./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/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_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/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_b9d5ec67-7f56-4d64-8c5f-9144ed074132/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 a9066ec9ee7e14c7adf63eb106d945f26321fdd64b3726b0fe14ce5b202a77d4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:55:23,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:55:23,398 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:55:23,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:55:23,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:55:23,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:55:23,437 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:55:23,438 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:55:23,439 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:55:23,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:55:23,441 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:55:23,442 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:55:23,442 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:55:23,443 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:55:23,445 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:55:23,446 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:55:23,446 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:55:23,446 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:55:23,447 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:55:23,447 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:55:23,452 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:55:23,452 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:55:23,453 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:55:23,453 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:55:23,454 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:55:23,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:55:23,454 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:55:23,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:55:23,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:55:23,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:55:23,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:55:23,457 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:55:23,458 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:55:23,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:55:23,459 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:55:23,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:55:23,460 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:55:23,460 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:55:23,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:55:23,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:55:23,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:55:23,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:55:23,462 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:55:23,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:55:23,464 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:55:23,464 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:55:23,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:55:23,465 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_b9d5ec67-7f56-4d64-8c5f-9144ed074132/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9066ec9ee7e14c7adf63eb106d945f26321fdd64b3726b0fe14ce5b202a77d4 [2024-11-09 06:55:23,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:55:23,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:55:23,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:55:23,882 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:55:23,882 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:55:23,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c Unable to find full path for "g++" [2024-11-09 06:55:26,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:55:26,429 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:55:26,430 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-09 06:55:26,458 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/data/c2ba8b9bf/927cdb252ad645c7b2f1057e5a8fb908/FLAGc6b213ed9 [2024-11-09 06:55:26,479 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/data/c2ba8b9bf/927cdb252ad645c7b2f1057e5a8fb908 [2024-11-09 06:55:26,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:55:26,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:55:26,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:55:26,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:55:26,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:55:26,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:55:26" (1/1) ... [2024-11-09 06:55:26,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d10f1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:26, skipping insertion in model container [2024-11-09 06:55:26,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:55:26" (1/1) ... [2024-11-09 06:55:26,609 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:55:27,196 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_b9d5ec67-7f56-4d64-8c5f-9144ed074132/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[21939,21952] [2024-11-09 06:55:27,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:55:27,460 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:55:27,659 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_b9d5ec67-7f56-4d64-8c5f-9144ed074132/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[21939,21952] [2024-11-09 06:55:27,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:55:27,890 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:55:27,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27 WrapperNode [2024-11-09 06:55:27,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:55:27,892 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:55:27,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:55:27,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:55:27,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27" (1/1) ... [2024-11-09 06:55:27,948 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27" (1/1) ... [2024-11-09 06:55:28,089 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2883 [2024-11-09 06:55:28,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:55:28,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:55:28,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:55:28,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:55:28,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27" (1/1) ... [2024-11-09 06:55:28,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27" (1/1) ... [2024-11-09 06:55:28,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27" (1/1) ... [2024-11-09 06:55:28,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27" (1/1) ... [2024-11-09 06:55:28,170 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27" (1/1) ... [2024-11-09 06:55:28,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27" (1/1) ... [2024-11-09 06:55:28,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27" (1/1) ... [2024-11-09 06:55:28,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27" (1/1) ... [2024-11-09 06:55:28,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:55:28,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:55:28,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:55:28,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:55:28,256 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27" (1/1) ... [2024-11-09 06:55:28,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:55:28,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:55:28,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:55:28,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:55:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:55:28,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:55:28,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:55:28,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:55:28,637 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:55:28,640 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:55:31,934 INFO L? ?]: Removed 251 outVars from TransFormulas that were not future-live. [2024-11-09 06:55:31,935 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:55:32,992 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:55:32,992 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:55:32,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:55:32 BoogieIcfgContainer [2024-11-09 06:55:32,992 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:55:32,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:55:32,999 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:55:33,004 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:55:33,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:55:26" (1/3) ... [2024-11-09 06:55:33,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fad13f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:55:33, skipping insertion in model container [2024-11-09 06:55:33,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:55:27" (2/3) ... [2024-11-09 06:55:33,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fad13f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:55:33, skipping insertion in model container [2024-11-09 06:55:33,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:55:32" (3/3) ... [2024-11-09 06:55:33,011 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-09 06:55:33,034 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:55:33,036 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:55:33,157 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:55:33,166 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;@3ded8ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:55:33,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:55:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 617 states, 615 states have (on average 1.7235772357723578) internal successors, (1060), 616 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:33,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-09 06:55:33,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:33,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:33,214 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:33,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:33,220 INFO L85 PathProgramCache]: Analyzing trace with hash -160158349, now seen corresponding path program 1 times [2024-11-09 06:55:33,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:33,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793445818] [2024-11-09 06:55:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:33,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:34,370 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 06:55:34,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:34,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793445818] [2024-11-09 06:55:34,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793445818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:34,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:34,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:55:34,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508122627] [2024-11-09 06:55:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:34,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:55:34,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:34,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:55:34,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:55:34,422 INFO L87 Difference]: Start difference. First operand has 617 states, 615 states have (on average 1.7235772357723578) internal successors, (1060), 616 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:34,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:34,974 INFO L93 Difference]: Finished difference Result 865 states and 1459 transitions. [2024-11-09 06:55:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:55:34,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2024-11-09 06:55:34,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:35,014 INFO L225 Difference]: With dead ends: 865 [2024-11-09 06:55:35,016 INFO L226 Difference]: Without dead ends: 726 [2024-11-09 06:55:35,021 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 06:55:35,028 INFO L432 NwaCegarLoop]: 1163 mSDtfsCounter, 219 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:35,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 2106 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:55:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-09 06:55:35,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 724. [2024-11-09 06:55:35,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 1.6251728907330567) internal successors, (1175), 723 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:35,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1175 transitions. [2024-11-09 06:55:35,136 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1175 transitions. Word has length 192 [2024-11-09 06:55:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:35,137 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 1175 transitions. [2024-11-09 06:55:35,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:35,138 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1175 transitions. [2024-11-09 06:55:35,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-09 06:55:35,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:35,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:35,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:55:35,143 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:35,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:35,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1355256048, now seen corresponding path program 1 times [2024-11-09 06:55:35,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:35,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846545104] [2024-11-09 06:55:35,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:35,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:35,837 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 06:55:35,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:35,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846545104] [2024-11-09 06:55:35,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846545104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:35,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:35,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:55:35,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553748577] [2024-11-09 06:55:35,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:35,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:55:35,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:35,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:55:35,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:55:35,848 INFO L87 Difference]: Start difference. First operand 724 states and 1175 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:36,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:36,195 INFO L93 Difference]: Finished difference Result 1099 states and 1782 transitions. [2024-11-09 06:55:36,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:55:36,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2024-11-09 06:55:36,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:36,205 INFO L225 Difference]: With dead ends: 1099 [2024-11-09 06:55:36,205 INFO L226 Difference]: Without dead ends: 857 [2024-11-09 06:55:36,207 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 06:55:36,209 INFO L432 NwaCegarLoop]: 926 mSDtfsCounter, 207 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:36,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1802 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:55:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-11-09 06:55:36,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 855. [2024-11-09 06:55:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.620608899297424) internal successors, (1384), 854 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1384 transitions. [2024-11-09 06:55:36,262 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1384 transitions. Word has length 194 [2024-11-09 06:55:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:36,263 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1384 transitions. [2024-11-09 06:55:36,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1384 transitions. [2024-11-09 06:55:36,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-09 06:55:36,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:36,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:36,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:55:36,271 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:36,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 92001613, now seen corresponding path program 1 times [2024-11-09 06:55:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:36,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092167119] [2024-11-09 06:55:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:36,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:36,759 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 06:55:36,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:36,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092167119] [2024-11-09 06:55:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092167119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:36,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:36,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:55:36,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404482562] [2024-11-09 06:55:36,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:36,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:55:36,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:55:36,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:55:36,766 INFO L87 Difference]: Start difference. First operand 855 states and 1384 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:37,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:37,141 INFO L93 Difference]: Finished difference Result 1533 states and 2481 transitions. [2024-11-09 06:55:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:55:37,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2024-11-09 06:55:37,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:37,149 INFO L225 Difference]: With dead ends: 1533 [2024-11-09 06:55:37,149 INFO L226 Difference]: Without dead ends: 1161 [2024-11-09 06:55:37,154 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 06:55:37,157 INFO L432 NwaCegarLoop]: 1061 mSDtfsCounter, 206 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:37,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1950 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:55:37,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2024-11-09 06:55:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1159. [2024-11-09 06:55:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 1.620034542314335) internal successors, (1876), 1158 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:37,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1876 transitions. [2024-11-09 06:55:37,195 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1876 transitions. Word has length 198 [2024-11-09 06:55:37,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:37,196 INFO L471 AbstractCegarLoop]: Abstraction has 1159 states and 1876 transitions. [2024-11-09 06:55:37,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:37,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1876 transitions. [2024-11-09 06:55:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-09 06:55:37,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:37,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:37,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:55:37,201 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:37,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash 786777755, now seen corresponding path program 1 times [2024-11-09 06:55:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:37,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773600392] [2024-11-09 06:55:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:37,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:37,721 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 06:55:37,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:37,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773600392] [2024-11-09 06:55:37,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773600392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:37,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:37,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:55:37,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954174157] [2024-11-09 06:55:37,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:37,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:55:37,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:37,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:55:37,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:55:37,727 INFO L87 Difference]: Start difference. First operand 1159 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:38,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:38,062 INFO L93 Difference]: Finished difference Result 2230 states and 3605 transitions. [2024-11-09 06:55:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:55:38,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2024-11-09 06:55:38,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:38,071 INFO L225 Difference]: With dead ends: 2230 [2024-11-09 06:55:38,071 INFO L226 Difference]: Without dead ends: 1554 [2024-11-09 06:55:38,073 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 06:55:38,078 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 205 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:38,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1818 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:55:38,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2024-11-09 06:55:38,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1552. [2024-11-09 06:55:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1551 states have (on average 1.6170212765957446) internal successors, (2508), 1551 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:38,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2508 transitions. [2024-11-09 06:55:38,134 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2508 transitions. Word has length 200 [2024-11-09 06:55:38,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:38,135 INFO L471 AbstractCegarLoop]: Abstraction has 1552 states and 2508 transitions. [2024-11-09 06:55:38,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:38,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2508 transitions. [2024-11-09 06:55:38,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-09 06:55:38,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:38,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:38,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:55:38,141 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:38,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:38,142 INFO L85 PathProgramCache]: Analyzing trace with hash 945916318, now seen corresponding path program 1 times [2024-11-09 06:55:38,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:38,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069394436] [2024-11-09 06:55:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:38,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:38,533 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 06:55:38,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:38,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069394436] [2024-11-09 06:55:38,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069394436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:38,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:38,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:55:38,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641777039] [2024-11-09 06:55:38,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:38,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:55:38,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:38,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:55:38,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:55:38,539 INFO L87 Difference]: Start difference. First operand 1552 states and 2508 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:38,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:38,835 INFO L93 Difference]: Finished difference Result 3446 states and 5573 transitions. [2024-11-09 06:55:38,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:55:38,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2024-11-09 06:55:38,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:38,846 INFO L225 Difference]: With dead ends: 3446 [2024-11-09 06:55:38,846 INFO L226 Difference]: Without dead ends: 2400 [2024-11-09 06:55:38,848 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 06:55:38,850 INFO L432 NwaCegarLoop]: 1025 mSDtfsCounter, 199 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:38,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1915 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:55:38,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2024-11-09 06:55:38,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2398. [2024-11-09 06:55:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 1.6157697121401753) internal successors, (3873), 2397 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3873 transitions. [2024-11-09 06:55:38,941 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3873 transitions. Word has length 204 [2024-11-09 06:55:38,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:38,942 INFO L471 AbstractCegarLoop]: Abstraction has 2398 states and 3873 transitions. [2024-11-09 06:55:38,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3873 transitions. [2024-11-09 06:55:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-09 06:55:38,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:38,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:38,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:55:38,947 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:38,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:38,948 INFO L85 PathProgramCache]: Analyzing trace with hash 277019517, now seen corresponding path program 1 times [2024-11-09 06:55:38,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:38,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848749681] [2024-11-09 06:55:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:38,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:39,368 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 06:55:39,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:39,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848749681] [2024-11-09 06:55:39,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848749681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:39,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:39,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:55:39,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661414357] [2024-11-09 06:55:39,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:39,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:55:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:39,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:55:39,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:55:39,372 INFO L87 Difference]: Start difference. First operand 2398 states and 3873 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:39,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:39,673 INFO L93 Difference]: Finished difference Result 5359 states and 8653 transitions. [2024-11-09 06:55:39,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:55:39,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2024-11-09 06:55:39,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:39,694 INFO L225 Difference]: With dead ends: 5359 [2024-11-09 06:55:39,695 INFO L226 Difference]: Without dead ends: 3467 [2024-11-09 06:55:39,698 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 06:55:39,700 INFO L432 NwaCegarLoop]: 936 mSDtfsCounter, 198 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:39,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1820 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:55:39,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3467 states. [2024-11-09 06:55:39,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3467 to 3465. [2024-11-09 06:55:39,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3465 states, 3464 states have (on average 1.6131639722863742) internal successors, (5588), 3464 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 5588 transitions. [2024-11-09 06:55:39,807 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 5588 transitions. Word has length 206 [2024-11-09 06:55:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:39,808 INFO L471 AbstractCegarLoop]: Abstraction has 3465 states and 5588 transitions. [2024-11-09 06:55:39,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 5588 transitions. [2024-11-09 06:55:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-09 06:55:39,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:39,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:39,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:55:39,813 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:39,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:39,813 INFO L85 PathProgramCache]: Analyzing trace with hash -412576998, now seen corresponding path program 1 times [2024-11-09 06:55:39,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:39,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126120288] [2024-11-09 06:55:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:39,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:40,161 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 06:55:40,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:40,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126120288] [2024-11-09 06:55:40,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126120288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:40,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:40,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:55:40,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316929893] [2024-11-09 06:55:40,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:40,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:55:40,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:40,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:55:40,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:55:40,166 INFO L87 Difference]: Start difference. First operand 3465 states and 5588 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:40,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:40,483 INFO L93 Difference]: Finished difference Result 8743 states and 14113 transitions. [2024-11-09 06:55:40,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:55:40,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2024-11-09 06:55:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:40,506 INFO L225 Difference]: With dead ends: 8743 [2024-11-09 06:55:40,506 INFO L226 Difference]: Without dead ends: 5807 [2024-11-09 06:55:40,512 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 06:55:40,515 INFO L432 NwaCegarLoop]: 989 mSDtfsCounter, 192 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:40,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1880 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:55:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2024-11-09 06:55:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5805. [2024-11-09 06:55:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5805 states, 5804 states have (on average 1.6109579600275672) internal successors, (9350), 5804 states have internal predecessors, (9350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5805 states to 5805 states and 9350 transitions. [2024-11-09 06:55:40,665 INFO L78 Accepts]: Start accepts. Automaton has 5805 states and 9350 transitions. Word has length 210 [2024-11-09 06:55:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:40,666 INFO L471 AbstractCegarLoop]: Abstraction has 5805 states and 9350 transitions. [2024-11-09 06:55:40,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:40,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5805 states and 9350 transitions. [2024-11-09 06:55:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-09 06:55:40,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:40,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:40,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:55:40,671 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:40,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:40,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1793438153, now seen corresponding path program 1 times [2024-11-09 06:55:40,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:40,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309922940] [2024-11-09 06:55:40,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:40,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:41,051 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 06:55:41,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:41,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309922940] [2024-11-09 06:55:41,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309922940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:41,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:41,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:55:41,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082230191] [2024-11-09 06:55:41,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:41,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:55:41,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:41,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:55:41,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:55:41,055 INFO L87 Difference]: Start difference. First operand 5805 states and 9350 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:41,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:41,385 INFO L93 Difference]: Finished difference Result 14040 states and 22617 transitions. [2024-11-09 06:55:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:55:41,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2024-11-09 06:55:41,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:41,419 INFO L225 Difference]: With dead ends: 14040 [2024-11-09 06:55:41,420 INFO L226 Difference]: Without dead ends: 8764 [2024-11-09 06:55:41,427 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 06:55:41,428 INFO L432 NwaCegarLoop]: 937 mSDtfsCounter, 191 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:41,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1822 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:55:41,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8764 states. [2024-11-09 06:55:41,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8764 to 8762. [2024-11-09 06:55:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8762 states, 8761 states have (on average 1.6084921812578472) internal successors, (14092), 8761 states have internal predecessors, (14092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:41,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8762 states to 8762 states and 14092 transitions. [2024-11-09 06:55:41,622 INFO L78 Accepts]: Start accepts. Automaton has 8762 states and 14092 transitions. Word has length 212 [2024-11-09 06:55:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:41,623 INFO L471 AbstractCegarLoop]: Abstraction has 8762 states and 14092 transitions. [2024-11-09 06:55:41,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:41,623 INFO L276 IsEmpty]: Start isEmpty. Operand 8762 states and 14092 transitions. [2024-11-09 06:55:41,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-09 06:55:41,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:41,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:41,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 06:55:41,627 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:41,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:41,628 INFO L85 PathProgramCache]: Analyzing trace with hash 415676812, now seen corresponding path program 1 times [2024-11-09 06:55:41,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:41,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243248338] [2024-11-09 06:55:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:41,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:41,979 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 06:55:41,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:41,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243248338] [2024-11-09 06:55:41,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243248338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:41,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:41,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:55:41,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502218762] [2024-11-09 06:55:41,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:41,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:55:41,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:41,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:55:41,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:55:41,984 INFO L87 Difference]: Start difference. First operand 8762 states and 14092 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:42,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:42,398 INFO L93 Difference]: Finished difference Result 23400 states and 37665 transitions. [2024-11-09 06:55:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:55:42,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-09 06:55:42,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:42,438 INFO L225 Difference]: With dead ends: 23400 [2024-11-09 06:55:42,439 INFO L226 Difference]: Without dead ends: 15190 [2024-11-09 06:55:42,455 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 06:55:42,457 INFO L432 NwaCegarLoop]: 953 mSDtfsCounter, 185 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:42,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1845 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:55:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15190 states. [2024-11-09 06:55:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15190 to 15188. [2024-11-09 06:55:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15188 states, 15187 states have (on average 1.6052544939751103) internal successors, (24379), 15187 states have internal predecessors, (24379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15188 states to 15188 states and 24379 transitions. [2024-11-09 06:55:42,828 INFO L78 Accepts]: Start accepts. Automaton has 15188 states and 24379 transitions. Word has length 216 [2024-11-09 06:55:42,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:42,829 INFO L471 AbstractCegarLoop]: Abstraction has 15188 states and 24379 transitions. [2024-11-09 06:55:42,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:42,830 INFO L276 IsEmpty]: Start isEmpty. Operand 15188 states and 24379 transitions. [2024-11-09 06:55:42,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-09 06:55:42,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:42,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:42,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 06:55:42,834 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:42,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:42,838 INFO L85 PathProgramCache]: Analyzing trace with hash -859099888, now seen corresponding path program 1 times [2024-11-09 06:55:42,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:42,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035141518] [2024-11-09 06:55:42,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:42,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:43,231 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 06:55:43,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:43,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035141518] [2024-11-09 06:55:43,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035141518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:43,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:43,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:55:43,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851212306] [2024-11-09 06:55:43,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:43,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:55:43,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:43,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:55:43,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:55:43,238 INFO L87 Difference]: Start difference. First operand 15188 states and 24379 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:43,621 INFO L93 Difference]: Finished difference Result 38057 states and 61109 transitions. [2024-11-09 06:55:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:55:43,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2024-11-09 06:55:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:43,677 INFO L225 Difference]: With dead ends: 38057 [2024-11-09 06:55:43,677 INFO L226 Difference]: Without dead ends: 23421 [2024-11-09 06:55:43,697 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 06:55:43,697 INFO L432 NwaCegarLoop]: 938 mSDtfsCounter, 184 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:43,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1824 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:55:43,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23421 states. [2024-11-09 06:55:44,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23421 to 23419. [2024-11-09 06:55:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23419 states, 23418 states have (on average 1.6028695874967973) internal successors, (37536), 23418 states have internal predecessors, (37536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:44,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23419 states to 23419 states and 37536 transitions. [2024-11-09 06:55:44,249 INFO L78 Accepts]: Start accepts. Automaton has 23419 states and 37536 transitions. Word has length 218 [2024-11-09 06:55:44,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:44,250 INFO L471 AbstractCegarLoop]: Abstraction has 23419 states and 37536 transitions. [2024-11-09 06:55:44,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:44,251 INFO L276 IsEmpty]: Start isEmpty. Operand 23419 states and 37536 transitions. [2024-11-09 06:55:44,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-09 06:55:44,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:44,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:44,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 06:55:44,255 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:44,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:44,256 INFO L85 PathProgramCache]: Analyzing trace with hash -926029843, now seen corresponding path program 1 times [2024-11-09 06:55:44,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:44,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139856612] [2024-11-09 06:55:44,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:44,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:44,953 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 06:55:44,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139856612] [2024-11-09 06:55:44,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139856612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:44,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:44,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:55:44,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516925309] [2024-11-09 06:55:44,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:44,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:55:44,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:44,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:55:44,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:55:44,957 INFO L87 Difference]: Start difference. First operand 23419 states and 37536 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:46,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:46,554 INFO L93 Difference]: Finished difference Result 57656 states and 92288 transitions. [2024-11-09 06:55:46,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:55:46,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2024-11-09 06:55:46,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:46,772 INFO L225 Difference]: With dead ends: 57656 [2024-11-09 06:55:46,773 INFO L226 Difference]: Without dead ends: 34812 [2024-11-09 06:55:46,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:55:46,811 INFO L432 NwaCegarLoop]: 945 mSDtfsCounter, 2006 mSDsluCounter, 8272 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 9217 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:46,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2006 Valid, 9217 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:55:46,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34812 states. [2024-11-09 06:55:47,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34812 to 34794. [2024-11-09 06:55:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34794 states, 34793 states have (on average 1.5943436898226655) internal successors, (55472), 34793 states have internal predecessors, (55472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34794 states to 34794 states and 55472 transitions. [2024-11-09 06:55:47,701 INFO L78 Accepts]: Start accepts. Automaton has 34794 states and 55472 transitions. Word has length 222 [2024-11-09 06:55:47,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:47,702 INFO L471 AbstractCegarLoop]: Abstraction has 34794 states and 55472 transitions. [2024-11-09 06:55:47,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:47,702 INFO L276 IsEmpty]: Start isEmpty. Operand 34794 states and 55472 transitions. [2024-11-09 06:55:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-09 06:55:47,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:47,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:47,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 06:55:47,707 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:47,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:47,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1286226212, now seen corresponding path program 1 times [2024-11-09 06:55:47,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:47,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909365187] [2024-11-09 06:55:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:47,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:48,140 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 06:55:48,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:48,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909365187] [2024-11-09 06:55:48,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909365187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:48,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:48,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:55:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918467261] [2024-11-09 06:55:48,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:48,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:55:48,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:48,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:55:48,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:55:48,145 INFO L87 Difference]: Start difference. First operand 34794 states and 55472 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:48,855 INFO L93 Difference]: Finished difference Result 69015 states and 110022 transitions. [2024-11-09 06:55:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:55:48,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2024-11-09 06:55:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:48,922 INFO L225 Difference]: With dead ends: 69015 [2024-11-09 06:55:48,922 INFO L226 Difference]: Without dead ends: 34796 [2024-11-09 06:55:48,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:55:48,955 INFO L432 NwaCegarLoop]: 928 mSDtfsCounter, 388 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:48,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 2742 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:55:48,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34796 states. [2024-11-09 06:55:49,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34796 to 34794. [2024-11-09 06:55:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34794 states, 34793 states have (on average 1.5915845141264047) internal successors, (55376), 34793 states have internal predecessors, (55376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34794 states to 34794 states and 55376 transitions. [2024-11-09 06:55:49,825 INFO L78 Accepts]: Start accepts. Automaton has 34794 states and 55376 transitions. Word has length 223 [2024-11-09 06:55:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:49,825 INFO L471 AbstractCegarLoop]: Abstraction has 34794 states and 55376 transitions. [2024-11-09 06:55:49,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand 34794 states and 55376 transitions. [2024-11-09 06:55:49,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-09 06:55:49,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:49,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:49,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 06:55:49,832 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:49,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:49,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1151245204, now seen corresponding path program 1 times [2024-11-09 06:55:49,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:49,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086304168] [2024-11-09 06:55:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:49,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:50,478 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 06:55:50,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:50,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086304168] [2024-11-09 06:55:50,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086304168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:50,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:50,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:55:50,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219316505] [2024-11-09 06:55:50,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:50,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:55:50,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:55:50,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:55:50,482 INFO L87 Difference]: Start difference. First operand 34794 states and 55376 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:51,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:51,159 INFO L93 Difference]: Finished difference Result 69015 states and 109830 transitions. [2024-11-09 06:55:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:55:51,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2024-11-09 06:55:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:51,242 INFO L225 Difference]: With dead ends: 69015 [2024-11-09 06:55:51,243 INFO L226 Difference]: Without dead ends: 34796 [2024-11-09 06:55:51,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:55:51,264 INFO L432 NwaCegarLoop]: 932 mSDtfsCounter, 396 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:51,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 2748 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:55:51,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34796 states. [2024-11-09 06:55:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34796 to 34794. [2024-11-09 06:55:51,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34794 states, 34793 states have (on average 1.588825338430144) internal successors, (55280), 34793 states have internal predecessors, (55280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34794 states to 34794 states and 55280 transitions. [2024-11-09 06:55:51,827 INFO L78 Accepts]: Start accepts. Automaton has 34794 states and 55280 transitions. Word has length 224 [2024-11-09 06:55:51,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:51,827 INFO L471 AbstractCegarLoop]: Abstraction has 34794 states and 55280 transitions. [2024-11-09 06:55:51,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:51,828 INFO L276 IsEmpty]: Start isEmpty. Operand 34794 states and 55280 transitions. [2024-11-09 06:55:51,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-09 06:55:51,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:51,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:51,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 06:55:51,832 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:51,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:51,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1266359275, now seen corresponding path program 1 times [2024-11-09 06:55:51,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:51,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077591132] [2024-11-09 06:55:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:51,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:52,420 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 06:55:52,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:52,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077591132] [2024-11-09 06:55:52,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077591132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:52,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:52,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:55:52,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651497181] [2024-11-09 06:55:52,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:52,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:55:52,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:52,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:55:52,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:55:52,424 INFO L87 Difference]: Start difference. First operand 34794 states and 55280 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:53,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:53,244 INFO L93 Difference]: Finished difference Result 69015 states and 109638 transitions. [2024-11-09 06:55:53,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:55:53,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2024-11-09 06:55:53,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:53,310 INFO L225 Difference]: With dead ends: 69015 [2024-11-09 06:55:53,311 INFO L226 Difference]: Without dead ends: 34796 [2024-11-09 06:55:53,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:55:53,329 INFO L432 NwaCegarLoop]: 933 mSDtfsCounter, 394 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:53,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 2751 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:55:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34796 states. [2024-11-09 06:55:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34796 to 34794. [2024-11-09 06:55:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34794 states, 34793 states have (on average 1.5860661627338832) internal successors, (55184), 34793 states have internal predecessors, (55184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:53,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34794 states to 34794 states and 55184 transitions. [2024-11-09 06:55:53,915 INFO L78 Accepts]: Start accepts. Automaton has 34794 states and 55184 transitions. Word has length 225 [2024-11-09 06:55:53,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:53,916 INFO L471 AbstractCegarLoop]: Abstraction has 34794 states and 55184 transitions. [2024-11-09 06:55:53,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 34794 states and 55184 transitions. [2024-11-09 06:55:53,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-09 06:55:53,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:53,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:53,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 06:55:53,921 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:53,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:53,922 INFO L85 PathProgramCache]: Analyzing trace with hash 544486203, now seen corresponding path program 1 times [2024-11-09 06:55:53,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:53,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924092288] [2024-11-09 06:55:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:53,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:54,485 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 06:55:54,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:54,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924092288] [2024-11-09 06:55:54,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924092288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:54,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:54,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:55:54,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803484222] [2024-11-09 06:55:54,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:54,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:55:54,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:54,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:55:54,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:55:54,489 INFO L87 Difference]: Start difference. First operand 34794 states and 55184 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:55,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:55,123 INFO L93 Difference]: Finished difference Result 69015 states and 109446 transitions. [2024-11-09 06:55:55,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:55:55,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2024-11-09 06:55:55,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:55,184 INFO L225 Difference]: With dead ends: 69015 [2024-11-09 06:55:55,184 INFO L226 Difference]: Without dead ends: 34796 [2024-11-09 06:55:55,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:55:55,210 INFO L432 NwaCegarLoop]: 934 mSDtfsCounter, 392 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:55,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 2754 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:55:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34796 states. [2024-11-09 06:55:55,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34796 to 34794. [2024-11-09 06:55:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34794 states, 34793 states have (on average 1.5833069870376224) internal successors, (55088), 34793 states have internal predecessors, (55088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34794 states to 34794 states and 55088 transitions. [2024-11-09 06:55:55,994 INFO L78 Accepts]: Start accepts. Automaton has 34794 states and 55088 transitions. Word has length 226 [2024-11-09 06:55:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:55,994 INFO L471 AbstractCegarLoop]: Abstraction has 34794 states and 55088 transitions. [2024-11-09 06:55:55,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 34794 states and 55088 transitions. [2024-11-09 06:55:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-09 06:55:55,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:55,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:55,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 06:55:55,997 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:55,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:55,998 INFO L85 PathProgramCache]: Analyzing trace with hash -354184526, now seen corresponding path program 1 times [2024-11-09 06:55:55,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:55,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033240601] [2024-11-09 06:55:55,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:55,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:56,397 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 06:55:56,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:56,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033240601] [2024-11-09 06:55:56,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033240601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:56,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:56,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:55:56,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246535709] [2024-11-09 06:55:56,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:56,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:55:56,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:56,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:55:56,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:55:56,400 INFO L87 Difference]: Start difference. First operand 34794 states and 55088 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:56,875 INFO L93 Difference]: Finished difference Result 69015 states and 109254 transitions. [2024-11-09 06:55:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:55:56,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2024-11-09 06:55:56,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:56,918 INFO L225 Difference]: With dead ends: 69015 [2024-11-09 06:55:56,918 INFO L226 Difference]: Without dead ends: 34796 [2024-11-09 06:55:56,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:55:56,941 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 390 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:56,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 2757 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:55:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34796 states. [2024-11-09 06:55:57,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34796 to 34794. [2024-11-09 06:55:57,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34794 states, 34793 states have (on average 1.5805478113413618) internal successors, (54992), 34793 states have internal predecessors, (54992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:57,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34794 states to 34794 states and 54992 transitions. [2024-11-09 06:55:57,557 INFO L78 Accepts]: Start accepts. Automaton has 34794 states and 54992 transitions. Word has length 227 [2024-11-09 06:55:57,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:57,557 INFO L471 AbstractCegarLoop]: Abstraction has 34794 states and 54992 transitions. [2024-11-09 06:55:57,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:57,558 INFO L276 IsEmpty]: Start isEmpty. Operand 34794 states and 54992 transitions. [2024-11-09 06:55:57,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-09 06:55:57,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:57,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:57,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 06:55:57,560 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:57,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:57,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1708759139, now seen corresponding path program 1 times [2024-11-09 06:55:57,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:57,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91967034] [2024-11-09 06:55:57,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:57,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:58,487 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 06:55:58,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:58,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91967034] [2024-11-09 06:55:58,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91967034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:58,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:55:58,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:55:58,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588395492] [2024-11-09 06:55:58,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:58,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:55:58,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:58,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:55:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:55:58,489 INFO L87 Difference]: Start difference. First operand 34794 states and 54992 transitions. Second operand has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:55:59,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:59,303 INFO L93 Difference]: Finished difference Result 69015 states and 109062 transitions. [2024-11-09 06:55:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:55:59,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2024-11-09 06:55:59,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:59,334 INFO L225 Difference]: With dead ends: 69015 [2024-11-09 06:55:59,335 INFO L226 Difference]: Without dead ends: 34796 [2024-11-09 06:55:59,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:55:59,355 INFO L432 NwaCegarLoop]: 927 mSDtfsCounter, 662 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:59,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 4519 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:55:59,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34796 states. [2024-11-09 06:56:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34796 to 34794. [2024-11-09 06:56:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34794 states, 34793 states have (on average 1.5796280861092749) internal successors, (54960), 34793 states have internal predecessors, (54960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34794 states to 34794 states and 54960 transitions. [2024-11-09 06:56:00,147 INFO L78 Accepts]: Start accepts. Automaton has 34794 states and 54960 transitions. Word has length 229 [2024-11-09 06:56:00,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:56:00,148 INFO L471 AbstractCegarLoop]: Abstraction has 34794 states and 54960 transitions. [2024-11-09 06:56:00,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 34794 states and 54960 transitions. [2024-11-09 06:56:00,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-09 06:56:00,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:56:00,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:00,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 06:56:00,151 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:56:00,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:56:00,152 INFO L85 PathProgramCache]: Analyzing trace with hash -356927027, now seen corresponding path program 1 times [2024-11-09 06:56:00,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:56:00,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289507980] [2024-11-09 06:56:00,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:56:00,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:56:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:56:01,154 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 06:56:01,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:56:01,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289507980] [2024-11-09 06:56:01,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289507980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:56:01,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:56:01,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:56:01,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180039203] [2024-11-09 06:56:01,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:56:01,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:56:01,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:56:01,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:56:01,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:56:01,157 INFO L87 Difference]: Start difference. First operand 34794 states and 54960 transitions. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:02,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:56:02,149 INFO L93 Difference]: Finished difference Result 85544 states and 134771 transitions. [2024-11-09 06:56:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:56:02,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2024-11-09 06:56:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:56:02,204 INFO L225 Difference]: With dead ends: 85544 [2024-11-09 06:56:02,204 INFO L226 Difference]: Without dead ends: 51325 [2024-11-09 06:56:02,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:56:02,226 INFO L432 NwaCegarLoop]: 932 mSDtfsCounter, 495 mSDsluCounter, 3628 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:56:02,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 4560 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:56:02,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51325 states. [2024-11-09 06:56:02,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51325 to 51323. [2024-11-09 06:56:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51323 states, 51322 states have (on average 1.5721328085421458) internal successors, (80685), 51322 states have internal predecessors, (80685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51323 states to 51323 states and 80685 transitions. [2024-11-09 06:56:02,965 INFO L78 Accepts]: Start accepts. Automaton has 51323 states and 80685 transitions. Word has length 232 [2024-11-09 06:56:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:56:02,966 INFO L471 AbstractCegarLoop]: Abstraction has 51323 states and 80685 transitions. [2024-11-09 06:56:02,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:02,966 INFO L276 IsEmpty]: Start isEmpty. Operand 51323 states and 80685 transitions. [2024-11-09 06:56:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-09 06:56:02,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:56:02,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:02,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 06:56:02,968 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:56:02,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:56:02,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1908045338, now seen corresponding path program 1 times [2024-11-09 06:56:02,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:56:02,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591817593] [2024-11-09 06:56:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:56:02,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:56:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:56:04,686 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 06:56:04,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:56:04,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591817593] [2024-11-09 06:56:04,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591817593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:56:04,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:56:04,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:56:04,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027190053] [2024-11-09 06:56:04,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:56:04,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:56:04,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:56:04,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:56:04,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:56:04,688 INFO L87 Difference]: Start difference. First operand 51323 states and 80685 transitions. Second operand has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:05,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:56:05,624 INFO L93 Difference]: Finished difference Result 51357 states and 80732 transitions. [2024-11-09 06:56:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:56:05,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2024-11-09 06:56:05,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:56:05,691 INFO L225 Difference]: With dead ends: 51357 [2024-11-09 06:56:05,691 INFO L226 Difference]: Without dead ends: 51355 [2024-11-09 06:56:05,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:56:05,704 INFO L432 NwaCegarLoop]: 936 mSDtfsCounter, 162 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 3904 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:56:05,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 3904 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:56:05,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51355 states. [2024-11-09 06:56:06,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51355 to 51353. [2024-11-09 06:56:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51353 states, 51352 states have (on average 1.5705133198317496) internal successors, (80649), 51352 states have internal predecessors, (80649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51353 states to 51353 states and 80649 transitions. [2024-11-09 06:56:06,459 INFO L78 Accepts]: Start accepts. Automaton has 51353 states and 80649 transitions. Word has length 233 [2024-11-09 06:56:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:56:06,460 INFO L471 AbstractCegarLoop]: Abstraction has 51353 states and 80649 transitions. [2024-11-09 06:56:06,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand 51353 states and 80649 transitions. [2024-11-09 06:56:06,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-09 06:56:06,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:56:06,463 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:06,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 06:56:06,463 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:56:06,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:56:06,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1120475958, now seen corresponding path program 1 times [2024-11-09 06:56:06,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:56:06,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761743637] [2024-11-09 06:56:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:56:06,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:56:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:56:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:56:13,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:56:13,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761743637] [2024-11-09 06:56:13,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761743637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:56:13,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612329583] [2024-11-09 06:56:13,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:56:13,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:56:13,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:56:13,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:56:13,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:56:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:56:13,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 06:56:13,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:56:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:56:16,174 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:56:16,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612329583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:56:16,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:56:16,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [21] total 23 [2024-11-09 06:56:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269757573] [2024-11-09 06:56:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:56:16,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:56:16,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:56:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:56:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2024-11-09 06:56:16,177 INFO L87 Difference]: Start difference. First operand 51353 states and 80649 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:17,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:56:17,535 INFO L93 Difference]: Finished difference Result 254420 states and 399708 transitions. [2024-11-09 06:56:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:56:17,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2024-11-09 06:56:17,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:56:17,785 INFO L225 Difference]: With dead ends: 254420 [2024-11-09 06:56:17,785 INFO L226 Difference]: Without dead ends: 203080 [2024-11-09 06:56:17,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2024-11-09 06:56:17,843 INFO L432 NwaCegarLoop]: 1091 mSDtfsCounter, 3292 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 3035 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:56:17,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3292 Valid, 3035 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:56:17,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203080 states. [2024-11-09 06:56:19,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203080 to 151751. [2024-11-09 06:56:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151751 states, 151750 states have (on average 1.5677232289950576) internal successors, (237902), 151750 states have internal predecessors, (237902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151751 states to 151751 states and 237902 transitions. [2024-11-09 06:56:19,910 INFO L78 Accepts]: Start accepts. Automaton has 151751 states and 237902 transitions. Word has length 242 [2024-11-09 06:56:19,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:56:19,911 INFO L471 AbstractCegarLoop]: Abstraction has 151751 states and 237902 transitions. [2024-11-09 06:56:19,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:19,911 INFO L276 IsEmpty]: Start isEmpty. Operand 151751 states and 237902 transitions. [2024-11-09 06:56:19,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-09 06:56:19,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:56:19,914 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:19,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:56:20,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d5ec67-7f56-4d64-8c5f-9144ed074132/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:56:20,116 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:56:20,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:56:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1382935173, now seen corresponding path program 1 times [2024-11-09 06:56:20,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:56:20,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882016991] [2024-11-09 06:56:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:56:20,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:56:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:56:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 06:56:20,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:56:20,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882016991] [2024-11-09 06:56:20,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882016991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:56:20,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:56:20,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:56:20,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303776218] [2024-11-09 06:56:20,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:56:20,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:56:20,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:56:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:56:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:56:20,486 INFO L87 Difference]: Start difference. First operand 151751 states and 237902 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:56:23,966 INFO L93 Difference]: Finished difference Result 449835 states and 705534 transitions. [2024-11-09 06:56:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:56:23,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2024-11-09 06:56:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:56:24,430 INFO L225 Difference]: With dead ends: 449835 [2024-11-09 06:56:24,430 INFO L226 Difference]: Without dead ends: 298272 [2024-11-09 06:56:24,527 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 06:56:24,528 INFO L432 NwaCegarLoop]: 1766 mSDtfsCounter, 757 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:56:24,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 2670 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:56:24,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298272 states. [2024-11-09 06:56:28,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298272 to 298270. [2024-11-09 06:56:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298270 states, 298269 states have (on average 1.5644703271208205) internal successors, (466633), 298269 states have internal predecessors, (466633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:29,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298270 states to 298270 states and 466633 transitions. [2024-11-09 06:56:29,402 INFO L78 Accepts]: Start accepts. Automaton has 298270 states and 466633 transitions. Word has length 244 [2024-11-09 06:56:29,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:56:29,402 INFO L471 AbstractCegarLoop]: Abstraction has 298270 states and 466633 transitions. [2024-11-09 06:56:29,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:56:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand 298270 states and 466633 transitions. [2024-11-09 06:56:29,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-09 06:56:29,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:56:29,410 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:29,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 06:56:29,410 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:56:29,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:56:29,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1594413527, now seen corresponding path program 1 times [2024-11-09 06:56:29,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:56:29,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453556648] [2024-11-09 06:56:29,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:56:29,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:56:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:56:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 06:56:29,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:56:29,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453556648] [2024-11-09 06:56:29,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453556648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:56:29,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:56:29,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:56:29,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067745772] [2024-11-09 06:56:29,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:56:29,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:56:29,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:56:29,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:56:29,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:56:29,626 INFO L87 Difference]: Start difference. First operand 298270 states and 466633 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)