./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 4c3aab1156afcb98b97b027e9b66004d54025f3b89e95d6d35dc2e84fdb640d2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:32:00,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:32:00,430 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:32:00,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:32:00,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:32:00,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:32:00,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:32:00,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:32:00,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:32:00,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:32:00,477 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:32:00,477 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:32:00,477 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:32:00,478 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:32:00,479 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:32:00,481 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:32:00,481 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:32:00,482 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:32:00,482 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:32:00,482 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:32:00,483 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:32:00,487 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:32:00,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:32:00,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:32:00,488 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:32:00,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:32:00,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:32:00,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:32:00,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:32:00,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:32:00,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:32:00,489 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:32:00,489 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:32:00,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:32:00,490 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:32:00,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:32:00,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:32:00,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:32:00,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:32:00,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:32:00,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:32:00,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:32:00,494 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:32:00,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:32:00,494 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:32:00,495 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:32:00,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:32:00,495 INFO L153 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_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c3aab1156afcb98b97b027e9b66004d54025f3b89e95d6d35dc2e84fdb640d2 [2024-11-02 12:32:00,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:32:00,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:32:00,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:32:00,861 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:32:00,865 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:32:00,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c Unable to find full path for "g++" [2024-11-02 12:32:03,175 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:32:03,470 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:32:03,471 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2024-11-02 12:32:03,493 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/data/a0ec27caa/32637f5ed89d4c569399e40dafe30404/FLAGb4a80e06d [2024-11-02 12:32:03,511 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/data/a0ec27caa/32637f5ed89d4c569399e40dafe30404 [2024-11-02 12:32:03,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:32:03,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:32:03,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:32:03,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:32:03,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:32:03,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:32:03" (1/1) ... [2024-11-02 12:32:03,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433a048a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:03, skipping insertion in model container [2024-11-02 12:32:03,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:32:03" (1/1) ... [2024-11-02 12:32:03,578 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:32:03,781 WARN L251 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_b7e8c050-805b-405e-a629-5c322737f4b1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c[914,927] [2024-11-02 12:32:03,856 WARN L251 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_b7e8c050-805b-405e-a629-5c322737f4b1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c[7115,7128] [2024-11-02 12:32:03,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:32:03,955 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:32:03,966 WARN L251 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_b7e8c050-805b-405e-a629-5c322737f4b1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c[914,927] [2024-11-02 12:32:03,988 WARN L251 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_b7e8c050-805b-405e-a629-5c322737f4b1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c[7115,7128] [2024-11-02 12:32:04,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:32:04,051 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:32:04,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04 WrapperNode [2024-11-02 12:32:04,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:32:04,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:32:04,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:32:04,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:32:04,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04" (1/1) ... [2024-11-02 12:32:04,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04" (1/1) ... [2024-11-02 12:32:04,113 INFO L138 Inliner]: procedures = 59, calls = 66, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 528 [2024-11-02 12:32:04,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:32:04,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:32:04,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:32:04,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:32:04,128 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04" (1/1) ... [2024-11-02 12:32:04,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04" (1/1) ... [2024-11-02 12:32:04,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04" (1/1) ... [2024-11-02 12:32:04,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04" (1/1) ... [2024-11-02 12:32:04,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04" (1/1) ... [2024-11-02 12:32:04,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04" (1/1) ... [2024-11-02 12:32:04,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04" (1/1) ... [2024-11-02 12:32:04,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04" (1/1) ... [2024-11-02 12:32:04,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:32:04,174 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:32:04,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:32:04,174 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:32:04,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04" (1/1) ... [2024-11-02 12:32:04,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:32:04,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:32:04,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:32:04,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:32:04,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:32:04,267 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-02 12:32:04,267 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-02 12:32:04,267 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-02 12:32:04,267 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-02 12:32:04,267 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-02 12:32:04,267 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-02 12:32:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-02 12:32:04,268 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-02 12:32:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-02 12:32:04,268 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-02 12:32:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-02 12:32:04,268 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-02 12:32:04,269 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-02 12:32:04,269 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-02 12:32:04,269 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-02 12:32:04,270 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-02 12:32:04,270 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-02 12:32:04,271 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-02 12:32:04,271 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-02 12:32:04,271 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-02 12:32:04,271 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-02 12:32:04,271 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-02 12:32:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:32:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-02 12:32:04,272 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-02 12:32:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-02 12:32:04,273 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-02 12:32:04,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:32:04,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:32:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-02 12:32:04,274 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-02 12:32:04,413 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:32:04,416 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:32:05,216 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-11-02 12:32:05,216 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:32:05,563 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:32:05,563 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-02 12:32:05,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:32:05 BoogieIcfgContainer [2024-11-02 12:32:05,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:32:05,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:32:05,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:32:05,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:32:05,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:32:03" (1/3) ... [2024-11-02 12:32:05,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edd1428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:32:05, skipping insertion in model container [2024-11-02 12:32:05,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:04" (2/3) ... [2024-11-02 12:32:05,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edd1428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:32:05, skipping insertion in model container [2024-11-02 12:32:05,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:32:05" (3/3) ... [2024-11-02 12:32:05,578 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2024-11-02 12:32:05,598 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:32:05,598 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-02 12:32:05,697 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:32:05,707 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@553858aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:32:05,708 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-02 12:32:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 117 states have (on average 1.4786324786324787) internal successors, (173), 123 states have internal predecessors, (173), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-02 12:32:05,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-02 12:32:05,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:05,730 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:32:05,731 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:05,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:05,738 INFO L85 PathProgramCache]: Analyzing trace with hash 355836622, now seen corresponding path program 1 times [2024-11-02 12:32:05,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:05,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875044799] [2024-11-02 12:32:05,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:05,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:06,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:06,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875044799] [2024-11-02 12:32:06,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875044799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:06,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:06,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:32:06,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556698076] [2024-11-02 12:32:06,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:06,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:32:06,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:06,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:32:06,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:32:06,441 INFO L87 Difference]: Start difference. First operand has 165 states, 117 states have (on average 1.4786324786324787) internal successors, (173), 123 states have internal predecessors, (173), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:07,564 INFO L93 Difference]: Finished difference Result 647 states and 962 transitions. [2024-11-02 12:32:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:32:07,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-11-02 12:32:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:07,589 INFO L225 Difference]: With dead ends: 647 [2024-11-02 12:32:07,590 INFO L226 Difference]: Without dead ends: 477 [2024-11-02 12:32:07,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:32:07,601 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 650 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:07,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 617 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-02 12:32:07,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-02 12:32:07,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 466. [2024-11-02 12:32:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 347 states have (on average 1.3861671469740633) internal successors, (481), 354 states have internal predecessors, (481), 80 states have call successors, (80), 38 states have call predecessors, (80), 37 states have return successors, (104), 75 states have call predecessors, (104), 78 states have call successors, (104) [2024-11-02 12:32:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 665 transitions. [2024-11-02 12:32:07,718 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 665 transitions. Word has length 40 [2024-11-02 12:32:07,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:07,720 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 665 transitions. [2024-11-02 12:32:07,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:07,721 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 665 transitions. [2024-11-02 12:32:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-02 12:32:07,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:07,726 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:32:07,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:32:07,727 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:07,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1233812994, now seen corresponding path program 1 times [2024-11-02 12:32:07,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:07,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008076726] [2024-11-02 12:32:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:07,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:07,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:07,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008076726] [2024-11-02 12:32:07,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008076726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:07,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:07,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:32:07,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581136755] [2024-11-02 12:32:07,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:07,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:32:07,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:07,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:32:07,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:32:07,919 INFO L87 Difference]: Start difference. First operand 466 states and 665 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 12:32:08,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:08,297 INFO L93 Difference]: Finished difference Result 590 states and 827 transitions. [2024-11-02 12:32:08,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:32:08,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2024-11-02 12:32:08,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:08,307 INFO L225 Difference]: With dead ends: 590 [2024-11-02 12:32:08,307 INFO L226 Difference]: Without dead ends: 526 [2024-11-02 12:32:08,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:32:08,313 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 275 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:08,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 398 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:32:08,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-02 12:32:08,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 519. [2024-11-02 12:32:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 385 states have (on average 1.3714285714285714) internal successors, (528), 392 states have internal predecessors, (528), 88 states have call successors, (88), 45 states have call predecessors, (88), 44 states have return successors, (112), 83 states have call predecessors, (112), 86 states have call successors, (112) [2024-11-02 12:32:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 728 transitions. [2024-11-02 12:32:08,409 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 728 transitions. Word has length 45 [2024-11-02 12:32:08,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:08,410 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 728 transitions. [2024-11-02 12:32:08,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 12:32:08,411 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 728 transitions. [2024-11-02 12:32:08,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-02 12:32:08,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:08,416 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:32:08,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:32:08,417 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:08,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:08,417 INFO L85 PathProgramCache]: Analyzing trace with hash -314838371, now seen corresponding path program 1 times [2024-11-02 12:32:08,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:08,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40014482] [2024-11-02 12:32:08,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:08,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:08,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:08,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40014482] [2024-11-02 12:32:08,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40014482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:08,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:08,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:32:08,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493380674] [2024-11-02 12:32:08,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:08,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:32:08,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:08,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:32:08,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:32:08,748 INFO L87 Difference]: Start difference. First operand 519 states and 728 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-02 12:32:09,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:09,581 INFO L93 Difference]: Finished difference Result 700 states and 949 transitions. [2024-11-02 12:32:09,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-02 12:32:09,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 45 [2024-11-02 12:32:09,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:09,587 INFO L225 Difference]: With dead ends: 700 [2024-11-02 12:32:09,587 INFO L226 Difference]: Without dead ends: 584 [2024-11-02 12:32:09,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:32:09,590 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 336 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:09,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 576 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:32:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-02 12:32:09,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 571. [2024-11-02 12:32:09,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 422 states have (on average 1.3625592417061612) internal successors, (575), 429 states have internal predecessors, (575), 96 states have call successors, (96), 52 states have call predecessors, (96), 51 states have return successors, (120), 91 states have call predecessors, (120), 94 states have call successors, (120) [2024-11-02 12:32:09,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 791 transitions. [2024-11-02 12:32:09,650 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 791 transitions. Word has length 45 [2024-11-02 12:32:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:09,651 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 791 transitions. [2024-11-02 12:32:09,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-02 12:32:09,652 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 791 transitions. [2024-11-02 12:32:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-02 12:32:09,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:09,653 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:32:09,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:32:09,654 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:09,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:09,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1318058654, now seen corresponding path program 1 times [2024-11-02 12:32:09,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:09,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381601721] [2024-11-02 12:32:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:09,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:09,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:09,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381601721] [2024-11-02 12:32:09,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381601721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:09,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:09,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:32:09,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9181507] [2024-11-02 12:32:09,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:09,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:32:09,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:09,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:32:09,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:32:09,759 INFO L87 Difference]: Start difference. First operand 571 states and 791 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:32:09,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:09,930 INFO L93 Difference]: Finished difference Result 899 states and 1197 transitions. [2024-11-02 12:32:09,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:32:09,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2024-11-02 12:32:09,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:09,936 INFO L225 Difference]: With dead ends: 899 [2024-11-02 12:32:09,936 INFO L226 Difference]: Without dead ends: 730 [2024-11-02 12:32:09,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:32:09,939 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 194 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:09,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 244 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:32:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-11-02 12:32:10,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 711. [2024-11-02 12:32:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 517 states have (on average 1.3249516441005802) internal successors, (685), 524 states have internal predecessors, (685), 120 states have call successors, (120), 73 states have call predecessors, (120), 72 states have return successors, (144), 115 states have call predecessors, (144), 118 states have call successors, (144) [2024-11-02 12:32:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 949 transitions. [2024-11-02 12:32:10,013 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 949 transitions. Word has length 46 [2024-11-02 12:32:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:10,014 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 949 transitions. [2024-11-02 12:32:10,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:32:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 949 transitions. [2024-11-02 12:32:10,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-02 12:32:10,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:10,016 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:32:10,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:32:10,017 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:10,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:10,017 INFO L85 PathProgramCache]: Analyzing trace with hash 315257465, now seen corresponding path program 1 times [2024-11-02 12:32:10,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:10,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112363298] [2024-11-02 12:32:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:10,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:10,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:10,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112363298] [2024-11-02 12:32:10,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112363298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:10,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:10,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:32:10,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26223571] [2024-11-02 12:32:10,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:10,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:32:10,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:10,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:32:10,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:32:10,106 INFO L87 Difference]: Start difference. First operand 711 states and 949 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:32:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:10,301 INFO L93 Difference]: Finished difference Result 1081 states and 1394 transitions. [2024-11-02 12:32:10,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:32:10,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2024-11-02 12:32:10,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:10,307 INFO L225 Difference]: With dead ends: 1081 [2024-11-02 12:32:10,307 INFO L226 Difference]: Without dead ends: 818 [2024-11-02 12:32:10,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:32:10,310 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 67 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:10,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 349 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:32:10,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-11-02 12:32:10,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 812. [2024-11-02 12:32:10,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 588 states have (on average 1.314625850340136) internal successors, (773), 595 states have internal predecessors, (773), 136 states have call successors, (136), 87 states have call predecessors, (136), 86 states have return successors, (160), 131 states have call predecessors, (160), 134 states have call successors, (160) [2024-11-02 12:32:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1069 transitions. [2024-11-02 12:32:10,393 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1069 transitions. Word has length 47 [2024-11-02 12:32:10,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:10,394 INFO L471 AbstractCegarLoop]: Abstraction has 812 states and 1069 transitions. [2024-11-02 12:32:10,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:32:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1069 transitions. [2024-11-02 12:32:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-02 12:32:10,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:10,396 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:32:10,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:32:10,397 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:10,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2084524040, now seen corresponding path program 1 times [2024-11-02 12:32:10,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:10,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610272433] [2024-11-02 12:32:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:10,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:10,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:10,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610272433] [2024-11-02 12:32:10,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610272433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:10,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:10,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:32:10,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113735702] [2024-11-02 12:32:10,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:10,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:32:10,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:10,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:32:10,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:32:10,510 INFO L87 Difference]: Start difference. First operand 812 states and 1069 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-02 12:32:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:10,866 INFO L93 Difference]: Finished difference Result 919 states and 1195 transitions. [2024-11-02 12:32:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:32:10,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 54 [2024-11-02 12:32:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:10,872 INFO L225 Difference]: With dead ends: 919 [2024-11-02 12:32:10,872 INFO L226 Difference]: Without dead ends: 916 [2024-11-02 12:32:10,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:32:10,875 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 352 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:10,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 227 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:32:10,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-02 12:32:10,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 811. [2024-11-02 12:32:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 588 states have (on average 1.3095238095238095) internal successors, (770), 594 states have internal predecessors, (770), 135 states have call successors, (135), 87 states have call predecessors, (135), 86 states have return successors, (160), 131 states have call predecessors, (160), 134 states have call successors, (160) [2024-11-02 12:32:10,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1065 transitions. [2024-11-02 12:32:10,987 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1065 transitions. Word has length 54 [2024-11-02 12:32:10,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:10,988 INFO L471 AbstractCegarLoop]: Abstraction has 811 states and 1065 transitions. [2024-11-02 12:32:10,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-02 12:32:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1065 transitions. [2024-11-02 12:32:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-02 12:32:10,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:10,991 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:32:10,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:32:10,992 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:10,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:10,993 INFO L85 PathProgramCache]: Analyzing trace with hash -196513054, now seen corresponding path program 1 times [2024-11-02 12:32:10,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:10,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592163887] [2024-11-02 12:32:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:10,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:11,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:11,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592163887] [2024-11-02 12:32:11,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592163887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:32:11,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537667840] [2024-11-02 12:32:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:11,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:32:11,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:32:11,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:32:11,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e8c050-805b-405e-a629-5c322737f4b1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:32:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:11,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:32:11,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:32:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:11,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:32:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:11,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537667840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:32:11,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1898337828] [2024-11-02 12:32:11,804 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2024-11-02 12:32:11,804 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:32:11,808 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:32:11,815 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:32:11,815 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:32:15,326 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events1 with input of size 121 for LOIs [2024-11-02 12:32:15,383 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread1 with input of size 117 for LOIs [2024-11-02 12:32:15,438 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads1 with input of size 125 for LOIs [2024-11-02 12:32:16,257 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 121 for LOIs [2024-11-02 12:32:16,399 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 121 for LOIs [2024-11-02 12:32:16,549 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events1 with input of size 121 for LOIs [2024-11-02 12:32:16,603 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels1 with input of size 128 for LOIs [2024-11-02 12:32:16,659 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:32:27,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1898337828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:27,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:32:27,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [5, 5, 4] total 36 [2024-11-02 12:32:27,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487766657] [2024-11-02 12:32:27,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:27,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-02 12:32:27,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:27,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-02 12:32:27,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2024-11-02 12:32:27,074 INFO L87 Difference]: Start difference. First operand 811 states and 1065 transitions. Second operand has 31 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 7 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7)