./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs --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 95e7e09f708be8adbfa0d62c62d512d96f598196 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:08:57,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:08:57,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:08:57,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:08:57,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:08:57,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:08:57,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:08:57,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:08:57,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:08:57,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:08:57,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:08:57,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:08:57,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:08:57,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:08:57,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:08:57,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:08:57,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:08:57,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:08:57,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:08:57,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:08:57,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:08:57,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:08:57,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:08:57,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:08:57,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:08:57,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:08:57,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:08:57,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:08:57,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:08:57,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:08:57,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:08:57,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:08:57,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:08:57,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:08:57,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:08:57,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:08:57,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:08:57,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:08:57,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:08:57,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:08:57,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:08:57,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:08:57,587 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:08:57,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:08:57,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:08:57,589 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:08:57,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:08:57,590 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:08:57,590 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:08:57,590 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:08:57,599 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:08:57,599 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:08:57,600 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:08:57,601 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:08:57,601 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:08:57,601 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:08:57,602 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:08:57,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:08:57,603 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:08:57,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:08:57,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:08:57,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:08:57,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:08:57,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:08:57,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:08:57,605 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:08:57,605 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:08:57,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:08:57,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:08:57,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:08:57,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:08:57,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:08:57,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:08:57,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:08:57,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:08:57,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:08:57,610 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:08:57,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:08:57,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:08:57,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:08:57,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:08:57,611 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_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95e7e09f708be8adbfa0d62c62d512d96f598196 [2021-10-16 03:08:58,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:08:58,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:08:58,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:08:58,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:08:58,044 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:08:58,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-16 03:08:58,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/data/8acd9b856/f5fc059454b9478f90d06070925bbe24/FLAG5eb6477cb [2021-10-16 03:08:58,841 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:08:58,846 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-16 03:08:58,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/data/8acd9b856/f5fc059454b9478f90d06070925bbe24/FLAG5eb6477cb [2021-10-16 03:08:59,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/data/8acd9b856/f5fc059454b9478f90d06070925bbe24 [2021-10-16 03:08:59,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:08:59,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:08:59,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:08:59,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:08:59,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:08:59,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:08:59" (1/1) ... [2021-10-16 03:08:59,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d350f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59, skipping insertion in model container [2021-10-16 03:08:59,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:08:59" (1/1) ... [2021-10-16 03:08:59,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:08:59,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:08:59,403 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_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-16 03:08:59,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:08:59,629 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:08:59,645 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_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-16 03:08:59,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:08:59,741 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:08:59,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59 WrapperNode [2021-10-16 03:08:59,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:08:59,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:08:59,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:08:59,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:08:59,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59" (1/1) ... [2021-10-16 03:08:59,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59" (1/1) ... [2021-10-16 03:08:59,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:08:59,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:08:59,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:08:59,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:08:59,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59" (1/1) ... [2021-10-16 03:08:59,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59" (1/1) ... [2021-10-16 03:08:59,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59" (1/1) ... [2021-10-16 03:08:59,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59" (1/1) ... [2021-10-16 03:08:59,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59" (1/1) ... [2021-10-16 03:08:59,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59" (1/1) ... [2021-10-16 03:08:59,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59" (1/1) ... [2021-10-16 03:08:59,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:08:59,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:08:59,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:08:59,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:08:59,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59" (1/1) ... [2021-10-16 03:08:59,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:08:59,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:08:59,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:08:59,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:08:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:08:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-16 03:08:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:08:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:08:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-16 03:08:59,944 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-16 03:08:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-16 03:08:59,945 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-16 03:08:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-16 03:08:59,945 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-16 03:08:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:08:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-16 03:08:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:08:59,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:08:59,948 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-16 03:09:00,434 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:09:00,445 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-16 03:09:00,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:09:00 BoogieIcfgContainer [2021-10-16 03:09:00,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:09:00,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:09:00,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:09:00,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:09:00,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:08:59" (1/3) ... [2021-10-16 03:09:00,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e302e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:09:00, skipping insertion in model container [2021-10-16 03:09:00,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:59" (2/3) ... [2021-10-16 03:09:00,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e302e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:09:00, skipping insertion in model container [2021-10-16 03:09:00,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:09:00" (3/3) ... [2021-10-16 03:09:00,464 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-16 03:09:00,478 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-16 03:09:00,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:09:00,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:09:00,479 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-16 03:09:00,541 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,542 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,542 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,542 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,543 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,543 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,543 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,543 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,544 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,544 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,547 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,547 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,548 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,548 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,561 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,563 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,563 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,564 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,564 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,572 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,583 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,583 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,591 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,593 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:09:00,599 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-16 03:09:00,676 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:09:00,687 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:09:00,687 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 03:09:00,729 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-16 03:09:00,744 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-16 03:09:00,755 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-16 03:09:00,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-10-16 03:09:00,885 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-10-16 03:09:00,885 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-16 03:09:00,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-16 03:09:00,897 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2021-10-16 03:09:05,038 INFO L131 LiptonReduction]: Checked pairs total: 2368 [2021-10-16 03:09:05,039 INFO L133 LiptonReduction]: Total number of compositions: 73 [2021-10-16 03:09:05,049 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2021-10-16 03:09:05,087 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 178 states, 177 states have (on average 2.7231638418079096) internal successors, (482), 177 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:05,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 177 states have (on average 2.7231638418079096) internal successors, (482), 177 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:09:05,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:05,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:05,113 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:05,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:05,120 INFO L82 PathProgramCache]: Analyzing trace with hash -310839676, now seen corresponding path program 1 times [2021-10-16 03:09:05,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:05,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593806275] [2021-10-16 03:09:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:05,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:05,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:05,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593806275] [2021-10-16 03:09:05,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593806275] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:05,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:05,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 03:09:05,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501088501] [2021-10-16 03:09:05,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:09:05,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:09:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:09:05,536 INFO L87 Difference]: Start difference. First operand has 178 states, 177 states have (on average 2.7231638418079096) internal successors, (482), 177 states have internal predecessors, (482), 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) [2021-10-16 03:09:05,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:05,605 INFO L93 Difference]: Finished difference Result 166 states and 441 transitions. [2021-10-16 03:09:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:09:05,608 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 [2021-10-16 03:09:05,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:05,632 INFO L225 Difference]: With dead ends: 166 [2021-10-16 03:09:05,634 INFO L226 Difference]: Without dead ends: 166 [2021-10-16 03:09:05,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:09:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-16 03:09:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-10-16 03:09:05,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.672727272727273) internal successors, (441), 165 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2021-10-16 03:09:05,728 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2021-10-16 03:09:05,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:05,730 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2021-10-16 03:09:05,730 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) [2021-10-16 03:09:05,730 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2021-10-16 03:09:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:09:05,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:05,735 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:05,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:09:05,736 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:05,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:05,738 INFO L82 PathProgramCache]: Analyzing trace with hash -515150132, now seen corresponding path program 1 times [2021-10-16 03:09:05,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:05,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670332777] [2021-10-16 03:09:05,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:05,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:05,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:05,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670332777] [2021-10-16 03:09:05,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670332777] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:05,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:05,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:09:05,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370676] [2021-10-16 03:09:05,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:05,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:05,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:05,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:05,891 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:05,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:05,922 INFO L93 Difference]: Finished difference Result 184 states and 465 transitions. [2021-10-16 03:09:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:05,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 03:09:05,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:05,925 INFO L225 Difference]: With dead ends: 184 [2021-10-16 03:09:05,925 INFO L226 Difference]: Without dead ends: 88 [2021-10-16 03:09:05,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:09:05,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-16 03:09:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-16 03:09:05,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.3793103448275863) internal successors, (207), 87 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 207 transitions. [2021-10-16 03:09:05,939 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 207 transitions. Word has length 9 [2021-10-16 03:09:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:05,940 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 207 transitions. [2021-10-16 03:09:05,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 207 transitions. [2021-10-16 03:09:05,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:09:05,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:05,942 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:05,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:09:05,943 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:05,943 INFO L82 PathProgramCache]: Analyzing trace with hash -277019481, now seen corresponding path program 1 times [2021-10-16 03:09:05,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:05,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798053535] [2021-10-16 03:09:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:05,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:06,101 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:06,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798053535] [2021-10-16 03:09:06,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798053535] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:06,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:06,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:09:06,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873949977] [2021-10-16 03:09:06,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:09:06,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:06,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:09:06,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:09:06,105 INFO L87 Difference]: Start difference. First operand 88 states and 207 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:06,141 INFO L93 Difference]: Finished difference Result 118 states and 268 transitions. [2021-10-16 03:09:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:06,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 03:09:06,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:06,143 INFO L225 Difference]: With dead ends: 118 [2021-10-16 03:09:06,149 INFO L226 Difference]: Without dead ends: 64 [2021-10-16 03:09:06,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:09:06,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-16 03:09:06,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-16 03:09:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 63 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2021-10-16 03:09:06,174 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2021-10-16 03:09:06,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:06,175 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2021-10-16 03:09:06,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,175 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2021-10-16 03:09:06,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 03:09:06,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:06,177 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:06,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 03:09:06,177 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:06,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:06,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1298481685, now seen corresponding path program 1 times [2021-10-16 03:09:06,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:06,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249744862] [2021-10-16 03:09:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:06,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:06,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:06,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249744862] [2021-10-16 03:09:06,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249744862] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:06,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:06,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:09:06,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270479657] [2021-10-16 03:09:06,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:06,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:06,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:06,376 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:06,421 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2021-10-16 03:09:06,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:06,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-16 03:09:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:06,424 INFO L225 Difference]: With dead ends: 77 [2021-10-16 03:09:06,425 INFO L226 Difference]: Without dead ends: 56 [2021-10-16 03:09:06,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:09:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-16 03:09:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-16 03:09:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2021-10-16 03:09:06,439 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2021-10-16 03:09:06,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:06,440 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2021-10-16 03:09:06,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,441 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2021-10-16 03:09:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 03:09:06,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:06,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:06,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 03:09:06,444 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:06,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:06,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1593223979, now seen corresponding path program 1 times [2021-10-16 03:09:06,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:06,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726947434] [2021-10-16 03:09:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:06,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:06,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:06,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726947434] [2021-10-16 03:09:06,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726947434] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:06,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:06,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:09:06,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138846552] [2021-10-16 03:09:06,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:09:06,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:06,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:09:06,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:09:06,577 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:06,626 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2021-10-16 03:09:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:09:06,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 03:09:06,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:06,629 INFO L225 Difference]: With dead ends: 57 [2021-10-16 03:09:06,630 INFO L226 Difference]: Without dead ends: 42 [2021-10-16 03:09:06,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:09:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-16 03:09:06,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-16 03:09:06,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 41 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2021-10-16 03:09:06,649 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2021-10-16 03:09:06,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:06,650 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2021-10-16 03:09:06,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,650 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2021-10-16 03:09:06,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 03:09:06,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:06,652 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:06,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 03:09:06,653 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:06,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:06,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1250094408, now seen corresponding path program 1 times [2021-10-16 03:09:06,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:06,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761285828] [2021-10-16 03:09:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:06,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:06,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:06,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761285828] [2021-10-16 03:09:06,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761285828] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:06,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:06,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:09:06,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606198673] [2021-10-16 03:09:06,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:09:06,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:06,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:09:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:09:06,852 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:06,926 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2021-10-16 03:09:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:09:06,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-16 03:09:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:06,928 INFO L225 Difference]: With dead ends: 39 [2021-10-16 03:09:06,928 INFO L226 Difference]: Without dead ends: 33 [2021-10-16 03:09:06,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:06,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-16 03:09:06,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-16 03:09:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2021-10-16 03:09:06,935 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2021-10-16 03:09:06,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:06,936 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2021-10-16 03:09:06,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,937 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2021-10-16 03:09:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 03:09:06,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:06,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:06,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 03:09:06,944 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:06,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:06,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1251829557, now seen corresponding path program 1 times [2021-10-16 03:09:06,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:06,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33888035] [2021-10-16 03:09:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:06,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:07,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:07,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33888035] [2021-10-16 03:09:07,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33888035] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:07,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:07,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:09:07,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959553764] [2021-10-16 03:09:07,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:07,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:07,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:07,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:07,060 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:07,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:07,079 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2021-10-16 03:09:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:09:07,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-16 03:09:07,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:07,087 INFO L225 Difference]: With dead ends: 32 [2021-10-16 03:09:07,087 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:09:07,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:09:07,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:09:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:09:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:09:07,092 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-16 03:09:07,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:07,093 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:09:07,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:09:07,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:09:07,097 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:09:07,098 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-16 03:09:07,098 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-16 03:09:07,099 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-16 03:09:07,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 03:09:07,104 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-16 03:09:07,104 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:09:07,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:09:07 BasicIcfg [2021-10-16 03:09:07,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:09:07,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:09:07,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:09:07,109 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:09:07,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:09:00" (3/4) ... [2021-10-16 03:09:07,113 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:09:07,121 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-16 03:09:07,121 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-16 03:09:07,121 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-16 03:09:07,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-16 03:09:07,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 03:09:07,131 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:09:07,131 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:09:07,192 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:09:07,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:09:07,199 INFO L168 Benchmark]: Toolchain (without parser) took 8150.89 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 53.0 MB in the beginning and 72.0 MB in the end (delta: -18.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:09:07,199 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory was 70.6 MB in the beginning and 70.6 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:09:07,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.20 ms. Allocated memory is still 96.5 MB. Free memory was 52.8 MB in the beginning and 60.8 MB in the end (delta: -8.0 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:07,200 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.77 ms. Allocated memory is still 96.5 MB. Free memory was 60.8 MB in the beginning and 58.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:07,200 INFO L168 Benchmark]: Boogie Preprocessor took 31.81 ms. Allocated memory is still 96.5 MB. Free memory was 58.8 MB in the beginning and 57.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:09:07,200 INFO L168 Benchmark]: RCFGBuilder took 617.98 ms. Allocated memory is still 96.5 MB. Free memory was 57.3 MB in the beginning and 44.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:07,201 INFO L168 Benchmark]: TraceAbstraction took 6656.67 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 44.2 MB in the beginning and 75.1 MB in the end (delta: -30.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:09:07,201 INFO L168 Benchmark]: Witness Printer took 88.66 ms. Allocated memory is still 117.4 MB. Free memory was 75.1 MB in the beginning and 72.0 MB in the end (delta: 3.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:09:07,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory was 70.6 MB in the beginning and 70.6 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 693.20 ms. Allocated memory is still 96.5 MB. Free memory was 52.8 MB in the beginning and 60.8 MB in the end (delta: -8.0 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.77 ms. Allocated memory is still 96.5 MB. Free memory was 60.8 MB in the beginning and 58.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.81 ms. Allocated memory is still 96.5 MB. Free memory was 58.8 MB in the beginning and 57.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 617.98 ms. Allocated memory is still 96.5 MB. Free memory was 57.3 MB in the beginning and 44.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6656.67 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 44.2 MB in the beginning and 75.1 MB in the end (delta: -30.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 88.66 ms. Allocated memory is still 117.4 MB. Free memory was 75.1 MB in the beginning and 72.0 MB in the end (delta: 3.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4284.1ms, 91 PlacesBefore, 30 PlacesAfterwards, 83 TransitionsBefore, 20 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2368 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1270, positive: 1188, positive conditional: 0, positive unconditional: 1188, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 885, positive: 849, positive conditional: 0, positive unconditional: 849, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 885, positive: 847, positive conditional: 0, positive unconditional: 847, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 118, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 109, negative conditional: 0, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1270, positive: 339, positive conditional: 0, positive unconditional: 339, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 885, unknown conditional: 0, unknown unconditional: 885] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6429.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 33.4ms, AutomataDifference: 421.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4406.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 97 SDtfs, 149 SDslu, 97 SDs, 0 SdLazy, 66 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 154.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 147.1ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.0ms SsaConstructionTime, 385.1ms SatisfiabilityAnalysisTime, 672.1ms InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 296 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-16 03:09:07,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2d84e6-e6cc-4e6d-84cc-ecd5cae4ee38/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...