 times [2021-11-20 23:35:52,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:52,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13783802] [2021-11-20 23:35:52,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:52,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:52,689 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:52,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13783802] [2021-11-20 23:35:52,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13783802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:52,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:52,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 23:35:52,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162273756] [2021-11-20 23:35:52,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:52,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:35:52,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:35:52,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:35:52,694 INFO L87 Difference]: Start difference. First operand 377 states and 1077 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:52,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:52,752 INFO L93 Difference]: Finished difference Result 374 states and 1066 transitions. [2021-11-20 23:35:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:35:52,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 23:35:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:52,756 INFO L225 Difference]: With dead ends: 374 [2021-11-20 23:35:52,756 INFO L226 Difference]: Without dead ends: 374 [2021-11-20 23:35:52,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:35:52,757 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:52,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 5 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:35:52,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-20 23:35:52,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-20 23:35:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 2.8579088471849867) internal successors, (1066), 373 states have internal predecessors, (1066), 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) [2021-11-20 23:35:52,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1066 transitions. [2021-11-20 23:35:52,806 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1066 transitions. Word has length 12 [2021-11-20 23:35:52,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:52,807 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 1066 transitions. [2021-11-20 23:35:52,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:52,807 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1066 transitions. [2021-11-20 23:35:52,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 23:35:52,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:52,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:52,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:35:52,808 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-20 23:35:52,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:52,809 INFO L85 PathProgramCache]: Analyzing trace with hash 743147136, now seen corresponding path program 1 times [2021-11-20 23:35:52,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:52,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589882327] [2021-11-20 23:35:52,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:52,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:52,983 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:52,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589882327] [2021-11-20 23:35:52,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589882327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:52,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:52,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:35:52,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740611046] [2021-11-20 23:35:52,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:52,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:35:52,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:52,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:35:52,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:35:52,986 INFO L87 Difference]: Start difference. First operand 374 states and 1066 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:53,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:53,073 INFO L93 Difference]: Finished difference Result 401 states and 1136 transitions. [2021-11-20 23:35:53,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:35:53,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 23:35:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:53,078 INFO L225 Difference]: With dead ends: 401 [2021-11-20 23:35:53,078 INFO L226 Difference]: Without dead ends: 401 [2021-11-20 23:35:53,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:35:53,079 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:53,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 7 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:35:53,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-20 23:35:53,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2021-11-20 23:35:53,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 2.84) internal successors, (1136), 400 states have internal predecessors, (1136), 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) [2021-11-20 23:35:53,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1136 transitions. [2021-11-20 23:35:53,098 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1136 transitions. Word has length 13 [2021-11-20 23:35:53,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:53,098 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1136 transitions. [2021-11-20 23:35:53,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:53,099 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1136 transitions. [2021-11-20 23:35:53,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:35:53,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:53,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:53,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:35:53,100 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-20 23:35:53,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:53,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1562669586, now seen corresponding path program 1 times [2021-11-20 23:35:53,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:53,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442999274] [2021-11-20 23:35:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:53,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:53,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:53,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442999274] [2021-11-20 23:35:53,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442999274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:53,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:53,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:35:53,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739926461] [2021-11-20 23:35:53,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:53,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:35:53,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:53,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:35:53,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:35:53,201 INFO L87 Difference]: Start difference. First operand 401 states and 1136 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-20 23:35:53,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:53,304 INFO L93 Difference]: Finished difference Result 389 states and 984 transitions. [2021-11-20 23:35:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:35:53,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-11-20 23:35:53,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:53,308 INFO L225 Difference]: With dead ends: 389 [2021-11-20 23:35:53,308 INFO L226 Difference]: Without dead ends: 296 [2021-11-20 23:35:53,308 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 [2021-11-20 23:35:53,309 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 29 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:53,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 15 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:35:53,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-20 23:35:53,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-11-20 23:35:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 2.488135593220339) internal successors, (734), 295 states have internal predecessors, (734), 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) [2021-11-20 23:35:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 734 transitions. [2021-11-20 23:35:53,322 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 734 transitions. Word has length 14 [2021-11-20 23:35:53,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:53,322 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 734 transitions. [2021-11-20 23:35:53,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-20 23:35:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 734 transitions. [2021-11-20 23:35:53,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:35:53,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:53,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:53,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:35:53,324 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-20 23:35:53,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:53,325 INFO L85 PathProgramCache]: Analyzing trace with hash 186204633, now seen corresponding path program 1 times [2021-11-20 23:35:53,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:53,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238678656] [2021-11-20 23:35:53,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:53,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:53,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:53,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238678656] [2021-11-20 23:35:53,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238678656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:53,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:53,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:35:53,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803773777] [2021-11-20 23:35:53,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:53,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:35:53,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:53,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:35:53,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:35:53,460 INFO L87 Difference]: Start difference. First operand 296 states and 734 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:53,597 INFO L93 Difference]: Finished difference Result 244 states and 558 transitions. [2021-11-20 23:35:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:35:53,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 23:35:53,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:53,600 INFO L225 Difference]: With dead ends: 244 [2021-11-20 23:35:53,600 INFO L226 Difference]: Without dead ends: 195 [2021-11-20 23:35:53,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:35:53,601 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 52 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:53,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 19 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:35:53,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-20 23:35:53,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 179. [2021-11-20 23:35:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.241573033707865) internal successors, (399), 178 states have internal predecessors, (399), 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) [2021-11-20 23:35:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 399 transitions. [2021-11-20 23:35:53,609 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 399 transitions. Word has length 15 [2021-11-20 23:35:53,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:53,610 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 399 transitions. [2021-11-20 23:35:53,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:53,610 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 399 transitions. [2021-11-20 23:35:53,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:35:53,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:53,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:53,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:35:53,612 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-20 23:35:53,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:53,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1455810115, now seen corresponding path program 1 times [2021-11-20 23:35:53,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:53,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268541401] [2021-11-20 23:35:53,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:53,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:53,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:53,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268541401] [2021-11-20 23:35:53,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268541401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:53,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:53,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:35:53,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004563071] [2021-11-20 23:35:53,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:53,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:35:53,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:53,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:35:53,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:35:53,720 INFO L87 Difference]: Start difference. First operand 179 states and 399 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-20 23:35:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:53,785 INFO L93 Difference]: Finished difference Result 233 states and 504 transitions. [2021-11-20 23:35:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:35:53,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-11-20 23:35:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:53,788 INFO L225 Difference]: With dead ends: 233 [2021-11-20 23:35:53,788 INFO L226 Difference]: Without dead ends: 181 [2021-11-20 23:35:53,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:35:53,791 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:53,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:35:53,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-20 23:35:53,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2021-11-20 23:35:53,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.1638418079096047) internal successors, (383), 177 states have internal predecessors, (383), 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) [2021-11-20 23:35:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 383 transitions. [2021-11-20 23:35:53,800 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 383 transitions. Word has length 17 [2021-11-20 23:35:53,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:53,801 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 383 transitions. [2021-11-20 23:35:53,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-20 23:35:53,801 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 383 transitions. [2021-11-20 23:35:53,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:35:53,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:53,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:53,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:35:53,803 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-20 23:35:53,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:53,803 INFO L85 PathProgramCache]: Analyzing trace with hash 370631016, now seen corresponding path program 1 times [2021-11-20 23:35:53,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:53,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846890040] [2021-11-20 23:35:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:53,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:53,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:53,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846890040] [2021-11-20 23:35:53,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846890040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:53,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:53,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:35:53,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129993139] [2021-11-20 23:35:53,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:53,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:35:53,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:53,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:35:53,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:35:53,979 INFO L87 Difference]: Start difference. First operand 178 states and 383 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-20 23:35:54,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:54,132 INFO L93 Difference]: Finished difference Result 161 states and 348 transitions. [2021-11-20 23:35:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:35:54,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2021-11-20 23:35:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:54,133 INFO L225 Difference]: With dead ends: 161 [2021-11-20 23:35:54,133 INFO L226 Difference]: Without dead ends: 70 [2021-11-20 23:35:54,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:35:54,135 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 45 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:54,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 12 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:35:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-20 23:35:54,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-20 23:35:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.9275362318840579) internal successors, (133), 69 states have internal predecessors, (133), 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) [2021-11-20 23:35:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 133 transitions. [2021-11-20 23:35:54,139 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 133 transitions. Word has length 18 [2021-11-20 23:35:54,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:54,139 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 133 transitions. [2021-11-20 23:35:54,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-20 23:35:54,139 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 133 transitions. [2021-11-20 23:35:54,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:35:54,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:54,140 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] [2021-11-20 23:35:54,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:35:54,141 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-20 23:35:54,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:54,141 INFO L85 PathProgramCache]: Analyzing trace with hash -110925319, now seen corresponding path program 1 times [2021-11-20 23:35:54,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:54,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084192622] [2021-11-20 23:35:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:54,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:54,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:54,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084192622] [2021-11-20 23:35:54,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084192622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:54,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:54,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:35:54,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630275559] [2021-11-20 23:35:54,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:54,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:35:54,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:54,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:35:54,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:35:54,407 INFO L87 Difference]: Start difference. First operand 70 states and 133 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2021-11-20 23:35:54,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:54,502 INFO L93 Difference]: Finished difference Result 90 states and 168 transitions. [2021-11-20 23:35:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:35:54,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 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 [2021-11-20 23:35:54,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:54,503 INFO L225 Difference]: With dead ends: 90 [2021-11-20 23:35:54,503 INFO L226 Difference]: Without dead ends: 50 [2021-11-20 23:35:54,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:35:54,504 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 16 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:54,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:35:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-20 23:35:54,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-20 23:35:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.7346938775510203) internal successors, (85), 49 states have internal predecessors, (85), 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) [2021-11-20 23:35:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 85 transitions. [2021-11-20 23:35:54,507 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 85 transitions. Word has length 21 [2021-11-20 23:35:54,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:54,507 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 85 transitions. [2021-11-20 23:35:54,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2021-11-20 23:35:54,508 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 85 transitions. [2021-11-20 23:35:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:35:54,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:54,508 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] [2021-11-20 23:35:54,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:35:54,509 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-20 23:35:54,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:54,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2036116281, now seen corresponding path program 2 times [2021-11-20 23:35:54,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:54,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691383211] [2021-11-20 23:35:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:54,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:35:54,570 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:35:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:35:54,668 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:35:54,668 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:35:54,669 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-20 23:35:54,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-20 23:35:54,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-11-20 23:35:54,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-11-20 23:35:54,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 6 remaining) [2021-11-20 23:35:54,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-20 23:35:54,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:35:54,674 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:54,679 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-20 23:35:54,679 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:35:54,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:35:54 BasicIcfg [2021-11-20 23:35:54,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:35:54,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:35:54,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:35:54,782 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:35:54,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:35" (3/4) ... [2021-11-20 23:35:54,786 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 23:35:54,893 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:35:54,893 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:35:54,894 INFO L158 Benchmark]: Toolchain (without parser) took 21100.87ms. Allocated memory was 79.7MB in the beginning and 224.4MB in the end (delta: 144.7MB). Free memory was 34.8MB in the beginning and 94.8MB in the end (delta: -60.0MB). Peak memory consumption was 86.6MB. Max. memory is 16.1GB. [2021-11-20 23:35:54,894 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 79.7MB. Free memory was 52.8MB in the beginning and 52.8MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:35:54,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 672.13ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 34.6MB in the beginning and 75.2MB in the end (delta: -40.7MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-11-20 23:35:54,895 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.28ms. Allocated memory is still 117.4MB. Free memory was 75.2MB in the beginning and 92.7MB in the end (delta: -17.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 23:35:54,896 INFO L158 Benchmark]: Boogie Preprocessor took 38.08ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 90.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:35:54,896 INFO L158 Benchmark]: RCFGBuilder took 1018.01ms. Allocated memory is still 117.4MB. Free memory was 90.1MB in the beginning and 72.1MB in the end (delta: 18.0MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2021-11-20 23:35:54,897 INFO L158 Benchmark]: TraceAbstraction took 19139.25ms. Allocated memory was 117.4MB in the beginning and 224.4MB in the end (delta: 107.0MB). Free memory was 71.4MB in the beginning and 107.4MB in the end (delta: -36.0MB). Peak memory consumption was 73.0MB. Max. memory is 16.1GB. [2021-11-20 23:35:54,897 INFO L158 Benchmark]: Witness Printer took 111.33ms. Allocated memory is still 224.4MB. Free memory was 107.4MB in the beginning and 94.8MB in the end (delta: 12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 23:35:54,899 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 79.7MB. Free memory was 52.8MB in the beginning and 52.8MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 672.13ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 34.6MB in the beginning and 75.2MB in the end (delta: -40.7MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.28ms. Allocated memory is still 117.4MB. Free memory was 75.2MB in the beginning and 92.7MB in the end (delta: -17.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.08ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 90.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1018.01ms. Allocated memory is still 117.4MB. Free memory was 90.1MB in the beginning and 72.1MB in the end (delta: 18.0MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. * TraceAbstraction took 19139.25ms. Allocated memory was 117.4MB in the beginning and 224.4MB in the end (delta: 107.0MB). Free memory was 71.4MB in the beginning and 107.4MB in the end (delta: -36.0MB). Peak memory consumption was 73.0MB. Max. memory is 16.1GB. * Witness Printer took 111.33ms. Allocated memory is still 224.4MB. Free memory was 107.4MB in the beginning and 94.8MB in the end (delta: 12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.5s, 122 PlacesBefore, 36 PlacesAfterwards, 114 TransitionsBefore, 26 TransitionsAfterwards, 2082 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 102 TotalNumberOfCompositions, 5463 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2726, positive: 2551, positive conditional: 0, positive unconditional: 2551, negative: 175, negative conditional: 0, negative unconditional: 175, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1549, positive: 1489, positive conditional: 0, positive unconditional: 1489, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1549, positive: 1473, positive conditional: 0, positive unconditional: 1473, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 76, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 803, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 768, negative conditional: 0, negative unconditional: 768, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2726, positive: 1062, positive conditional: 0, positive unconditional: 1062, negative: 115, negative conditional: 0, negative unconditional: 115, unknown: 1549, unknown conditional: 0, unknown unconditional: 1549] , Statistics on independence cache: Total cache size (in pairs): 138, Positive cache size: 114, Positive conditional cache size: 0, Positive unconditional cache size: 114, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24 - 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L712] 0 _Bool main$tmp_guard0; [L713] 0 _Bool main$tmp_guard1; [L715] 0 int x = 0; [L716] 0 _Bool x$flush_delayed; [L717] 0 int x$mem_tmp; [L718] 0 _Bool x$r_buff0_thd0; [L719] 0 _Bool x$r_buff0_thd1; [L720] 0 _Bool x$r_buff0_thd2; [L721] 0 _Bool x$r_buff0_thd3; [L722] 0 _Bool x$r_buff1_thd0; [L723] 0 _Bool x$r_buff1_thd1; [L724] 0 _Bool x$r_buff1_thd2; [L725] 0 _Bool x$r_buff1_thd3; [L726] 0 _Bool x$read_delayed; [L727] 0 int *x$read_delayed_var; [L728] 0 int x$w_buff0; [L729] 0 _Bool x$w_buff0_used; [L730] 0 int x$w_buff1; [L731] 0 _Bool x$w_buff1_used; [L733] 0 int y = 0; [L735] 0 int z = 0; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L818] 0 pthread_t t2028; [L819] FCALL, FORK 0 pthread_create(&t2028, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2028, ((void *)0), P0, ((void *)0))=-2, t2028={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L820] 0 pthread_t t2029; [L821] FCALL, FORK 0 pthread_create(&t2029, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2029, ((void *)0), P1, ((void *)0))=-1, t2028={5:0}, t2029={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L822] 0 pthread_t t2030; [L823] FCALL, FORK 0 pthread_create(&t2030, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2030, ((void *)0), P2, ((void *)0))=0, t2028={5:0}, t2029={6:0}, t2030={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L761] 2 x$w_buff1 = x$w_buff0 [L762] 2 x$w_buff0 = 2 [L763] 2 x$w_buff1_used = x$w_buff0_used [L764] 2 x$w_buff0_used = (_Bool)1 [L765] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L765] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L766] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L767] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L768] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L769] 2 x$r_buff1_thd3 = x$r_buff0_thd3 [L770] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L773] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=0] [L790] 3 __unbuffered_p2_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=0] [L793] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L741] 1 z = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] [L744] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] [L776] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L776] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L777] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L777] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L778] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L778] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L779] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L779] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L780] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L780] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L783] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L785] 2 return 0; [L796] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L796] EXPR 3 x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x [L796] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L796] 3 x = x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L797] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$w_buff0_used [L797] 3 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$w_buff0_used [L798] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$w_buff1_used [L798] 3 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$w_buff1_used [L799] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$r_buff0_thd3 [L799] 3 x$r_buff0_thd3 = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$r_buff0_thd3 [L800] EXPR 3 x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$r_buff1_thd3 [L800] 3 x$r_buff1_thd3 = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$r_buff1_thd3 [L803] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L805] 3 return 0; [L747] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L747] EXPR 1 x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x [L747] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L747] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L748] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L748] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L749] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L749] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L750] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L750] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L751] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L751] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L754] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L756] 1 return 0; [L825] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L827] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L827] RET 0 assume_abort_if_not(main$tmp_guard0) [L829] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L829] EXPR 0 x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x [L829] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L829] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L830] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L830] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L831] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L831] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L832] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L832] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L833] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L833] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L836] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L837] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L838] 0 x$flush_delayed = weak$$choice2 [L839] 0 x$mem_tmp = x [L840] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L840] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L841] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L841] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0) [L841] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L841] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L842] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L842] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1) [L842] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L842] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L843] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L843] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used) [L843] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L843] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L844] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L844] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L844] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L844] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L845] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L845] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0) [L845] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L845] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L846] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L846] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L846] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L846] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L847] 0 main$tmp_guard1 = !(x == 2 && z == 2 && __unbuffered_p2_EAX == 1) [L848] EXPR 0 x$flush_delayed ? x$mem_tmp : x [L848] 0 x = x$flush_delayed ? x$mem_tmp : x [L849] 0 x$flush_delayed = (_Bool)0 [L851] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 823]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 821]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 141 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 18.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.7s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 233 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 233 mSDsluCounter, 92 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 282 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 547 IncrementalHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 38 mSDtfsCounter, 547 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=722occurred in iteration=0, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 796 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-20 23:35:54,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3176e2b4-52b7-4313-80c5-645a90d12fb2/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE