./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a7739db417dd3a7949b85fdc1580070418ab01f2ce849c1cec5e10c9c4e326f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:39:05,885 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:39:05,945 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:39:05,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:39:05,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:39:05,988 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:39:05,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:39:05,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:39:05,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:39:05,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:39:05,990 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:39:05,991 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:39:05,991 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:39:05,992 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:39:05,992 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:39:05,993 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:39:05,993 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:39:05,994 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:39:05,994 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:39:05,995 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:39:05,995 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:39:05,996 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:39:05,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:39:05,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:39:06,000 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:39:06,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:39:06,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:39:06,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:39:06,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:39:06,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:39:06,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:39:06,023 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:39:06,023 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:39:06,024 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:39:06,024 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:39:06,024 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:39:06,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:39:06,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:39:06,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:39:06,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:39:06,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:39:06,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:39:06,028 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:39:06,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:39:06,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:39:06,029 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:39:06,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:39:06,029 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_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a7739db417dd3a7949b85fdc1580070418ab01f2ce849c1cec5e10c9c4e326f [2024-11-02 12:39:06,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:39:06,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:39:06,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:39:06,348 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:39:06,349 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:39:06,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/eca-rers2012/Problem01_label54.c Unable to find full path for "g++" [2024-11-02 12:39:08,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:39:08,876 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:39:08,876 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/sv-benchmarks/c/eca-rers2012/Problem01_label54.c [2024-11-02 12:39:08,902 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/data/b43c62573/56b1d27a029842078238d35a5e89bd21/FLAG16a1c720e [2024-11-02 12:39:08,995 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/data/b43c62573/56b1d27a029842078238d35a5e89bd21 [2024-11-02 12:39:09,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:39:09,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:39:09,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:39:09,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:39:09,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:39:09,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:39:08" (1/1) ... [2024-11-02 12:39:09,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7e1260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09, skipping insertion in model container [2024-11-02 12:39:09,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:39:08" (1/1) ... [2024-11-02 12:39:09,127 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:39:09,641 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/sv-benchmarks/c/eca-rers2012/Problem01_label54.c[20718,20731] [2024-11-02 12:39:09,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:39:09,687 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:39:09,838 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/sv-benchmarks/c/eca-rers2012/Problem01_label54.c[20718,20731] [2024-11-02 12:39:09,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:39:09,884 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:39:09,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09 WrapperNode [2024-11-02 12:39:09,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:39:09,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:39:09,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:39:09,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:39:09,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09" (1/1) ... [2024-11-02 12:39:09,923 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09" (1/1) ... [2024-11-02 12:39:09,988 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2024-11-02 12:39:09,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:39:09,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:39:09,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:39:09,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:39:10,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09" (1/1) ... [2024-11-02 12:39:10,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09" (1/1) ... [2024-11-02 12:39:10,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09" (1/1) ... [2024-11-02 12:39:10,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09" (1/1) ... [2024-11-02 12:39:10,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09" (1/1) ... [2024-11-02 12:39:10,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09" (1/1) ... [2024-11-02 12:39:10,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09" (1/1) ... [2024-11-02 12:39:10,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09" (1/1) ... [2024-11-02 12:39:10,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:39:10,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:39:10,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:39:10,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:39:10,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09" (1/1) ... [2024-11-02 12:39:10,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:39:10,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:10,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:39:10,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:39:10,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:39:10,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:39:10,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:39:10,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:39:10,290 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:39:10,293 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:39:11,833 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-02 12:39:11,836 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:39:12,177 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:39:12,177 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:39:12,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:39:12 BoogieIcfgContainer [2024-11-02 12:39:12,178 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:39:12,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:39:12,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:39:12,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:39:12,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:39:08" (1/3) ... [2024-11-02 12:39:12,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6c1195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:39:12, skipping insertion in model container [2024-11-02 12:39:12,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:09" (2/3) ... [2024-11-02 12:39:12,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6c1195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:39:12, skipping insertion in model container [2024-11-02 12:39:12,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:39:12" (3/3) ... [2024-11-02 12:39:12,194 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2024-11-02 12:39:12,223 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:39:12,224 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:39:12,341 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:39:12,348 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;@56cbf56f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:39:12,349 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:39:12,355 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) [2024-11-02 12:39:12,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-02 12:39:12,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:12,366 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] [2024-11-02 12:39:12,368 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:39:12,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:12,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1230156951, now seen corresponding path program 1 times [2024-11-02 12:39:12,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:12,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382034216] [2024-11-02 12:39:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:12,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:39:13,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:13,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382034216] [2024-11-02 12:39:13,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382034216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:13,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:13,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:39:13,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679361964] [2024-11-02 12:39:13,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:13,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:39:13,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:13,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:39:13,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:39:13,175 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) [2024-11-02 12:39:13,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:13,781 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2024-11-02 12:39:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:39:13,784 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 [2024-11-02 12:39:13,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:13,797 INFO L225 Difference]: With dead ends: 224 [2024-11-02 12:39:13,797 INFO L226 Difference]: Without dead ends: 145 [2024-11-02 12:39:13,801 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 [2024-11-02 12:39:13,805 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 [2024-11-02 12:39:13,807 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] [2024-11-02 12:39:13,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-02 12:39:13,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-02 12:39:13,855 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) [2024-11-02 12:39:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2024-11-02 12:39:13,859 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2024-11-02 12:39:13,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:13,860 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2024-11-02 12:39:13,861 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) [2024-11-02 12:39:13,861 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2024-11-02 12:39:13,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-02 12:39:13,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:13,864 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] [2024-11-02 12:39:13,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:39:13,865 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:39:13,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:13,866 INFO L85 PathProgramCache]: Analyzing trace with hash -201547057, now seen corresponding path program 1 times [2024-11-02 12:39:13,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:13,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024288932] [2024-11-02 12:39:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:13,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 12:39:14,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:14,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024288932] [2024-11-02 12:39:14,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024288932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:14,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:14,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:39:14,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447580186] [2024-11-02 12:39:14,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:14,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:39:14,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:14,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:39:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:39:14,209 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) [2024-11-02 12:39:14,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:14,764 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2024-11-02 12:39:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:39:14,765 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 [2024-11-02 12:39:14,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:14,767 INFO L225 Difference]: With dead ends: 431 [2024-11-02 12:39:14,772 INFO L226 Difference]: Without dead ends: 287 [2024-11-02 12:39:14,773 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 [2024-11-02 12:39:14,774 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:14,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:39:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-02 12:39:14,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-02 12:39:14,810 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) [2024-11-02 12:39:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2024-11-02 12:39:14,813 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2024-11-02 12:39:14,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:14,813 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2024-11-02 12:39:14,813 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) [2024-11-02 12:39:14,816 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2024-11-02 12:39:14,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-02 12:39:14,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:14,820 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:14,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:39:14,821 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:39:14,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash -986291707, now seen corresponding path program 1 times [2024-11-02 12:39:14,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:14,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206934720] [2024-11-02 12:39:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:14,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:39:15,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:15,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206934720] [2024-11-02 12:39:15,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206934720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:15,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:15,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:39:15,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127424079] [2024-11-02 12:39:15,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:15,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:39:15,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:15,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:39:15,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:39:15,019 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2024-11-02 12:39:15,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:15,483 INFO L93 Difference]: Finished difference Result 715 states and 1184 transitions. [2024-11-02 12:39:15,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:39:15,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 105 [2024-11-02 12:39:15,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:15,487 INFO L225 Difference]: With dead ends: 715 [2024-11-02 12:39:15,488 INFO L226 Difference]: Without dead ends: 429 [2024-11-02 12:39:15,489 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 [2024-11-02 12:39:15,493 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 87 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:15,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 26 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:39:15,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-02 12:39:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2024-11-02 12:39:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6442577030812324) internal successors, (587), 357 states have internal predecessors, (587), 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) [2024-11-02 12:39:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 587 transitions. [2024-11-02 12:39:15,527 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 587 transitions. Word has length 105 [2024-11-02 12:39:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:15,527 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 587 transitions. [2024-11-02 12:39:15,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2024-11-02 12:39:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 587 transitions. [2024-11-02 12:39:15,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-02 12:39:15,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:15,532 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:15,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:39:15,532 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:39:15,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:15,533 INFO L85 PathProgramCache]: Analyzing trace with hash 500006095, now seen corresponding path program 1 times [2024-11-02 12:39:15,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:15,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038638442] [2024-11-02 12:39:15,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:15,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-02 12:39:15,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:15,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038638442] [2024-11-02 12:39:15,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038638442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:15,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:15,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:39:15,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689565413] [2024-11-02 12:39:15,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:15,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:39:15,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:15,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:39:15,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:39:15,870 INFO L87 Difference]: Start difference. First operand 358 states and 587 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) [2024-11-02 12:39:16,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:16,258 INFO L93 Difference]: Finished difference Result 715 states and 1173 transitions. [2024-11-02 12:39:16,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:39:16,259 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 109 [2024-11-02 12:39:16,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:16,261 INFO L225 Difference]: With dead ends: 715 [2024-11-02 12:39:16,261 INFO L226 Difference]: Without dead ends: 358 [2024-11-02 12:39:16,265 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 [2024-11-02 12:39:16,266 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:16,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 58 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:39:16,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-02 12:39:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2024-11-02 12:39:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 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) [2024-11-02 12:39:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2024-11-02 12:39:16,284 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 109 [2024-11-02 12:39:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:16,285 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2024-11-02 12:39:16,285 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) [2024-11-02 12:39:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2024-11-02 12:39:16,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-02 12:39:16,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:16,288 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:16,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:39:16,289 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:39:16,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:16,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1607139591, now seen corresponding path program 1 times [2024-11-02 12:39:16,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:16,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553360358] [2024-11-02 12:39:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:16,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-02 12:39:16,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:16,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553360358] [2024-11-02 12:39:16,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553360358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:16,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693841251] [2024-11-02 12:39:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:16,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:16,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:16,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:16,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:39:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:16,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:39:16,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-02 12:39:17,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:39:17,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693841251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:17,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:39:17,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-02 12:39:17,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417635225] [2024-11-02 12:39:17,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:17,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:39:17,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:17,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:39:17,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:39:17,205 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-02 12:39:17,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:17,675 INFO L93 Difference]: Finished difference Result 857 states and 1370 transitions. [2024-11-02 12:39:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:39:17,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 113 [2024-11-02 12:39:17,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:17,679 INFO L225 Difference]: With dead ends: 857 [2024-11-02 12:39:17,680 INFO L226 Difference]: Without dead ends: 429 [2024-11-02 12:39:17,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:39:17,682 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:17,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 126 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:39:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-02 12:39:17,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2024-11-02 12:39:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.2408963585434174) internal successors, (443), 357 states have internal predecessors, (443), 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) [2024-11-02 12:39:17,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 443 transitions. [2024-11-02 12:39:17,697 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 443 transitions. Word has length 113 [2024-11-02 12:39:17,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:17,698 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 443 transitions. [2024-11-02 12:39:17,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-02 12:39:17,698 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 443 transitions. [2024-11-02 12:39:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-02 12:39:17,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:17,701 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:17,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:39:17,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:17,902 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:39:17,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:17,903 INFO L85 PathProgramCache]: Analyzing trace with hash -996645655, now seen corresponding path program 1 times [2024-11-02 12:39:17,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:17,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223718095] [2024-11-02 12:39:17,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:17,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-02 12:39:18,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:18,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223718095] [2024-11-02 12:39:18,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223718095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:18,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77377102] [2024-11-02 12:39:18,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:18,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:18,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:18,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:18,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:39:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:18,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:39:18,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-02 12:39:18,649 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:39:18,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77377102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:18,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:39:18,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-02 12:39:18,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744435050] [2024-11-02 12:39:18,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:18,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:39:18,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:18,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:39:18,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:39:18,652 INFO L87 Difference]: Start difference. First operand 358 states and 443 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-02 12:39:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:19,082 INFO L93 Difference]: Finished difference Result 997 states and 1227 transitions. [2024-11-02 12:39:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:39:19,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 125 [2024-11-02 12:39:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:19,083 INFO L225 Difference]: With dead ends: 997 [2024-11-02 12:39:19,084 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:39:19,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:39:19,087 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:19,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 118 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:39:19,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:39:19,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:39:19,090 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) [2024-11-02 12:39:19,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:39:19,090 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2024-11-02 12:39:19,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:19,091 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:39:19,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-02 12:39:19,091 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:39:19,091 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:39:19,097 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:39:19,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 12:39:19,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:19,301 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-02 12:39:19,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 12:39:19,369 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:39:19,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:39:19 BoogieIcfgContainer [2024-11-02 12:39:19,390 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:39:19,390 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:39:19,390 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:39:19,390 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:39:19,391 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:39:12" (3/4) ... [2024-11-02 12:39:19,394 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:39:19,420 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 120 nodes and edges [2024-11-02 12:39:19,421 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-02 12:39:19,422 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-02 12:39:19,425 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:39:19,654 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:39:19,654 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:39:19,655 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:39:19,655 INFO L158 Benchmark]: Toolchain (without parser) took 10649.39ms. Allocated memory was 146.8MB in the beginning and 270.5MB in the end (delta: 123.7MB). Free memory was 111.7MB in the beginning and 126.5MB in the end (delta: -14.8MB). Peak memory consumption was 110.7MB. Max. memory is 16.1GB. [2024-11-02 12:39:19,656 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 146.8MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:39:19,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 872.29ms. Allocated memory is still 146.8MB. Free memory was 111.7MB in the beginning and 82.1MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-02 12:39:19,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.09ms. Allocated memory is still 146.8MB. Free memory was 82.1MB in the beginning and 76.3MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-02 12:39:19,657 INFO L158 Benchmark]: Boogie Preprocessor took 71.22ms. Allocated memory is still 146.8MB. Free memory was 76.3MB in the beginning and 71.1MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-02 12:39:19,657 INFO L158 Benchmark]: RCFGBuilder took 2110.57ms. Allocated memory was 146.8MB in the beginning and 224.4MB in the end (delta: 77.6MB). Free memory was 71.1MB in the beginning and 78.7MB in the end (delta: -7.7MB). Peak memory consumption was 78.8MB. Max. memory is 16.1GB. [2024-11-02 12:39:19,658 INFO L158 Benchmark]: TraceAbstraction took 7209.15ms. Allocated memory was 224.4MB in the beginning and 270.5MB in the end (delta: 46.1MB). Free memory was 78.7MB in the beginning and 139.1MB in the end (delta: -60.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:39:19,658 INFO L158 Benchmark]: Witness Printer took 264.59ms. Allocated memory is still 270.5MB. Free memory was 139.1MB in the beginning and 126.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:39:19,660 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 146.8MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 872.29ms. Allocated memory is still 146.8MB. Free memory was 111.7MB in the beginning and 82.1MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.09ms. Allocated memory is still 146.8MB. Free memory was 82.1MB in the beginning and 76.3MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.22ms. Allocated memory is still 146.8MB. Free memory was 76.3MB in the beginning and 71.1MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2110.57ms. Allocated memory was 146.8MB in the beginning and 224.4MB in the end (delta: 77.6MB). Free memory was 71.1MB in the beginning and 78.7MB in the end (delta: -7.7MB). Peak memory consumption was 78.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7209.15ms. Allocated memory was 224.4MB in the beginning and 270.5MB in the end (delta: 46.1MB). Free memory was 78.7MB in the beginning and 139.1MB in the end (delta: -60.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 264.59ms. Allocated memory is still 270.5MB. Free memory was 139.1MB in the beginning and 126.5MB 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: 552]: 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: 7.0s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 213 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213 mSDsluCounter, 391 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 339 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1229 IncrementalHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 339 mSolverCounterUnsat, 368 mSDtfsCounter, 1229 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 250 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=3, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 142 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 836 NumberOfCodeBlocks, 836 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 828 ConstructedInterpolants, 0 QuantifiedInterpolants, 1762 SizeOfPredicates, 0 NumberOfNonLiveVariables, 653 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 339/345 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: ((((a8 < 14) || ((a21 == 1) && (15 <= a8))) || ((a17 <= 0) && (a21 == 1))) || ((a21 == 1) && (a20 == 1))) RESULT: Ultimate proved your program to be correct! [2024-11-02 12:39:19,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63dd041a-51b1-4273-80a0-87663a26a4c1/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE