./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3945fa4b58cef50cb4b44b435a699812e99a1f6375664d08551274c6b50bee45 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:32:20,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:32:20,840 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:32:20,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:32:20,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:32:20,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:32:20,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:32:20,870 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:32:20,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:32:20,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:32:20,871 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:32:20,872 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:32:20,872 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:32:20,876 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:32:20,877 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:32:20,877 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:32:20,878 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:32:20,878 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:32:20,878 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:32:20,879 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:32:20,879 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:32:20,884 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:32:20,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:32:20,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:32:20,885 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:32:20,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:32:20,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:32:20,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:32:20,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:32:20,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:32:20,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:32:20,887 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:32:20,890 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:32:20,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:32:20,892 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:32:20,892 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:32:20,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:32:20,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:32:20,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:32:20,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:32:20,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:32:20,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:32:20,895 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:32:20,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:32:20,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:32:20,896 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:32:20,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:32:20,896 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_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3945fa4b58cef50cb4b44b435a699812e99a1f6375664d08551274c6b50bee45 [2024-11-02 12:32:21,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:32:21,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:32:21,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:32:21,177 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:32:21,177 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:32:21,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/systemc/transmitter.09.cil.c Unable to find full path for "g++" [2024-11-02 12:32:23,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:32:23,799 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:32:23,804 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/sv-benchmarks/c/systemc/transmitter.09.cil.c [2024-11-02 12:32:23,826 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/data/40a31ec9a/3f9a839d115b4f05a6a9a18574d35ad9/FLAG54196316b [2024-11-02 12:32:23,849 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/data/40a31ec9a/3f9a839d115b4f05a6a9a18574d35ad9 [2024-11-02 12:32:23,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:32:23,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:32:23,858 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:32:23,859 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:32:23,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:32:23,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:32:23" (1/1) ... [2024-11-02 12:32:23,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b022b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:23, skipping insertion in model container [2024-11-02 12:32:23,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:32:23" (1/1) ... [2024-11-02 12:32:23,938 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:32:24,172 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/sv-benchmarks/c/systemc/transmitter.09.cil.c[706,719] [2024-11-02 12:32:24,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:32:24,377 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:32:24,391 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/sv-benchmarks/c/systemc/transmitter.09.cil.c[706,719] [2024-11-02 12:32:24,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:32:24,486 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:32:24,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24 WrapperNode [2024-11-02 12:32:24,487 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:32:24,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:32:24,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:32:24,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:32:24,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24" (1/1) ... [2024-11-02 12:32:24,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24" (1/1) ... [2024-11-02 12:32:24,572 INFO L138 Inliner]: procedures = 46, calls = 57, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 682 [2024-11-02 12:32:24,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:32:24,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:32:24,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:32:24,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:32:24,587 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24" (1/1) ... [2024-11-02 12:32:24,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24" (1/1) ... [2024-11-02 12:32:24,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24" (1/1) ... [2024-11-02 12:32:24,597 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24" (1/1) ... [2024-11-02 12:32:24,626 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24" (1/1) ... [2024-11-02 12:32:24,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24" (1/1) ... [2024-11-02 12:32:24,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24" (1/1) ... [2024-11-02 12:32:24,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24" (1/1) ... [2024-11-02 12:32:24,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:32:24,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:32:24,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:32:24,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:32:24,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24" (1/1) ... [2024-11-02 12:32:24,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:32:24,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:32:24,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:32:24,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931a7991-1c00-4df3-b7f1-adebf691f5ae/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:32:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:32:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-02 12:32:24,767 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-02 12:32:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-02 12:32:24,768 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-02 12:32:24,770 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-02 12:32:24,770 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-02 12:32:24,770 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-02 12:32:24,771 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-02 12:32:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-02 12:32:24,771 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-02 12:32:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:32:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-02 12:32:24,772 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-02 12:32:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:32:24,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:32:24,964 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:32:24,967 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:32:26,008 INFO L? ?]: Removed 79 outVars from TransFormulas that were not future-live. [2024-11-02 12:32:26,008 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:32:26,507 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:32:26,508 INFO L316 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-02 12:32:26,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:32:26 BoogieIcfgContainer [2024-11-02 12:32:26,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:32:26,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:32:26,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:32:26,517 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:32:26,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:32:23" (1/3) ... [2024-11-02 12:32:26,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cd7113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:32:26, skipping insertion in model container [2024-11-02 12:32:26,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:24" (2/3) ... [2024-11-02 12:32:26,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cd7113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:32:26, skipping insertion in model container [2024-11-02 12:32:26,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:32:26" (3/3) ... [2024-11-02 12:32:26,522 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.09.cil.c [2024-11-02 12:32:26,558 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:32:26,558 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:32:26,647 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:32:26,656 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;@5253ae8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:32:26,656 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:32:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 135 states have internal predecessors, (201), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-02 12:32:26,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-02 12:32:26,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:26,676 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, 1, 1, 1, 1] [2024-11-02 12:32:26,677 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:26,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:26,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1545093313, now seen corresponding path program 1 times [2024-11-02 12:32:26,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:26,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102355477] [2024-11-02 12:32:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:26,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:27,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:27,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102355477] [2024-11-02 12:32:27,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102355477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:27,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:27,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:32:27,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484054969] [2024-11-02 12:32:27,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:27,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:32:27,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:27,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:32:27,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:32:27,354 INFO L87 Difference]: Start difference. First operand has 163 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 135 states have internal predecessors, (201), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:27,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:27,988 INFO L93 Difference]: Finished difference Result 476 states and 727 transitions. [2024-11-02 12:32:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:32:27,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 65 [2024-11-02 12:32:27,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:28,008 INFO L225 Difference]: With dead ends: 476 [2024-11-02 12:32:28,008 INFO L226 Difference]: Without dead ends: 314 [2024-11-02 12:32:28,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:32:28,019 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 428 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:28,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 674 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:32:28,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-02 12:32:28,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 310. [2024-11-02 12:32:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 257 states have (on average 1.4669260700389104) internal successors, (377), 259 states have internal predecessors, (377), 40 states have call successors, (40), 12 states have call predecessors, (40), 12 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-02 12:32:28,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 457 transitions. [2024-11-02 12:32:28,134 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 457 transitions. Word has length 65 [2024-11-02 12:32:28,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:28,135 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 457 transitions. [2024-11-02 12:32:28,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:28,136 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 457 transitions. [2024-11-02 12:32:28,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-02 12:32:28,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:28,144 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, 1, 1, 1, 1] [2024-11-02 12:32:28,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:32:28,144 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:28,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:28,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1641745344, now seen corresponding path program 1 times [2024-11-02 12:32:28,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:28,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590355558] [2024-11-02 12:32:28,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:28,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:28,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:28,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590355558] [2024-11-02 12:32:28,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590355558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:28,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:28,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:32:28,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752322142] [2024-11-02 12:32:28,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:28,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:32:28,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:28,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:32:28,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:32:28,455 INFO L87 Difference]: Start difference. First operand 310 states and 457 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:29,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:29,528 INFO L93 Difference]: Finished difference Result 1801 states and 2793 transitions. [2024-11-02 12:32:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:32:29,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 65 [2024-11-02 12:32:29,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:29,548 INFO L225 Difference]: With dead ends: 1801 [2024-11-02 12:32:29,548 INFO L226 Difference]: Without dead ends: 1496 [2024-11-02 12:32:29,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:32:29,555 INFO L432 NwaCegarLoop]: 461 mSDtfsCounter, 988 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:29,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1011 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-02 12:32:29,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2024-11-02 12:32:29,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1460. [2024-11-02 12:32:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1227 states have (on average 1.4612876935615322) internal successors, (1793), 1235 states have internal predecessors, (1793), 172 states have call successors, (172), 60 states have call predecessors, (172), 60 states have return successors, (262), 165 states have call predecessors, (262), 172 states have call successors, (262) [2024-11-02 12:32:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2227 transitions. [2024-11-02 12:32:29,709 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2227 transitions. Word has length 65 [2024-11-02 12:32:29,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:29,709 INFO L471 AbstractCegarLoop]: Abstraction has 1460 states and 2227 transitions. [2024-11-02 12:32:29,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2227 transitions. [2024-11-02 12:32:29,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-02 12:32:29,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:29,713 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, 1, 1, 1, 1] [2024-11-02 12:32:29,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:32:29,715 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:29,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:29,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1185018623, now seen corresponding path program 1 times [2024-11-02 12:32:29,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:29,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382339688] [2024-11-02 12:32:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:29,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:29,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:29,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:29,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382339688] [2024-11-02 12:32:29,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382339688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:29,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:29,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:32:29,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177674095] [2024-11-02 12:32:29,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:29,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:32:29,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:32:29,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:32:29,883 INFO L87 Difference]: Start difference. First operand 1460 states and 2227 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:30,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:30,869 INFO L93 Difference]: Finished difference Result 5763 states and 9043 transitions. [2024-11-02 12:32:30,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:32:30,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 65 [2024-11-02 12:32:30,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:30,896 INFO L225 Difference]: With dead ends: 5763 [2024-11-02 12:32:30,896 INFO L226 Difference]: Without dead ends: 4308 [2024-11-02 12:32:30,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:32:30,904 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 990 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:30,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1022 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:32:30,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2024-11-02 12:32:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 4038. [2024-11-02 12:32:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 3475 states have (on average 1.4702158273381294) internal successors, (5109), 3441 states have internal predecessors, (5109), 398 states have call successors, (398), 148 states have call predecessors, (398), 164 states have return successors, (784), 449 states have call predecessors, (784), 398 states have call successors, (784) [2024-11-02 12:32:31,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 6291 transitions. [2024-11-02 12:32:31,217 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 6291 transitions. Word has length 65 [2024-11-02 12:32:31,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:31,218 INFO L471 AbstractCegarLoop]: Abstraction has 4038 states and 6291 transitions. [2024-11-02 12:32:31,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 6291 transitions. [2024-11-02 12:32:31,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-02 12:32:31,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:31,224 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, 1, 1, 1, 1] [2024-11-02 12:32:31,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:32:31,226 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:31,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:31,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1801943904, now seen corresponding path program 1 times [2024-11-02 12:32:31,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:31,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128828605] [2024-11-02 12:32:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:31,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:31,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:31,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128828605] [2024-11-02 12:32:31,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128828605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:31,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:31,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:32:31,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459240840] [2024-11-02 12:32:31,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:31,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:32:31,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:31,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:32:31,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:32:31,461 INFO L87 Difference]: Start difference. First operand 4038 states and 6291 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:32,719 INFO L93 Difference]: Finished difference Result 14911 states and 24025 transitions. [2024-11-02 12:32:32,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:32:32,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 65 [2024-11-02 12:32:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:32,807 INFO L225 Difference]: With dead ends: 14911 [2024-11-02 12:32:32,808 INFO L226 Difference]: Without dead ends: 10878 [2024-11-02 12:32:32,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:32:32,834 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 985 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:32,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 1019 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:32:32,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10878 states. [2024-11-02 12:32:33,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10878 to 10270. [2024-11-02 12:32:33,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10270 states, 8957 states have (on average 1.477838562018533) internal successors, (13237), 8785 states have internal predecessors, (13237), 892 states have call successors, (892), 348 states have call predecessors, (892), 420 states have return successors, (2216), 1137 states have call predecessors, (2216), 892 states have call successors, (2216) [2024-11-02 12:32:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10270 states to 10270 states and 16345 transitions. [2024-11-02 12:32:33,750 INFO L78 Accepts]: Start accepts. Automaton has 10270 states and 16345 transitions. Word has length 65 [2024-11-02 12:32:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:33,751 INFO L471 AbstractCegarLoop]: Abstraction has 10270 states and 16345 transitions. [2024-11-02 12:32:33,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:33,752 INFO L276 IsEmpty]: Start isEmpty. Operand 10270 states and 16345 transitions. [2024-11-02 12:32:33,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-02 12:32:33,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:33,754 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, 1, 1, 1, 1] [2024-11-02 12:32:33,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:32:33,754 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:33,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:33,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2093032193, now seen corresponding path program 1 times [2024-11-02 12:32:33,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:33,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294541519] [2024-11-02 12:32:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:33,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:33,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:33,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294541519] [2024-11-02 12:32:33,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294541519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:33,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:33,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:32:33,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217288826] [2024-11-02 12:32:33,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:33,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:32:33,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:33,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:32:33,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:32:33,938 INFO L87 Difference]: Start difference. First operand 10270 states and 16345 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:36,385 INFO L93 Difference]: Finished difference Result 37215 states and 61723 transitions. [2024-11-02 12:32:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:32:36,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 65 [2024-11-02 12:32:36,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:36,658 INFO L225 Difference]: With dead ends: 37215 [2024-11-02 12:32:36,659 INFO L226 Difference]: Without dead ends: 26950 [2024-11-02 12:32:36,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:32:36,724 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 981 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:36,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1017 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 12:32:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26950 states. [2024-11-02 12:32:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26950 to 25662. [2024-11-02 12:32:38,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25662 states, 22575 states have (on average 1.4861129568106313) internal successors, (33549), 21981 states have internal predecessors, (33549), 2010 states have call successors, (2010), 820 states have call predecessors, (2010), 1076 states have return successors, (6224), 2861 states have call predecessors, (6224), 2010 states have call successors, (6224) [2024-11-02 12:32:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25662 states to 25662 states and 41783 transitions. [2024-11-02 12:32:38,882 INFO L78 Accepts]: Start accepts. Automaton has 25662 states and 41783 transitions. Word has length 65 [2024-11-02 12:32:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:38,883 INFO L471 AbstractCegarLoop]: Abstraction has 25662 states and 41783 transitions. [2024-11-02 12:32:38,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:38,885 INFO L276 IsEmpty]: Start isEmpty. Operand 25662 states and 41783 transitions. [2024-11-02 12:32:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-02 12:32:38,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:38,889 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, 1, 1, 1, 1] [2024-11-02 12:32:38,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:32:38,892 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:38,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:38,895 INFO L85 PathProgramCache]: Analyzing trace with hash 573284830, now seen corresponding path program 1 times [2024-11-02 12:32:38,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:38,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998573836] [2024-11-02 12:32:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:38,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:39,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:39,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998573836] [2024-11-02 12:32:39,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998573836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:39,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:39,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:32:39,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534145835] [2024-11-02 12:32:39,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:39,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:32:39,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:39,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:32:39,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:32:39,082 INFO L87 Difference]: Start difference. First operand 25662 states and 41783 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:43,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:43,407 INFO L93 Difference]: Finished difference Result 93169 states and 159964 transitions. [2024-11-02 12:32:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:32:43,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 65 [2024-11-02 12:32:43,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:43,964 INFO L225 Difference]: With dead ends: 93169 [2024-11-02 12:32:43,964 INFO L226 Difference]: Without dead ends: 67512 [2024-11-02 12:32:44,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:32:44,088 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 976 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:44,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1018 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 12:32:44,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67512 states. [2024-11-02 12:32:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67512 to 64498. [2024-11-02 12:32:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64498 states, 56963 states have (on average 1.4893702929972088) internal successors, (84839), 54831 states have internal predecessors, (84839), 4714 states have call successors, (4714), 1980 states have call predecessors, (4714), 2820 states have return successors, (18172), 7687 states have call predecessors, (18172), 4714 states have call successors, (18172) [2024-11-02 12:32:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64498 states to 64498 states and 107725 transitions. [2024-11-02 12:32:49,212 INFO L78 Accepts]: Start accepts. Automaton has 64498 states and 107725 transitions. Word has length 65 [2024-11-02 12:32:49,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:49,212 INFO L471 AbstractCegarLoop]: Abstraction has 64498 states and 107725 transitions. [2024-11-02 12:32:49,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:32:49,213 INFO L276 IsEmpty]: Start isEmpty. Operand 64498 states and 107725 transitions. [2024-11-02 12:32:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-02 12:32:49,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:49,215 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:32:49,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:32:49,215 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:32:49,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:49,216 INFO L85 PathProgramCache]: Analyzing trace with hash -729906047, now seen corresponding path program 1 times [2024-11-02 12:32:49,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:49,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287794324] [2024-11-02 12:32:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:49,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:49,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:49,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287794324] [2024-11-02 12:32:49,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287794324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:49,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:49,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:32:49,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774760931] [2024-11-02 12:32:49,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:49,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:32:49,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:49,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:32:49,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:32:49,439 INFO L87 Difference]: Start difference. First operand 64498 states and 107725 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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)