./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label45.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_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/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_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label45.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/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_83c15bc6-4590-4b5a-82e4-03b4125e382f/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 b8e8aa0b516ef9fd60c8444f7020a693e2ee03ee59580de825705d1497a8a117 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:29:02,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:29:02,365 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:29:02,370 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:29:02,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:29:02,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:29:02,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:29:02,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:29:02,410 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:29:02,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:29:02,411 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:29:02,412 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:29:02,413 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:29:02,416 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:29:02,416 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:29:02,417 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:29:02,417 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:29:02,417 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:29:02,418 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:29:02,418 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:29:02,418 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:29:02,423 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:29:02,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:29:02,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:29:02,425 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:29:02,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:29:02,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:29:02,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:29:02,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:29:02,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:29:02,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:29:02,428 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:29:02,428 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:29:02,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:29:02,428 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:29:02,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:29:02,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:29:02,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:29:02,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:29:02,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:29:02,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:29:02,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:29:02,432 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:29:02,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:29:02,433 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:29:02,433 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:29:02,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:29:02,433 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_83c15bc6-4590-4b5a-82e4-03b4125e382f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8e8aa0b516ef9fd60c8444f7020a693e2ee03ee59580de825705d1497a8a117 [2024-11-02 12:29:02,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:29:02,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:29:02,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:29:02,841 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:29:02,841 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:29:02,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/eca-rers2012/Problem01_label45.c Unable to find full path for "g++" [2024-11-02 12:29:05,204 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:29:05,494 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:29:05,495 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/sv-benchmarks/c/eca-rers2012/Problem01_label45.c [2024-11-02 12:29:05,515 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/data/61c06f86e/db10b3df3f8748eca2e94847c575ff16/FLAG98ceb8424 [2024-11-02 12:29:05,540 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/data/61c06f86e/db10b3df3f8748eca2e94847c575ff16 [2024-11-02 12:29:05,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:29:05,545 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:29:05,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:29:05,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:29:05,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:29:05,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:29:05" (1/1) ... [2024-11-02 12:29:05,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab2ca03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:05, skipping insertion in model container [2024-11-02 12:29:05,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:29:05" (1/1) ... [2024-11-02 12:29:05,606 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:29:06,037 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_83c15bc6-4590-4b5a-82e4-03b4125e382f/sv-benchmarks/c/eca-rers2012/Problem01_label45.c[20099,20112] [2024-11-02 12:29:06,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:29:06,097 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:29:06,235 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_83c15bc6-4590-4b5a-82e4-03b4125e382f/sv-benchmarks/c/eca-rers2012/Problem01_label45.c[20099,20112] [2024-11-02 12:29:06,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:29:06,282 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:29:06,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06 WrapperNode [2024-11-02 12:29:06,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:29:06,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:29:06,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:29:06,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:29:06,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06" (1/1) ... [2024-11-02 12:29:06,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06" (1/1) ... [2024-11-02 12:29:06,382 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2024-11-02 12:29:06,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:29:06,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:29:06,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:29:06,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:29:06,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06" (1/1) ... [2024-11-02 12:29:06,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06" (1/1) ... [2024-11-02 12:29:06,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06" (1/1) ... [2024-11-02 12:29:06,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06" (1/1) ... [2024-11-02 12:29:06,424 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06" (1/1) ... [2024-11-02 12:29:06,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06" (1/1) ... [2024-11-02 12:29:06,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06" (1/1) ... [2024-11-02 12:29:06,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06" (1/1) ... [2024-11-02 12:29:06,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:29:06,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:29:06,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:29:06,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:29:06,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06" (1/1) ... [2024-11-02 12:29:06,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:29:06,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:06,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:29:06,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:29:06,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:29:06,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:29:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:29:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:29:06,657 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:29:06,660 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:29:08,000 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-02 12:29:08,001 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:29:08,256 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:29:08,256 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:29:08,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:29:08 BoogieIcfgContainer [2024-11-02 12:29:08,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:29:08,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:29:08,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:29:08,263 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:29:08,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:29:05" (1/3) ... [2024-11-02 12:29:08,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ed995f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:29:08, skipping insertion in model container [2024-11-02 12:29:08,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:06" (2/3) ... [2024-11-02 12:29:08,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ed995f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:29:08, skipping insertion in model container [2024-11-02 12:29:08,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:29:08" (3/3) ... [2024-11-02 12:29:08,267 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label45.c [2024-11-02 12:29:08,286 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:29:08,287 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:29:08,360 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:29:08,367 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;@6511426, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:29:08,368 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:29:08,373 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 12:29:08,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-02 12:29:08,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:08,383 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 12:29:08,383 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:08,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:08,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1230155671, now seen corresponding path program 1 times [2024-11-02 12:29:08,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:08,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597244549] [2024-11-02 12:29:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:08,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:09,001 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 12:29:09,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:09,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597244549] [2024-11-02 12:29:09,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597244549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:09,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:09,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:29:09,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321247975] [2024-11-02 12:29:09,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:09,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:09,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:09,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:09,065 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 12:29:09,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:09,562 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2024-11-02 12:29:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:09,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-02 12:29:09,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:09,579 INFO L225 Difference]: With dead ends: 224 [2024-11-02 12:29:09,579 INFO L226 Difference]: Without dead ends: 145 [2024-11-02 12:29:09,582 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 12:29:09,589 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:09,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:29:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-02 12:29:09,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-02 12:29:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 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 12:29:09,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2024-11-02 12:29:09,639 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2024-11-02 12:29:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:09,640 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2024-11-02 12:29:09,640 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 12:29:09,640 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2024-11-02 12:29:09,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-02 12:29:09,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:09,643 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:09,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:29:09,644 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:09,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash -398810582, now seen corresponding path program 1 times [2024-11-02 12:29:09,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:09,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371096611] [2024-11-02 12:29:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:09,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:09,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:09,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371096611] [2024-11-02 12:29:09,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371096611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:09,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:09,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:29:09,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041896693] [2024-11-02 12:29:09,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:09,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:09,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:09,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:09,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:09,807 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 12:29:10,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:10,278 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2024-11-02 12:29:10,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:10,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2024-11-02 12:29:10,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:10,281 INFO L225 Difference]: With dead ends: 431 [2024-11-02 12:29:10,281 INFO L226 Difference]: Without dead ends: 287 [2024-11-02 12:29:10,282 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 12:29:10,283 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 80 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:10,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 34 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:29:10,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-02 12:29:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-02 12:29:10,300 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 12:29:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2024-11-02 12:29:10,302 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2024-11-02 12:29:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:10,302 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2024-11-02 12:29:10,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 12:29:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2024-11-02 12:29:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-02 12:29:10,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:10,306 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 12:29:10,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:29:10,307 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:10,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:10,308 INFO L85 PathProgramCache]: Analyzing trace with hash -986292987, now seen corresponding path program 1 times [2024-11-02 12:29:10,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:10,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302809682] [2024-11-02 12:29:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:10,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:10,513 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 12:29:10,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:10,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302809682] [2024-11-02 12:29:10,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302809682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:10,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:10,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:29:10,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117246865] [2024-11-02 12:29:10,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:10,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:10,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:10,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:10,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:10,521 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 12:29:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:10,980 INFO L93 Difference]: Finished difference Result 715 states and 1184 transitions. [2024-11-02 12:29:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:10,981 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 12:29:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:10,985 INFO L225 Difference]: With dead ends: 715 [2024-11-02 12:29:10,986 INFO L226 Difference]: Without dead ends: 429 [2024-11-02 12:29:10,989 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 12:29:10,991 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 12:29:10,991 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 12:29:10,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-02 12:29:11,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2024-11-02 12:29:11,028 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 12:29:11,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 587 transitions. [2024-11-02 12:29:11,030 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 587 transitions. Word has length 105 [2024-11-02 12:29:11,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:11,031 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 587 transitions. [2024-11-02 12:29:11,031 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 12:29:11,031 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 587 transitions. [2024-11-02 12:29:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-02 12:29:11,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:11,044 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 12:29:11,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:29:11,044 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:11,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:11,045 INFO L85 PathProgramCache]: Analyzing trace with hash 500004815, now seen corresponding path program 1 times [2024-11-02 12:29:11,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:11,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729334995] [2024-11-02 12:29:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:11,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:11,370 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 12:29:11,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:11,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729334995] [2024-11-02 12:29:11,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729334995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:11,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:11,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:29:11,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694967254] [2024-11-02 12:29:11,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:11,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:11,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:11,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:11,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:11,379 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 12:29:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:11,775 INFO L93 Difference]: Finished difference Result 715 states and 1173 transitions. [2024-11-02 12:29:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:11,776 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 12:29:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:11,778 INFO L225 Difference]: With dead ends: 715 [2024-11-02 12:29:11,778 INFO L226 Difference]: Without dead ends: 358 [2024-11-02 12:29:11,779 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 12:29:11,781 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 12:29:11,782 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 12:29:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-02 12:29:11,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2024-11-02 12:29:11,795 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 12:29:11,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2024-11-02 12:29:11,797 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 109 [2024-11-02 12:29:11,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:11,797 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2024-11-02 12:29:11,798 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 12:29:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2024-11-02 12:29:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-02 12:29:11,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:11,833 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 12:29:11,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:29:11,834 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:11,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:11,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1607138311, now seen corresponding path program 1 times [2024-11-02 12:29:11,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:11,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270573633] [2024-11-02 12:29:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:11,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:12,353 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 12:29:12,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:12,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270573633] [2024-11-02 12:29:12,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270573633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189545754] [2024-11-02 12:29:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:12,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:12,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:12,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:12,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:29:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:12,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:29:12,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:12,809 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 12:29:12,810 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:29:12,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189545754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:12,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:29:12,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-02 12:29:12,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076411609] [2024-11-02 12:29:12,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:12,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:12,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:12,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:12,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:29:12,817 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 12:29:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:13,298 INFO L93 Difference]: Finished difference Result 715 states and 1161 transitions. [2024-11-02 12:29:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:13,300 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 12:29:13,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:13,302 INFO L225 Difference]: With dead ends: 715 [2024-11-02 12:29:13,302 INFO L226 Difference]: Without dead ends: 358 [2024-11-02 12:29:13,305 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 12:29:13,306 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:13,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 126 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:29:13,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-02 12:29:13,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 287. [2024-11-02 12:29:13,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.486013986013986) internal successors, (425), 286 states have internal predecessors, (425), 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 12:29:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 425 transitions. [2024-11-02 12:29:13,317 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 425 transitions. Word has length 113 [2024-11-02 12:29:13,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:13,318 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 425 transitions. [2024-11-02 12:29:13,318 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 12:29:13,318 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 425 transitions. [2024-11-02 12:29:13,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-02 12:29:13,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:13,321 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 12:29:13,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:29:13,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:13,522 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:13,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:13,522 INFO L85 PathProgramCache]: Analyzing trace with hash -996646935, now seen corresponding path program 1 times [2024-11-02 12:29:13,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:13,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703714976] [2024-11-02 12:29:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:13,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:13,869 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 12:29:13,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:13,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703714976] [2024-11-02 12:29:13,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703714976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336517088] [2024-11-02 12:29:13,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:13,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:13,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:13,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:13,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:29:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:14,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:29:14,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:14,205 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 12:29:14,205 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:29:14,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336517088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:14,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:29:14,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-02 12:29:14,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823651141] [2024-11-02 12:29:14,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:14,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:14,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:14,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:14,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:29:14,208 INFO L87 Difference]: Start difference. First operand 287 states and 425 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 12:29:14,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:14,617 INFO L93 Difference]: Finished difference Result 431 states and 635 transitions. [2024-11-02 12:29:14,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:14,618 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 12:29:14,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:14,620 INFO L225 Difference]: With dead ends: 431 [2024-11-02 12:29:14,620 INFO L226 Difference]: Without dead ends: 429 [2024-11-02 12:29:14,621 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 12:29:14,622 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:14,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 27 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:29:14,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-02 12:29:14,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 287. [2024-11-02 12:29:14,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.486013986013986) internal successors, (425), 286 states have internal predecessors, (425), 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 12:29:14,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 425 transitions. [2024-11-02 12:29:14,634 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 425 transitions. Word has length 125 [2024-11-02 12:29:14,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:14,635 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 425 transitions. [2024-11-02 12:29:14,635 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 12:29:14,635 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 425 transitions. [2024-11-02 12:29:14,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-02 12:29:14,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:14,645 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:14,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:29:14,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:14,846 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:14,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:14,847 INFO L85 PathProgramCache]: Analyzing trace with hash 770420458, now seen corresponding path program 1 times [2024-11-02 12:29:14,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:14,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093124775] [2024-11-02 12:29:14,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:14,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 12:29:15,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:15,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093124775] [2024-11-02 12:29:15,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093124775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:15,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:15,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:29:15,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667268843] [2024-11-02 12:29:15,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:15,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:15,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:15,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:15,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:15,010 INFO L87 Difference]: Start difference. First operand 287 states and 425 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 12:29:15,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:15,443 INFO L93 Difference]: Finished difference Result 786 states and 1152 transitions. [2024-11-02 12:29:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:15,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 129 [2024-11-02 12:29:15,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:15,447 INFO L225 Difference]: With dead ends: 786 [2024-11-02 12:29:15,448 INFO L226 Difference]: Without dead ends: 500 [2024-11-02 12:29:15,448 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 12:29:15,449 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:15,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 27 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:29:15,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-02 12:29:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2024-11-02 12:29:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.4228971962616823) internal successors, (609), 428 states have internal predecessors, (609), 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 12:29:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 609 transitions. [2024-11-02 12:29:15,465 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 609 transitions. Word has length 129 [2024-11-02 12:29:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:15,465 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 609 transitions. [2024-11-02 12:29:15,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 12:29:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 609 transitions. [2024-11-02 12:29:15,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-02 12:29:15,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:15,468 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2024-11-02 12:29:15,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:29:15,469 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:15,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:15,470 INFO L85 PathProgramCache]: Analyzing trace with hash 800769160, now seen corresponding path program 1 times [2024-11-02 12:29:15,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:15,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273244574] [2024-11-02 12:29:15,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:15,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-02 12:29:15,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:15,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273244574] [2024-11-02 12:29:15,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273244574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:15,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:15,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:29:15,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2627187] [2024-11-02 12:29:15,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:15,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:15,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:15,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:15,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:15,713 INFO L87 Difference]: Start difference. First operand 429 states and 609 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 12:29:16,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:16,230 INFO L93 Difference]: Finished difference Result 1212 states and 1704 transitions. [2024-11-02 12:29:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:16,231 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 138 [2024-11-02 12:29:16,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:16,234 INFO L225 Difference]: With dead ends: 1212 [2024-11-02 12:29:16,234 INFO L226 Difference]: Without dead ends: 784 [2024-11-02 12:29:16,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:16,236 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 71 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:16,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 31 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:29:16,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-02 12:29:16,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 571. [2024-11-02 12:29:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.4228070175438596) internal successors, (811), 570 states have internal predecessors, (811), 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 12:29:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 811 transitions. [2024-11-02 12:29:16,255 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 811 transitions. Word has length 138 [2024-11-02 12:29:16,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:16,256 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 811 transitions. [2024-11-02 12:29:16,256 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 12:29:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 811 transitions. [2024-11-02 12:29:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-02 12:29:16,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:16,259 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 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, 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] [2024-11-02 12:29:16,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:29:16,259 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:16,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:16,260 INFO L85 PathProgramCache]: Analyzing trace with hash 975542297, now seen corresponding path program 1 times [2024-11-02 12:29:16,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:16,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295128054] [2024-11-02 12:29:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:16,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-02 12:29:16,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:16,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295128054] [2024-11-02 12:29:16,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295128054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:16,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896660052] [2024-11-02 12:29:16,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:16,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:16,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:16,617 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:16,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:29:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:16,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:29:16,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 12:29:16,970 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:29:16,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896660052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:16,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:29:16,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-02 12:29:16,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604701731] [2024-11-02 12:29:16,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:16,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:16,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:16,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:16,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:29:16,976 INFO L87 Difference]: Start difference. First operand 571 states and 811 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 12:29:17,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:17,498 INFO L93 Difference]: Finished difference Result 1354 states and 1888 transitions. [2024-11-02 12:29:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:17,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 145 [2024-11-02 12:29:17,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:17,502 INFO L225 Difference]: With dead ends: 1354 [2024-11-02 12:29:17,502 INFO L226 Difference]: Without dead ends: 784 [2024-11-02 12:29:17,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 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 12:29:17,507 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 19 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:17,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 138 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:29:17,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-02 12:29:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 571. [2024-11-02 12:29:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.3596491228070176) internal successors, (775), 570 states have internal predecessors, (775), 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 12:29:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 775 transitions. [2024-11-02 12:29:17,529 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 775 transitions. Word has length 145 [2024-11-02 12:29:17,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:17,530 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 775 transitions. [2024-11-02 12:29:17,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 12:29:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 775 transitions. [2024-11-02 12:29:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-02 12:29:17,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:17,534 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-02 12:29:17,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 12:29:17,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:17,735 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:17,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:17,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1319840626, now seen corresponding path program 1 times [2024-11-02 12:29:17,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:17,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670722700] [2024-11-02 12:29:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:17,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-02 12:29:18,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:18,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670722700] [2024-11-02 12:29:18,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670722700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:18,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:18,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:29:18,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524145541] [2024-11-02 12:29:18,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:18,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:18,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:18,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:18,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:18,008 INFO L87 Difference]: Start difference. First operand 571 states and 775 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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 12:29:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:18,384 INFO L93 Difference]: Finished difference Result 1283 states and 1727 transitions. [2024-11-02 12:29:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:18,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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 154 [2024-11-02 12:29:18,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:18,387 INFO L225 Difference]: With dead ends: 1283 [2024-11-02 12:29:18,387 INFO L226 Difference]: Without dead ends: 713 [2024-11-02 12:29:18,388 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 12:29:18,389 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 48 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:18,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 58 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:29:18,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-02 12:29:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2024-11-02 12:29:18,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.321629213483146) internal successors, (941), 712 states have internal predecessors, (941), 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 12:29:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 941 transitions. [2024-11-02 12:29:18,406 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 941 transitions. Word has length 154 [2024-11-02 12:29:18,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:18,406 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 941 transitions. [2024-11-02 12:29:18,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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 12:29:18,406 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 941 transitions. [2024-11-02 12:29:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-02 12:29:18,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:18,409 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-02 12:29:18,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:29:18,409 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:18,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:18,410 INFO L85 PathProgramCache]: Analyzing trace with hash -605844771, now seen corresponding path program 1 times [2024-11-02 12:29:18,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:18,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888596764] [2024-11-02 12:29:18,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:18,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-02 12:29:18,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:18,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888596764] [2024-11-02 12:29:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888596764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:18,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176901960] [2024-11-02 12:29:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:18,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:18,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:18,744 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:18,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:29:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:18,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:29:18,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-02 12:29:19,041 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:29:19,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176901960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:19,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:29:19,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-02 12:29:19,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913342001] [2024-11-02 12:29:19,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:19,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:19,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:19,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:19,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:29:19,043 INFO L87 Difference]: Start difference. First operand 713 states and 941 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 12:29:19,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:19,474 INFO L93 Difference]: Finished difference Result 1778 states and 2343 transitions. [2024-11-02 12:29:19,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:19,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 156 [2024-11-02 12:29:19,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:19,476 INFO L225 Difference]: With dead ends: 1778 [2024-11-02 12:29:19,476 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:29:19,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 155 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 12:29:19,478 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 7 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:19,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 129 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:29:19,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:29:19,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:29:19,480 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 12:29:19,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:29:19,480 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 156 [2024-11-02 12:29:19,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:19,481 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:29:19,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 12:29:19,482 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:29:19,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:29:19,485 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:29:19,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 12:29:19,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:19,695 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:19,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 12:29:20,023 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:29:20,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:29:20 BoogieIcfgContainer [2024-11-02 12:29:20,049 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:29:20,050 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:29:20,050 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:29:20,050 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:29:20,051 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:29:08" (3/4) ... [2024-11-02 12:29:20,055 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:29:20,077 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 120 nodes and edges [2024-11-02 12:29:20,079 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-02 12:29:20,080 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-02 12:29:20,081 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:29:20,244 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:29:20,245 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:29:20,245 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:29:20,246 INFO L158 Benchmark]: Toolchain (without parser) took 14700.97ms. Allocated memory was 148.9MB in the beginning and 289.4MB in the end (delta: 140.5MB). Free memory was 107.2MB in the beginning and 150.4MB in the end (delta: -43.3MB). Peak memory consumption was 98.6MB. Max. memory is 16.1GB. [2024-11-02 12:29:20,246 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 148.9MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:29:20,247 INFO L158 Benchmark]: CACSL2BoogieTranslator took 736.58ms. Allocated memory is still 148.9MB. Free memory was 107.2MB in the beginning and 77.4MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-02 12:29:20,247 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.53ms. Allocated memory is still 148.9MB. Free memory was 77.4MB in the beginning and 71.3MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-02 12:29:20,247 INFO L158 Benchmark]: Boogie Preprocessor took 70.85ms. Allocated memory is still 148.9MB. Free memory was 71.3MB in the beginning and 66.9MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 12:29:20,248 INFO L158 Benchmark]: RCFGBuilder took 1802.25ms. Allocated memory was 148.9MB in the beginning and 195.0MB in the end (delta: 46.1MB). Free memory was 66.9MB in the beginning and 111.5MB in the end (delta: -44.6MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. [2024-11-02 12:29:20,248 INFO L158 Benchmark]: TraceAbstraction took 11790.11ms. Allocated memory was 195.0MB in the beginning and 289.4MB in the end (delta: 94.4MB). Free memory was 110.5MB in the beginning and 164.0MB in the end (delta: -53.5MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2024-11-02 12:29:20,249 INFO L158 Benchmark]: Witness Printer took 195.54ms. Allocated memory is still 289.4MB. Free memory was 163.0MB in the beginning and 150.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:29:20,251 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 148.9MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 736.58ms. Allocated memory is still 148.9MB. Free memory was 107.2MB in the beginning and 77.4MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.53ms. Allocated memory is still 148.9MB. Free memory was 77.4MB in the beginning and 71.3MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.85ms. Allocated memory is still 148.9MB. Free memory was 71.3MB in the beginning and 66.9MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1802.25ms. Allocated memory was 148.9MB in the beginning and 195.0MB in the end (delta: 46.1MB). Free memory was 66.9MB in the beginning and 111.5MB in the end (delta: -44.6MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. * TraceAbstraction took 11790.11ms. Allocated memory was 195.0MB in the beginning and 289.4MB in the end (delta: 94.4MB). Free memory was 110.5MB in the beginning and 164.0MB in the end (delta: -53.5MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. * Witness Printer took 195.54ms. Allocated memory is still 289.4MB. Free memory was 163.0MB in the beginning and 150.4MB 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: 537]: 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: 11.4s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 473 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 473 mSDsluCounter, 683 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 616 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2367 IncrementalHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 616 mSolverCounterUnsat, 641 mSDtfsCounter, 2367 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 562 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=713occurred in iteration=10, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 781 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1861 NumberOfCodeBlocks, 1861 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1846 ConstructedInterpolants, 0 QuantifiedInterpolants, 3382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1401 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 1054/1066 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: (((((((6 <= a16) && (a21 <= 0)) || (((a21 <= 0) && (a17 == 1)) && (a20 == 1))) || ((a21 == 1) && (a16 <= 4))) || ((a21 <= 0) && (a16 <= 4))) || ((14 <= a8) && (a21 == 1))) || ((a21 == 1) && (a20 == 1))) RESULT: Ultimate proved your program to be correct! [2024-11-02 12:29:20,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c15bc6-4590-4b5a-82e4-03b4125e382f/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