./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ --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 eeee6bfce8612e4c7a8797e69f7e2696f4f49417b2ea41e83d66cf7e8ad61db4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:16:35,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:16:35,680 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:16:35,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:16:35,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:16:35,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:16:35,727 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:16:35,727 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:16:35,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:16:35,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:16:35,734 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:16:35,735 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:16:35,736 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:16:35,738 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:16:35,738 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:16:35,739 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:16:35,739 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:16:35,740 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:16:35,740 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:16:35,741 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:16:35,742 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:16:35,743 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:16:35,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:16:35,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:16:35,745 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:16:35,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:16:35,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:16:35,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:16:35,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:16:35,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:16:35,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:16:35,750 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:16:35,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:16:35,750 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:16:35,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:16:35,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:16:35,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:16:35,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:16:35,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:16:35,752 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:16:35,753 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:16:35,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:16:35,754 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:16:35,754 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:16:35,755 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:16:35,755 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_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eeee6bfce8612e4c7a8797e69f7e2696f4f49417b2ea41e83d66cf7e8ad61db4 [2023-11-19 05:16:36,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:16:36,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:16:36,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:16:36,113 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:16:36,114 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:16:36,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c [2023-11-19 05:16:39,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:16:40,248 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:16:40,249 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c [2023-11-19 05:16:40,335 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/data/7231ff000/e5c81a74427a422fb675e65bfd0787b2/FLAG80615c862 [2023-11-19 05:16:40,356 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/data/7231ff000/e5c81a74427a422fb675e65bfd0787b2 [2023-11-19 05:16:40,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:16:40,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:16:40,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:16:40,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:16:40,378 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:16:40,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:40" (1/1) ... [2023-11-19 05:16:40,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1b340a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:40, skipping insertion in model container [2023-11-19 05:16:40,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:40" (1/1) ... [2023-11-19 05:16:40,805 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:16:43,280 WARN L240 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_eee1b45d-8364-432d-abc7-225ef53a3259/sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c[380593,380606] [2023-11-19 05:16:43,313 WARN L240 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_eee1b45d-8364-432d-abc7-225ef53a3259/sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c[383339,383352] [2023-11-19 05:16:43,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:16:43,494 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:16:44,869 WARN L240 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_eee1b45d-8364-432d-abc7-225ef53a3259/sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c[380593,380606] [2023-11-19 05:16:44,877 WARN L240 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_eee1b45d-8364-432d-abc7-225ef53a3259/sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c[383339,383352] [2023-11-19 05:16:44,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:16:44,993 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:16:44,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44 WrapperNode [2023-11-19 05:16:44,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:16:44,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:16:44,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:16:44,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:16:45,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44" (1/1) ... [2023-11-19 05:16:45,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44" (1/1) ... [2023-11-19 05:16:45,608 INFO L138 Inliner]: procedures = 46, calls = 45, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 12574 [2023-11-19 05:16:45,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:16:45,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:16:45,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:16:45,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:16:45,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44" (1/1) ... [2023-11-19 05:16:45,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44" (1/1) ... [2023-11-19 05:16:45,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44" (1/1) ... [2023-11-19 05:16:45,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44" (1/1) ... [2023-11-19 05:16:45,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44" (1/1) ... [2023-11-19 05:16:46,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44" (1/1) ... [2023-11-19 05:16:46,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44" (1/1) ... [2023-11-19 05:16:46,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44" (1/1) ... [2023-11-19 05:16:46,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:16:46,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:16:46,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:16:46,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:16:46,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44" (1/1) ... [2023-11-19 05:16:46,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:16:46,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:46,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:16:46,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:16:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:16:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-19 05:16:46,328 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-19 05:16:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-19 05:16:46,330 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-19 05:16:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-19 05:16:46,331 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-19 05:16:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-19 05:16:46,331 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-19 05:16:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-19 05:16:46,332 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-19 05:16:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-19 05:16:46,332 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-19 05:16:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:16:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-19 05:16:46,333 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-19 05:16:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:16:46,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:16:46,486 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:16:46,491 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:16:57,189 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:16:59,502 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:16:59,502 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-19 05:16:59,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:59 BoogieIcfgContainer [2023-11-19 05:16:59,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:16:59,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:16:59,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:16:59,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:16:59,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:16:40" (1/3) ... [2023-11-19 05:16:59,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d35af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:59, skipping insertion in model container [2023-11-19 05:16:59,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:44" (2/3) ... [2023-11-19 05:16:59,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d35af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:59, skipping insertion in model container [2023-11-19 05:16:59,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:59" (3/3) ... [2023-11-19 05:16:59,533 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.01.cil-2.c [2023-11-19 05:16:59,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:16:59,556 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:16:59,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:16:59,679 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@45ddc425, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:16:59,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:16:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 1718 states, 1691 states have (on average 1.978119455943229) internal successors, (3345), 1696 states have internal predecessors, (3345), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 05:16:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 05:16:59,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:59,706 INFO L195 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] [2023-11-19 05:16:59,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:16:59,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:59,712 INFO L85 PathProgramCache]: Analyzing trace with hash 851077288, now seen corresponding path program 1 times [2023-11-19 05:16:59,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:59,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650462275] [2023-11-19 05:16:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:00,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:00,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650462275] [2023-11-19 05:17:00,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650462275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:00,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:00,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:17:00,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613820847] [2023-11-19 05:17:00,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:00,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:17:00,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:00,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:17:00,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:17:00,324 INFO L87 Difference]: Start difference. First operand has 1718 states, 1691 states have (on average 1.978119455943229) internal successors, (3345), 1696 states have internal predecessors, (3345), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 05:17:01,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:01,441 INFO L93 Difference]: Finished difference Result 3487 states and 6837 transitions. [2023-11-19 05:17:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:17:01,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2023-11-19 05:17:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:01,480 INFO L225 Difference]: With dead ends: 3487 [2023-11-19 05:17:01,481 INFO L226 Difference]: Without dead ends: 1768 [2023-11-19 05:17:01,495 INFO L412 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 [2023-11-19 05:17:01,502 INFO L413 NwaCegarLoop]: 3192 mSDtfsCounter, 3428 mSDsluCounter, 3136 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3428 SdHoareTripleChecker+Valid, 6328 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:01,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3428 Valid, 6328 Invalid, 568 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:17:01,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2023-11-19 05:17:01,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1767. [2023-11-19 05:17:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1725 states have (on average 1.9582608695652175) internal successors, (3378), 1729 states have internal predecessors, (3378), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 05:17:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 3432 transitions. [2023-11-19 05:17:01,708 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 3432 transitions. Word has length 35 [2023-11-19 05:17:01,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:01,709 INFO L495 AbstractCegarLoop]: Abstraction has 1767 states and 3432 transitions. [2023-11-19 05:17:01,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 05:17:01,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 3432 transitions. [2023-11-19 05:17:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 05:17:01,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:01,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 05:17:01,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:17:01,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:17:01,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1099660902, now seen corresponding path program 1 times [2023-11-19 05:17:01,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:01,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579580817] [2023-11-19 05:17:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:01,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 05:17:02,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:02,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579580817] [2023-11-19 05:17:02,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579580817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:02,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:02,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:17:02,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924128811] [2023-11-19 05:17:02,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:02,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:17:02,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:02,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:17:02,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:17:02,367 INFO L87 Difference]: Start difference. First operand 1767 states and 3432 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 05:17:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:03,673 INFO L93 Difference]: Finished difference Result 2005 states and 3736 transitions. [2023-11-19 05:17:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:17:03,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61 [2023-11-19 05:17:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:03,696 INFO L225 Difference]: With dead ends: 2005 [2023-11-19 05:17:03,697 INFO L226 Difference]: Without dead ends: 1885 [2023-11-19 05:17:03,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:17:03,701 INFO L413 NwaCegarLoop]: 3143 mSDtfsCounter, 3449 mSDsluCounter, 9329 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3458 SdHoareTripleChecker+Valid, 12472 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:03,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3458 Valid, 12472 Invalid, 1084 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 05:17:03,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2023-11-19 05:17:03,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1871. [2023-11-19 05:17:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1797 states have (on average 1.929326655537006) internal successors, (3467), 1802 states have internal predecessors, (3467), 48 states have call successors, (48), 25 states have call predecessors, (48), 24 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 05:17:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 3561 transitions. [2023-11-19 05:17:03,817 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 3561 transitions. Word has length 61 [2023-11-19 05:17:03,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:03,818 INFO L495 AbstractCegarLoop]: Abstraction has 1871 states and 3561 transitions. [2023-11-19 05:17:03,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 05:17:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 3561 transitions. [2023-11-19 05:17:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 05:17:03,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:03,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 05:17:03,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:17:03,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:17:03,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:03,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1248377247, now seen corresponding path program 1 times [2023-11-19 05:17:03,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:03,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062206441] [2023-11-19 05:17:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:03,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 05:17:03,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:03,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062206441] [2023-11-19 05:17:03,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062206441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:03,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:03,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:17:03,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503576287] [2023-11-19 05:17:03,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:03,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:03,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:03,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:03,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:03,972 INFO L87 Difference]: Start difference. First operand 1871 states and 3561 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 05:17:04,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:04,806 INFO L93 Difference]: Finished difference Result 2047 states and 3785 transitions. [2023-11-19 05:17:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:04,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2023-11-19 05:17:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:04,834 INFO L225 Difference]: With dead ends: 2047 [2023-11-19 05:17:04,834 INFO L226 Difference]: Without dead ends: 1925 [2023-11-19 05:17:04,839 INFO L412 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 [2023-11-19 05:17:04,845 INFO L413 NwaCegarLoop]: 3166 mSDtfsCounter, 27 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6300 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:04,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6300 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:17:04,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2023-11-19 05:17:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1895. [2023-11-19 05:17:04,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1817 states have (on average 1.922399559713814) internal successors, (3493), 1822 states have internal predecessors, (3493), 50 states have call successors, (50), 27 states have call predecessors, (50), 26 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-19 05:17:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 3591 transitions. [2023-11-19 05:17:04,972 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 3591 transitions. Word has length 63 [2023-11-19 05:17:04,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:04,976 INFO L495 AbstractCegarLoop]: Abstraction has 1895 states and 3591 transitions. [2023-11-19 05:17:04,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 05:17:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 3591 transitions. [2023-11-19 05:17:04,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 05:17:04,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:04,981 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 05:17:04,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:17:04,982 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:17:04,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:04,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1245093865, now seen corresponding path program 1 times [2023-11-19 05:17:04,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:04,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398073620] [2023-11-19 05:17:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:04,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 05:17:05,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398073620] [2023-11-19 05:17:05,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398073620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:05,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:05,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:17:05,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551647139] [2023-11-19 05:17:05,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:05,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:05,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:05,101 INFO L87 Difference]: Start difference. First operand 1895 states and 3591 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 05:17:05,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:05,644 INFO L93 Difference]: Finished difference Result 2269 states and 4069 transitions. [2023-11-19 05:17:05,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:05,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 79 [2023-11-19 05:17:05,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:05,660 INFO L225 Difference]: With dead ends: 2269 [2023-11-19 05:17:05,660 INFO L226 Difference]: Without dead ends: 2020 [2023-11-19 05:17:05,662 INFO L412 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 [2023-11-19 05:17:05,663 INFO L413 NwaCegarLoop]: 3173 mSDtfsCounter, 3332 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:05,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3332 Valid, 3242 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:17:05,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2023-11-19 05:17:05,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2013. [2023-11-19 05:17:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 1901 states have (on average 1.8905839032088374) internal successors, (3594), 1907 states have internal predecessors, (3594), 71 states have call successors, (71), 40 states have call predecessors, (71), 39 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-19 05:17:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 3734 transitions. [2023-11-19 05:17:05,771 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 3734 transitions. Word has length 79 [2023-11-19 05:17:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:05,771 INFO L495 AbstractCegarLoop]: Abstraction has 2013 states and 3734 transitions. [2023-11-19 05:17:05,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 05:17:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 3734 transitions. [2023-11-19 05:17:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 05:17:05,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:05,775 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 05:17:05,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:17:05,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:17:05,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:05,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1272712288, now seen corresponding path program 1 times [2023-11-19 05:17:05,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:05,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705243950] [2023-11-19 05:17:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:05,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 05:17:06,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:06,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705243950] [2023-11-19 05:17:06,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705243950] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:17:06,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941680308] [2023-11-19 05:17:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:06,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:06,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:06,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:06,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:17:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:06,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:17:06,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:17:06,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:06,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941680308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:06,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:17:06,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-19 05:17:06,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952421155] [2023-11-19 05:17:06,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:06,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:06,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:06,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:06,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:17:06,349 INFO L87 Difference]: Start difference. First operand 2013 states and 3734 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-19 05:17:06,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:06,912 INFO L93 Difference]: Finished difference Result 2267 states and 4070 transitions. [2023-11-19 05:17:06,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:06,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 91 [2023-11-19 05:17:06,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:06,926 INFO L225 Difference]: With dead ends: 2267 [2023-11-19 05:17:06,926 INFO L226 Difference]: Without dead ends: 2019 [2023-11-19 05:17:06,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:17:06,932 INFO L413 NwaCegarLoop]: 3159 mSDtfsCounter, 66 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 6285 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:06,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 6285 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:17:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2023-11-19 05:17:07,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2011. [2023-11-19 05:17:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 1899 states have (on average 1.886255924170616) internal successors, (3582), 1905 states have internal predecessors, (3582), 71 states have call successors, (71), 40 states have call predecessors, (71), 39 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-19 05:17:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 3722 transitions. [2023-11-19 05:17:07,049 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 3722 transitions. Word has length 91 [2023-11-19 05:17:07,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:07,051 INFO L495 AbstractCegarLoop]: Abstraction has 2011 states and 3722 transitions. [2023-11-19 05:17:07,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-19 05:17:07,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 3722 transitions. [2023-11-19 05:17:07,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 05:17:07,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:07,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 05:17:07,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:17:07,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:07,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:17:07,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:07,275 INFO L85 PathProgramCache]: Analyzing trace with hash -674150912, now seen corresponding path program 1 times [2023-11-19 05:17:07,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:07,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462946465] [2023-11-19 05:17:07,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:07,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 05:17:07,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:07,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462946465] [2023-11-19 05:17:07,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462946465] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:17:07,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122759930] [2023-11-19 05:17:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:07,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:07,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:07,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:07,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:17:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:07,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:17:07,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 05:17:07,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:07,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122759930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:07,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:17:07,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-19 05:17:07,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607203291] [2023-11-19 05:17:07,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:07,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:07,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:07,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:07,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:17:07,711 INFO L87 Difference]: Start difference. First operand 2011 states and 3722 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 05:17:08,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:08,213 INFO L93 Difference]: Finished difference Result 2316 states and 4095 transitions. [2023-11-19 05:17:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:08,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2023-11-19 05:17:08,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:08,228 INFO L225 Difference]: With dead ends: 2316 [2023-11-19 05:17:08,228 INFO L226 Difference]: Without dead ends: 2072 [2023-11-19 05:17:08,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:17:08,231 INFO L413 NwaCegarLoop]: 3140 mSDtfsCounter, 3342 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3342 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:08,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3342 Valid, 3154 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:17:08,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-11-19 05:17:08,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-11-19 05:17:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1950 states have (on average 1.8646153846153846) internal successors, (3636), 1956 states have internal predecessors, (3636), 73 states have call successors, (73), 48 states have call predecessors, (73), 47 states have return successors, (71), 68 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-19 05:17:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3780 transitions. [2023-11-19 05:17:08,355 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3780 transitions. Word has length 91 [2023-11-19 05:17:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:08,355 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 3780 transitions. [2023-11-19 05:17:08,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 05:17:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3780 transitions. [2023-11-19 05:17:08,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 05:17:08,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:08,366 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 05:17:08,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:17:08,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 05:17:08,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:17:08,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:08,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1687346265, now seen corresponding path program 1 times [2023-11-19 05:17:08,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:08,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076823271] [2023-11-19 05:17:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:08,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 05:17:08,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:08,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076823271] [2023-11-19 05:17:08,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076823271] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:17:08,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725943278] [2023-11-19 05:17:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:08,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:08,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:08,870 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:08,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:17:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:09,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:17:09,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 05:17:09,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:09,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725943278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:09,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:17:09,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-19 05:17:09,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109585810] [2023-11-19 05:17:09,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:09,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:09,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:09,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:09,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:17:09,096 INFO L87 Difference]: Start difference. First operand 2072 states and 3780 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 05:17:09,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:09,817 INFO L93 Difference]: Finished difference Result 2648 states and 4464 transitions. [2023-11-19 05:17:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:09,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2023-11-19 05:17:09,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:09,836 INFO L225 Difference]: With dead ends: 2648 [2023-11-19 05:17:09,836 INFO L226 Difference]: Without dead ends: 2223 [2023-11-19 05:17:09,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:17:09,841 INFO L413 NwaCegarLoop]: 3149 mSDtfsCounter, 40 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 6266 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:09,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 6266 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:17:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2023-11-19 05:17:09,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2111. [2023-11-19 05:17:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1979 states have (on average 1.854977261243052) internal successors, (3671), 1986 states have internal predecessors, (3671), 78 states have call successors, (78), 53 states have call predecessors, (78), 52 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-19 05:17:10,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3825 transitions. [2023-11-19 05:17:10,186 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3825 transitions. Word has length 92 [2023-11-19 05:17:10,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:10,186 INFO L495 AbstractCegarLoop]: Abstraction has 2111 states and 3825 transitions. [2023-11-19 05:17:10,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 05:17:10,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3825 transitions. [2023-11-19 05:17:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 05:17:10,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:10,189 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 05:17:10,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:17:10,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 05:17:10,390 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:17:10,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:10,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1600771398, now seen corresponding path program 1 times [2023-11-19 05:17:10,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:10,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819247876] [2023-11-19 05:17:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:10,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-19 05:17:10,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:10,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819247876] [2023-11-19 05:17:10,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819247876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:17:10,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502269704] [2023-11-19 05:17:10,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:10,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:10,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:10,477 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:10,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:17:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:10,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:17:10,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:17:10,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:10,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502269704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:10,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:17:10,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-19 05:17:10,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934563282] [2023-11-19 05:17:10,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:10,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:10,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:10,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:17:10,638 INFO L87 Difference]: Start difference. First operand 2111 states and 3825 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-19 05:17:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:11,204 INFO L93 Difference]: Finished difference Result 2522 states and 4318 transitions. [2023-11-19 05:17:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:11,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2023-11-19 05:17:11,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:11,218 INFO L225 Difference]: With dead ends: 2522 [2023-11-19 05:17:11,219 INFO L226 Difference]: Without dead ends: 2216 [2023-11-19 05:17:11,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:17:11,221 INFO L413 NwaCegarLoop]: 3167 mSDtfsCounter, 43 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 6302 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:11,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 6302 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:17:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2023-11-19 05:17:11,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2147. [2023-11-19 05:17:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2007 states have (on average 1.8470353761833582) internal successors, (3707), 2014 states have internal predecessors, (3707), 82 states have call successors, (82), 57 states have call predecessors, (82), 56 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-11-19 05:17:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3869 transitions. [2023-11-19 05:17:11,308 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3869 transitions. Word has length 92 [2023-11-19 05:17:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:11,309 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 3869 transitions. [2023-11-19 05:17:11,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-19 05:17:11,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3869 transitions. [2023-11-19 05:17:11,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 05:17:11,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:11,312 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 05:17:11,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 05:17:11,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 05:17:11,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:17:11,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2019109648, now seen corresponding path program 1 times [2023-11-19 05:17:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:11,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258148342] [2023-11-19 05:17:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:11,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 05:17:11,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:11,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258148342] [2023-11-19 05:17:11,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258148342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:11,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:11,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:17:11,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507445273] [2023-11-19 05:17:11,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:11,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:17:11,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:11,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:17:11,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:17:11,665 INFO L87 Difference]: Start difference. First operand 2147 states and 3869 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 05:17:12,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:12,491 INFO L93 Difference]: Finished difference Result 2928 states and 4804 transitions. [2023-11-19 05:17:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:17:12,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2023-11-19 05:17:12,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:12,511 INFO L225 Difference]: With dead ends: 2928 [2023-11-19 05:17:12,512 INFO L226 Difference]: Without dead ends: 2665 [2023-11-19 05:17:12,514 INFO L412 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 [2023-11-19 05:17:12,515 INFO L413 NwaCegarLoop]: 3189 mSDtfsCounter, 3406 mSDsluCounter, 3143 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3406 SdHoareTripleChecker+Valid, 6332 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:12,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3406 Valid, 6332 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:17:12,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2023-11-19 05:17:12,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2460. [2023-11-19 05:17:12,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2234 states have (on average 1.7815577439570278) internal successors, (3980), 2240 states have internal predecessors, (3980), 133 states have call successors, (133), 92 states have call predecessors, (133), 91 states have return successors, (131), 128 states have call predecessors, (131), 131 states have call successors, (131) [2023-11-19 05:17:12,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 4244 transitions. [2023-11-19 05:17:12,665 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 4244 transitions. Word has length 94 [2023-11-19 05:17:12,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:12,666 INFO L495 AbstractCegarLoop]: Abstraction has 2460 states and 4244 transitions. [2023-11-19 05:17:12,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 05:17:12,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 4244 transitions. [2023-11-19 05:17:12,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-19 05:17:12,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:12,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 05:17:12,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:17:12,670 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:17:12,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash 918591068, now seen corresponding path program 1 times [2023-11-19 05:17:12,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:12,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006045865] [2023-11-19 05:17:12,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:12,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:17:12,697 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:17:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:17:12,821 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:17:12,821 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:17:12,823 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-19 05:17:12,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-19 05:17:12,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 05:17:12,831 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:17:12,839 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:17:12,949 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-19 05:17:12,963 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-19 05:17:12,970 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-19 05:17:13,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:17:13 BoogieIcfgContainer [2023-11-19 05:17:13,010 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:17:13,011 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:17:13,011 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:17:13,011 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:17:13,012 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:59" (3/4) ... [2023-11-19 05:17:13,013 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 05:17:13,051 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-19 05:17:13,052 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-19 05:17:13,059 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-19 05:17:13,184 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:17:13,184 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:17:13,185 INFO L158 Benchmark]: Toolchain (without parser) took 32820.00ms. Allocated memory was 144.7MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 66.9MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 500.0MB. Max. memory is 16.1GB. [2023-11-19 05:17:13,185 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 144.7MB. Free memory is still 115.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:17:13,187 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4625.08ms. Allocated memory was 144.7MB in the beginning and 266.3MB in the end (delta: 121.6MB). Free memory was 66.9MB in the beginning and 142.9MB in the end (delta: -76.0MB). Peak memory consumption was 93.4MB. Max. memory is 16.1GB. [2023-11-19 05:17:13,187 INFO L158 Benchmark]: Boogie Procedure Inliner took 613.83ms. Allocated memory is still 266.3MB. Free memory was 142.9MB in the beginning and 127.1MB in the end (delta: 15.8MB). Peak memory consumption was 96.5MB. Max. memory is 16.1GB. [2023-11-19 05:17:13,188 INFO L158 Benchmark]: Boogie Preprocessor took 625.99ms. Allocated memory was 266.3MB in the beginning and 436.2MB in the end (delta: 169.9MB). Free memory was 127.1MB in the beginning and 266.7MB in the end (delta: -139.6MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. [2023-11-19 05:17:13,188 INFO L158 Benchmark]: RCFGBuilder took 13286.28ms. Allocated memory was 436.2MB in the beginning and 1.4GB in the end (delta: 935.3MB). Free memory was 265.7MB in the beginning and 961.3MB in the end (delta: -695.6MB). Peak memory consumption was 505.0MB. Max. memory is 16.1GB. [2023-11-19 05:17:13,190 INFO L158 Benchmark]: TraceAbstraction took 13484.70ms. Allocated memory was 1.4GB in the beginning and 2.3GB in the end (delta: 901.8MB). Free memory was 961.3MB in the beginning and 1.7GB in the end (delta: -747.5MB). Peak memory consumption was 154.3MB. Max. memory is 16.1GB. [2023-11-19 05:17:13,191 INFO L158 Benchmark]: Witness Printer took 173.66ms. Allocated memory is still 2.3GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:17:13,194 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 144.7MB. Free memory is still 115.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4625.08ms. Allocated memory was 144.7MB in the beginning and 266.3MB in the end (delta: 121.6MB). Free memory was 66.9MB in the beginning and 142.9MB in the end (delta: -76.0MB). Peak memory consumption was 93.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 613.83ms. Allocated memory is still 266.3MB. Free memory was 142.9MB in the beginning and 127.1MB in the end (delta: 15.8MB). Peak memory consumption was 96.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 625.99ms. Allocated memory was 266.3MB in the beginning and 436.2MB in the end (delta: 169.9MB). Free memory was 127.1MB in the beginning and 266.7MB in the end (delta: -139.6MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. * RCFGBuilder took 13286.28ms. Allocated memory was 436.2MB in the beginning and 1.4GB in the end (delta: 935.3MB). Free memory was 265.7MB in the beginning and 961.3MB in the end (delta: -695.6MB). Peak memory consumption was 505.0MB. Max. memory is 16.1GB. * TraceAbstraction took 13484.70ms. Allocated memory was 1.4GB in the beginning and 2.3GB in the end (delta: 901.8MB). Free memory was 961.3MB in the beginning and 1.7GB in the end (delta: -747.5MB). Peak memory consumption was 154.3MB. Max. memory is 16.1GB. * Witness Printer took 173.66ms. Allocated memory is still 2.3GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int m_st ; [L11180] int t1_st ; [L11181] int m_i ; [L11182] int t1_i ; [L11183] int M_E = 2; [L11184] int T1_E = 2; [L11185] int E_M = 2; [L11186] int E_1 = 2; [L11190] int token ; [L11192] int local ; [L11651] COND FALSE !(__VERIFIER_nondet_int()) [L11654] CALL main2() [L11638] int __retres1 ; [L11642] CALL init_model() [L11553] m_i = 1 [L11554] t1_i = 1 [L11642] RET init_model() [L11643] CALL start_simulation() [L11579] int kernel_st ; [L11580] int tmp ; [L11581] int tmp___0 ; [L11585] kernel_st = 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11586] FCALL update_channels() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11587] CALL init_threads() [L11335] COND TRUE m_i == 1 [L11336] m_st = 0 [L11340] COND TRUE t1_i == 1 [L11341] t1_st = 0 [L11587] RET init_threads() [L11588] CALL fire_delta_events() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11424] COND FALSE !(M_E == 0) [L11429] COND FALSE !(T1_E == 0) [L11434] COND FALSE !(E_M == 0) [L11439] COND FALSE !(E_1 == 0) [L11588] RET fire_delta_events() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11589] CALL activate_threads() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11289] COND FALSE !(m_pc == 1) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11299] __retres1 = 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND FALSE !(\read(tmp)) [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11308] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11318] __retres1 = 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND FALSE !(\read(tmp___0)) [L11589] RET activate_threads() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11590] CALL reset_delta_events() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11452] COND FALSE !(M_E == 1) [L11457] COND FALSE !(T1_E == 1) [L11462] COND FALSE !(E_M == 1) [L11467] COND FALSE !(E_1 == 1) [L11590] RET reset_delta_events() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11593] COND TRUE 1 [L11596] kernel_st = 1 [L11597] CALL eval() [L11371] int tmp ; VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11375] COND TRUE 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11378] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=1, token=0] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND FALSE, EXPR !(\read(tmp_ndt_1)) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=1, tmp_ndt_1=0, token=0] [L11385-L11396] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=1, token=0] [L11399] COND TRUE t1_st == 0 [L11400] int tmp_ndt_2; [L11401] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L11402] COND TRUE, EXPR \read(tmp_ndt_2) [L11404] EXPR t1_st = 1 [L11405] CALL, EXPR transmit1() [L11253] COND TRUE t1_pc == 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=1, token=0] [L11264] COND TRUE 1 [L11266] t1_pc = 1 [L11267] t1_st = 2 [L11405] RET, EXPR transmit1() [L11399-L11410] { int tmp_ndt_2; tmp_ndt_2 = __VERIFIER_nondet_int(); if (tmp_ndt_2) { { t1_st = 1; transmit1(); } } else { } } VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=0] [L11375] COND TRUE 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=0] [L11378] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=0] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=0] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND TRUE, EXPR \read(tmp_ndt_1) [L11390] EXPR m_st = 1 [L11391] CALL, EXPR master() [L11195] int tmp_var = __VERIFIER_nondet_int(); [L11197] COND TRUE m_pc == 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L11208] COND TRUE 1 [L11211] token = __VERIFIER_nondet_int() [L11212] local = token [L11213] E_1 = 1 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L11214] CALL immediate_notify() VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11506] CALL activate_threads() VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11289] COND FALSE !(m_pc == 1) VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11299] __retres1 = 0 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND FALSE !(\read(tmp)) [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11308] COND TRUE t1_pc == 1 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11309] COND TRUE E_1 == 1 [L11310] __retres1 = 1 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND TRUE \read(tmp___0) [L11493] t1_st = 0 [L11506] RET activate_threads() VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, token=0] [L11214] RET immediate_notify() VAL [E_1=1, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=0] [L11215] E_1 = 2 [L11216] m_pc = 1 [L11217] m_st = 2 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=0] [L11391] RET, EXPR master() [L11385-L11396] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, tmp=1, token=0] [L11399] COND TRUE t1_st == 0 [L11400] int tmp_ndt_2; [L11401] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L11402] COND TRUE, EXPR \read(tmp_ndt_2) [L11404] EXPR t1_st = 1 [L11405] CALL, EXPR transmit1() [L11253] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L11256] COND TRUE t1_pc == 1 [L11272] token += 1 [L11273] E_M = 1 VAL [E_1=2, E_M=1, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11274] CALL immediate_notify() VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11506] CALL activate_threads() VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11289] COND TRUE m_pc == 1 VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11290] COND TRUE E_M == 1 [L11291] __retres1 = 1 VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND TRUE \read(tmp) [L11485] m_st = 0 [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11308] COND TRUE t1_pc == 1 VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11309] COND FALSE !(E_1 == 1) VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11318] __retres1 = 0 VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND FALSE !(\read(tmp___0)) [L11506] RET activate_threads() VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11274] RET immediate_notify() VAL [E_1=2, E_M=1, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11275] E_M = 2 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11264] COND TRUE 1 [L11266] t1_pc = 1 [L11267] t1_st = 2 [L11405] RET, EXPR transmit1() [L11399-L11410] { int tmp_ndt_2; tmp_ndt_2 = __VERIFIER_nondet_int(); if (tmp_ndt_2) { { t1_st = 1; transmit1(); } } else { } } VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=1] [L11375] COND TRUE 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=1] [L11378] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, token=1] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=1] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=1] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND TRUE \read(tmp_ndt_1) [L11390] m_st = 1 [L11391] CALL master() [L11195] int tmp_var = __VERIFIER_nondet_int(); [L11197] COND FALSE !(m_pc == 0) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11200] COND TRUE m_pc == 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11222] COND FALSE !(token != local + 1) [L11227] COND TRUE tmp_var <= 5 [L11228] COND TRUE tmp_var >= 5 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11233] COND TRUE tmp_var <= 5 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11234] COND TRUE tmp_var >= 5 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11235] COND TRUE tmp_var == 5 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11236] CALL error() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=1] [L11173] reach_error() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=1] - UnprovableResult [Line: 11094]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1718 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 13.2s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17142 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17133 mSDsluCounter, 56681 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28203 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4440 IncrementalHoareTripleChecker+Invalid, 4541 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 28478 mSDtfsCounter, 4440 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2460occurred in iteration=9, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 446 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1161 NumberOfCodeBlocks, 1161 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1051 ConstructedInterpolants, 0 QuantifiedInterpolants, 1560 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1509 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 498/541 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-19 05:17:13,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee1b45d-8364-432d-abc7-225ef53a3259/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE