./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX --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 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:42:39,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:42:39,704 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:42:39,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:42:39,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:42:39,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:42:39,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:42:39,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:42:39,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:42:39,759 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:42:39,759 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:42:39,760 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:42:39,761 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:42:39,761 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:42:39,762 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:42:39,762 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:42:39,763 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:42:39,763 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:42:39,764 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:42:39,764 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:42:39,765 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:42:39,768 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:42:39,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:42:39,769 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:42:39,770 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:42:39,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:42:39,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:42:39,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:42:39,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:42:39,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:42:39,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:42:39,774 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:42:39,774 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:42:39,774 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:42:39,775 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:42:39,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:42:39,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:42:39,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:42:39,776 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:42:39,797 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:42:39,797 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:42:39,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:42:39,800 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:42:39,800 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:42:39,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:42:39,801 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_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 [2023-11-12 00:42:40,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:42:40,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:42:40,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:42:40,175 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:42:40,175 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:42:40,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2023-11-12 00:42:43,315 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:42:43,536 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:42:43,536 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2023-11-12 00:42:43,544 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/data/96a76a2a6/5370de38dbc94e79816005f8b8aea26c/FLAG4ee59593e [2023-11-12 00:42:43,559 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/data/96a76a2a6/5370de38dbc94e79816005f8b8aea26c [2023-11-12 00:42:43,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:42:43,563 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:42:43,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:42:43,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:42:43,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:42:43,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40732b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43, skipping insertion in model container [2023-11-12 00:42:43,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,594 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:42:43,749 WARN L240 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_d36a6395-a474-4765-aaf0-c4cb6fea19a5/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2023-11-12 00:42:43,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:42:43,771 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:42:43,782 WARN L240 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_d36a6395-a474-4765-aaf0-c4cb6fea19a5/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2023-11-12 00:42:43,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:42:43,800 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:42:43,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43 WrapperNode [2023-11-12 00:42:43,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:42:43,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:42:43,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:42:43,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:42:43,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,832 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2023-11-12 00:42:43,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:42:43,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:42:43,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:42:43,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:42:43,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,844 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:42:43,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:42:43,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:42:43,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:42:43,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43" (1/1) ... [2023-11-12 00:42:43,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:42:43,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:42:43,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:42:43,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:42:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:42:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:42:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:42:43,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:42:44,075 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:42:44,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:42:44,251 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:42:44,273 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:42:44,273 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:42:44,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:42:44 BoogieIcfgContainer [2023-11-12 00:42:44,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:42:44,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:42:44,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:42:44,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:42:44,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:42:43" (1/3) ... [2023-11-12 00:42:44,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f53ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:42:44, skipping insertion in model container [2023-11-12 00:42:44,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:43" (2/3) ... [2023-11-12 00:42:44,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f53ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:42:44, skipping insertion in model container [2023-11-12 00:42:44,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:42:44" (3/3) ... [2023-11-12 00:42:44,285 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2023-11-12 00:42:44,303 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:42:44,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:42:44,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:42:44,358 INFO L357 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, mHoare=true, 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;@25956698, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:42:44,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:42:44,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-11-12 00:42:44,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:42:44,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:44,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:42:44,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:42:44,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:44,376 INFO L85 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2023-11-12 00:42:44,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:44,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247055846] [2023-11-12 00:42:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:44,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:42:44,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:44,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247055846] [2023-11-12 00:42:44,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247055846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:44,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:44,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:42:44,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261184002] [2023-11-12 00:42:44,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:44,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:42:44,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:42:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:42:44,678 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-12 00:42:44,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:44,734 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2023-11-12 00:42:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:42:44,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:42:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:44,745 INFO L225 Difference]: With dead ends: 16 [2023-11-12 00:42:44,746 INFO L226 Difference]: Without dead ends: 7 [2023-11-12 00:42:44,748 INFO L412 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 [2023-11-12 00:42:44,752 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:44,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:42:44,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-12 00:42:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-12 00:42:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-11-12 00:42:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-12 00:42:44,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-11-12 00:42:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:44,787 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-12 00:42:44,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-12 00:42:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-11-12 00:42:44,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:42:44,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:44,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:42:44,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:42:44,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:42:44,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:44,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2023-11-12 00:42:44,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:44,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520032707] [2023-11-12 00:42:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:44,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:42:45,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:45,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520032707] [2023-11-12 00:42:45,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520032707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:42:45,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006662737] [2023-11-12 00:42:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:45,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:42:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:42:45,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:42:45,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:42:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:45,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 00:42:45,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:42:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:42:45,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:42:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:42:45,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006662737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:42:45,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2118187219] [2023-11-12 00:42:45,627 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-12 00:42:45,627 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:42:45,632 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:42:45,639 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:42:45,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:42:46,064 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:42:46,295 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '82#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~j~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (not (= |ULTIMATE.start_main_~k~0#1| 0)) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-12 00:42:46,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:42:46,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:42:46,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-12 00:42:46,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689065291] [2023-11-12 00:42:46,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:42:46,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:42:46,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:46,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:42:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:42:46,303 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-11-12 00:42:46,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:46,370 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2023-11-12 00:42:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:46,371 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 6 [2023-11-12 00:42:46,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:46,372 INFO L225 Difference]: With dead ends: 11 [2023-11-12 00:42:46,372 INFO L226 Difference]: Without dead ends: 8 [2023-11-12 00:42:46,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:42:46,376 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:46,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:42:46,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-12 00:42:46,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-12 00:42:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-12 00:42:46,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-11-12 00:42:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:46,386 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-12 00:42:46,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-11-12 00:42:46,387 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-12 00:42:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:42:46,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:46,388 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-12 00:42:46,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:42:46,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:42:46,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:42:46,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:46,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1181353118, now seen corresponding path program 2 times [2023-11-12 00:42:46,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:46,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391614375] [2023-11-12 00:42:46,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:46,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:42:46,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:46,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391614375] [2023-11-12 00:42:46,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391614375] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:42:46,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580129178] [2023-11-12 00:42:46,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:42:46,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:42:46,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:42:46,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:42:46,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:42:46,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 00:42:46,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:42:46,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-12 00:42:46,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:42:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:42:46,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:42:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:42:47,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580129178] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:42:47,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1139344373] [2023-11-12 00:42:47,154 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-12 00:42:47,154 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:42:47,154 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:42:47,155 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:42:47,155 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:42:47,335 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:42:47,554 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '161#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~j~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (not (= |ULTIMATE.start_main_~k~0#1| 0)) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-12 00:42:47,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:42:47,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:42:47,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2023-11-12 00:42:47,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282290282] [2023-11-12 00:42:47,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:42:47,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 00:42:47,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:47,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 00:42:47,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:42:47,558 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:47,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:47,704 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2023-11-12 00:42:47,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:42:47,704 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 00:42:47,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:47,705 INFO L225 Difference]: With dead ends: 10 [2023-11-12 00:42:47,705 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 00:42:47,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:42:47,710 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:47,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 3 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:42:47,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 00:42:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 00:42:47,715 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) [2023-11-12 00:42:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 00:42:47,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2023-11-12 00:42:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:47,716 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 00:42:47,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:42:47,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 00:42:47,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 00:42:47,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:42:47,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:42:47,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:42:47,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 00:42:47,975 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 00:42:47,979 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2023-11-12 00:42:47,980 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-11-12 00:42:47,981 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 00:42:47,981 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 19 29) no Hoare annotation was computed. [2023-11-12 00:42:47,981 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-11-12 00:42:47,982 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) |ULTIMATE.start_main_~n~0#1|)) [2023-11-12 00:42:47,982 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-11-12 00:42:47,982 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2023-11-12 00:42:47,987 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-11-12 00:42:47,989 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:42:48,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:42:48 BoogieIcfgContainer [2023-11-12 00:42:48,001 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:42:48,002 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:42:48,002 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:42:48,002 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:42:48,003 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:42:44" (3/4) ... [2023-11-12 00:42:48,005 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 00:42:48,013 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-12 00:42:48,013 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-12 00:42:48,014 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 00:42:48,014 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:42:48,113 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:42:48,114 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 00:42:48,114 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:42:48,114 INFO L158 Benchmark]: Toolchain (without parser) took 4551.12ms. Allocated memory is still 169.9MB. Free memory was 139.3MB in the beginning and 62.5MB in the end (delta: 76.8MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. [2023-11-12 00:42:48,115 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 130.0MB. Free memory is still 101.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:42:48,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.39ms. Allocated memory is still 169.9MB. Free memory was 139.1MB in the beginning and 133.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2023-11-12 00:42:48,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.40ms. Allocated memory is still 169.9MB. Free memory was 133.8MB in the beginning and 132.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:42:48,116 INFO L158 Benchmark]: Boogie Preprocessor took 20.52ms. Allocated memory is still 169.9MB. Free memory was 132.5MB in the beginning and 131.7MB in the end (delta: 834.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:42:48,116 INFO L158 Benchmark]: RCFGBuilder took 421.42ms. Allocated memory is still 169.9MB. Free memory was 131.7MB in the beginning and 133.5MB in the end (delta: -1.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:42:48,117 INFO L158 Benchmark]: TraceAbstraction took 3723.19ms. Allocated memory is still 169.9MB. Free memory was 132.7MB in the beginning and 66.7MB in the end (delta: 66.0MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. [2023-11-12 00:42:48,117 INFO L158 Benchmark]: Witness Printer took 111.77ms. Allocated memory is still 169.9MB. Free memory was 66.7MB in the beginning and 62.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:42:48,120 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 130.0MB. Free memory is still 101.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.39ms. Allocated memory is still 169.9MB. Free memory was 139.1MB in the beginning and 133.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.40ms. Allocated memory is still 169.9MB. Free memory was 133.8MB in the beginning and 132.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.52ms. Allocated memory is still 169.9MB. Free memory was 132.5MB in the beginning and 131.7MB in the end (delta: 834.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 421.42ms. Allocated memory is still 169.9MB. Free memory was 131.7MB in the beginning and 133.5MB in the end (delta: -1.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3723.19ms. Allocated memory is still 169.9MB. Free memory was 132.7MB in the beginning and 66.7MB in the end (delta: 66.0MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. * Witness Printer took 111.77ms. Allocated memory is still 169.9MB. Free memory was 66.7MB in the beginning and 62.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 16]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 66 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 10 mSDtfsCounter, 66 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 12 HoareAnnotationTreeSize, 1 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 37 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 241 SizeOfPredicates, 11 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 1/12 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: 24]: Loop Invariant Derived loop invariant: (((0 <= k) && (1 <= n)) && ((j + k) == n)) RESULT: Ultimate proved your program to be correct! [2023-11-12 00:42:48,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d36a6395-a474-4765-aaf0-c4cb6fea19a5/bin/utaipan-verify-NcY6lQBIFX/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