./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/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_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/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_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/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 6c42bca5197a9d3789842b36ec154209e56c2a7008fcac4a7338bcb4050288a1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:17:29,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:17:29,973 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 01:17:29,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:17:29,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:17:30,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:17:30,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:17:30,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:17:30,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:17:30,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:17:30,031 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:17:30,032 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:17:30,032 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:17:30,033 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:17:30,033 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:17:30,036 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:17:30,036 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:17:30,037 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:17:30,037 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:17:30,037 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:17:30,038 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:17:30,040 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:17:30,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:17:30,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:17:30,045 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:17:30,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:17:30,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:17:30,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:17:30,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:17:30,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:17:30,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:17:30,047 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:17:30,048 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:17:30,048 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:17:30,048 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:17:30,049 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:17:30,049 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:17:30,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:17:30,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:17:30,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:17:30,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:17:30,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:17:30,052 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:17:30,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:17:30,052 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:17:30,053 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:17:30,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:17:30,053 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_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c42bca5197a9d3789842b36ec154209e56c2a7008fcac4a7338bcb4050288a1 [2024-11-09 01:17:30,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:17:30,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:17:30,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:17:30,356 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:17:30,357 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:17:30,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c Unable to find full path for "g++" [2024-11-09 01:17:32,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:17:32,893 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:17:32,893 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-11-09 01:17:32,926 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/bin/utaipan-verify-YMUCfTKeje/data/0ac07520d/a385f28f1a234c43833dde54ad164eea/FLAGe615d5704 [2024-11-09 01:17:33,076 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/bin/utaipan-verify-YMUCfTKeje/data/0ac07520d/a385f28f1a234c43833dde54ad164eea [2024-11-09 01:17:33,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:17:33,080 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:17:33,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:17:33,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:17:33,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:17:33,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:17:33" (1/1) ... [2024-11-09 01:17:33,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23650ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:33, skipping insertion in model container [2024-11-09 01:17:33,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:17:33" (1/1) ... [2024-11-09 01:17:33,193 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:17:33,802 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_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[24502,24515] [2024-11-09 01:17:33,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:17:33,993 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:17:34,266 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_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[24502,24515] [2024-11-09 01:17:34,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:17:34,439 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:17:34,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34 WrapperNode [2024-11-09 01:17:34,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:17:34,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:17:34,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:17:34,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:17:34,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34" (1/1) ... [2024-11-09 01:17:34,476 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34" (1/1) ... [2024-11-09 01:17:34,593 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2318 [2024-11-09 01:17:34,594 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:17:34,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:17:34,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:17:34,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:17:34,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34" (1/1) ... [2024-11-09 01:17:34,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34" (1/1) ... [2024-11-09 01:17:34,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34" (1/1) ... [2024-11-09 01:17:34,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34" (1/1) ... [2024-11-09 01:17:34,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34" (1/1) ... [2024-11-09 01:17:34,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34" (1/1) ... [2024-11-09 01:17:34,684 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34" (1/1) ... [2024-11-09 01:17:34,692 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34" (1/1) ... [2024-11-09 01:17:34,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:17:34,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:17:34,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:17:34,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:17:34,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34" (1/1) ... [2024-11-09 01:17:34,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:17:34,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:17:34,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:17:34,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b347a7-0e89-4fd4-b56d-ee31fdcbcffd/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:17:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:17:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:17:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:17:34,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:17:35,042 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:17:35,048 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:17:37,830 INFO L? ?]: Removed 159 outVars from TransFormulas that were not future-live. [2024-11-09 01:17:37,830 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:17:38,484 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:17:38,487 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 01:17:38,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:17:38 BoogieIcfgContainer [2024-11-09 01:17:38,490 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:17:38,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:17:38,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:17:38,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:17:38,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:17:33" (1/3) ... [2024-11-09 01:17:38,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d14071d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:17:38, skipping insertion in model container [2024-11-09 01:17:38,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:17:34" (2/3) ... [2024-11-09 01:17:38,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d14071d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:17:38, skipping insertion in model container [2024-11-09 01:17:38,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:17:38" (3/3) ... [2024-11-09 01:17:38,501 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-11-09 01:17:38,521 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:17:38,523 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 01:17:38,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:17:38,634 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;@75ecce3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:17:38,634 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 01:17:38,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 471 states, 469 states have (on average 1.7036247334754797) internal successors, (799), 470 states have internal predecessors, (799), 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 01:17:38,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-09 01:17:38,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:17:38,668 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] [2024-11-09 01:17:38,669 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:17:38,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:17:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1164359822, now seen corresponding path program 1 times [2024-11-09 01:17:38,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:17:38,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071173802] [2024-11-09 01:17:38,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:17:38,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:17:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:41,187 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 01:17:41,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:17:41,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071173802] [2024-11-09 01:17:41,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071173802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:17:41,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:17:41,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:17:41,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45046322] [2024-11-09 01:17:41,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:17:41,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:17:41,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:17:41,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:17:41,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:17:41,239 INFO L87 Difference]: Start difference. First operand has 471 states, 469 states have (on average 1.7036247334754797) internal successors, (799), 470 states have internal predecessors, (799), 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 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 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 01:17:41,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:17:41,955 INFO L93 Difference]: Finished difference Result 2283 states and 3884 transitions. [2024-11-09 01:17:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:17:41,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 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 211 [2024-11-09 01:17:41,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:17:41,990 INFO L225 Difference]: With dead ends: 2283 [2024-11-09 01:17:41,990 INFO L226 Difference]: Without dead ends: 1815 [2024-11-09 01:17:41,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 01:17:42,002 INFO L432 NwaCegarLoop]: 1214 mSDtfsCounter, 2419 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2419 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:17:42,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2419 Valid, 3132 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 01:17:42,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2024-11-09 01:17:42,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 917. [2024-11-09 01:17:42,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 916 states have (on average 1.4170305676855894) internal successors, (1298), 916 states have internal predecessors, (1298), 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 01:17:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1298 transitions. [2024-11-09 01:17:42,131 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1298 transitions. Word has length 211 [2024-11-09 01:17:42,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:17:42,132 INFO L471 AbstractCegarLoop]: Abstraction has 917 states and 1298 transitions. [2024-11-09 01:17:42,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 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 01:17:42,132 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1298 transitions. [2024-11-09 01:17:42,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-09 01:17:42,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:17:42,142 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] [2024-11-09 01:17:42,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:17:42,143 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:17:42,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:17:42,151 INFO L85 PathProgramCache]: Analyzing trace with hash -650430642, now seen corresponding path program 1 times [2024-11-09 01:17:42,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:17:42,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711411902] [2024-11-09 01:17:42,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:17:42,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:17:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:42,505 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 01:17:42,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:17:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711411902] [2024-11-09 01:17:42,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711411902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:17:42,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:17:42,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:17:42,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690109822] [2024-11-09 01:17:42,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:17:42,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:17:42,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:17:42,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:17:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:17:42,515 INFO L87 Difference]: Start difference. First operand 917 states and 1298 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 01:17:42,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:17:42,819 INFO L93 Difference]: Finished difference Result 2598 states and 3656 transitions. [2024-11-09 01:17:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:17:42,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 213 [2024-11-09 01:17:42,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:17:42,830 INFO L225 Difference]: With dead ends: 2598 [2024-11-09 01:17:42,830 INFO L226 Difference]: Without dead ends: 1802 [2024-11-09 01:17:42,836 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 01:17:42,837 INFO L432 NwaCegarLoop]: 1166 mSDtfsCounter, 549 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:17:42,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1768 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 01:17:42,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2024-11-09 01:17:42,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1800. [2024-11-09 01:17:42,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1799 states have (on average 1.4113396331295165) internal successors, (2539), 1799 states have internal predecessors, (2539), 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 01:17:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2539 transitions. [2024-11-09 01:17:42,921 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2539 transitions. Word has length 213 [2024-11-09 01:17:42,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:17:42,922 INFO L471 AbstractCegarLoop]: Abstraction has 1800 states and 2539 transitions. [2024-11-09 01:17:42,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 01:17:42,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2539 transitions. [2024-11-09 01:17:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-09 01:17:42,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:17:42,929 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] [2024-11-09 01:17:42,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 01:17:42,930 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:17:42,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:17:42,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1010620259, now seen corresponding path program 1 times [2024-11-09 01:17:42,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:17:42,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818542027] [2024-11-09 01:17:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:17:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:17:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:43,140 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 01:17:43,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:17:43,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818542027] [2024-11-09 01:17:43,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818542027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:17:43,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:17:43,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:17:43,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89375613] [2024-11-09 01:17:43,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:17:43,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:17:43,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:17:43,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:17:43,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:17:43,147 INFO L87 Difference]: Start difference. First operand 1800 states and 2539 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 01:17:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:17:43,419 INFO L93 Difference]: Finished difference Result 5248 states and 7384 transitions. [2024-11-09 01:17:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:17:43,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 213 [2024-11-09 01:17:43,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:17:43,432 INFO L225 Difference]: With dead ends: 5248 [2024-11-09 01:17:43,433 INFO L226 Difference]: Without dead ends: 3580 [2024-11-09 01:17:43,435 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 01:17:43,437 INFO L432 NwaCegarLoop]: 1248 mSDtfsCounter, 657 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:17:43,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1870 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:17:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3580 states. [2024-11-09 01:17:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3580 to 1803. [2024-11-09 01:17:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 1.4106548279689235) internal successors, (2542), 1802 states have internal predecessors, (2542), 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 01:17:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2542 transitions. [2024-11-09 01:17:43,498 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2542 transitions. Word has length 213 [2024-11-09 01:17:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:17:43,499 INFO L471 AbstractCegarLoop]: Abstraction has 1803 states and 2542 transitions. [2024-11-09 01:17:43,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 01:17:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2542 transitions. [2024-11-09 01:17:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-09 01:17:43,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:17:43,505 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] [2024-11-09 01:17:43,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 01:17:43,505 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:17:43,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:17:43,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1189598648, now seen corresponding path program 1 times [2024-11-09 01:17:43,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:17:43,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732150652] [2024-11-09 01:17:43,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:17:43,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:17:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:45,468 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 01:17:45,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:17:45,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732150652] [2024-11-09 01:17:45,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732150652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:17:45,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:17:45,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 01:17:45,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649754843] [2024-11-09 01:17:45,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:17:45,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:17:45,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:17:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:17:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:17:45,473 INFO L87 Difference]: Start difference. First operand 1803 states and 2542 transitions. Second operand has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 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 01:17:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:17:46,149 INFO L93 Difference]: Finished difference Result 7357 states and 10252 transitions. [2024-11-09 01:17:46,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 01:17:46,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 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 214 [2024-11-09 01:17:46,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:17:46,168 INFO L225 Difference]: With dead ends: 7357 [2024-11-09 01:17:46,168 INFO L226 Difference]: Without dead ends: 6439 [2024-11-09 01:17:46,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 01:17:46,172 INFO L432 NwaCegarLoop]: 1684 mSDtfsCounter, 2421 mSDsluCounter, 3499 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2421 SdHoareTripleChecker+Valid, 5183 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:17:46,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2421 Valid, 5183 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 01:17:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6439 states. [2024-11-09 01:17:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6439 to 3441. [2024-11-09 01:17:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3441 states, 3440 states have (on average 1.4023255813953488) internal successors, (4824), 3440 states have internal predecessors, (4824), 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 01:17:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 4824 transitions. [2024-11-09 01:17:46,275 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 4824 transitions. Word has length 214 [2024-11-09 01:17:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:17:46,276 INFO L471 AbstractCegarLoop]: Abstraction has 3441 states and 4824 transitions. [2024-11-09 01:17:46,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 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 01:17:46,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 4824 transitions. [2024-11-09 01:17:46,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-09 01:17:46,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:17:46,283 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 01:17:46,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 01:17:46,284 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:17:46,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:17:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash -502212643, now seen corresponding path program 1 times [2024-11-09 01:17:46,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:17:46,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376749691] [2024-11-09 01:17:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:17:46,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:17:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:47,957 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 01:17:47,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:17:47,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376749691] [2024-11-09 01:17:47,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376749691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:17:47,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:17:47,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 01:17:47,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20948598] [2024-11-09 01:17:47,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:17:47,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:17:47,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:17:47,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:17:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:17:47,967 INFO L87 Difference]: Start difference. First operand 3441 states and 4824 transitions. Second operand has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 01:17:48,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:17:48,931 INFO L93 Difference]: Finished difference Result 14429 states and 20127 transitions. [2024-11-09 01:17:48,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 01:17:48,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 01:17:48,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:17:48,979 INFO L225 Difference]: With dead ends: 14429 [2024-11-09 01:17:48,979 INFO L226 Difference]: Without dead ends: 11007 [2024-11-09 01:17:48,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 01:17:48,992 INFO L432 NwaCegarLoop]: 1211 mSDtfsCounter, 1535 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 4838 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 01:17:48,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 4838 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 01:17:49,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11007 states. [2024-11-09 01:17:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11007 to 5965. [2024-11-09 01:17:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5965 states, 5964 states have (on average 1.3935278336686787) internal successors, (8311), 5964 states have internal predecessors, (8311), 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 01:17:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5965 states to 5965 states and 8311 transitions. [2024-11-09 01:17:49,297 INFO L78 Accepts]: Start accepts. Automaton has 5965 states and 8311 transitions. Word has length 216 [2024-11-09 01:17:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:17:49,297 INFO L471 AbstractCegarLoop]: Abstraction has 5965 states and 8311 transitions. [2024-11-09 01:17:49,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 01:17:49,301 INFO L276 IsEmpty]: Start isEmpty. Operand 5965 states and 8311 transitions. [2024-11-09 01:17:49,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-09 01:17:49,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:17:49,313 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 01:17:49,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 01:17:49,314 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:17:49,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:17:49,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1634205403, now seen corresponding path program 1 times [2024-11-09 01:17:49,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:17:49,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23867444] [2024-11-09 01:17:49,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:17:49,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:17:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:49,534 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 01:17:49,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:17:49,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23867444] [2024-11-09 01:17:49,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23867444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:17:49,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:17:49,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:17:49,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760177095] [2024-11-09 01:17:49,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:17:49,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:17:49,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:17:49,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:17:49,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:17:49,542 INFO L87 Difference]: Start difference. First operand 5965 states and 8311 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 01:17:49,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:17:49,928 INFO L93 Difference]: Finished difference Result 16522 states and 22844 transitions. [2024-11-09 01:17:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:17:49,934 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 01:17:49,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:17:49,991 INFO L225 Difference]: With dead ends: 16522 [2024-11-09 01:17:49,991 INFO L226 Difference]: Without dead ends: 11394 [2024-11-09 01:17:49,999 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 01:17:50,000 INFO L432 NwaCegarLoop]: 1164 mSDtfsCounter, 561 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:17:50,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1785 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:17:50,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11394 states. [2024-11-09 01:17:50,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11394 to 5988. [2024-11-09 01:17:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5988 states, 5987 states have (on average 1.3920160347419408) internal successors, (8334), 5987 states have internal predecessors, (8334), 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 01:17:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 8334 transitions. [2024-11-09 01:17:50,223 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 8334 transitions. Word has length 216 [2024-11-09 01:17:50,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:17:50,223 INFO L471 AbstractCegarLoop]: Abstraction has 5988 states and 8334 transitions. [2024-11-09 01:17:50,224 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 01:17:50,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 8334 transitions. [2024-11-09 01:17:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-09 01:17:50,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:17:50,238 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] [2024-11-09 01:17:50,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 01:17:50,239 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:17:50,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:17:50,240 INFO L85 PathProgramCache]: Analyzing trace with hash -911817892, now seen corresponding path program 1 times [2024-11-09 01:17:50,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:17:50,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758458243] [2024-11-09 01:17:50,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:17:50,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:17:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:51,999 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 01:17:52,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:17:52,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758458243] [2024-11-09 01:17:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758458243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:17:52,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:17:52,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 01:17:52,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620167818] [2024-11-09 01:17:52,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:17:52,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:17:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:17:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:17:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:17:52,003 INFO L87 Difference]: Start difference. First operand 5988 states and 8334 transitions. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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 01:17:52,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:17:52,507 INFO L93 Difference]: Finished difference Result 10315 states and 14356 transitions. [2024-11-09 01:17:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:17:52,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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 217 [2024-11-09 01:17:52,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:17:52,533 INFO L225 Difference]: With dead ends: 10315 [2024-11-09 01:17:52,533 INFO L226 Difference]: Without dead ends: 7561 [2024-11-09 01:17:52,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:17:52,539 INFO L432 NwaCegarLoop]: 1117 mSDtfsCounter, 521 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 01:17:52,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 3522 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 01:17:52,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7561 states. [2024-11-09 01:17:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7561 to 6565. [2024-11-09 01:17:52,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6565 states, 6564 states have (on average 1.389853747714808) internal successors, (9123), 6564 states have internal predecessors, (9123), 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 01:17:52,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6565 states to 6565 states and 9123 transitions. [2024-11-09 01:17:52,697 INFO L78 Accepts]: Start accepts. Automaton has 6565 states and 9123 transitions. Word has length 217 [2024-11-09 01:17:52,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:17:52,698 INFO L471 AbstractCegarLoop]: Abstraction has 6565 states and 9123 transitions. [2024-11-09 01:17:52,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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 01:17:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6565 states and 9123 transitions. [2024-11-09 01:17:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-09 01:17:52,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:17:52,710 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] [2024-11-09 01:17:52,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 01:17:52,711 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:17:52,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:17:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash 863186758, now seen corresponding path program 1 times [2024-11-09 01:17:52,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:17:52,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855162390] [2024-11-09 01:17:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:17:52,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:17:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:54,064 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 01:17:54,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:17:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855162390] [2024-11-09 01:17:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855162390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:17:54,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:17:54,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:17:54,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543085684] [2024-11-09 01:17:54,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:17:54,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:17:54,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:17:54,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:17:54,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:17:54,068 INFO L87 Difference]: Start difference. First operand 6565 states and 9123 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 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 01:17:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:17:54,718 INFO L93 Difference]: Finished difference Result 27206 states and 37635 transitions. [2024-11-09 01:17:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:17:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2024-11-09 01:17:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:17:54,762 INFO L225 Difference]: With dead ends: 27206 [2024-11-09 01:17:54,762 INFO L226 Difference]: Without dead ends: 20776 [2024-11-09 01:17:54,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 01:17:54,776 INFO L432 NwaCegarLoop]: 1352 mSDtfsCounter, 1800 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:17:54,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 3098 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 01:17:54,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20776 states. [2024-11-09 01:17:55,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20776 to 12408. [2024-11-09 01:17:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12408 states, 12407 states have (on average 1.3782542113323124) internal successors, (17100), 12407 states have internal predecessors, (17100), 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 01:17:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12408 states to 12408 states and 17100 transitions. [2024-11-09 01:17:55,262 INFO L78 Accepts]: Start accepts. Automaton has 12408 states and 17100 transitions. Word has length 217 [2024-11-09 01:17:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:17:55,262 INFO L471 AbstractCegarLoop]: Abstraction has 12408 states and 17100 transitions. [2024-11-09 01:17:55,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 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 01:17:55,264 INFO L276 IsEmpty]: Start isEmpty. Operand 12408 states and 17100 transitions. [2024-11-09 01:17:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-09 01:17:55,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:17:55,285 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] [2024-11-09 01:17:55,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 01:17:55,285 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:17:55,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:17:55,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1487068797, now seen corresponding path program 1 times [2024-11-09 01:17:55,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:17:55,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247936601] [2024-11-09 01:17:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:17:55,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:17:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:55,565 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 01:17:55,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:17:55,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247936601] [2024-11-09 01:17:55,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247936601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:17:55,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:17:55,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:17:55,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008354369] [2024-11-09 01:17:55,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:17:55,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:17:55,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:17:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:17:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:17:55,569 INFO L87 Difference]: Start difference. First operand 12408 states and 17100 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 01:17:55,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:17:55,984 INFO L93 Difference]: Finished difference Result 29974 states and 41181 transitions. [2024-11-09 01:17:55,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:17:55,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 219 [2024-11-09 01:17:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:17:56,028 INFO L225 Difference]: With dead ends: 29974 [2024-11-09 01:17:56,028 INFO L226 Difference]: Without dead ends: 21928 [2024-11-09 01:17:56,044 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 01:17:56,046 INFO L432 NwaCegarLoop]: 1212 mSDtfsCounter, 563 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:17:56,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1814 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 01:17:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21928 states. [2024-11-09 01:17:56,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21928 to 21926. [2024-11-09 01:17:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21926 states, 21925 states have (on average 1.369988597491448) internal successors, (30037), 21925 states have internal predecessors, (30037), 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 01:17:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21926 states to 21926 states and 30037 transitions. [2024-11-09 01:17:56,593 INFO L78 Accepts]: Start accepts. Automaton has 21926 states and 30037 transitions. Word has length 219 [2024-11-09 01:17:56,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:17:56,594 INFO L471 AbstractCegarLoop]: Abstraction has 21926 states and 30037 transitions. [2024-11-09 01:17:56,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 01:17:56,594 INFO L276 IsEmpty]: Start isEmpty. Operand 21926 states and 30037 transitions. [2024-11-09 01:17:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-09 01:17:56,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:17:56,628 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] [2024-11-09 01:17:56,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 01:17:56,629 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:17:56,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:17:56,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1384282043, now seen corresponding path program 1 times [2024-11-09 01:17:56,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:17:56,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927422470] [2024-11-09 01:17:56,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:17:56,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:17:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:56,842 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 01:17:56,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:17:56,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927422470] [2024-11-09 01:17:56,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927422470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:17:56,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:17:56,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:17:56,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449132992] [2024-11-09 01:17:56,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:17:56,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:17:56,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:17:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:17:56,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:17:56,848 INFO L87 Difference]: Start difference. First operand 21926 states and 30037 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 01:17:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:17:57,311 INFO L93 Difference]: Finished difference Result 58452 states and 79800 transitions. [2024-11-09 01:17:57,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:17:57,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 219 [2024-11-09 01:17:57,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:17:57,388 INFO L225 Difference]: With dead ends: 58452 [2024-11-09 01:17:57,388 INFO L226 Difference]: Without dead ends: 39425 [2024-11-09 01:17:57,413 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 01:17:57,414 INFO L432 NwaCegarLoop]: 645 mSDtfsCounter, 555 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:17:57,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1266 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:17:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39425 states. [2024-11-09 01:17:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39425 to 22019. [2024-11-09 01:17:58,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22019 states, 22018 states have (on average 1.368743755109456) internal successors, (30137), 22018 states have internal predecessors, (30137), 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 01:17:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22019 states to 22019 states and 30137 transitions. [2024-11-09 01:17:58,240 INFO L78 Accepts]: Start accepts. Automaton has 22019 states and 30137 transitions. Word has length 219 [2024-11-09 01:17:58,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:17:58,241 INFO L471 AbstractCegarLoop]: Abstraction has 22019 states and 30137 transitions. [2024-11-09 01:17:58,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 01:17:58,241 INFO L276 IsEmpty]: Start isEmpty. Operand 22019 states and 30137 transitions. [2024-11-09 01:17:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-09 01:17:58,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:17:58,274 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] [2024-11-09 01:17:58,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 01:17:58,274 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:17:58,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:17:58,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1398709891, now seen corresponding path program 1 times [2024-11-09 01:17:58,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:17:58,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191228725] [2024-11-09 01:17:58,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:17:58,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:17:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:58,609 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 01:17:58,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:17:58,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191228725] [2024-11-09 01:17:58,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191228725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:17:58,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:17:58,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:17:58,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708538489] [2024-11-09 01:17:58,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:17:58,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:17:58,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:17:58,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:17:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:17:58,614 INFO L87 Difference]: Start difference. First operand 22019 states and 30137 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 01:17:59,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:17:59,150 INFO L93 Difference]: Finished difference Result 60698 states and 82827 transitions. [2024-11-09 01:17:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:17:59,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 219 [2024-11-09 01:17:59,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:17:59,232 INFO L225 Difference]: With dead ends: 60698 [2024-11-09 01:17:59,232 INFO L226 Difference]: Without dead ends: 42662 [2024-11-09 01:17:59,261 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 01:17:59,262 INFO L432 NwaCegarLoop]: 1214 mSDtfsCounter, 542 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:17:59,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1816 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 01:17:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42662 states. [2024-11-09 01:18:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42662 to 42660. [2024-11-09 01:18:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42660 states, 42659 states have (on average 1.3600881408378067) internal successors, (58020), 42659 states have internal predecessors, (58020), 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 01:18:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42660 states to 42660 states and 58020 transitions. [2024-11-09 01:18:00,131 INFO L78 Accepts]: Start accepts. Automaton has 42660 states and 58020 transitions. Word has length 219 [2024-11-09 01:18:00,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:00,131 INFO L471 AbstractCegarLoop]: Abstraction has 42660 states and 58020 transitions. [2024-11-09 01:18:00,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 01:18:00,132 INFO L276 IsEmpty]: Start isEmpty. Operand 42660 states and 58020 transitions. [2024-11-09 01:18:00,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-09 01:18:00,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:00,176 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] [2024-11-09 01:18:00,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 01:18:00,176 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:00,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:00,177 INFO L85 PathProgramCache]: Analyzing trace with hash 698247292, now seen corresponding path program 1 times [2024-11-09 01:18:00,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:18:00,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221078434] [2024-11-09 01:18:00,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:00,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:18:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:01,712 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 01:18:01,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:18:01,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221078434] [2024-11-09 01:18:01,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221078434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:01,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:01,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 01:18:01,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237667242] [2024-11-09 01:18:01,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:01,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:18:01,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:18:01,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:18:01,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:18:01,716 INFO L87 Difference]: Start difference. First operand 42660 states and 58020 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 01:18:02,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:02,559 INFO L93 Difference]: Finished difference Result 94089 states and 127895 transitions. [2024-11-09 01:18:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:18:02,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 220 [2024-11-09 01:18:02,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:02,635 INFO L225 Difference]: With dead ends: 94089 [2024-11-09 01:18:02,636 INFO L226 Difference]: Without dead ends: 57581 [2024-11-09 01:18:02,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:18:02,660 INFO L432 NwaCegarLoop]: 1240 mSDtfsCounter, 1244 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:02,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 3102 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 01:18:02,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57581 states. [2024-11-09 01:18:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57581 to 41278. [2024-11-09 01:18:03,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41278 states, 41277 states have (on average 1.3622356275892142) internal successors, (56229), 41277 states have internal predecessors, (56229), 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 01:18:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41278 states to 41278 states and 56229 transitions. [2024-11-09 01:18:03,570 INFO L78 Accepts]: Start accepts. Automaton has 41278 states and 56229 transitions. Word has length 220 [2024-11-09 01:18:03,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:03,571 INFO L471 AbstractCegarLoop]: Abstraction has 41278 states and 56229 transitions. [2024-11-09 01:18:03,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 01:18:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand 41278 states and 56229 transitions. [2024-11-09 01:18:03,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-09 01:18:03,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:03,614 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] [2024-11-09 01:18:03,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 01:18:03,614 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:03,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:03,615 INFO L85 PathProgramCache]: Analyzing trace with hash 863332134, now seen corresponding path program 1 times [2024-11-09 01:18:03,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:18:03,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11655051] [2024-11-09 01:18:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:03,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:18:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:05,155 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 01:18:05,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:18:05,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11655051] [2024-11-09 01:18:05,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11655051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:05,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:05,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 01:18:05,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921875577] [2024-11-09 01:18:05,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:05,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:18:05,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:18:05,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:18:05,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:18:05,159 INFO L87 Difference]: Start difference. First operand 41278 states and 56229 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 01:18:05,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:05,589 INFO L93 Difference]: Finished difference Result 75813 states and 103126 transitions. [2024-11-09 01:18:05,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:18:05,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 220 [2024-11-09 01:18:05,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:05,622 INFO L225 Difference]: With dead ends: 75813 [2024-11-09 01:18:05,622 INFO L226 Difference]: Without dead ends: 40054 [2024-11-09 01:18:05,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:18:05,652 INFO L432 NwaCegarLoop]: 628 mSDtfsCounter, 63 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:05,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 2507 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 01:18:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40054 states. [2024-11-09 01:18:06,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40054 to 39891. [2024-11-09 01:18:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39891 states, 39890 states have (on average 1.3624216595638003) internal successors, (54347), 39890 states have internal predecessors, (54347), 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 01:18:06,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39891 states to 39891 states and 54347 transitions. [2024-11-09 01:18:06,529 INFO L78 Accepts]: Start accepts. Automaton has 39891 states and 54347 transitions. Word has length 220 [2024-11-09 01:18:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:06,530 INFO L471 AbstractCegarLoop]: Abstraction has 39891 states and 54347 transitions. [2024-11-09 01:18:06,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 01:18:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 39891 states and 54347 transitions. [2024-11-09 01:18:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-09 01:18:06,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:06,563 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] [2024-11-09 01:18:06,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 01:18:06,564 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:06,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:06,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1020432854, now seen corresponding path program 1 times [2024-11-09 01:18:06,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:18:06,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427195674] [2024-11-09 01:18:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:06,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:18:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:08,625 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 01:18:08,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:18:08,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427195674] [2024-11-09 01:18:08,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427195674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:08,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:08,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 01:18:08,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654708964] [2024-11-09 01:18:08,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:08,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:18:08,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:18:08,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:18:08,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:18:08,628 INFO L87 Difference]: Start difference. First operand 39891 states and 54347 transitions. Second operand has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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 01:18:09,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:09,629 INFO L93 Difference]: Finished difference Result 139909 states and 189869 transitions. [2024-11-09 01:18:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 01:18:09,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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 220 [2024-11-09 01:18:09,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:09,738 INFO L225 Difference]: With dead ends: 139909 [2024-11-09 01:18:09,738 INFO L226 Difference]: Without dead ends: 115203 [2024-11-09 01:18:09,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 01:18:09,777 INFO L432 NwaCegarLoop]: 1437 mSDtfsCounter, 3060 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3060 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:09,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3060 Valid, 3445 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 01:18:09,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115203 states. [2024-11-09 01:18:11,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115203 to 69917. [2024-11-09 01:18:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69917 states, 69916 states have (on average 1.3536386520968018) internal successors, (94641), 69916 states have internal predecessors, (94641), 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 01:18:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69917 states to 69917 states and 94641 transitions. [2024-11-09 01:18:11,654 INFO L78 Accepts]: Start accepts. Automaton has 69917 states and 94641 transitions. Word has length 220 [2024-11-09 01:18:11,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:11,654 INFO L471 AbstractCegarLoop]: Abstraction has 69917 states and 94641 transitions. [2024-11-09 01:18:11,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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 01:18:11,655 INFO L276 IsEmpty]: Start isEmpty. Operand 69917 states and 94641 transitions. [2024-11-09 01:18:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-09 01:18:11,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:11,720 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 01:18:11,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 01:18:11,720 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:11,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1792889183, now seen corresponding path program 1 times [2024-11-09 01:18:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:18:11,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661237033] [2024-11-09 01:18:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:11,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:18:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:13,383 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 01:18:13,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:18:13,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661237033] [2024-11-09 01:18:13,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661237033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:13,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:13,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 01:18:13,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217576209] [2024-11-09 01:18:13,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:13,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:18:13,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:18:13,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:18:13,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:18:13,386 INFO L87 Difference]: Start difference. First operand 69917 states and 94641 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 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 01:18:14,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:14,106 INFO L93 Difference]: Finished difference Result 118639 states and 160330 transitions. [2024-11-09 01:18:14,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:18:14,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 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 01:18:14,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:14,158 INFO L225 Difference]: With dead ends: 118639 [2024-11-09 01:18:14,158 INFO L226 Difference]: Without dead ends: 63353 [2024-11-09 01:18:14,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:18:14,179 INFO L432 NwaCegarLoop]: 719 mSDtfsCounter, 120 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:14,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 2064 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:18:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63353 states. [2024-11-09 01:18:15,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63353 to 63279. [2024-11-09 01:18:15,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63279 states, 63278 states have (on average 1.3529504725180947) internal successors, (85612), 63278 states have internal predecessors, (85612), 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 01:18:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63279 states to 63279 states and 85612 transitions. [2024-11-09 01:18:15,125 INFO L78 Accepts]: Start accepts. Automaton has 63279 states and 85612 transitions. Word has length 222 [2024-11-09 01:18:15,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:15,125 INFO L471 AbstractCegarLoop]: Abstraction has 63279 states and 85612 transitions. [2024-11-09 01:18:15,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 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 01:18:15,125 INFO L276 IsEmpty]: Start isEmpty. Operand 63279 states and 85612 transitions. [2024-11-09 01:18:15,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-09 01:18:15,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:15,158 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 01:18:15,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 01:18:15,158 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:15,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:15,158 INFO L85 PathProgramCache]: Analyzing trace with hash -717798651, now seen corresponding path program 1 times [2024-11-09 01:18:15,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:18:15,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40903263] [2024-11-09 01:18:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:15,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:18:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:15,618 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 01:18:15,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:18:15,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40903263] [2024-11-09 01:18:15,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40903263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:15,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:15,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:18:15,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763925622] [2024-11-09 01:18:15,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:15,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:18:15,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:18:15,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:18:15,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:18:15,621 INFO L87 Difference]: Start difference. First operand 63279 states and 85612 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 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 01:18:16,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:16,489 INFO L93 Difference]: Finished difference Result 149468 states and 205958 transitions. [2024-11-09 01:18:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:18:16,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 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 01:18:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:16,592 INFO L225 Difference]: With dead ends: 149468 [2024-11-09 01:18:16,592 INFO L226 Difference]: Without dead ends: 104425 [2024-11-09 01:18:16,624 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 01:18:16,624 INFO L432 NwaCegarLoop]: 786 mSDtfsCounter, 357 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:16,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1265 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 01:18:16,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104425 states. [2024-11-09 01:18:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104425 to 80609. [2024-11-09 01:18:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80609 states, 80608 states have (on average 1.3926533346566097) internal successors, (112259), 80608 states have internal predecessors, (112259), 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 01:18:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80609 states to 80609 states and 112259 transitions. [2024-11-09 01:18:18,462 INFO L78 Accepts]: Start accepts. Automaton has 80609 states and 112259 transitions. Word has length 223 [2024-11-09 01:18:18,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:18,463 INFO L471 AbstractCegarLoop]: Abstraction has 80609 states and 112259 transitions. [2024-11-09 01:18:18,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 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 01:18:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand 80609 states and 112259 transitions. [2024-11-09 01:18:18,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-09 01:18:18,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:18,498 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 01:18:18,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 01:18:18,499 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:18,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1952431510, now seen corresponding path program 1 times [2024-11-09 01:18:18,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:18:18,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954707913] [2024-11-09 01:18:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:18,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:18:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:19,319 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 01:18:19,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:18:19,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954707913] [2024-11-09 01:18:19,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954707913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:19,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:19,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:18:19,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596604047] [2024-11-09 01:18:19,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:19,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:18:19,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:18:19,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:18:19,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:18:19,665 INFO L87 Difference]: Start difference. First operand 80609 states and 112259 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 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 01:18:20,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:20,420 INFO L93 Difference]: Finished difference Result 222911 states and 309861 transitions. [2024-11-09 01:18:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:18:20,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 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 01:18:20,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:20,570 INFO L225 Difference]: With dead ends: 222911 [2024-11-09 01:18:20,571 INFO L226 Difference]: Without dead ends: 143065 [2024-11-09 01:18:20,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:18:20,624 INFO L432 NwaCegarLoop]: 919 mSDtfsCounter, 552 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:20,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 2097 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 01:18:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143065 states. [2024-11-09 01:18:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143065 to 143063. [2024-11-09 01:18:23,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143063 states, 143062 states have (on average 1.3810375920929387) internal successors, (197574), 143062 states have internal predecessors, (197574), 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 01:18:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143063 states to 143063 states and 197574 transitions. [2024-11-09 01:18:23,908 INFO L78 Accepts]: Start accepts. Automaton has 143063 states and 197574 transitions. Word has length 223 [2024-11-09 01:18:23,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:23,909 INFO L471 AbstractCegarLoop]: Abstraction has 143063 states and 197574 transitions. [2024-11-09 01:18:23,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 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 01:18:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 143063 states and 197574 transitions. [2024-11-09 01:18:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-09 01:18:23,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:23,972 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 01:18:23,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 01:18:23,972 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:23,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:23,973 INFO L85 PathProgramCache]: Analyzing trace with hash -231934903, now seen corresponding path program 1 times [2024-11-09 01:18:23,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:18:23,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858265251] [2024-11-09 01:18:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:23,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:18:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:25,339 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 01:18:25,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:18:25,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858265251] [2024-11-09 01:18:25,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858265251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:25,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:25,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:18:25,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111858107] [2024-11-09 01:18:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:25,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:18:25,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:18:25,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:18:25,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:18:25,342 INFO L87 Difference]: Start difference. First operand 143063 states and 197574 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 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 01:18:27,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:27,590 INFO L93 Difference]: Finished difference Result 700989 states and 966361 transitions. [2024-11-09 01:18:27,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:18:27,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 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 01:18:27,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:28,887 INFO L225 Difference]: With dead ends: 700989 [2024-11-09 01:18:28,887 INFO L226 Difference]: Without dead ends: 558265 [2024-11-09 01:18:29,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 01:18:29,050 INFO L432 NwaCegarLoop]: 976 mSDtfsCounter, 1918 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1918 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:29,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1918 Valid, 2507 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 01:18:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558265 states. [2024-11-09 01:18:36,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558265 to 279617. [2024-11-09 01:18:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279617 states, 279616 states have (on average 1.3717848764019227) internal successors, (383573), 279616 states have internal predecessors, (383573), 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 01:18:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279617 states to 279617 states and 383573 transitions. [2024-11-09 01:18:37,661 INFO L78 Accepts]: Start accepts. Automaton has 279617 states and 383573 transitions. Word has length 226 [2024-11-09 01:18:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:37,661 INFO L471 AbstractCegarLoop]: Abstraction has 279617 states and 383573 transitions. [2024-11-09 01:18:37,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 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 01:18:37,662 INFO L276 IsEmpty]: Start isEmpty. Operand 279617 states and 383573 transitions. [2024-11-09 01:18:38,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-09 01:18:38,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:38,026 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] [2024-11-09 01:18:38,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 01:18:38,026 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:38,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:38,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1069105792, now seen corresponding path program 1 times [2024-11-09 01:18:38,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:18:38,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490530492] [2024-11-09 01:18:38,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:38,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:18:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:38,228 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 01:18:38,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:18:38,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490530492] [2024-11-09 01:18:38,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490530492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:38,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:38,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:18:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726919077] [2024-11-09 01:18:38,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:38,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:18:38,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:18:38,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:18:38,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:18:38,232 INFO L87 Difference]: Start difference. First operand 279617 states and 383573 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 01:18:40,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:40,976 INFO L93 Difference]: Finished difference Result 837369 states and 1148585 transitions. [2024-11-09 01:18:40,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:18:40,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 228 [2024-11-09 01:18:40,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted.