./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF --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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:25:59,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:25:59,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:25:59,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:25:59,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:25:59,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:25:59,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:25:59,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:25:59,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:25:59,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:25:59,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:25:59,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:25:59,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:25:59,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:25:59,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:25:59,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:25:59,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:25:59,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:25:59,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:25:59,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:25:59,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:25:59,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:25:59,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:25:59,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:25:59,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:25:59,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:25:59,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:25:59,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:25:59,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:25:59,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:25:59,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:25:59,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:25:59,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:25:59,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:25:59,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:25:59,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:25:59,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:25:59,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:25:59,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:25:59,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:25:59,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:25:59,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:25:59,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:25:59,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:25:59,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:25:59,500 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:25:59,500 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:25:59,500 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:25:59,506 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:25:59,507 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:25:59,507 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:25:59,507 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:25:59,508 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:25:59,509 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:25:59,509 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:25:59,509 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:25:59,510 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:25:59,510 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:25:59,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:25:59,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:25:59,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:25:59,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:25:59,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:25:59,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:25:59,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:25:59,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:25:59,512 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:25:59,513 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:25:59,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:25:59,513 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:25:59,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:25:59,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:25:59,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:25:59,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:25:59,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:25:59,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:25:59,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:25:59,517 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:25:59,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:25:59,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:25:59,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:25:59,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:25:59,518 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_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2021-11-12 23:25:59,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:25:59,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:25:59,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:25:59,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:25:59,803 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:25:59,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/pthread/lazy01.i [2021-11-12 23:25:59,878 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/data/a196e57e5/1387e4cfbb2147ee879592e9de8d9d79/FLAGf5c44ca48 [2021-11-12 23:26:00,414 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:26:00,415 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/sv-benchmarks/c/pthread/lazy01.i [2021-11-12 23:26:00,439 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/data/a196e57e5/1387e4cfbb2147ee879592e9de8d9d79/FLAGf5c44ca48 [2021-11-12 23:26:00,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/data/a196e57e5/1387e4cfbb2147ee879592e9de8d9d79 [2021-11-12 23:26:00,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:26:00,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:26:00,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:26:00,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:26:00,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:26:00,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:26:00" (1/1) ... [2021-11-12 23:26:00,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@317b87a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:00, skipping insertion in model container [2021-11-12 23:26:00,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:26:00" (1/1) ... [2021-11-12 23:26:00,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:26:00,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:26:01,159 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2021-11-12 23:26:01,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:26:01,195 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:26:01,249 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2021-11-12 23:26:01,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:26:01,293 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:26:01,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01 WrapperNode [2021-11-12 23:26:01,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:26:01,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:26:01,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:26:01,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:26:01,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01" (1/1) ... [2021-11-12 23:26:01,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01" (1/1) ... [2021-11-12 23:26:01,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:26:01,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:26:01,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:26:01,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:26:01,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01" (1/1) ... [2021-11-12 23:26:01,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01" (1/1) ... [2021-11-12 23:26:01,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01" (1/1) ... [2021-11-12 23:26:01,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01" (1/1) ... [2021-11-12 23:26:01,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01" (1/1) ... [2021-11-12 23:26:01,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01" (1/1) ... [2021-11-12 23:26:01,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01" (1/1) ... [2021-11-12 23:26:01,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:26:01,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:26:01,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:26:01,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:26:01,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01" (1/1) ... [2021-11-12 23:26:01,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:26:01,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:26:01,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:26:01,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:26:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 23:26:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-12 23:26:01,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-12 23:26:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-12 23:26:01,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-12 23:26:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-12 23:26:01,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-12 23:26:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 23:26:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-12 23:26:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:26:01,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:26:01,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:26:01,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:26:01,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:26:01,451 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-12 23:26:01,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:26:01,821 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:26:01,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:26:01 BoogieIcfgContainer [2021-11-12 23:26:01,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:26:01,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:26:01,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:26:01,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:26:01,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:26:00" (1/3) ... [2021-11-12 23:26:01,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759847f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:26:01, skipping insertion in model container [2021-11-12 23:26:01,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01" (2/3) ... [2021-11-12 23:26:01,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759847f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:26:01, skipping insertion in model container [2021-11-12 23:26:01,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:26:01" (3/3) ... [2021-11-12 23:26:01,831 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2021-11-12 23:26:01,836 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-12 23:26:01,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:26:01,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:26:01,837 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 23:26:01,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,874 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,874 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,875 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,875 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,875 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,876 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,876 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,881 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,881 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,881 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,885 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,885 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,886 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,886 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,886 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,886 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,887 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,887 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,887 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,887 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,888 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,889 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,889 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,890 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,890 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,890 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,891 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,893 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,893 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,893 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,894 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,896 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,897 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,897 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,898 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,898 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,899 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,899 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,900 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,903 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,903 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,904 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,918 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,918 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,922 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,923 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,923 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,923 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,923 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,925 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,925 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:01,929 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-12 23:26:02,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:26:02,007 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:26:02,007 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-12 23:26:02,021 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 23:26:02,035 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 204 flow [2021-11-12 23:26:02,038 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 90 transitions, 204 flow [2021-11-12 23:26:02,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 204 flow [2021-11-12 23:26:02,117 INFO L129 PetriNetUnfolder]: 1/87 cut-off events. [2021-11-12 23:26:02,118 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-12 23:26:02,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 1/87 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-11-12 23:26:02,146 INFO L116 LiptonReduction]: Number of co-enabled transitions 1114 [2021-11-12 23:26:05,791 INFO L131 LiptonReduction]: Checked pairs total: 2809 [2021-11-12 23:26:05,791 INFO L133 LiptonReduction]: Total number of compositions: 67 [2021-11-12 23:26:05,800 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 28 transitions, 80 flow [2021-11-12 23:26:05,827 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 202 states, 201 states have (on average 2.5671641791044775) internal successors, (516), 201 states have internal predecessors, (516), 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) [2021-11-12 23:26:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 201 states have (on average 2.5671641791044775) internal successors, (516), 201 states have internal predecessors, (516), 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) [2021-11-12 23:26:05,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:26:05,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:05,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:05,839 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:26:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1411768919, now seen corresponding path program 1 times [2021-11-12 23:26:05,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:26:05,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889127062] [2021-11-12 23:26:05,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:05,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:26:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:06,073 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:26:06,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889127062] [2021-11-12 23:26:06,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889127062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:06,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:06,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 23:26:06,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39808201] [2021-11-12 23:26:06,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:06,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:26:06,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:26:06,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:26:06,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:26:06,107 INFO L87 Difference]: Start difference. First operand has 202 states, 201 states have (on average 2.5671641791044775) internal successors, (516), 201 states have internal predecessors, (516), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:26:06,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:06,199 INFO L93 Difference]: Finished difference Result 190 states and 474 transitions. [2021-11-12 23:26:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:26:06,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:26:06,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:06,221 INFO L225 Difference]: With dead ends: 190 [2021-11-12 23:26:06,221 INFO L226 Difference]: Without dead ends: 190 [2021-11-12 23:26:06,222 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 [2021-11-12 23:26:06,228 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.83ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:06,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 38 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 48.83ms Time] [2021-11-12 23:26:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-12 23:26:06,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-11-12 23:26:06,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.507936507936508) internal successors, (474), 189 states have internal predecessors, (474), 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) [2021-11-12 23:26:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 474 transitions. [2021-11-12 23:26:06,310 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 474 transitions. Word has length 8 [2021-11-12 23:26:06,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:06,311 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 474 transitions. [2021-11-12 23:26:06,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:26:06,312 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 474 transitions. [2021-11-12 23:26:06,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 23:26:06,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:06,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:06,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:26:06,316 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:26:06,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:06,319 INFO L85 PathProgramCache]: Analyzing trace with hash -499032435, now seen corresponding path program 1 times [2021-11-12 23:26:06,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:26:06,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993646413] [2021-11-12 23:26:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:06,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:26:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:06,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:26:06,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993646413] [2021-11-12 23:26:06,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993646413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:06,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:06,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:26:06,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504795556] [2021-11-12 23:26:06,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:06,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:26:06,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:26:06,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:26:06,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:26:06,433 INFO L87 Difference]: Start difference. First operand 190 states and 474 transitions. Second operand has 3 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) [2021-11-12 23:26:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:06,490 INFO L93 Difference]: Finished difference Result 104 states and 179 transitions. [2021-11-12 23:26:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:26:06,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2021-11-12 23:26:06,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:06,493 INFO L225 Difference]: With dead ends: 104 [2021-11-12 23:26:06,494 INFO L226 Difference]: Without dead ends: 102 [2021-11-12 23:26:06,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:26:06,497 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.57ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:06,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.57ms Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 47.96ms Time] [2021-11-12 23:26:06,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-12 23:26:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-11-12 23:26:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 99 states have (on average 1.7777777777777777) internal successors, (176), 101 states have internal predecessors, (176), 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) [2021-11-12 23:26:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 176 transitions. [2021-11-12 23:26:06,514 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 176 transitions. Word has length 10 [2021-11-12 23:26:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:06,514 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 176 transitions. [2021-11-12 23:26:06,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2021-11-12 23:26:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 176 transitions. [2021-11-12 23:26:06,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:26:06,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:06,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:06,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:26:06,517 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:26:06,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:06,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1709905155, now seen corresponding path program 1 times [2021-11-12 23:26:06,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:26:06,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811629562] [2021-11-12 23:26:06,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:06,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:26:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:06,632 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:26:06,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811629562] [2021-11-12 23:26:06,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811629562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:06,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:06,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:26:06,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314926815] [2021-11-12 23:26:06,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:06,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:26:06,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:26:06,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:26:06,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:26:06,636 INFO L87 Difference]: Start difference. First operand 102 states and 176 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:26:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:06,698 INFO L93 Difference]: Finished difference Result 100 states and 173 transitions. [2021-11-12 23:26:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:26:06,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 23:26:06,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:06,701 INFO L225 Difference]: With dead ends: 100 [2021-11-12 23:26:06,701 INFO L226 Difference]: Without dead ends: 98 [2021-11-12 23:26:06,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:26:06,709 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:06,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 55 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 47.04ms Time] [2021-11-12 23:26:06,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-12 23:26:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-11-12 23:26:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 96 states have (on average 1.7708333333333333) internal successors, (170), 97 states have internal predecessors, (170), 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) [2021-11-12 23:26:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 170 transitions. [2021-11-12 23:26:06,727 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 170 transitions. Word has length 11 [2021-11-12 23:26:06,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:06,728 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 170 transitions. [2021-11-12 23:26:06,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:26:06,728 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 170 transitions. [2021-11-12 23:26:06,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:26:06,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:06,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:06,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 23:26:06,729 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:26:06,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:06,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1534648637, now seen corresponding path program 1 times [2021-11-12 23:26:06,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:26:06,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844604013] [2021-11-12 23:26:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:06,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:26:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:06,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:26:06,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844604013] [2021-11-12 23:26:06,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844604013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:06,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:06,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:26:06,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775680851] [2021-11-12 23:26:06,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:06,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:26:06,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:26:06,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:26:06,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:26:06,803 INFO L87 Difference]: Start difference. First operand 98 states and 170 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-11-12 23:26:06,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:06,890 INFO L93 Difference]: Finished difference Result 94 states and 163 transitions. [2021-11-12 23:26:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:26:06,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 [2021-11-12 23:26:06,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:06,891 INFO L225 Difference]: With dead ends: 94 [2021-11-12 23:26:06,891 INFO L226 Difference]: Without dead ends: 90 [2021-11-12 23:26:06,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:26:06,892 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.39ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:06,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 82 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 69.39ms Time] [2021-11-12 23:26:06,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-12 23:26:06,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-11-12 23:26:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.752808988764045) internal successors, (156), 89 states have internal predecessors, (156), 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) [2021-11-12 23:26:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 156 transitions. [2021-11-12 23:26:06,897 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 156 transitions. Word has length 12 [2021-11-12 23:26:06,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:06,897 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 156 transitions. [2021-11-12 23:26:06,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-11-12 23:26:06,898 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 156 transitions. [2021-11-12 23:26:06,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 23:26:06,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:06,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:06,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 23:26:06,899 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:26:06,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:06,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1187519395, now seen corresponding path program 1 times [2021-11-12 23:26:06,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:26:06,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377183175] [2021-11-12 23:26:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:06,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:26:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:26:06,931 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:26:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:26:06,983 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:26:06,983 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:26:06,984 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-11-12 23:26:06,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-12 23:26:06,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 5 remaining) [2021-11-12 23:26:06,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 5 remaining) [2021-11-12 23:26:06,987 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 5 remaining) [2021-11-12 23:26:06,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 23:26:06,989 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-12 23:26:06,994 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-12 23:26:06,994 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:26:07,015 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:26:07,018 INFO L158 Benchmark]: Toolchain (without parser) took 6295.00ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 74.5MB in the beginning and 87.1MB in the end (delta: -12.7MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-11-12 23:26:07,026 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory was 42.5MB in the beginning and 42.4MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:26:07,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 559.26ms. Allocated memory is still 109.1MB. Free memory was 74.2MB in the beginning and 75.7MB in the end (delta: -1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:26:07,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.18ms. Allocated memory is still 109.1MB. Free memory was 75.3MB in the beginning and 73.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:26:07,027 INFO L158 Benchmark]: Boogie Preprocessor took 25.96ms. Allocated memory is still 109.1MB. Free memory was 73.6MB in the beginning and 72.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:26:07,028 INFO L158 Benchmark]: RCFGBuilder took 445.28ms. Allocated memory is still 109.1MB. Free memory was 72.2MB in the beginning and 59.7MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:26:07,028 INFO L158 Benchmark]: TraceAbstraction took 5193.64ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 58.9MB in the beginning and 87.1MB in the end (delta: -28.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:26:07,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory was 42.5MB in the beginning and 42.4MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 559.26ms. Allocated memory is still 109.1MB. Free memory was 74.2MB in the beginning and 75.7MB in the end (delta: -1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.18ms. Allocated memory is still 109.1MB. Free memory was 75.3MB in the beginning and 73.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.96ms. Allocated memory is still 109.1MB. Free memory was 73.6MB in the beginning and 72.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 445.28ms. Allocated memory is still 109.1MB. Free memory was 72.2MB in the beginning and 59.7MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5193.64ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 58.9MB in the beginning and 87.1MB in the end (delta: -28.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 99 PlacesBefore, 37 PlacesAfterwards, 90 TransitionsBefore, 28 TransitionsAfterwards, 1114 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 67 TotalNumberOfCompositions, 2809 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1827, positive: 1717, positive conditional: 0, positive unconditional: 1717, negative: 110, negative conditional: 0, negative unconditional: 110, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 840, positive: 813, positive conditional: 0, positive unconditional: 813, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 840, positive: 792, positive conditional: 0, positive unconditional: 792, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 48, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 104, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1827, positive: 904, positive conditional: 0, positive unconditional: 904, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 840, unknown conditional: 0, unknown unconditional: 840] , Statistics on independence cache: Total cache size (in pairs): 146, Positive cache size: 131, Positive conditional cache size: 0, Positive unconditional cache size: 131, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:26:07,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF --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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:26:09,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:26:09,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:26:09,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:26:09,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:26:09,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:26:09,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:26:09,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:26:09,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:26:09,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:26:09,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:26:09,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:26:09,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:26:09,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:26:09,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:26:09,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:26:09,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:26:09,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:26:09,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:26:09,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:26:09,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:26:09,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:26:09,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:26:09,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:26:09,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:26:09,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:26:09,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:26:09,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:26:09,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:26:09,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:26:09,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:26:09,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:26:09,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:26:09,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:26:09,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:26:09,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:26:09,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:26:09,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:26:09,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:26:09,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:26:09,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:26:09,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:26:09,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:26:09,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:26:09,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:26:09,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:26:09,675 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:26:09,675 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:26:09,675 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:26:09,676 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:26:09,676 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:26:09,676 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:26:09,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:26:09,679 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:26:09,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:26:09,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:26:09,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:26:09,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:26:09,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:26:09,680 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:26:09,680 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:26:09,680 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:26:09,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:26:09,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:26:09,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:26:09,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:26:09,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:26:09,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:26:09,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:26:09,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:26:09,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:26:09,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:26:09,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:26:09,683 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:26:09,683 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:09,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:26:09,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:26:09,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:26:09,685 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2021-11-12 23:26:10,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:26:10,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:26:10,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:26:10,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:26:10,140 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:26:10,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/pthread/lazy01.i [2021-11-12 23:26:10,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/data/bf13b65fc/f239cf9998a84dfda1a0224a00e045a8/FLAG1c450a604 [2021-11-12 23:26:10,885 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:26:10,889 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/sv-benchmarks/c/pthread/lazy01.i [2021-11-12 23:26:10,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/data/bf13b65fc/f239cf9998a84dfda1a0224a00e045a8/FLAG1c450a604 [2021-11-12 23:26:11,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/data/bf13b65fc/f239cf9998a84dfda1a0224a00e045a8 [2021-11-12 23:26:11,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:26:11,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:26:11,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:26:11,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:26:11,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:26:11,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:26:11" (1/1) ... [2021-11-12 23:26:11,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d0f8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11, skipping insertion in model container [2021-11-12 23:26:11,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:26:11" (1/1) ... [2021-11-12 23:26:11,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:26:11,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:26:11,571 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2021-11-12 23:26:11,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:26:11,593 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:26:11,628 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2021-11-12 23:26:11,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:26:11,679 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:26:11,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11 WrapperNode [2021-11-12 23:26:11,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:26:11,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:26:11,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:26:11,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:26:11,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11" (1/1) ... [2021-11-12 23:26:11,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11" (1/1) ... [2021-11-12 23:26:11,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:26:11,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:26:11,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:26:11,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:26:11,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11" (1/1) ... [2021-11-12 23:26:11,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11" (1/1) ... [2021-11-12 23:26:11,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11" (1/1) ... [2021-11-12 23:26:11,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11" (1/1) ... [2021-11-12 23:26:11,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11" (1/1) ... [2021-11-12 23:26:11,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11" (1/1) ... [2021-11-12 23:26:11,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11" (1/1) ... [2021-11-12 23:26:11,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:26:11,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:26:11,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:26:11,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:26:11,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11" (1/1) ... [2021-11-12 23:26:11,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:26:11,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:26:11,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:26:11,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:26:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:26:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-12 23:26:11,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-12 23:26:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-12 23:26:11,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-12 23:26:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-12 23:26:11,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-12 23:26:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-12 23:26:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:26:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:26:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:26:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:26:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:26:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:26:11,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:26:11,884 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-12 23:26:12,372 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:26:12,372 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:26:12,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:26:12 BoogieIcfgContainer [2021-11-12 23:26:12,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:26:12,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:26:12,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:26:12,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:26:12,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:26:11" (1/3) ... [2021-11-12 23:26:12,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573fd0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:26:12, skipping insertion in model container [2021-11-12 23:26:12,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:11" (2/3) ... [2021-11-12 23:26:12,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573fd0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:26:12, skipping insertion in model container [2021-11-12 23:26:12,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:26:12" (3/3) ... [2021-11-12 23:26:12,391 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2021-11-12 23:26:12,396 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-12 23:26:12,396 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:26:12,397 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:26:12,397 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 23:26:12,457 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,458 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,458 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,459 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,459 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,459 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,460 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,460 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,461 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,466 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,467 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,468 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,468 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,469 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,469 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,469 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,469 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,470 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,470 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,471 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,471 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,472 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,473 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,473 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,473 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,478 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,478 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,479 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,479 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,479 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,479 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,480 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,480 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,480 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,480 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,481 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,481 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,481 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,482 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,483 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,483 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,484 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,484 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,484 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,484 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,485 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,485 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,485 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,486 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,486 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,487 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,487 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,487 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,492 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,493 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,493 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,493 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,493 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,500 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,500 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,500 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,501 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,501 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,504 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,505 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,505 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,506 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,506 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:26:12,516 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-12 23:26:12,580 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:26:12,594 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 [2021-11-12 23:26:12,594 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-12 23:26:12,613 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 23:26:12,630 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 91 transitions, 206 flow [2021-11-12 23:26:12,636 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 91 transitions, 206 flow [2021-11-12 23:26:12,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 91 transitions, 206 flow [2021-11-12 23:26:12,725 INFO L129 PetriNetUnfolder]: 1/88 cut-off events. [2021-11-12 23:26:12,725 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-12 23:26:12,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 1/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-11-12 23:26:12,739 INFO L116 LiptonReduction]: Number of co-enabled transitions 1114 [2021-11-12 23:26:21,008 INFO L131 LiptonReduction]: Checked pairs total: 2746 [2021-11-12 23:26:21,009 INFO L133 LiptonReduction]: Total number of compositions: 68 [2021-11-12 23:26:21,017 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 28 transitions, 80 flow [2021-11-12 23:26:21,046 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 202 states, 201 states have (on average 2.5671641791044775) internal successors, (516), 201 states have internal predecessors, (516), 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) [2021-11-12 23:26:21,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 201 states have (on average 2.5671641791044775) internal successors, (516), 201 states have internal predecessors, (516), 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) [2021-11-12 23:26:21,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:26:21,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:21,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:21,064 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:26:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash -201447838, now seen corresponding path program 1 times [2021-11-12 23:26:21,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:21,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84825074] [2021-11-12 23:26:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:21,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:21,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:21,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:21,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:26:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:21,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:26:21,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:21,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:21,375 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:21,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84825074] [2021-11-12 23:26:21,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84825074] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:21,376 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:21,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-12 23:26:21,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231874848] [2021-11-12 23:26:21,392 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:21,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:26:21,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:21,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:26:21,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:26:21,439 INFO L87 Difference]: Start difference. First operand has 202 states, 201 states have (on average 2.5671641791044775) internal successors, (516), 201 states have internal predecessors, (516), 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 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:26:21,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:21,582 INFO L93 Difference]: Finished difference Result 178 states and 438 transitions. [2021-11-12 23:26:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:26:21,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:26:21,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:21,596 INFO L225 Difference]: With dead ends: 178 [2021-11-12 23:26:21,596 INFO L226 Difference]: Without dead ends: 178 [2021-11-12 23:26:21,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:26:21,606 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:21,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 114.46ms Time] [2021-11-12 23:26:21,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-12 23:26:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-11-12 23:26:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.4745762711864407) internal successors, (438), 177 states have internal predecessors, (438), 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) [2021-11-12 23:26:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 438 transitions. [2021-11-12 23:26:21,687 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 438 transitions. Word has length 8 [2021-11-12 23:26:21,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:21,688 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 438 transitions. [2021-11-12 23:26:21,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:26:21,689 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 438 transitions. [2021-11-12 23:26:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:26:21,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:21,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:21,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:26:21,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:21,911 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:26:21,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:21,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1263588647, now seen corresponding path program 1 times [2021-11-12 23:26:21,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:21,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37318340] [2021-11-12 23:26:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:21,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:21,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:21,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:21,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:26:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:22,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:26:22,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:22,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-12 23:26:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:22,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:22,167 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:22,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37318340] [2021-11-12 23:26:22,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37318340] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:22,167 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:22,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:26:22,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602009991] [2021-11-12 23:26:22,168 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:22,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:26:22,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:26:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:26:22,170 INFO L87 Difference]: Start difference. First operand 178 states and 438 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:26:22,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:22,295 INFO L93 Difference]: Finished difference Result 102 states and 176 transitions. [2021-11-12 23:26:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:26:22,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 23:26:22,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:22,297 INFO L225 Difference]: With dead ends: 102 [2021-11-12 23:26:22,297 INFO L226 Difference]: Without dead ends: 98 [2021-11-12 23:26:22,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:26:22,299 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 13 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.68ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 118.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:22,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1 Invalid, 45 Unknown, 0 Unchecked, 0.68ms Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 118.08ms Time] [2021-11-12 23:26:22,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-12 23:26:22,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-11-12 23:26:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 96 states have (on average 1.7708333333333333) internal successors, (170), 97 states have internal predecessors, (170), 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) [2021-11-12 23:26:22,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 170 transitions. [2021-11-12 23:26:22,308 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 170 transitions. Word has length 11 [2021-11-12 23:26:22,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:22,308 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 170 transitions. [2021-11-12 23:26:22,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:26:22,308 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 170 transitions. [2021-11-12 23:26:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:26:22,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:22,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:22,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 23:26:22,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:22,522 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:26:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash 161479490, now seen corresponding path program 1 times [2021-11-12 23:26:22,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:22,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268427214] [2021-11-12 23:26:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:22,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:22,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:22,525 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:22,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:26:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:22,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:26:22,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:22,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:22,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:22,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268427214] [2021-11-12 23:26:22,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268427214] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:22,811 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:22,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-12 23:26:22,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446863569] [2021-11-12 23:26:22,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:22,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:26:22,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:22,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:26:22,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:26:22,813 INFO L87 Difference]: Start difference. First operand 98 states and 170 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-11-12 23:26:23,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:23,075 INFO L93 Difference]: Finished difference Result 94 states and 163 transitions. [2021-11-12 23:26:23,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:26:23,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 [2021-11-12 23:26:23,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:23,077 INFO L225 Difference]: With dead ends: 94 [2021-11-12 23:26:23,077 INFO L226 Difference]: Without dead ends: 90 [2021-11-12 23:26:23,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:26:23,079 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.97ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 241.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:23,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 128 Unknown, 0 Unchecked, 1.97ms Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 241.63ms Time] [2021-11-12 23:26:23,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-12 23:26:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-11-12 23:26:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.752808988764045) internal successors, (156), 89 states have internal predecessors, (156), 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) [2021-11-12 23:26:23,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 156 transitions. [2021-11-12 23:26:23,086 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 156 transitions. Word has length 12 [2021-11-12 23:26:23,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:23,087 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 156 transitions. [2021-11-12 23:26:23,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-11-12 23:26:23,087 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 156 transitions. [2021-11-12 23:26:23,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 23:26:23,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:23,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:23,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:23,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:23,289 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:26:23,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:23,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2012268733, now seen corresponding path program 1 times [2021-11-12 23:26:23,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:23,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954765181] [2021-11-12 23:26:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:23,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:23,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:23,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:23,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:26:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:26:23,395 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:26:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:26:23,514 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:26:23,515 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:26:23,515 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-11-12 23:26:23,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-12 23:26:23,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 5 remaining) [2021-11-12 23:26:23,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 5 remaining) [2021-11-12 23:26:23,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 5 remaining) [2021-11-12 23:26:23,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:23,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:23,734 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-12 23:26:23,739 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-12 23:26:23,739 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:26:23,781 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:26:23,783 INFO L158 Benchmark]: Toolchain (without parser) took 12647.20ms. Allocated memory was 60.8MB in the beginning and 104.9MB in the end (delta: 44.0MB). Free memory was 39.6MB in the beginning and 53.9MB in the end (delta: -14.3MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2021-11-12 23:26:23,783 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 60.8MB. Free memory is still 42.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:26:23,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.59ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 33.6MB in the end (delta: 5.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:26:23,784 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.23ms. Allocated memory is still 60.8MB. Free memory was 33.4MB in the beginning and 31.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:26:23,784 INFO L158 Benchmark]: Boogie Preprocessor took 59.59ms. Allocated memory is still 60.8MB. Free memory was 31.3MB in the beginning and 29.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:26:23,785 INFO L158 Benchmark]: RCFGBuilder took 582.04ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 29.6MB in the beginning and 58.7MB in the end (delta: -29.1MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-11-12 23:26:23,785 INFO L158 Benchmark]: TraceAbstraction took 11399.77ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 58.4MB in the beginning and 53.9MB in the end (delta: 4.5MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2021-11-12 23:26:23,788 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 60.8MB. Free memory is still 42.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 543.59ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 33.6MB in the end (delta: 5.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.23ms. Allocated memory is still 60.8MB. Free memory was 33.4MB in the beginning and 31.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.59ms. Allocated memory is still 60.8MB. Free memory was 31.3MB in the beginning and 29.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 582.04ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 29.6MB in the beginning and 58.7MB in the end (delta: -29.1MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * TraceAbstraction took 11399.77ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 58.4MB in the beginning and 53.9MB in the end (delta: 4.5MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.4s, 100 PlacesBefore, 37 PlacesAfterwards, 91 TransitionsBefore, 28 TransitionsAfterwards, 1114 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 68 TotalNumberOfCompositions, 2746 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1443, positive: 1332, positive conditional: 0, positive unconditional: 1332, negative: 111, negative conditional: 0, negative unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 761, positive: 733, positive conditional: 0, positive unconditional: 733, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 761, positive: 711, positive conditional: 0, positive unconditional: 711, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 194, positive: 64, positive conditional: 0, positive unconditional: 64, negative: 131, negative conditional: 0, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1443, positive: 599, positive conditional: 0, positive unconditional: 599, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 761, unknown conditional: 0, unknown unconditional: 761] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 85, Positive conditional cache size: 0, Positive unconditional cache size: 85, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:26:23,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c50fd3-f8d0-4596-8605-fc2f0bc2e2a5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null