./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/NonTermination3-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination3-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fabc9d8a61dd824da0c561a6d62c57fe8eb320f6ad8009599cd12699fa04e01c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:20:14,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:20:14,997 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2024-11-09 06:20:15,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:20:15,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:20:15,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:20:15,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:20:15,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:20:15,043 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:20:15,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:20:15,043 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:20:15,044 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:20:15,044 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:20:15,044 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:20:15,046 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:20:15,046 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:20:15,048 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:20:15,051 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:20:15,051 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:20:15,052 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:20:15,052 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:20:15,053 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:20:15,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:20:15,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:20:15,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:20:15,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:20:15,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:20:15,054 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 06:20:15,055 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 06:20:15,060 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 06:20:15,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:20:15,061 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:20:15,061 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:20:15,061 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:20:15,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:20:15,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:20:15,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:20:15,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:20:15,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:20:15,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:20:15,064 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:20:15,064 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:20:15,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:20:15,065 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:20:15,065 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:20:15,065 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:20:15,065 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_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fabc9d8a61dd824da0c561a6d62c57fe8eb320f6ad8009599cd12699fa04e01c [2024-11-09 06:20:15,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:20:15,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:20:15,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:20:15,402 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:20:15,402 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:20:15,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/termination-crafted/NonTermination3-1.c Unable to find full path for "g++" [2024-11-09 06:20:17,367 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:20:17,535 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:20:17,535 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2024-11-09 06:20:17,541 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/data/c99ab051b/c160d1bf60d94b7e91109a29d02cd37d/FLAG00f40c426 [2024-11-09 06:20:17,563 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/data/c99ab051b/c160d1bf60d94b7e91109a29d02cd37d [2024-11-09 06:20:17,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:20:17,568 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:20:17,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:20:17,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:20:17,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:20:17,580 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a70653d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17, skipping insertion in model container [2024-11-09 06:20:17,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,598 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:20:17,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:20:17,773 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:20:17,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:20:17,805 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:20:17,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17 WrapperNode [2024-11-09 06:20:17,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:20:17,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:20:17,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:20:17,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:20:17,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,835 INFO L138 Inliner]: procedures = 8, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2024-11-09 06:20:17,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:20:17,836 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:20:17,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:20:17,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:20:17,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,860 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:20:17,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:20:17,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:20:17,872 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:20:17,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17" (1/1) ... [2024-11-09 06:20:17,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:20:17,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:20:17,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:20:17,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:20:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:20:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:20:17,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:20:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:20:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:20:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:20:18,001 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:20:18,003 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:20:18,179 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-09 06:20:18,179 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:20:18,214 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:20:18,214 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:20:18,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:20:18 BoogieIcfgContainer [2024-11-09 06:20:18,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:20:18,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:20:18,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:20:18,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:20:18,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:20:17" (1/3) ... [2024-11-09 06:20:18,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165a9267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:20:18, skipping insertion in model container [2024-11-09 06:20:18,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:17" (2/3) ... [2024-11-09 06:20:18,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165a9267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:20:18, skipping insertion in model container [2024-11-09 06:20:18,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:20:18" (3/3) ... [2024-11-09 06:20:18,225 INFO L112 eAbstractionObserver]: Analyzing ICFG NonTermination3-1.c [2024-11-09 06:20:18,242 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:20:18,243 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-09 06:20:18,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:20:18,297 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=None, 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;@15a76515, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:20:18,297 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 06:20:18,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 2.0) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:18,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 06:20:18,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:18,309 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 06:20:18,310 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 06:20:18,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:18,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2448982, now seen corresponding path program 1 times [2024-11-09 06:20:18,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:18,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384670563] [2024-11-09 06:20:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:18,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:18,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:18,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384670563] [2024-11-09 06:20:18,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384670563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:18,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:18,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 06:20:18,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464628856] [2024-11-09 06:20:18,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:18,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:20:18,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:18,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:20:18,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:20:18,654 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 2.0) internal successors, (24), 19 states have internal predecessors, (24), 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, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:18,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:18,707 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2024-11-09 06:20:18,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:20:18,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 06:20:18,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:18,725 INFO L225 Difference]: With dead ends: 17 [2024-11-09 06:20:18,725 INFO L226 Difference]: Without dead ends: 16 [2024-11-09 06:20:18,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:20:18,730 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:18,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 11 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:20:18,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-09 06:20:18,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-09 06:20:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-09 06:20:18,765 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 4 [2024-11-09 06:20:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:18,765 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-09 06:20:18,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:18,766 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-09 06:20:18,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 06:20:18,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:18,767 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 06:20:18,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:20:18,768 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 06:20:18,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2448983, now seen corresponding path program 1 times [2024-11-09 06:20:18,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:18,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031810054] [2024-11-09 06:20:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:18,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:18,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031810054] [2024-11-09 06:20:18,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031810054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:18,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:18,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 06:20:18,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391992653] [2024-11-09 06:20:18,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:18,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:20:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:18,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:20:18,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:20:18,992 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:19,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:19,044 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2024-11-09 06:20:19,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:20:19,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 06:20:19,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:19,045 INFO L225 Difference]: With dead ends: 19 [2024-11-09 06:20:19,045 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 06:20:19,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:20:19,047 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:19,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:20:19,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 06:20:19,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 06:20:19,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-11-09 06:20:19,054 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 4 [2024-11-09 06:20:19,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:19,058 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-11-09 06:20:19,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:19,058 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-11-09 06:20:19,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 06:20:19,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:19,060 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 06:20:19,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:20:19,061 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 06:20:19,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:19,061 INFO L85 PathProgramCache]: Analyzing trace with hash -55623509, now seen corresponding path program 1 times [2024-11-09 06:20:19,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:19,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635014142] [2024-11-09 06:20:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:19,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:19,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:19,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635014142] [2024-11-09 06:20:19,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635014142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:19,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39849213] [2024-11-09 06:20:19,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:19,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:19,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:20:19,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:20:19,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:20:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:19,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:20:19,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:19,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 06:20:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:19,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:20:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:19,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39849213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:20:19,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [585105257] [2024-11-09 06:20:19,735 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2024-11-09 06:20:19,737 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:20:19,744 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:20:19,750 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:20:19,750 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:20:20,243 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:20:21,713 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '145#(exists ((|v_ULTIMATE.start_main_~#a~0#1.base_23| Int) (|v_ULTIMATE.start_main_~n~0#1_27| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet1#1|)) (<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)) (<= 2 |v_ULTIMATE.start_main_~#a~0#1.base_23|) (<= |ULTIMATE.start_main_#t~nondet1#1| 2147483647) (<= (select |#length| |v_ULTIMATE.start_main_~#a~0#1.base_23|) (+ 3 (* |v_ULTIMATE.start_main_~n~0#1_27| 4))) (<= 0 |v_ULTIMATE.start_main_~n~0#1_27|)))' at error location [2024-11-09 06:20:21,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:20:21,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:20:21,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-09 06:20:21,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489941968] [2024-11-09 06:20:21,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:20:21,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:20:21,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:21,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:20:21,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2024-11-09 06:20:21,716 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:21,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:21,844 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-11-09 06:20:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:20:21,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 06:20:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:21,846 INFO L225 Difference]: With dead ends: 25 [2024-11-09 06:20:21,846 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 06:20:21,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=161, Unknown=1, NotChecked=0, Total=210 [2024-11-09 06:20:21,847 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:21,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:20:21,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 06:20:21,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 06:20:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-09 06:20:21,851 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 7 [2024-11-09 06:20:21,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:21,852 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-09 06:20:21,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:21,852 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-09 06:20:21,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 06:20:21,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:21,853 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:21,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:20:22,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:22,057 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 06:20:22,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:22,058 INFO L85 PathProgramCache]: Analyzing trace with hash 138833446, now seen corresponding path program 1 times [2024-11-09 06:20:22,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:22,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532732588] [2024-11-09 06:20:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:22,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 06:20:22,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:22,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532732588] [2024-11-09 06:20:22,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532732588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:22,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:22,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:20:22,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243547095] [2024-11-09 06:20:22,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:22,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:20:22,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:22,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:20:22,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:20:22,372 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:22,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:22,431 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2024-11-09 06:20:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:20:22,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-09 06:20:22,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:22,432 INFO L225 Difference]: With dead ends: 29 [2024-11-09 06:20:22,432 INFO L226 Difference]: Without dead ends: 29 [2024-11-09 06:20:22,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:20:22,434 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:22,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 16 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:20:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-09 06:20:22,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2024-11-09 06:20:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2024-11-09 06:20:22,441 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 18 [2024-11-09 06:20:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:22,441 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2024-11-09 06:20:22,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:22,442 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2024-11-09 06:20:22,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 06:20:22,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:22,443 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:22,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:20:22,444 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 06:20:22,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:22,444 INFO L85 PathProgramCache]: Analyzing trace with hash 8875616, now seen corresponding path program 1 times [2024-11-09 06:20:22,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:22,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486719446] [2024-11-09 06:20:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:22,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 06:20:22,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:22,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486719446] [2024-11-09 06:20:22,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486719446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:22,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:22,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:20:22,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207036043] [2024-11-09 06:20:22,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:22,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:20:22,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:22,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:20:22,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:20:22,500 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:22,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:22,522 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-11-09 06:20:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:20:22,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 06:20:22,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:22,525 INFO L225 Difference]: With dead ends: 25 [2024-11-09 06:20:22,526 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 06:20:22,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:20:22,527 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:22,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:20:22,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 06:20:22,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 06:20:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-09 06:20:22,533 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 19 [2024-11-09 06:20:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:22,536 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-09 06:20:22,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-09 06:20:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 06:20:22,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:22,538 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:22,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:20:22,538 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 06:20:22,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:22,540 INFO L85 PathProgramCache]: Analyzing trace with hash 275142345, now seen corresponding path program 1 times [2024-11-09 06:20:22,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:22,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626713648] [2024-11-09 06:20:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:22,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:22,673 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:22,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:22,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626713648] [2024-11-09 06:20:22,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626713648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:22,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661474500] [2024-11-09 06:20:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:22,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:22,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:20:22,678 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:20:22,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:20:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:22,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:20:22,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:22,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:20:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:22,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661474500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:20:22,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1782186139] [2024-11-09 06:20:22,882 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 06:20:22,882 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:20:22,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:20:22,883 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:20:22,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:20:23,122 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:20:23,406 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '443#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_old_#valid#1_10| (Array Int Int))) (not (= |v_ULTIMATE.start_main_old_#valid#1_10| |#valid|))) (exists ((|v_ULTIMATE.start_main_~#a~0#1.base_24| Int) (|v_#valid_27| (Array Int Int))) (and (<= 2 |v_ULTIMATE.start_main_~#a~0#1.base_24|) (= (store |v_#valid_27| |v_ULTIMATE.start_main_~#a~0#1.base_24| 0) |#valid|))) (<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)) (or (< |ULTIMATE.start_main_~i~0#1| 0) (< 9 |ULTIMATE.start_main_~i~0#1|)) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2024-11-09 06:20:23,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:20:23,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:20:23,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 06:20:23,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212950025] [2024-11-09 06:20:23,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:20:23,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:20:23,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:23,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:20:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:20:23,409 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:23,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:23,488 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2024-11-09 06:20:23,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:20:23,489 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 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 20 [2024-11-09 06:20:23,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:23,490 INFO L225 Difference]: With dead ends: 43 [2024-11-09 06:20:23,490 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 06:20:23,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:20:23,491 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:23,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:20:23,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 06:20:23,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-09 06:20:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2024-11-09 06:20:23,496 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 20 [2024-11-09 06:20:23,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:23,496 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2024-11-09 06:20:23,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:23,497 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2024-11-09 06:20:23,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 06:20:23,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:23,498 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:23,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:20:23,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:23,702 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 06:20:23,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:23,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1392854345, now seen corresponding path program 2 times [2024-11-09 06:20:23,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:23,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782256034] [2024-11-09 06:20:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:23,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 06:20:23,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:23,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782256034] [2024-11-09 06:20:23,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782256034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:23,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:23,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:20:23,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658825905] [2024-11-09 06:20:23,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:23,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:20:23,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:23,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:20:23,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:20:23,924 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-11-09 06:20:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:23,940 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2024-11-09 06:20:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:20:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) Word has length 38 [2024-11-09 06:20:23,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:23,942 INFO L225 Difference]: With dead ends: 42 [2024-11-09 06:20:23,942 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 06:20:23,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:20:23,943 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:23,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:20:23,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 06:20:23,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-09 06:20:23,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:20:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-11-09 06:20:23,947 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 38 [2024-11-09 06:20:23,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:23,948 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-11-09 06:20:23,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-11-09 06:20:23,948 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-11-09 06:20:23,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 06:20:23,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:23,949 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:23,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:20:23,949 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 06:20:23,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:23,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1392688830, now seen corresponding path program 1 times [2024-11-09 06:20:23,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:23,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670349149] [2024-11-09 06:20:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:23,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:20:23,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:20:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:20:24,024 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 06:20:24,025 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:20:24,026 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2024-11-09 06:20:24,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-09 06:20:24,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-09 06:20:24,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-09 06:20:24,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-09 06:20:24,032 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-09 06:20:24,032 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-09 06:20:24,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 06:20:24,037 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:24,073 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 06:20:24,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:20:24 BoogieIcfgContainer [2024-11-09 06:20:24,076 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 06:20:24,077 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 06:20:24,077 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 06:20:24,077 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 06:20:24,078 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:20:18" (3/4) ... [2024-11-09 06:20:24,080 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 06:20:24,131 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 06:20:24,131 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 06:20:24,132 INFO L158 Benchmark]: Toolchain (without parser) took 6563.42ms. Allocated memory was 127.9MB in the beginning and 167.8MB in the end (delta: 39.8MB). Free memory was 93.5MB in the beginning and 95.1MB in the end (delta: -1.7MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2024-11-09 06:20:24,132 INFO L158 Benchmark]: CDTParser took 1.16ms. Allocated memory is still 127.9MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:20:24,132 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.61ms. Allocated memory is still 127.9MB. Free memory was 93.1MB in the beginning and 81.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 06:20:24,132 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.37ms. Allocated memory is still 127.9MB. Free memory was 81.2MB in the beginning and 80.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:20:24,133 INFO L158 Benchmark]: Boogie Preprocessor took 34.06ms. Allocated memory is still 127.9MB. Free memory was 80.0MB in the beginning and 78.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:20:24,133 INFO L158 Benchmark]: RCFGBuilder took 343.81ms. Allocated memory is still 127.9MB. Free memory was 78.8MB in the beginning and 66.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 06:20:24,133 INFO L158 Benchmark]: TraceAbstraction took 5859.02ms. Allocated memory was 127.9MB in the beginning and 167.8MB in the end (delta: 39.8MB). Free memory was 65.7MB in the beginning and 97.2MB in the end (delta: -31.6MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2024-11-09 06:20:24,134 INFO L158 Benchmark]: Witness Printer took 54.24ms. Allocated memory is still 167.8MB. Free memory was 97.2MB in the beginning and 95.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:20:24,135 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16ms. Allocated memory is still 127.9MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.61ms. Allocated memory is still 127.9MB. Free memory was 93.1MB in the beginning and 81.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.37ms. Allocated memory is still 127.9MB. Free memory was 81.2MB in the beginning and 80.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.06ms. Allocated memory is still 127.9MB. Free memory was 80.0MB in the beginning and 78.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 343.81ms. Allocated memory is still 127.9MB. Free memory was 78.8MB in the beginning and 66.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5859.02ms. Allocated memory was 127.9MB in the beginning and 167.8MB in the end (delta: 39.8MB). Free memory was 65.7MB in the beginning and 97.2MB in the end (delta: -31.6MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Witness Printer took 54.24ms. Allocated memory is still 167.8MB. Free memory was 97.2MB in the beginning and 95.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L10] int i = __VERIFIER_nondet_int(); [L11] int a[10]; [L13] int n = 0; VAL [a={2:0}, i=0, n=0] [L13] COND FALSE !(n < 10) VAL [a={2:0}, i=0, n=0] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=1] [L13] COND FALSE !(n < 10) VAL [a={2:0}, i=0, n=1] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=2] [L13] COND FALSE !(n < 10) VAL [a={2:0}, i=0, n=2] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=3] [L13] COND FALSE !(n < 10) VAL [a={2:0}, i=0, n=3] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=4] [L13] COND FALSE !(n < 10) VAL [a={2:0}, i=0, n=4] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=5] [L13] COND FALSE !(n < 10) VAL [a={2:0}, i=0, n=5] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=6] [L13] COND FALSE !(n < 10) VAL [a={2:0}, i=0, n=6] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=7] [L13] COND FALSE !(n < 10) VAL [a={2:0}, i=0, n=7] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=8] [L13] COND FALSE !(n < 10) VAL [a={2:0}, i=0, n=8] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=9] [L13] COND FALSE !(n < 10) VAL [a={2:0}, i=0, n=9] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=10] [L13] COND TRUE n < 10 VAL [a={2:0}, i=0] [L17] 0 <= i && i < 10 && a[i] >= 0 VAL [a={2:0}, i=0] [L17] EXPR a[i] [L17] 0 <= i && i < 10 && a[i] >= 0 VAL [a={2:0}] [L17] COND TRUE 0 <= i && i < 10 && a[i] >= 0 [L18] i = __VERIFIER_nondet_int() [L20] a[i] = 0 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 186 IncrementalHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 78 mSDtfsCounter, 186 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, InterpolantAutomatonStates: 37, 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, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 854 SizeOfPredicates, 0 NumberOfNonLiveVariables, 130 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 189/264 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-09 06:20:24,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e166f5-3e34-4632-921d-1f6f488352a6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)