./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label09.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_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/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_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/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_093b04c5-50c6-4a32-ada4-ab325858e7b3/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 ffdda078a4af5cadd809285deda853e717921f28c9c08179af4d863a439eed59 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:21:55,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:21:55,187 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:21:55,193 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:21:55,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:21:55,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:21:55,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:21:55,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:21:55,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:21:55,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:21:55,224 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:21:55,225 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:21:55,225 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:21:55,227 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:21:55,229 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:21:55,230 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:21:55,230 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:21:55,231 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:21:55,231 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:21:55,232 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:21:55,236 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:21:55,237 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:21:55,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:21:55,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:21:55,238 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:21:55,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:21:55,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:21:55,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:21:55,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:21:55,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:21:55,242 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:21:55,243 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:21:55,243 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:21:55,243 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:21:55,244 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:21:55,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:21:55,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:21:55,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:21:55,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:21:55,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:21:55,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:21:55,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:21:55,247 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:21:55,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:21:55,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:21:55,249 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:21:55,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:21:55,249 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_093b04c5-50c6-4a32-ada4-ab325858e7b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffdda078a4af5cadd809285deda853e717921f28c9c08179af4d863a439eed59 [2024-11-09 06:21:55,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:21:55,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:21:55,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:21:55,628 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:21:55,629 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:21:55,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c Unable to find full path for "g++" [2024-11-09 06:21:57,824 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:21:58,284 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:21:58,286 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2024-11-09 06:21:58,309 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/data/54301e94d/332c0fe75cae462aabaaae2935c67ba2/FLAG49791f656 [2024-11-09 06:21:58,328 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/data/54301e94d/332c0fe75cae462aabaaae2935c67ba2 [2024-11-09 06:21:58,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:21:58,334 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:21:58,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:21:58,338 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:21:58,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:21:58,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:21:58" (1/1) ... [2024-11-09 06:21:58,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e35241c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:58, skipping insertion in model container [2024-11-09 06:21:58,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:21:58" (1/1) ... [2024-11-09 06:21:58,415 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:21:58,945 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_093b04c5-50c6-4a32-ada4-ab325858e7b3/sv-benchmarks/c/eca-rers2012/Problem01_label09.c[20223,20236] [2024-11-09 06:21:58,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:21:58,992 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:21:59,120 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_093b04c5-50c6-4a32-ada4-ab325858e7b3/sv-benchmarks/c/eca-rers2012/Problem01_label09.c[20223,20236] [2024-11-09 06:21:59,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:21:59,165 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:21:59,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59 WrapperNode [2024-11-09 06:21:59,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:21:59,168 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:21:59,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:21:59,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:21:59,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59" (1/1) ... [2024-11-09 06:21:59,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59" (1/1) ... [2024-11-09 06:21:59,257 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2024-11-09 06:21:59,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:21:59,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:21:59,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:21:59,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:21:59,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59" (1/1) ... [2024-11-09 06:21:59,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59" (1/1) ... [2024-11-09 06:21:59,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59" (1/1) ... [2024-11-09 06:21:59,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59" (1/1) ... [2024-11-09 06:21:59,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59" (1/1) ... [2024-11-09 06:21:59,312 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59" (1/1) ... [2024-11-09 06:21:59,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59" (1/1) ... [2024-11-09 06:21:59,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59" (1/1) ... [2024-11-09 06:21:59,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:21:59,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:21:59,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:21:59,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:21:59,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59" (1/1) ... [2024-11-09 06:21:59,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:21:59,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:21:59,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:21:59,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:21:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:21:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:21:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:21:59,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:21:59,561 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:21:59,564 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:22:00,962 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-09 06:22:00,963 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:22:01,211 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:22:01,211 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:22:01,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:22:01 BoogieIcfgContainer [2024-11-09 06:22:01,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:22:01,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:22:01,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:22:01,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:22:01,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:21:58" (1/3) ... [2024-11-09 06:22:01,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544732d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:22:01, skipping insertion in model container [2024-11-09 06:22:01,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:59" (2/3) ... [2024-11-09 06:22:01,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544732d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:22:01, skipping insertion in model container [2024-11-09 06:22:01,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:22:01" (3/3) ... [2024-11-09 06:22:01,222 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label09.c [2024-11-09 06:22:01,264 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:22:01,266 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:22:01,348 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:22:01,355 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;@4761cf9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:22:01,356 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:22:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:01,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 06:22:01,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:01,370 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] [2024-11-09 06:22:01,371 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:01,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash -131198730, now seen corresponding path program 1 times [2024-11-09 06:22:01,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:22:01,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116768200] [2024-11-09 06:22:01,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:01,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:22:01,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:22:01,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116768200] [2024-11-09 06:22:01,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116768200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:01,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:22:01,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:22:01,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427131971] [2024-11-09 06:22:01,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:01,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:22:01,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:22:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:22:01,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:22:01,996 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:02,561 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2024-11-09 06:22:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:22:02,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2024-11-09 06:22:02,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:02,576 INFO L225 Difference]: With dead ends: 224 [2024-11-09 06:22:02,576 INFO L226 Difference]: Without dead ends: 145 [2024-11-09 06:22:02,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:22:02,584 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:02,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 36 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:22:02,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-09 06:22:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-09 06:22:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 144 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2024-11-09 06:22:02,659 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2024-11-09 06:22:02,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:02,661 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2024-11-09 06:22:02,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:02,662 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2024-11-09 06:22:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 06:22:02,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:02,670 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:02,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:22:02,671 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:02,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash 190988142, now seen corresponding path program 1 times [2024-11-09 06:22:02,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:22:02,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660418170] [2024-11-09 06:22:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:02,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:22:03,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:22:03,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660418170] [2024-11-09 06:22:03,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660418170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:22:03,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93779953] [2024-11-09 06:22:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:03,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:03,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:22:03,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:22:03,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:22:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:03,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:22:03,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:22:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:22:03,870 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:22:03,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93779953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:03,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:22:03,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 06:22:03,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045456839] [2024-11-09 06:22:03,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:03,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:22:03,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:22:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:22:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:22:03,875 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:04,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:04,391 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2024-11-09 06:22:04,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:22:04,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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 75 [2024-11-09 06:22:04,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:04,395 INFO L225 Difference]: With dead ends: 431 [2024-11-09 06:22:04,395 INFO L226 Difference]: Without dead ends: 287 [2024-11-09 06:22:04,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:22:04,403 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:04,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 27 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:22:04,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-09 06:22:04,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-09 06:22:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2024-11-09 06:22:04,444 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2024-11-09 06:22:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:04,445 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2024-11-09 06:22:04,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:04,446 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2024-11-09 06:22:04,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 06:22:04,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:04,450 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:04,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:22:04,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:04,652 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:04,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:04,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1227022850, now seen corresponding path program 1 times [2024-11-09 06:22:04,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:22:04,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367234044] [2024-11-09 06:22:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:04,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:22:04,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:22:04,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367234044] [2024-11-09 06:22:04,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367234044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:04,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:22:04,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:22:04,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413425654] [2024-11-09 06:22:04,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:04,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:22:04,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:22:04,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:22:04,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:22:04,915 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:05,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:05,387 INFO L93 Difference]: Finished difference Result 857 states and 1398 transitions. [2024-11-09 06:22:05,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:22:05,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2024-11-09 06:22:05,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:05,397 INFO L225 Difference]: With dead ends: 857 [2024-11-09 06:22:05,398 INFO L226 Difference]: Without dead ends: 571 [2024-11-09 06:22:05,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:22:05,400 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:05,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 125 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:22:05,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-11-09 06:22:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2024-11-09 06:22:05,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.4729458917835672) internal successors, (735), 499 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:05,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 735 transitions. [2024-11-09 06:22:05,444 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 735 transitions. Word has length 82 [2024-11-09 06:22:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:05,444 INFO L471 AbstractCegarLoop]: Abstraction has 500 states and 735 transitions. [2024-11-09 06:22:05,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 735 transitions. [2024-11-09 06:22:05,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 06:22:05,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:05,448 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:05,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:22:05,449 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:05,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash -523365660, now seen corresponding path program 1 times [2024-11-09 06:22:05,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:22:05,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061561857] [2024-11-09 06:22:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:05,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:22:05,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:22:05,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061561857] [2024-11-09 06:22:05,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061561857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:05,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:22:05,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:22:05,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410030205] [2024-11-09 06:22:05,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:05,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:22:05,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:22:05,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:22:05,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:22:05,629 INFO L87 Difference]: Start difference. First operand 500 states and 735 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:06,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:06,134 INFO L93 Difference]: Finished difference Result 1425 states and 2106 transitions. [2024-11-09 06:22:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:22:06,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2024-11-09 06:22:06,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:06,140 INFO L225 Difference]: With dead ends: 1425 [2024-11-09 06:22:06,141 INFO L226 Difference]: Without dead ends: 926 [2024-11-09 06:22:06,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:22:06,143 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 56 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:06,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 132 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:22:06,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2024-11-09 06:22:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2024-11-09 06:22:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4303959131545338) internal successors, (1120), 783 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:06,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1120 transitions. [2024-11-09 06:22:06,200 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1120 transitions. Word has length 94 [2024-11-09 06:22:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:06,201 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 1120 transitions. [2024-11-09 06:22:06,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:06,201 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1120 transitions. [2024-11-09 06:22:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 06:22:06,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:06,210 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:06,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:22:06,210 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:06,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:06,211 INFO L85 PathProgramCache]: Analyzing trace with hash -726840806, now seen corresponding path program 1 times [2024-11-09 06:22:06,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:22:06,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451509170] [2024-11-09 06:22:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:06,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 06:22:06,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:22:06,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451509170] [2024-11-09 06:22:06,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451509170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:06,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:22:06,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:22:06,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47881524] [2024-11-09 06:22:06,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:06,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:22:06,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:22:06,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:22:06,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:22:06,479 INFO L87 Difference]: Start difference. First operand 784 states and 1120 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:06,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:06,929 INFO L93 Difference]: Finished difference Result 1709 states and 2405 transitions. [2024-11-09 06:22:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:22:06,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 98 [2024-11-09 06:22:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:06,934 INFO L225 Difference]: With dead ends: 1709 [2024-11-09 06:22:06,935 INFO L226 Difference]: Without dead ends: 784 [2024-11-09 06:22:06,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:22:06,937 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:06,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 58 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:22:06,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-09 06:22:06,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2024-11-09 06:22:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.223499361430396) internal successors, (958), 783 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:06,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 958 transitions. [2024-11-09 06:22:06,961 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 958 transitions. Word has length 98 [2024-11-09 06:22:06,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:06,961 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 958 transitions. [2024-11-09 06:22:06,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:06,962 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 958 transitions. [2024-11-09 06:22:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 06:22:06,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:06,964 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:06,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:22:06,965 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:06,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:06,966 INFO L85 PathProgramCache]: Analyzing trace with hash -767045470, now seen corresponding path program 1 times [2024-11-09 06:22:06,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:22:06,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934298880] [2024-11-09 06:22:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:06,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 06:22:07,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:22:07,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934298880] [2024-11-09 06:22:07,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934298880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:22:07,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558132058] [2024-11-09 06:22:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:07,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:07,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:22:07,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:22:07,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:22:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:07,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:22:07,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:22:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:22:07,697 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:22:07,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558132058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:07,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:22:07,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 06:22:07,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119588733] [2024-11-09 06:22:07,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:07,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:22:07,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:22:07,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:22:07,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:22:07,700 INFO L87 Difference]: Start difference. First operand 784 states and 958 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:08,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:08,126 INFO L93 Difference]: Finished difference Result 1993 states and 2462 transitions. [2024-11-09 06:22:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:22:08,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 102 [2024-11-09 06:22:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:08,131 INFO L225 Difference]: With dead ends: 1993 [2024-11-09 06:22:08,132 INFO L226 Difference]: Without dead ends: 1210 [2024-11-09 06:22:08,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 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 06:22:08,134 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:08,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 26 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:22:08,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-11-09 06:22:08,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 926. [2024-11-09 06:22:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2313513513513514) internal successors, (1139), 925 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1139 transitions. [2024-11-09 06:22:08,168 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1139 transitions. Word has length 102 [2024-11-09 06:22:08,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:08,169 INFO L471 AbstractCegarLoop]: Abstraction has 926 states and 1139 transitions. [2024-11-09 06:22:08,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:08,170 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1139 transitions. [2024-11-09 06:22:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-09 06:22:08,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:08,173 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:08,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:22:08,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:08,375 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:08,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:08,376 INFO L85 PathProgramCache]: Analyzing trace with hash -322017833, now seen corresponding path program 1 times [2024-11-09 06:22:08,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:22:08,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727218012] [2024-11-09 06:22:08,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:08,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:22:08,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:22:08,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727218012] [2024-11-09 06:22:08,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727218012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:22:08,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304227717] [2024-11-09 06:22:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:08,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:08,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:22:08,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:22:08,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:22:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:09,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:22:09,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:22:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:22:09,250 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:22:09,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304227717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:09,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:22:09,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 06:22:09,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696762821] [2024-11-09 06:22:09,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:09,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:22:09,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:22:09,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:22:09,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:22:09,255 INFO L87 Difference]: Start difference. First operand 926 states and 1139 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:09,632 INFO L93 Difference]: Finished difference Result 1849 states and 2276 transitions. [2024-11-09 06:22:09,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:22:09,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 144 [2024-11-09 06:22:09,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:09,634 INFO L225 Difference]: With dead ends: 1849 [2024-11-09 06:22:09,634 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 06:22:09,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:22:09,637 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:09,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 23 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:22:09,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 06:22:09,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 06:22:09,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 06:22:09,639 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 144 [2024-11-09 06:22:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:09,639 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 06:22:09,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 06:22:09,639 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 06:22:09,643 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 06:22:09,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:22:09,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:09,847 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:09,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 06:22:09,915 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 06:22:09,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:22:09 BoogieIcfgContainer [2024-11-09 06:22:09,940 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 06:22:09,941 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 06:22:09,941 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 06:22:09,941 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 06:22:09,941 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:22:01" (3/4) ... [2024-11-09 06:22:09,945 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 06:22:09,973 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2024-11-09 06:22:09,976 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-09 06:22:09,977 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 06:22:09,978 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 06:22:10,177 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 06:22:10,178 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 06:22:10,178 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 06:22:10,179 INFO L158 Benchmark]: Toolchain (without parser) took 11845.07ms. Allocated memory was 167.8MB in the beginning and 245.4MB in the end (delta: 77.6MB). Free memory was 136.7MB in the beginning and 71.5MB in the end (delta: 65.3MB). Peak memory consumption was 144.9MB. Max. memory is 16.1GB. [2024-11-09 06:22:10,179 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory is still 59.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:22:10,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 828.90ms. Allocated memory is still 167.8MB. Free memory was 136.7MB in the beginning and 106.9MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-09 06:22:10,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.97ms. Allocated memory is still 167.8MB. Free memory was 106.9MB in the beginning and 101.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 06:22:10,181 INFO L158 Benchmark]: Boogie Preprocessor took 77.14ms. Allocated memory is still 167.8MB. Free memory was 101.1MB in the beginning and 96.4MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 06:22:10,181 INFO L158 Benchmark]: RCFGBuilder took 1875.86ms. Allocated memory is still 167.8MB. Free memory was 96.4MB in the beginning and 68.4MB in the end (delta: 28.0MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2024-11-09 06:22:10,182 INFO L158 Benchmark]: TraceAbstraction took 8726.02ms. Allocated memory was 167.8MB in the beginning and 245.4MB in the end (delta: 77.6MB). Free memory was 67.4MB in the beginning and 85.1MB in the end (delta: -17.7MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2024-11-09 06:22:10,182 INFO L158 Benchmark]: Witness Printer took 237.67ms. Allocated memory is still 245.4MB. Free memory was 84.0MB in the beginning and 71.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 06:22:10,185 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory is still 59.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 828.90ms. Allocated memory is still 167.8MB. Free memory was 136.7MB in the beginning and 106.9MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.97ms. Allocated memory is still 167.8MB. Free memory was 106.9MB in the beginning and 101.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.14ms. Allocated memory is still 167.8MB. Free memory was 101.1MB in the beginning and 96.4MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1875.86ms. Allocated memory is still 167.8MB. Free memory was 96.4MB in the beginning and 68.4MB in the end (delta: 28.0MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8726.02ms. Allocated memory was 167.8MB in the beginning and 245.4MB in the end (delta: 77.6MB). Free memory was 67.4MB in the beginning and 85.1MB in the end (delta: -17.7MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. * Witness Printer took 237.67ms. Allocated memory is still 245.4MB. Free memory was 84.0MB in the beginning and 71.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 540]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.5s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 291 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 291 mSDsluCounter, 427 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 387 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1411 IncrementalHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 387 mSolverCounterUnsat, 400 mSDtfsCounter, 1411 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 339 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=6, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 497 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 987 NumberOfCodeBlocks, 987 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 977 ConstructedInterpolants, 0 QuantifiedInterpolants, 3661 SizeOfPredicates, 0 NumberOfNonLiveVariables, 846 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 318/327 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((13 < a8) || (a16 < 5)) || (a7 < 1)) || (a20 == 1)) RESULT: Ultimate proved your program to be correct! [2024-11-09 06:22:10,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093b04c5-50c6-4a32-ada4-ab325858e7b3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE