./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/interleave_bits.i --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_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/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_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/interleave_bits.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/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_2c16487b-0092-4c1f-a738-232a184f51fe/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 41cbcdfa6f09b615c08bb2dbf908be5e0a68dc8c6a10c0ba76a3c4e4c07e69fb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:38:21,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:38:21,341 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:38:21,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:38:21,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:38:21,394 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:38:21,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:38:21,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:38:21,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:38:21,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:38:21,397 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:38:21,397 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:38:21,397 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:38:21,398 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:38:21,398 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:38:21,399 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:38:21,402 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:38:21,405 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:38:21,405 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:38:21,405 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:38:21,406 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:38:21,406 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:38:21,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:38:21,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:38:21,407 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:38:21,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:38:21,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:38:21,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:38:21,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:38:21,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:38:21,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:38:21,411 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:38:21,411 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:38:21,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:38:21,411 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:38:21,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:38:21,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:38:21,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:38:21,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:38:21,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:38:21,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:38:21,415 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:38:21,415 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:38:21,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:38:21,416 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:38:21,416 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:38:21,416 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:38:21,416 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_2c16487b-0092-4c1f-a738-232a184f51fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41cbcdfa6f09b615c08bb2dbf908be5e0a68dc8c6a10c0ba76a3c4e4c07e69fb [2024-11-02 12:38:21,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:38:21,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:38:21,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:38:21,783 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:38:21,784 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:38:21,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/bitvector/interleave_bits.i Unable to find full path for "g++" [2024-11-02 12:38:24,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:38:24,556 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:38:24,556 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/sv-benchmarks/c/bitvector/interleave_bits.i [2024-11-02 12:38:24,564 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/data/8a9e7e519/6d385fabb5d345fcaf7289fbe1fd5e04/FLAGac052ad6d [2024-11-02 12:38:24,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/data/8a9e7e519/6d385fabb5d345fcaf7289fbe1fd5e04 [2024-11-02 12:38:24,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:38:24,586 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:38:24,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:38:24,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:38:24,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:38:24,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:38:24" (1/1) ... [2024-11-02 12:38:24,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3363ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:24, skipping insertion in model container [2024-11-02 12:38:24,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:38:24" (1/1) ... [2024-11-02 12:38:24,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:38:24,899 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_2c16487b-0092-4c1f-a738-232a184f51fe/sv-benchmarks/c/bitvector/interleave_bits.i[1175,1188] [2024-11-02 12:38:24,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:38:24,948 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:38:24,965 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_2c16487b-0092-4c1f-a738-232a184f51fe/sv-benchmarks/c/bitvector/interleave_bits.i[1175,1188] [2024-11-02 12:38:24,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:38:25,002 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:38:25,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25 WrapperNode [2024-11-02 12:38:25,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:38:25,004 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:38:25,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:38:25,005 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:38:25,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25" (1/1) ... [2024-11-02 12:38:25,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25" (1/1) ... [2024-11-02 12:38:25,057 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 235 [2024-11-02 12:38:25,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:38:25,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:38:25,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:38:25,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:38:25,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25" (1/1) ... [2024-11-02 12:38:25,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25" (1/1) ... [2024-11-02 12:38:25,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25" (1/1) ... [2024-11-02 12:38:25,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25" (1/1) ... [2024-11-02 12:38:25,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25" (1/1) ... [2024-11-02 12:38:25,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25" (1/1) ... [2024-11-02 12:38:25,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25" (1/1) ... [2024-11-02 12:38:25,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25" (1/1) ... [2024-11-02 12:38:25,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:38:25,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:38:25,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:38:25,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:38:25,125 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25" (1/1) ... [2024-11-02 12:38:25,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:38:25,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:25,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:38:25,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:38:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:38:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:38:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:38:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:38:25,326 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:38:25,329 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:38:28,022 INFO L? ?]: Removed 86 outVars from TransFormulas that were not future-live. [2024-11-02 12:38:28,023 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:38:28,567 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:38:28,568 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:38:28,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:28 BoogieIcfgContainer [2024-11-02 12:38:28,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:38:28,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:38:28,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:38:28,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:38:28,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:38:24" (1/3) ... [2024-11-02 12:38:28,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cffa92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:38:28, skipping insertion in model container [2024-11-02 12:38:28,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:25" (2/3) ... [2024-11-02 12:38:28,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cffa92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:38:28, skipping insertion in model container [2024-11-02 12:38:28,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:28" (3/3) ... [2024-11-02 12:38:28,581 INFO L112 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2024-11-02 12:38:28,599 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:38:28,600 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:38:28,669 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:38:28,676 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;@30b286fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:38:28,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:38:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 12:38:28,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:38:28,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:28,687 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:38:28,688 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:28,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash 11463056, now seen corresponding path program 1 times [2024-11-02 12:38:28,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:28,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947282368] [2024-11-02 12:38:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:28,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:29,217 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 12:38:29,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:29,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947282368] [2024-11-02 12:38:29,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947282368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:29,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:29,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:38:29,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634426471] [2024-11-02 12:38:29,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:29,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:29,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:29,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:29,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:29,254 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 12:38:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:29,388 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2024-11-02 12:38:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:29,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2024-11-02 12:38:29,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:29,398 INFO L225 Difference]: With dead ends: 13 [2024-11-02 12:38:29,398 INFO L226 Difference]: Without dead ends: 6 [2024-11-02 12:38:29,401 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 12:38:29,405 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:29,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:29,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2024-11-02 12:38:29,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2024-11-02 12:38:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 12:38:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2024-11-02 12:38:29,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2024-11-02 12:38:29,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:29,447 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2024-11-02 12:38:29,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 12:38:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2024-11-02 12:38:29,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:38:29,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:29,449 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 12:38:29,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:38:29,450 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:29,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:29,450 INFO L85 PathProgramCache]: Analyzing trace with hash 355578897, now seen corresponding path program 1 times [2024-11-02 12:38:29,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:29,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068168220] [2024-11-02 12:38:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:29,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:29,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:29,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068168220] [2024-11-02 12:38:29,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068168220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:29,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269757598] [2024-11-02 12:38:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:29,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:29,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:29,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:29,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:38:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:29,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:38:29,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:30,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:38:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:30,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269757598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:38:30,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [426593426] [2024-11-02 12:38:30,125 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-02 12:38:30,129 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:38:30,134 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:38:30,142 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:38:30,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:38:31,313 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:38:31,338 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '38#true' at error location [2024-11-02 12:38:31,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:38:31,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:38:31,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-02 12:38:31,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398118630] [2024-11-02 12:38:31,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:38:31,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:38:31,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:31,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:38:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:38:31,344 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 12:38:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:31,478 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2024-11-02 12:38:31,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:38:31,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 5 [2024-11-02 12:38:31,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:31,480 INFO L225 Difference]: With dead ends: 12 [2024-11-02 12:38:31,480 INFO L226 Difference]: Without dead ends: 9 [2024-11-02 12:38:31,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:38:31,482 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:31,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-02 12:38:31,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-02 12:38:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 12:38:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-02 12:38:31,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-02 12:38:31,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:31,490 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-02 12:38:31,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 12:38:31,491 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-02 12:38:31,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:38:31,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:31,492 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2024-11-02 12:38:31,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:38:31,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:31,693 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:31,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:31,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1884160464, now seen corresponding path program 2 times [2024-11-02 12:38:31,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:31,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853432814] [2024-11-02 12:38:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:31,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:32,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:32,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853432814] [2024-11-02 12:38:32,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853432814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:32,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856050144] [2024-11-02 12:38:32,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:38:32,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:32,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:32,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:32,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:38:32,434 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-02 12:38:32,435 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:38:32,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-02 12:38:32,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:32,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:38:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:32,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856050144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:38:32,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1730285880] [2024-11-02 12:38:32,583 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-02 12:38:32,584 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:38:32,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:38:32,584 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:38:32,585 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:38:33,339 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:38:33,364 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '103#true' at error location [2024-11-02 12:38:33,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:38:33,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:38:33,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-02 12:38:33,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973091105] [2024-11-02 12:38:33,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:38:33,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 12:38:33,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:33,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 12:38:33,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-11-02 12:38:33,370 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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 12:38:33,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:33,826 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-02 12:38:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:38:33,828 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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 8 [2024-11-02 12:38:33,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:33,829 INFO L225 Difference]: With dead ends: 18 [2024-11-02 12:38:33,829 INFO L226 Difference]: Without dead ends: 15 [2024-11-02 12:38:33,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:38:33,830 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:33,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:38:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-02 12:38:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-02 12:38:33,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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 12:38:33,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-02 12:38:33,841 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2024-11-02 12:38:33,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:33,842 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-02 12:38:33,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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 12:38:33,843 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-02 12:38:33,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-02 12:38:33,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:33,844 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2024-11-02 12:38:33,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:38:34,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:34,045 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:34,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1623075376, now seen corresponding path program 3 times [2024-11-02 12:38:34,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:34,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444125267] [2024-11-02 12:38:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:34,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:35,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:35,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444125267] [2024-11-02 12:38:35,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444125267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:35,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736715796] [2024-11-02 12:38:35,171 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-02 12:38:35,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:35,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:35,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:35,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:38:35,748 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-02 12:38:35,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:38:35,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-02 12:38:35,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:35,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:38:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:36,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736715796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:38:36,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [466068997] [2024-11-02 12:38:36,257 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-02 12:38:36,257 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:38:36,258 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:38:36,258 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:38:36,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:38:38,912 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:38:39,016 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '222#true' at error location [2024-11-02 12:38:39,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:38:39,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:38:39,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-02 12:38:39,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855227480] [2024-11-02 12:38:39,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:38:39,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-02 12:38:39,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-02 12:38:39,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2024-11-02 12:38:39,021 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 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 12:38:40,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:40,267 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2024-11-02 12:38:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-02 12:38:40,269 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 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 14 [2024-11-02 12:38:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:40,270 INFO L225 Difference]: With dead ends: 24 [2024-11-02 12:38:40,270 INFO L226 Difference]: Without dead ends: 21 [2024-11-02 12:38:40,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=622, Unknown=0, NotChecked=0, Total=870 [2024-11-02 12:38:40,271 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:40,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-02 12:38:40,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-02 12:38:40,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-02 12:38:40,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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 12:38:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-11-02 12:38:40,280 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2024-11-02 12:38:40,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:40,280 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2024-11-02 12:38:40,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 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 12:38:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-11-02 12:38:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:38:40,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:40,284 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1] [2024-11-02 12:38:40,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 12:38:40,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:40,489 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:40,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:40,489 INFO L85 PathProgramCache]: Analyzing trace with hash 214338192, now seen corresponding path program 4 times [2024-11-02 12:38:40,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:40,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341465767] [2024-11-02 12:38:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:40,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:38:45,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:38:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:38:51,161 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:38:51,161 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:38:51,162 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:38:51,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:38:51,167 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1] [2024-11-02 12:38:51,227 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:38:51,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:38:51 BoogieIcfgContainer [2024-11-02 12:38:51,230 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:38:51,231 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:38:51,231 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:38:51,231 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:38:51,232 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:28" (3/4) ... [2024-11-02 12:38:51,235 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-02 12:38:51,236 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:38:51,237 INFO L158 Benchmark]: Toolchain (without parser) took 26650.82ms. Allocated memory was 213.9MB in the beginning and 539.0MB in the end (delta: 325.1MB). Free memory was 176.0MB in the beginning and 425.2MB in the end (delta: -249.3MB). Peak memory consumption was 78.0MB. Max. memory is 16.1GB. [2024-11-02 12:38:51,237 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 132.1MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:38:51,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.75ms. Allocated memory is still 213.9MB. Free memory was 175.4MB in the beginning and 162.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:38:51,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.34ms. Allocated memory is still 213.9MB. Free memory was 162.8MB in the beginning and 159.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 12:38:51,240 INFO L158 Benchmark]: Boogie Preprocessor took 61.71ms. Allocated memory is still 213.9MB. Free memory was 159.8MB in the beginning and 158.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:38:51,240 INFO L158 Benchmark]: RCFGBuilder took 3447.93ms. Allocated memory is still 213.9MB. Free memory was 158.3MB in the beginning and 108.1MB in the end (delta: 50.1MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. [2024-11-02 12:38:51,240 INFO L158 Benchmark]: TraceAbstraction took 22658.87ms. Allocated memory was 213.9MB in the beginning and 539.0MB in the end (delta: 325.1MB). Free memory was 107.1MB in the beginning and 426.3MB in the end (delta: -319.2MB). Peak memory consumption was 252.3MB. Max. memory is 16.1GB. [2024-11-02 12:38:51,241 INFO L158 Benchmark]: Witness Printer took 5.18ms. Allocated memory is still 539.0MB. Free memory is still 425.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:38:51,242 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 132.1MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 415.75ms. Allocated memory is still 213.9MB. Free memory was 175.4MB in the beginning and 162.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.34ms. Allocated memory is still 213.9MB. Free memory was 162.8MB in the beginning and 159.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.71ms. Allocated memory is still 213.9MB. Free memory was 159.8MB in the beginning and 158.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 3447.93ms. Allocated memory is still 213.9MB. Free memory was 158.3MB in the beginning and 108.1MB in the end (delta: 50.1MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. * TraceAbstraction took 22658.87ms. Allocated memory was 213.9MB in the beginning and 539.0MB in the end (delta: 325.1MB). Free memory was 107.1MB in the beginning and 426.3MB in the end (delta: -319.2MB). Peak memory consumption was 252.3MB. Max. memory is 16.1GB. * Witness Printer took 5.18ms. Allocated memory is still 539.0MB. Free memory is still 425.2MB. There was no memory consumed. 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 - UnprovableResult [Line: 25]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 50, overapproximation of bitwiseOr at line 55, overapproximation of bitwiseAnd at line 55. Possible FailurePath: [L42] unsigned short x = __VERIFIER_nondet_ushort(); [L43] unsigned short y = __VERIFIER_nondet_ushort(); [L44] unsigned int xx; [L45] unsigned int yy; [L46] unsigned int zz; [L47] unsigned int z = 0; [L48] unsigned int i = 0; VAL [i=0, z=0] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=1, x=52428, y=4, z=4294967296] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=2, x=52428, y=4, z=4294967299] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=3, x=52428, y=4, z=4294967299] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=4, x=52428, y=4, z=4294967299] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=5, x=52428, y=4, z=4294967299] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=6, x=52428, y=4, z=4294967299] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=7, x=52428, y=4, z=8589934595] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=8, x=52428, y=4, z=12884901891] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=9, x=52428, y=4, z=17179869188] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=10, x=52428, y=4, z=4] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=11, x=52428, y=4, z=-8589934588] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=12, x=52428, y=4, z=12884901892] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=13, x=52428, y=4, z=8589934596] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=14, x=52428, y=4, z=4294967301] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=15, x=52428, y=4, z=4294967301] [L49] COND TRUE i < sizeof(x) * 8 [L50] EXPR 1U << i [L50] EXPR x & (1U << i) [L50] EXPR (x & (1U << i)) << i [L50] EXPR 1U << i [L50] EXPR y & (1U << i) [L50] EXPR (y & (1U << i)) << (i + 1) [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=16, x=52428, y=4, z=8589934598] [L49] COND FALSE !(i < sizeof(x) * 8) [L53] xx = x [L54] yy = y [L55] EXPR xx | (xx << 8u) [L55] EXPR (xx | (xx << 8u)) & 16711935U [L55] xx = (xx | (xx << 8u)) & 16711935U [L56] EXPR xx | (xx << 4u) [L56] EXPR (xx | (xx << 4u)) & 252645135U [L56] xx = (xx | (xx << 4u)) & 252645135U [L57] EXPR xx | (xx << 2u) [L57] EXPR (xx | (xx << 2u)) & 858993459U [L57] xx = (xx | (xx << 2u)) & 858993459U [L58] EXPR xx | (xx << 1u) [L58] EXPR (xx | (xx << 1u)) & 1431655765U [L58] xx = (xx | (xx << 1u)) & 1431655765U [L59] EXPR yy | (yy << 8u) [L59] EXPR (yy | (yy << 8u)) & 16711935U [L59] yy = (yy | (yy << 8u)) & 16711935U [L60] EXPR yy | (yy << 4u) [L60] EXPR (yy | (yy << 4u)) & 252645135U [L60] yy = (yy | (yy << 4u)) & 252645135U [L61] EXPR yy | (yy << 2u) [L61] EXPR (yy | (yy << 2u)) & 858993459U [L61] yy = (yy | (yy << 2u)) & 858993459U [L62] EXPR yy | (yy << 1u) [L62] EXPR (yy | (yy << 1u)) & 1431655765U [L62] yy = (yy | (yy << 1u)) & 1431655765U [L64] EXPR xx | (yy << 1U) [L64] zz = xx | (yy << 1U) [L66] CALL __VERIFIER_assert(z == zz) [L24] COND TRUE !(cond) [L25] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.5s, OverallIterations: 5, TraceHistogramMax: 16, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 191 IncrementalHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 9 mSDtfsCounter, 191 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.9s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 269 SizeOfPredicates, 0 NumberOfNonLiveVariables, 297 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 0/198 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-02 12:38:51,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c16487b-0092-4c1f-a738-232a184f51fe/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...