./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.05.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.05.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje --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 d8722862ca37b1ee13dec8b9e420cd40ba7901837b8f3b6258499da6e8a2ca6f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:29:27,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:29:27,674 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:29:27,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:29:27,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:29:27,739 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:29:27,740 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:29:27,740 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:29:27,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:29:27,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:29:27,743 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:29:27,744 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:29:27,744 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:29:27,744 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:29:27,745 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:29:27,745 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:29:27,746 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:29:27,746 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:29:27,749 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:29:27,750 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:29:27,750 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:29:27,754 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:29:27,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:29:27,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:29:27,756 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:29:27,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:29:27,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:29:27,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:29:27,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:29:27,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:29:27,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:29:27,760 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:29:27,760 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:29:27,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:29:27,760 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:29:27,774 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:29:27,774 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:29:27,774 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:29:27,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:29:27,775 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:29:27,775 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:29:27,775 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:29:27,776 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:29:27,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:29:27,776 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:29:27,776 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:29:27,777 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:29:27,777 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_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8722862ca37b1ee13dec8b9e420cd40ba7901837b8f3b6258499da6e8a2ca6f [2024-11-09 04:29:28,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:29:28,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:29:28,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:29:28,135 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:29:28,136 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:29:28,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/systemc/transmitter.05.cil.c Unable to find full path for "g++" [2024-11-09 04:29:30,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:29:30,349 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:29:30,350 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/sv-benchmarks/c/systemc/transmitter.05.cil.c [2024-11-09 04:29:30,367 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/data/84197050c/9cc5f5a3c7d742da9ac30bdba2a0af6b/FLAG939812b44 [2024-11-09 04:29:30,701 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/data/84197050c/9cc5f5a3c7d742da9ac30bdba2a0af6b [2024-11-09 04:29:30,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:29:30,704 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:29:30,706 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:29:30,706 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:29:30,712 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:29:30,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:29:30" (1/1) ... [2024-11-09 04:29:30,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@912efc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:30, skipping insertion in model container [2024-11-09 04:29:30,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:29:30" (1/1) ... [2024-11-09 04:29:30,781 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:29:30,983 WARN L250 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_1c7e6482-79be-4a54-a13b-c59169f25834/sv-benchmarks/c/systemc/transmitter.05.cil.c[706,719] [2024-11-09 04:29:31,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:29:31,090 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:29:31,107 WARN L250 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_1c7e6482-79be-4a54-a13b-c59169f25834/sv-benchmarks/c/systemc/transmitter.05.cil.c[706,719] [2024-11-09 04:29:31,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:29:31,179 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:29:31,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31 WrapperNode [2024-11-09 04:29:31,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:29:31,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:29:31,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:29:31,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:29:31,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,228 INFO L138 Inliner]: procedures = 38, calls = 45, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 437 [2024-11-09 04:29:31,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:29:31,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:29:31,230 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:29:31,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:29:31,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,263 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:29:31,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:29:31,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:29:31,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:29:31,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:29:31,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:31,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:29:31,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7e6482-79be-4a54-a13b-c59169f25834/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:29:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:29:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-09 04:29:31,382 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-09 04:29:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-09 04:29:31,384 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-09 04:29:31,384 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-09 04:29:31,384 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-09 04:29:31,385 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-09 04:29:31,385 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-09 04:29:31,385 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-09 04:29:31,386 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-09 04:29:31,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:29:31,386 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-09 04:29:31,386 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-09 04:29:31,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:29:31,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:29:31,526 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:29:31,530 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:29:32,245 INFO L? ?]: Removed 55 outVars from TransFormulas that were not future-live. [2024-11-09 04:29:32,245 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:29:32,623 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:29:32,623 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-09 04:29:32,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:29:32 BoogieIcfgContainer [2024-11-09 04:29:32,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:29:32,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:29:32,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:29:32,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:29:32,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:29:30" (1/3) ... [2024-11-09 04:29:32,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a34629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:29:32, skipping insertion in model container [2024-11-09 04:29:32,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (2/3) ... [2024-11-09 04:29:32,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a34629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:29:32, skipping insertion in model container [2024-11-09 04:29:32,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:29:32" (3/3) ... [2024-11-09 04:29:32,639 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.05.cil.c [2024-11-09 04:29:32,655 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:29:32,655 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:29:32,732 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:29:32,739 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d8839fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:29:32,740 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:29:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 91 states have internal predecessors, (133), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-09 04:29:32,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 04:29:32,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:32,758 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:32,759 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:32,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:32,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2106709524, now seen corresponding path program 1 times [2024-11-09 04:29:32,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:32,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416622738] [2024-11-09 04:29:32,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:32,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:29:33,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:33,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416622738] [2024-11-09 04:29:33,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416622738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:33,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:33,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:29:33,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143535291] [2024-11-09 04:29:33,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:33,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:29:33,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:33,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:29:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:29:33,255 INFO L87 Difference]: Start difference. First operand has 115 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 91 states have internal predecessors, (133), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:33,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:33,695 INFO L93 Difference]: Finished difference Result 332 states and 495 transitions. [2024-11-09 04:29:33,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:29:33,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-09 04:29:33,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:33,713 INFO L225 Difference]: With dead ends: 332 [2024-11-09 04:29:33,713 INFO L226 Difference]: Without dead ends: 218 [2024-11-09 04:29:33,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:29:33,720 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 288 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:33,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 434 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:29:33,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-09 04:29:33,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2024-11-09 04:29:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 169 states have (on average 1.4260355029585798) internal successors, (241), 171 states have internal predecessors, (241), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-09 04:29:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 305 transitions. [2024-11-09 04:29:33,801 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 305 transitions. Word has length 49 [2024-11-09 04:29:33,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:33,802 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 305 transitions. [2024-11-09 04:29:33,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:33,803 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 305 transitions. [2024-11-09 04:29:33,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 04:29:33,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:33,805 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:33,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:29:33,806 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:33,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1231329389, now seen corresponding path program 1 times [2024-11-09 04:29:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:33,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520533357] [2024-11-09 04:29:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:33,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:29:34,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:34,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520533357] [2024-11-09 04:29:34,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520533357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:34,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:34,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:29:34,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282371213] [2024-11-09 04:29:34,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:34,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:29:34,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:34,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:29:34,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:29:34,030 INFO L87 Difference]: Start difference. First operand 214 states and 305 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:34,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:34,857 INFO L93 Difference]: Finished difference Result 1225 states and 1825 transitions. [2024-11-09 04:29:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:29:34,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-09 04:29:34,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:34,877 INFO L225 Difference]: With dead ends: 1225 [2024-11-09 04:29:34,877 INFO L226 Difference]: Without dead ends: 1016 [2024-11-09 04:29:34,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:29:34,885 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 632 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:34,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 645 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 04:29:34,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2024-11-09 04:29:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 980. [2024-11-09 04:29:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 787 states have (on average 1.4142312579415501) internal successors, (1113), 795 states have internal predecessors, (1113), 132 states have call successors, (132), 60 states have call predecessors, (132), 60 states have return successors, (190), 125 states have call predecessors, (190), 132 states have call successors, (190) [2024-11-09 04:29:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1435 transitions. [2024-11-09 04:29:35,049 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1435 transitions. Word has length 49 [2024-11-09 04:29:35,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:35,050 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1435 transitions. [2024-11-09 04:29:35,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:35,050 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1435 transitions. [2024-11-09 04:29:35,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 04:29:35,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:35,053 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:35,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:29:35,054 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:35,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash -345228370, now seen corresponding path program 1 times [2024-11-09 04:29:35,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:35,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654394430] [2024-11-09 04:29:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:35,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:29:35,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:35,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654394430] [2024-11-09 04:29:35,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654394430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:35,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:35,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:29:35,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597840324] [2024-11-09 04:29:35,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:35,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:29:35,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:35,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:29:35,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:29:35,259 INFO L87 Difference]: Start difference. First operand 980 states and 1435 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:36,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:36,011 INFO L93 Difference]: Finished difference Result 3843 states and 5771 transitions. [2024-11-09 04:29:36,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:29:36,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-09 04:29:36,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:36,033 INFO L225 Difference]: With dead ends: 3843 [2024-11-09 04:29:36,034 INFO L226 Difference]: Without dead ends: 2868 [2024-11-09 04:29:36,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:29:36,042 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 634 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:36,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 644 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 04:29:36,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2024-11-09 04:29:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2630. [2024-11-09 04:29:36,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 2155 states have (on average 1.4241299303944315) internal successors, (3069), 2153 states have internal predecessors, (3069), 310 states have call successors, (310), 148 states have call predecessors, (310), 164 states have return successors, (552), 329 states have call predecessors, (552), 310 states have call successors, (552) [2024-11-09 04:29:36,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3931 transitions. [2024-11-09 04:29:36,261 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3931 transitions. Word has length 49 [2024-11-09 04:29:36,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:36,261 INFO L471 AbstractCegarLoop]: Abstraction has 2630 states and 3931 transitions. [2024-11-09 04:29:36,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3931 transitions. [2024-11-09 04:29:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 04:29:36,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:36,264 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:36,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 04:29:36,264 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:36,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:36,265 INFO L85 PathProgramCache]: Analyzing trace with hash -402372595, now seen corresponding path program 1 times [2024-11-09 04:29:36,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:36,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959712498] [2024-11-09 04:29:36,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:36,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:29:36,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:36,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959712498] [2024-11-09 04:29:36,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959712498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:36,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:36,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:29:36,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103207226] [2024-11-09 04:29:36,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:36,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:29:36,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:36,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:29:36,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:29:36,402 INFO L87 Difference]: Start difference. First operand 2630 states and 3931 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:37,407 INFO L93 Difference]: Finished difference Result 9697 states and 15016 transitions. [2024-11-09 04:29:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:29:37,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-09 04:29:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:37,463 INFO L225 Difference]: With dead ends: 9697 [2024-11-09 04:29:37,463 INFO L226 Difference]: Without dead ends: 7072 [2024-11-09 04:29:37,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:29:37,481 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 630 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:37,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 643 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 04:29:37,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2024-11-09 04:29:38,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 6510. [2024-11-09 04:29:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6510 states, 5363 states have (on average 1.4243893343278016) internal successors, (7639), 5303 states have internal predecessors, (7639), 726 states have call successors, (726), 348 states have call predecessors, (726), 420 states have return successors, (1596), 859 states have call predecessors, (1596), 726 states have call successors, (1596) [2024-11-09 04:29:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6510 states to 6510 states and 9961 transitions. [2024-11-09 04:29:38,091 INFO L78 Accepts]: Start accepts. Automaton has 6510 states and 9961 transitions. Word has length 49 [2024-11-09 04:29:38,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:38,092 INFO L471 AbstractCegarLoop]: Abstraction has 6510 states and 9961 transitions. [2024-11-09 04:29:38,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:38,093 INFO L276 IsEmpty]: Start isEmpty. Operand 6510 states and 9961 transitions. [2024-11-09 04:29:38,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 04:29:38,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:38,095 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:38,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 04:29:38,095 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:38,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:38,096 INFO L85 PathProgramCache]: Analyzing trace with hash 337605795, now seen corresponding path program 1 times [2024-11-09 04:29:38,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:38,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578736685] [2024-11-09 04:29:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:38,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:29:38,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:38,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578736685] [2024-11-09 04:29:38,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578736685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:38,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:38,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:29:38,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723444325] [2024-11-09 04:29:38,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:38,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:29:38,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:38,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:29:38,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:29:38,287 INFO L87 Difference]: Start difference. First operand 6510 states and 9961 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:39,528 INFO L93 Difference]: Finished difference Result 17577 states and 26992 transitions. [2024-11-09 04:29:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:29:39,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2024-11-09 04:29:39,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:39,613 INFO L225 Difference]: With dead ends: 17577 [2024-11-09 04:29:39,613 INFO L226 Difference]: Without dead ends: 11073 [2024-11-09 04:29:39,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:29:39,641 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 438 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:39,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 355 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:29:39,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11073 states. [2024-11-09 04:29:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11073 to 10350. [2024-11-09 04:29:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10350 states, 8550 states have (on average 1.4085380116959065) internal successors, (12043), 8475 states have internal predecessors, (12043), 1087 states have call successors, (1087), 568 states have call predecessors, (1087), 712 states have return successors, (2392), 1307 states have call predecessors, (2392), 1087 states have call successors, (2392) [2024-11-09 04:29:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10350 states to 10350 states and 15522 transitions. [2024-11-09 04:29:40,582 INFO L78 Accepts]: Start accepts. Automaton has 10350 states and 15522 transitions. Word has length 53 [2024-11-09 04:29:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:40,582 INFO L471 AbstractCegarLoop]: Abstraction has 10350 states and 15522 transitions. [2024-11-09 04:29:40,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 10350 states and 15522 transitions. [2024-11-09 04:29:40,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 04:29:40,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:40,584 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:40,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 04:29:40,585 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:40,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:40,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1278245453, now seen corresponding path program 1 times [2024-11-09 04:29:40,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:40,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63040370] [2024-11-09 04:29:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:40,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:29:40,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:40,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63040370] [2024-11-09 04:29:40,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63040370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:40,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:40,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:29:40,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925988136] [2024-11-09 04:29:40,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:40,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:29:40,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:40,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:29:40,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:29:40,894 INFO L87 Difference]: Start difference. First operand 10350 states and 15522 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:42,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:42,726 INFO L93 Difference]: Finished difference Result 27476 states and 41747 transitions. [2024-11-09 04:29:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:29:42,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2024-11-09 04:29:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:42,837 INFO L225 Difference]: With dead ends: 27476 [2024-11-09 04:29:42,838 INFO L226 Difference]: Without dead ends: 17132 [2024-11-09 04:29:42,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:29:42,874 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 384 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:42,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 468 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:29:42,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17132 states. [2024-11-09 04:29:44,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17132 to 16234. [2024-11-09 04:29:44,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16234 states, 13419 states have (on average 1.3998062448766675) internal successors, (18784), 13344 states have internal predecessors, (18784), 1708 states have call successors, (1708), 922 states have call predecessors, (1708), 1106 states have return successors, (3787), 1968 states have call predecessors, (3787), 1708 states have call successors, (3787) [2024-11-09 04:29:44,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16234 states to 16234 states and 24279 transitions. [2024-11-09 04:29:44,257 INFO L78 Accepts]: Start accepts. Automaton has 16234 states and 24279 transitions. Word has length 55 [2024-11-09 04:29:44,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:44,261 INFO L471 AbstractCegarLoop]: Abstraction has 16234 states and 24279 transitions. [2024-11-09 04:29:44,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:44,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16234 states and 24279 transitions. [2024-11-09 04:29:44,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 04:29:44,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:44,264 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:44,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 04:29:44,266 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:44,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:44,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1559168393, now seen corresponding path program 1 times [2024-11-09 04:29:44,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:44,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940024651] [2024-11-09 04:29:44,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:44,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:29:44,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:44,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940024651] [2024-11-09 04:29:44,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940024651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:44,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:44,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:29:44,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120927794] [2024-11-09 04:29:44,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:44,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:29:44,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:44,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:29:44,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:29:44,470 INFO L87 Difference]: Start difference. First operand 16234 states and 24279 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:46,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:46,998 INFO L93 Difference]: Finished difference Result 43279 states and 65611 transitions. [2024-11-09 04:29:46,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:29:46,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-11-09 04:29:47,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:47,170 INFO L225 Difference]: With dead ends: 43279 [2024-11-09 04:29:47,171 INFO L226 Difference]: Without dead ends: 27051 [2024-11-09 04:29:47,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:29:47,242 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 406 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:47,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 357 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:29:47,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27051 states. [2024-11-09 04:29:49,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27051 to 25925. [2024-11-09 04:29:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25925 states, 21432 states have (on average 1.3879712579320642) internal successors, (29747), 21365 states have internal predecessors, (29747), 2734 states have call successors, (2734), 1526 states have call predecessors, (2734), 1758 states have return successors, (6106), 3034 states have call predecessors, (6106), 2734 states have call successors, (6106) [2024-11-09 04:29:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25925 states to 25925 states and 38587 transitions. [2024-11-09 04:29:49,443 INFO L78 Accepts]: Start accepts. Automaton has 25925 states and 38587 transitions. Word has length 57 [2024-11-09 04:29:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:49,444 INFO L471 AbstractCegarLoop]: Abstraction has 25925 states and 38587 transitions. [2024-11-09 04:29:49,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 25925 states and 38587 transitions. [2024-11-09 04:29:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 04:29:49,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:49,447 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:49,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 04:29:49,447 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:49,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2117410099, now seen corresponding path program 1 times [2024-11-09 04:29:49,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:49,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146960471] [2024-11-09 04:29:49,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:49,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:29:49,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:49,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146960471] [2024-11-09 04:29:49,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146960471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:49,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:49,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:29:49,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783213448] [2024-11-09 04:29:49,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:49,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:29:49,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:29:49,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:29:49,649 INFO L87 Difference]: Start difference. First operand 25925 states and 38587 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:29:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:54,864 INFO L93 Difference]: Finished difference Result 78828 states and 119189 transitions. [2024-11-09 04:29:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:29:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-11-09 04:29:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:55,150 INFO L225 Difference]: With dead ends: 78828 [2024-11-09 04:29:55,150 INFO L226 Difference]: Without dead ends: 52909 [2024-11-09 04:29:55,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:29:55,224 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 406 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:55,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 331 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:29:55,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52909 states. [2024-11-09 04:30:00,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52909 to 49827. [2024-11-09 04:30:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49827 states, 41126 states have (on average 1.3702280795603754) internal successors, (56352), 41078 states have internal predecessors, (56352), 5236 states have call successors, (5236), 3016 states have call predecessors, (5236), 3464 states have return successors, (11322), 5733 states have call predecessors, (11322), 5236 states have call successors, (11322) [2024-11-09 04:30:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49827 states to 49827 states and 72910 transitions. [2024-11-09 04:30:00,648 INFO L78 Accepts]: Start accepts. Automaton has 49827 states and 72910 transitions. Word has length 59 [2024-11-09 04:30:00,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:00,649 INFO L471 AbstractCegarLoop]: Abstraction has 49827 states and 72910 transitions. [2024-11-09 04:30:00,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:30:00,649 INFO L276 IsEmpty]: Start isEmpty. Operand 49827 states and 72910 transitions. [2024-11-09 04:30:00,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 04:30:00,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:00,651 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:00,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 04:30:00,651 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:00,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1566772489, now seen corresponding path program 1 times [2024-11-09 04:30:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:00,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999278130] [2024-11-09 04:30:00,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:00,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:00,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:30:00,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:00,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999278130] [2024-11-09 04:30:00,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999278130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:00,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:00,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:30:00,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909047702] [2024-11-09 04:30:00,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:00,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:30:00,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:00,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:30:00,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:30:00,725 INFO L87 Difference]: Start difference. First operand 49827 states and 72910 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 04:30:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:06,882 INFO L93 Difference]: Finished difference Result 98976 states and 148020 transitions. [2024-11-09 04:30:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:30:06,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2024-11-09 04:30:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:07,493 INFO L225 Difference]: With dead ends: 98976 [2024-11-09 04:30:07,494 INFO L226 Difference]: Without dead ends: 63320 [2024-11-09 04:30:07,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:30:07,634 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 124 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:07,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 256 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:30:07,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63320 states. [2024-11-09 04:30:13,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63320 to 54734. [2024-11-09 04:30:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54734 states, 44771 states have (on average 1.3464742802260392) internal successors, (60283), 44922 states have internal predecessors, (60283), 6148 states have call successors, (6148), 3576 states have call predecessors, (6148), 3814 states have return successors, (10768), 6236 states have call predecessors, (10768), 6148 states have call successors, (10768) [2024-11-09 04:30:14,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54734 states to 54734 states and 77199 transitions. [2024-11-09 04:30:14,099 INFO L78 Accepts]: Start accepts. Automaton has 54734 states and 77199 transitions. Word has length 61 [2024-11-09 04:30:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:14,101 INFO L471 AbstractCegarLoop]: Abstraction has 54734 states and 77199 transitions. [2024-11-09 04:30:14,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 04:30:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 54734 states and 77199 transitions. [2024-11-09 04:30:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 04:30:14,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:14,331 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:14,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 04:30:14,331 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:14,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1989768799, now seen corresponding path program 1 times [2024-11-09 04:30:14,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:14,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758486164] [2024-11-09 04:30:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:14,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:14,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:14,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758486164] [2024-11-09 04:30:14,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758486164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:14,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:14,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:30:14,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747060705] [2024-11-09 04:30:14,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:14,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:30:14,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:14,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:30:14,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:30:14,558 INFO L87 Difference]: Start difference. First operand 54734 states and 77199 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 04:30:23,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:23,544 INFO L93 Difference]: Finished difference Result 159686 states and 225547 transitions. [2024-11-09 04:30:23,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:30:23,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 81 [2024-11-09 04:30:23,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:24,030 INFO L225 Difference]: With dead ends: 159686 [2024-11-09 04:30:24,031 INFO L226 Difference]: Without dead ends: 104958 [2024-11-09 04:30:24,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:30:24,377 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 406 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:24,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 381 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:30:24,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104958 states.