./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrncpy-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrncpy-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E --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 32bit --witnessprinter.graph.data.programhash 57855fd15a600148bf8b2d693e60ae0827a95c157ed69e07e1c42c75fda7c9c4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:29:25,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:29:25,329 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 05:29:25,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:29:25,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:29:25,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:29:25,386 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:29:25,386 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:29:25,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:29:25,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:29:25,388 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:29:25,388 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:29:25,389 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:29:25,389 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:29:25,389 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:29:25,389 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:29:25,389 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:29:25,389 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:29:25,389 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:29:25,390 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:29:25,390 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:29:25,390 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:29:25,390 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 05:29:25,390 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 05:29:25,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:29:25,391 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:29:25,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:29:25,391 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:29:25,391 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:29:25,391 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 05:29:25,391 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 05:29:25,391 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 05:29:25,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:29:25,391 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:29:25,392 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:29:25,393 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:29:25,393 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:29:25,393 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:29:25,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:29:25,394 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:29:25,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:29:25,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:29:25,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:29:25,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:29:25,395 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:29:25,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:29:25,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:29:25,395 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:29:25,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:29:25,396 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57855fd15a600148bf8b2d693e60ae0827a95c157ed69e07e1c42c75fda7c9c4 [2024-11-14 05:29:25,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:29:25,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:29:25,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:29:25,747 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:29:25,747 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:29:25,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/array-memsafety/openbsd_cstrncpy-alloca-2.i Unable to find full path for "g++" [2024-11-14 05:29:27,804 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:29:28,159 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:29:28,160 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/sv-benchmarks/c/array-memsafety/openbsd_cstrncpy-alloca-2.i [2024-11-14 05:29:28,175 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/data/bb23df437/791d527d8127418db96af8979559bede/FLAGa0ebca920 [2024-11-14 05:29:28,196 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/data/bb23df437/791d527d8127418db96af8979559bede [2024-11-14 05:29:28,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:29:28,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:29:28,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:29:28,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:29:28,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:29:28,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17afa4ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28, skipping insertion in model container [2024-11-14 05:29:28,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,253 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:29:28,590 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 05:29:28,591 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 05:29:28,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:29:28,607 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:29:28,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:29:28,685 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:29:28,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28 WrapperNode [2024-11-14 05:29:28,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:29:28,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:29:28,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:29:28,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:29:28,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,727 INFO L138 Inliner]: procedures = 117, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-11-14 05:29:28,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:29:28,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:29:28,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:29:28,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:29:28,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,739 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,752 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:29:28,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:29:28,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:29:28,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:29:28,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28" (1/1) ... [2024-11-14 05:29:28,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:29:28,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:29:28,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:29:28,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:29:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:29:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:29:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:29:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:29:28,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:29:28,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:29:29,024 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:29:29,027 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:29:29,354 INFO L? ?]: Removed 49 outVars from TransFormulas that were not future-live. [2024-11-14 05:29:29,354 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:29:29,441 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:29:29,441 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 05:29:29,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:29:29 BoogieIcfgContainer [2024-11-14 05:29:29,442 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:29:29,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:29:29,445 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:29:29,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:29:29,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:29:28" (1/3) ... [2024-11-14 05:29:29,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250a4977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:29:29, skipping insertion in model container [2024-11-14 05:29:29,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:29:28" (2/3) ... [2024-11-14 05:29:29,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250a4977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:29:29, skipping insertion in model container [2024-11-14 05:29:29,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:29:29" (3/3) ... [2024-11-14 05:29:29,454 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncpy-alloca-2.i [2024-11-14 05:29:29,473 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:29:29,475 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG openbsd_cstrncpy-alloca-2.i that has 1 procedures, 28 locations, 1 initial locations, 3 loop locations, and 11 error locations. [2024-11-14 05:29:29,522 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:29:29,540 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;@6258ede9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:29:29,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-14 05:29:29,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 2.125) internal successors, (34), 27 states have internal predecessors, (34), 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) [2024-11-14 05:29:29,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 05:29:29,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:29,554 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 05:29:29,555 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:29,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:29,561 INFO L85 PathProgramCache]: Analyzing trace with hash 126110, now seen corresponding path program 1 times [2024-11-14 05:29:29,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:29,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214593734] [2024-11-14 05:29:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:29,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:29,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:29,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214593734] [2024-11-14 05:29:29,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214593734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:29,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:29,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 05:29:29,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396162727] [2024-11-14 05:29:29,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:29,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:29:29,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:30,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:29:30,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:29:30,065 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 2.125) internal successors, (34), 27 states have internal predecessors, (34), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-11-14 05:29:30,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:30,157 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-14 05:29:30,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:29:30,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2024-11-14 05:29:30,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:30,168 INFO L225 Difference]: With dead ends: 26 [2024-11-14 05:29:30,168 INFO L226 Difference]: Without dead ends: 25 [2024-11-14 05:29:30,171 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 [2024-11-14 05:29:30,177 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:30,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 36 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:29:30,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-14 05:29:30,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-14 05:29:30,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 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) [2024-11-14 05:29:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-14 05:29:30,219 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 3 [2024-11-14 05:29:30,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:30,221 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-14 05:29:30,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-11-14 05:29:30,222 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-14 05:29:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 05:29:30,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:30,223 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 05:29:30,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:29:30,224 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:30,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:30,225 INFO L85 PathProgramCache]: Analyzing trace with hash 126111, now seen corresponding path program 1 times [2024-11-14 05:29:30,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:30,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46958308] [2024-11-14 05:29:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:30,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:30,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:30,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46958308] [2024-11-14 05:29:30,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46958308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:30,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:30,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:29:30,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229699346] [2024-11-14 05:29:30,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:30,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:29:30,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:30,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:29:30,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:29:30,671 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-14 05:29:30,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:30,747 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-14 05:29:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:29:30,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-11-14 05:29:30,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:30,749 INFO L225 Difference]: With dead ends: 24 [2024-11-14 05:29:30,749 INFO L226 Difference]: Without dead ends: 24 [2024-11-14 05:29:30,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:29:30,751 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:30,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:29:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-14 05:29:30,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-14 05:29:30,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.75) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:30,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-14 05:29:30,755 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 3 [2024-11-14 05:29:30,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:30,756 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-14 05:29:30,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-14 05:29:30,756 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-14 05:29:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 05:29:30,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:30,757 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 05:29:30,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:29:30,757 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:30,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:30,758 INFO L85 PathProgramCache]: Analyzing trace with hash 123747, now seen corresponding path program 1 times [2024-11-14 05:29:30,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:30,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223974465] [2024-11-14 05:29:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:30,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:31,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:31,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223974465] [2024-11-14 05:29:31,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223974465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:31,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:31,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:29:31,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702223902] [2024-11-14 05:29:31,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:31,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:29:31,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:31,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:29:31,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:29:31,091 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-14 05:29:31,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:31,235 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2024-11-14 05:29:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:29:31,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-11-14 05:29:31,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:31,237 INFO L225 Difference]: With dead ends: 26 [2024-11-14 05:29:31,237 INFO L226 Difference]: Without dead ends: 26 [2024-11-14 05:29:31,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:29:31,238 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:31,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:29:31,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-14 05:29:31,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-14 05:29:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 25 states have internal predecessors, (31), 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) [2024-11-14 05:29:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-14 05:29:31,248 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 3 [2024-11-14 05:29:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:31,248 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-14 05:29:31,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-14 05:29:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-14 05:29:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 05:29:31,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:31,249 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2024-11-14 05:29:31,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:29:31,250 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:31,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:31,251 INFO L85 PathProgramCache]: Analyzing trace with hash 118981188, now seen corresponding path program 1 times [2024-11-14 05:29:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:31,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903147163] [2024-11-14 05:29:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:31,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:31,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903147163] [2024-11-14 05:29:31,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903147163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:29:31,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698099453] [2024-11-14 05:29:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:31,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:31,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:29:31,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:29:31,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:29:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:31,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 05:29:31,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:29:32,130 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 7 [2024-11-14 05:29:32,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:29:32,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-14 05:29:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:32,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:29:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:32,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698099453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:29:32,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [740713305] [2024-11-14 05:29:32,650 INFO L159 IcfgInterpreter]: Started Sifa with 4 locations of interest [2024-11-14 05:29:32,650 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:29:32,655 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:29:32,661 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:29:32,663 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:29:33,663 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:29:33,983 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '230#(and (<= 0 (+ 128 |ULTIMATE.start_main_#t~nondet12#1|)) (exists ((|v_ULTIMATE.start_main_~nondetString~0#1.offset_27| Int) (|v_ULTIMATE.start_main_~i~0#1_36| Int) (|v_ULTIMATE.start_main_~nondetString~0#1.base_29| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 |v_ULTIMATE.start_main_~i~0#1_36|) (<= 2 |ULTIMATE.start_main_~nondetArea~0#1.base|) (= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_#t~malloc10#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc11#1.base|) (<= (select |#length| |v_ULTIMATE.start_main_~nondetString~0#1.base_29|) |v_ULTIMATE.start_main_~i~0#1_36|) (<= 2 |v_ULTIMATE.start_main_~nondetString~0#1.base_29|) (= |v_ULTIMATE.start_main_~nondetString~0#1.offset_27| 0) (<= (+ |v_ULTIMATE.start_main_~i~0#1_36| 2) |ULTIMATE.start_main_~length~0#1|))) (<= |ULTIMATE.start_main_#t~nondet12#1| 127))' at error location [2024-11-14 05:29:33,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:29:33,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:29:33,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-14 05:29:33,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129970558] [2024-11-14 05:29:33,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:29:33,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:29:33,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:33,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:29:33,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:29:33,987 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:34,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:34,270 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-11-14 05:29:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:29:34,271 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 05:29:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:34,271 INFO L225 Difference]: With dead ends: 26 [2024-11-14 05:29:34,271 INFO L226 Difference]: Without dead ends: 26 [2024-11-14 05:29:34,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-14 05:29:34,273 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:34,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 126 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:29:34,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-14 05:29:34,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2024-11-14 05:29:34,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.6875) internal successors, (27), 22 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) [2024-11-14 05:29:34,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-14 05:29:34,279 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 5 [2024-11-14 05:29:34,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:34,279 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-14 05:29:34,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:34,281 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-14 05:29:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 05:29:34,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:34,282 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 05:29:34,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:29:34,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:34,486 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:34,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash -536228753, now seen corresponding path program 1 times [2024-11-14 05:29:34,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:34,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070752912] [2024-11-14 05:29:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:34,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:34,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:34,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070752912] [2024-11-14 05:29:34,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070752912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:34,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:34,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:29:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439537831] [2024-11-14 05:29:34,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:34,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:29:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:34,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:29:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:29:34,620 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:34,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:34,694 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2024-11-14 05:29:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:29:34,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 05:29:34,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:34,695 INFO L225 Difference]: With dead ends: 23 [2024-11-14 05:29:34,695 INFO L226 Difference]: Without dead ends: 23 [2024-11-14 05:29:34,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:29:34,697 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:34,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 36 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:29:34,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-14 05:29:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-11-14 05:29:34,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.625) internal successors, (26), 21 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) [2024-11-14 05:29:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-14 05:29:34,702 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 6 [2024-11-14 05:29:34,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:34,702 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-14 05:29:34,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:34,706 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-14 05:29:34,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 05:29:34,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:34,706 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 05:29:34,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 05:29:34,706 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:34,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash -536228752, now seen corresponding path program 1 times [2024-11-14 05:29:34,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:34,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498183274] [2024-11-14 05:29:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:34,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:34,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:34,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498183274] [2024-11-14 05:29:34,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498183274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:34,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:34,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:29:34,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012350080] [2024-11-14 05:29:34,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:34,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:29:34,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:34,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:29:34,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:29:34,855 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:34,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:34,937 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-11-14 05:29:34,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:29:34,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 05:29:34,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:34,939 INFO L225 Difference]: With dead ends: 25 [2024-11-14 05:29:34,939 INFO L226 Difference]: Without dead ends: 25 [2024-11-14 05:29:34,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:29:34,940 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:34,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 70 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:29:34,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-14 05:29:34,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-14 05:29:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:34,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-14 05:29:34,947 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 6 [2024-11-14 05:29:34,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:34,947 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-14 05:29:34,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:34,947 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-14 05:29:34,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 05:29:34,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:34,949 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 05:29:34,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 05:29:34,950 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:34,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:34,951 INFO L85 PathProgramCache]: Analyzing trace with hash -536187792, now seen corresponding path program 1 times [2024-11-14 05:29:34,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:34,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707541495] [2024-11-14 05:29:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:34,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:35,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:35,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707541495] [2024-11-14 05:29:35,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707541495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:35,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:35,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:29:35,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734150096] [2024-11-14 05:29:35,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:35,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:29:35,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:35,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:29:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:29:35,112 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:35,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:35,139 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-11-14 05:29:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:29:35,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 05:29:35,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:35,140 INFO L225 Difference]: With dead ends: 29 [2024-11-14 05:29:35,140 INFO L226 Difference]: Without dead ends: 29 [2024-11-14 05:29:35,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:29:35,140 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:35,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 50 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:29:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-14 05:29:35,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2024-11-14 05:29:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 23 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) [2024-11-14 05:29:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-14 05:29:35,143 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 6 [2024-11-14 05:29:35,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:35,143 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-14 05:29:35,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-14 05:29:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:29:35,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:35,144 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:35,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 05:29:35,144 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:35,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:35,145 INFO L85 PathProgramCache]: Analyzing trace with hash 556777858, now seen corresponding path program 1 times [2024-11-14 05:29:35,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:35,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153727746] [2024-11-14 05:29:35,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:35,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:35,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:35,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153727746] [2024-11-14 05:29:35,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153727746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:35,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:35,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:29:35,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624653432] [2024-11-14 05:29:35,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:35,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:29:35,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:35,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:29:35,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:29:35,447 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:35,560 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-11-14 05:29:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:29:35,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 05:29:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:35,561 INFO L225 Difference]: With dead ends: 25 [2024-11-14 05:29:35,561 INFO L226 Difference]: Without dead ends: 25 [2024-11-14 05:29:35,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:29:35,562 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:35,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 41 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:29:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-14 05:29:35,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-14 05:29:35,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 24 states have internal predecessors, (29), 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) [2024-11-14 05:29:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-14 05:29:35,567 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 7 [2024-11-14 05:29:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:35,568 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-14 05:29:35,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-14 05:29:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:29:35,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:35,568 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:35,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 05:29:35,569 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:35,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash 556777857, now seen corresponding path program 1 times [2024-11-14 05:29:35,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:35,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428109182] [2024-11-14 05:29:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:35,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:35,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428109182] [2024-11-14 05:29:35,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428109182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:35,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:35,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:29:35,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108553203] [2024-11-14 05:29:35,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:35,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:29:35,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:35,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:29:35,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:29:35,746 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:35,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:35,839 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-11-14 05:29:35,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:29:35,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 05:29:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:35,840 INFO L225 Difference]: With dead ends: 24 [2024-11-14 05:29:35,840 INFO L226 Difference]: Without dead ends: 24 [2024-11-14 05:29:35,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:29:35,841 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:35,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 29 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:29:35,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-14 05:29:35,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-14 05:29:35,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 23 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) [2024-11-14 05:29:35,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-14 05:29:35,846 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 7 [2024-11-14 05:29:35,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:35,846 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-14 05:29:35,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:35,847 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-14 05:29:35,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:29:35,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:35,847 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:35,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 05:29:35,848 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:35,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1735719322, now seen corresponding path program 1 times [2024-11-14 05:29:35,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:35,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689901934] [2024-11-14 05:29:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:35,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:35,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:35,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689901934] [2024-11-14 05:29:35,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689901934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:35,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:35,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:29:35,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988118039] [2024-11-14 05:29:35,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:35,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:29:35,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:35,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:29:35,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:29:35,934 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2024-11-14 05:29:36,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:36,016 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-11-14 05:29:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:29:36,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 11 [2024-11-14 05:29:36,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:36,018 INFO L225 Difference]: With dead ends: 23 [2024-11-14 05:29:36,018 INFO L226 Difference]: Without dead ends: 23 [2024-11-14 05:29:36,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:29:36,019 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:36,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:29:36,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-14 05:29:36,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-14 05:29:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.368421052631579) internal successors, (26), 22 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) [2024-11-14 05:29:36,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-14 05:29:36,022 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 11 [2024-11-14 05:29:36,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:36,022 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-14 05:29:36,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2024-11-14 05:29:36,022 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-14 05:29:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:29:36,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:36,023 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:36,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 05:29:36,023 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:36,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:36,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1735719321, now seen corresponding path program 1 times [2024-11-14 05:29:36,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:36,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739951203] [2024-11-14 05:29:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:36,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:36,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:36,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739951203] [2024-11-14 05:29:36,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739951203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:36,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:36,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 05:29:36,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908424687] [2024-11-14 05:29:36,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:36,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:29:36,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:29:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:29:36,671 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:36,962 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-14 05:29:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:29:36,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-14 05:29:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:36,963 INFO L225 Difference]: With dead ends: 27 [2024-11-14 05:29:36,963 INFO L226 Difference]: Without dead ends: 27 [2024-11-14 05:29:36,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:29:36,964 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:36,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 46 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:29:36,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-14 05:29:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-14 05:29:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.391304347826087) internal successors, (32), 26 states have internal predecessors, (32), 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) [2024-11-14 05:29:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-14 05:29:36,968 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 11 [2024-11-14 05:29:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:36,968 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-14 05:29:36,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-14 05:29:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:29:36,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:36,969 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:36,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 05:29:36,970 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:36,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:36,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1735196152, now seen corresponding path program 1 times [2024-11-14 05:29:36,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:36,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844922768] [2024-11-14 05:29:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:36,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:37,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844922768] [2024-11-14 05:29:37,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844922768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:37,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:37,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 05:29:37,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044194947] [2024-11-14 05:29:37,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:37,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:29:37,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:29:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:29:37,283 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2024-11-14 05:29:37,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:37,374 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2024-11-14 05:29:37,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:29:37,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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 11 [2024-11-14 05:29:37,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:37,375 INFO L225 Difference]: With dead ends: 35 [2024-11-14 05:29:37,375 INFO L226 Difference]: Without dead ends: 35 [2024-11-14 05:29:37,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:29:37,376 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:37,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:29:37,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-14 05:29:37,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-14 05:29:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 33 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) [2024-11-14 05:29:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-14 05:29:37,379 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 11 [2024-11-14 05:29:37,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:37,379 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-14 05:29:37,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2024-11-14 05:29:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-14 05:29:37,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 05:29:37,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:37,380 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:37,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-14 05:29:37,381 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:37,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:37,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1578999855, now seen corresponding path program 1 times [2024-11-14 05:29:37,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:37,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250503998] [2024-11-14 05:29:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:37,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:37,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:37,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250503998] [2024-11-14 05:29:37,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250503998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:37,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:37,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:29:37,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771802938] [2024-11-14 05:29:37,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:37,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:29:37,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:29:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:29:37,681 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:37,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:37,720 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-14 05:29:37,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:29:37,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-14 05:29:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:37,722 INFO L225 Difference]: With dead ends: 33 [2024-11-14 05:29:37,722 INFO L226 Difference]: Without dead ends: 30 [2024-11-14 05:29:37,723 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 [2024-11-14 05:29:37,724 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:37,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 28 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:29:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-14 05:29:37,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-14 05:29:37,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 29 states have internal predecessors, (34), 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) [2024-11-14 05:29:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-14 05:29:37,730 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 13 [2024-11-14 05:29:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:37,731 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-14 05:29:37,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:29:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-14 05:29:37,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 05:29:37,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:37,731 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:37,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 05:29:37,735 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:37,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:37,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1196437481, now seen corresponding path program 1 times [2024-11-14 05:29:37,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:37,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433695271] [2024-11-14 05:29:37,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:37,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:38,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:38,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433695271] [2024-11-14 05:29:38,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433695271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:29:38,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188066721] [2024-11-14 05:29:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:38,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:38,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:29:38,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:29:38,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:29:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:38,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:29:38,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:29:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:38,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:29:38,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-14 05:29:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:38,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188066721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:29:38,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1467375271] [2024-11-14 05:29:38,577 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:29:38,577 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:29:38,577 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:29:38,577 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:29:38,577 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:29:40,540 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:29:42,104 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '927#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)) (exists ((|v_ULTIMATE.start_cstrncpy_#t~pre7#1_16| Int)) (not (= (mod |v_ULTIMATE.start_cstrncpy_#t~pre7#1_16| 4294967296) 0))))' at error location [2024-11-14 05:29:42,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:29:42,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:29:42,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-14 05:29:42,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57296755] [2024-11-14 05:29:42,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:29:42,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 05:29:42,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:42,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 05:29:42,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2024-11-14 05:29:42,106 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 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) [2024-11-14 05:29:42,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:42,372 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-14 05:29:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:29:42,373 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 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) Word has length 13 [2024-11-14 05:29:42,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:42,374 INFO L225 Difference]: With dead ends: 41 [2024-11-14 05:29:42,374 INFO L226 Difference]: Without dead ends: 41 [2024-11-14 05:29:42,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2024-11-14 05:29:42,376 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:42,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 92 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:29:42,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-14 05:29:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2024-11-14 05:29:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 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) [2024-11-14 05:29:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-14 05:29:42,385 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 13 [2024-11-14 05:29:42,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:42,385 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-14 05:29:42,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 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) [2024-11-14 05:29:42,386 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-14 05:29:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 05:29:42,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:42,386 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:42,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 05:29:42,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-14 05:29:42,587 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:42,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:42,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1703020171, now seen corresponding path program 1 times [2024-11-14 05:29:42,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:42,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377265105] [2024-11-14 05:29:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:42,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:43,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:43,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377265105] [2024-11-14 05:29:43,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377265105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:29:43,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416273639] [2024-11-14 05:29:43,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:43,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:43,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:29:43,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:29:43,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:29:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:43,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-14 05:29:43,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:29:43,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:29:43,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-14 05:29:43,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-14 05:29:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:44,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:29:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:29:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416273639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:29:44,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [821793345] [2024-11-14 05:29:44,744 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-14 05:29:44,744 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:29:44,744 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:29:44,744 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:29:44,744 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:29:46,013 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:29:50,011 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1120#(exists ((|v_ULTIMATE.start_cstrncpy_#t~post6#1.offset_19| Int) (|v_ULTIMATE.start_cstrncpy_#t~post6#1.base_20| Int)) (and (<= 2 |ULTIMATE.start_cstrncpy_~s~0#1.base|) (<= 1 |#StackHeapBarrier|) (<= 1 |v_ULTIMATE.start_cstrncpy_#t~post6#1.offset_19|) (<= 2 |ULTIMATE.start_main_#t~malloc10#1.base|) (= |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (<= 2 |ULTIMATE.start_cstrncpy_~d~0#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc11#1.base|) (<= 2 |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= (select |#length| |v_ULTIMATE.start_cstrncpy_#t~post6#1.base_20|) |v_ULTIMATE.start_cstrncpy_#t~post6#1.offset_19|) (<= 2 |v_ULTIMATE.start_cstrncpy_#t~post6#1.base_20|) (<= 2 |ULTIMATE.start_cstrncpy_~dst#1.base|)))' at error location [2024-11-14 05:29:50,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:29:50,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:29:50,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2024-11-14 05:29:50,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703264302] [2024-11-14 05:29:50,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:29:50,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-14 05:29:50,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:50,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-14 05:29:50,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1542, Unknown=1, NotChecked=0, Total=1722 [2024-11-14 05:29:50,019 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 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) [2024-11-14 05:29:52,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:29:53,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:53,105 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-11-14 05:29:53,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 05:29:53,106 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 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) Word has length 14 [2024-11-14 05:29:53,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:53,106 INFO L225 Difference]: With dead ends: 39 [2024-11-14 05:29:53,106 INFO L226 Difference]: Without dead ends: 24 [2024-11-14 05:29:53,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=304, Invalid=2451, Unknown=1, NotChecked=0, Total=2756 [2024-11-14 05:29:53,108 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:53,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 51 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 309 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2024-11-14 05:29:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-14 05:29:53,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-14 05:29:53,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 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) [2024-11-14 05:29:53,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-14 05:29:53,112 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2024-11-14 05:29:53,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:53,112 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-14 05:29:53,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 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) [2024-11-14 05:29:53,112 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-14 05:29:53,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 05:29:53,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:53,112 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:53,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 05:29:53,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-14 05:29:53,315 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:53,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:53,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1565143767, now seen corresponding path program 1 times [2024-11-14 05:29:53,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:53,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657882121] [2024-11-14 05:29:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:53,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:29:53,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:53,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657882121] [2024-11-14 05:29:53,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657882121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:29:53,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792881243] [2024-11-14 05:29:53,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:53,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:53,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:29:53,932 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:29:53,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:29:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:54,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 05:29:54,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:29:54,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:29:54,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-14 05:29:54,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-14 05:29:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:29:54,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:29:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:29:54,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792881243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:29:54,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [627166262] [2024-11-14 05:29:54,832 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:29:54,832 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:29:54,832 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:29:54,832 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:29:54,832 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:29:55,966 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:29:56,942 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1320#(and (= (select (select |#memory_int| |ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ (- 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)) |ULTIMATE.start_cstrncpy_#t~mem4#1|) (= (select |#valid| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) (<= |ULTIMATE.start_cstrncpy_~s~0#1.offset| (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|)) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (or (< (select |#length| |ULTIMATE.start_cstrncpy_~d~0#1.base|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (< |ULTIMATE.start_cstrncpy_~d~0#1.offset| 1)))' at error location [2024-11-14 05:29:56,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:29:56,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:29:56,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-14 05:29:56,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065320237] [2024-11-14 05:29:56,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:29:56,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 05:29:56,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:56,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 05:29:56,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1087, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:29:56,945 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) [2024-11-14 05:29:57,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:57,527 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-14 05:29:57,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:29:57,527 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-14 05:29:57,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:57,528 INFO L225 Difference]: With dead ends: 25 [2024-11-14 05:29:57,528 INFO L226 Difference]: Without dead ends: 25 [2024-11-14 05:29:57,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=145, Invalid=1415, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:29:57,530 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:57,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 40 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:29:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-14 05:29:57,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-14 05:29:57,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 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) [2024-11-14 05:29:57,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-11-14 05:29:57,533 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 14 [2024-11-14 05:29:57,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:57,533 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-11-14 05:29:57,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) [2024-11-14 05:29:57,533 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-11-14 05:29:57,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:29:57,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:57,534 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:57,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:29:57,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 05:29:57,734 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:29:57,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:57,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1958418802, now seen corresponding path program 1 times [2024-11-14 05:29:57,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:57,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478569874] [2024-11-14 05:29:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:57,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:29:58,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:58,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478569874] [2024-11-14 05:29:58,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478569874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:29:58,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901199836] [2024-11-14 05:29:58,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:58,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:58,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:29:58,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:29:58,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:29:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:58,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-14 05:29:58,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:29:58,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:29:58,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-14 05:29:58,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:29:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:29:59,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:29:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:29:59,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901199836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:29:59,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1600192752] [2024-11-14 05:29:59,629 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-14 05:29:59,630 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:29:59,630 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:29:59,630 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:29:59,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:01,078 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:30:03,782 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1522#(and (not (= (mod |ULTIMATE.start_cstrncpy_~n#1| 4294967296) 0)) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~d~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (or (exists ((|v_#memory_int_66| (Array Int (Array Int Int))) (|v_ULTIMATE.start_cstrncpy_#t~post2#1.base_45| Int) (|v_ULTIMATE.start_cstrncpy_#t~post2#1.offset_47| Int)) (and (= (select (select |v_#memory_int_66| |ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ (- 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0) (= (select |#valid| |v_ULTIMATE.start_cstrncpy_#t~post2#1.base_45|) 1) (<= 0 |v_ULTIMATE.start_cstrncpy_#t~post2#1.offset_47|) (<= (+ |v_ULTIMATE.start_cstrncpy_#t~post2#1.offset_47| 1) (select |#length| |v_ULTIMATE.start_cstrncpy_#t~post2#1.base_45|)) (= |#memory_int| (store |v_#memory_int_66| |v_ULTIMATE.start_cstrncpy_#t~post2#1.base_45| (store (select |v_#memory_int_66| |v_ULTIMATE.start_cstrncpy_#t~post2#1.base_45|) |v_ULTIMATE.start_cstrncpy_#t~post2#1.offset_47| 0))) (= (select |#valid| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) (= (+ 2 |v_ULTIMATE.start_cstrncpy_#t~post2#1.offset_47|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= |ULTIMATE.start_cstrncpy_~s~0#1.offset| (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|)) (= |v_ULTIMATE.start_cstrncpy_#t~post2#1.base_45| |ULTIMATE.start_cstrncpy_~d~0#1.base|))) (and (= (select |#valid| |ULTIMATE.start_cstrncpy_~dst#1.base|) 1) (= (+ |ULTIMATE.start_cstrncpy_~dst#1.offset| 2) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (exists ((|v_ULTIMATE.start_main_~length~0#1_59| Int) (|v_ULTIMATE.start_main_~i~0#1_52| Int) (|v_#memory_int_61| (Array Int (Array Int Int)))) (and (<= 2 |ULTIMATE.start_cstrncpy_~s~0#1.base|) (<= 1 |#StackHeapBarrier|) (= |#memory_int| (store (store |v_#memory_int_61| |ULTIMATE.start_cstrncpy_~s~0#1.base| (store (select |v_#memory_int_61| |ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ (- 1) |v_ULTIMATE.start_main_~length~0#1_59|) 0)) |ULTIMATE.start_cstrncpy_~dst#1.base| (store (select (store |v_#memory_int_61| |ULTIMATE.start_cstrncpy_~s~0#1.base| (store (select |v_#memory_int_61| |ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ (- 1) |v_ULTIMATE.start_main_~length~0#1_59|) 0)) |ULTIMATE.start_cstrncpy_~dst#1.base|) 0 0))) (<= 1 |v_ULTIMATE.start_main_~length~0#1_59|) (<= 2 |ULTIMATE.start_main_#t~malloc10#1.base|) (= (select (store (select |v_#memory_int_61| |ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ (- 1) |v_ULTIMATE.start_main_~length~0#1_59|) 0) 0) 0) (= |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (<= |v_ULTIMATE.start_main_~length~0#1_59| (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|)) (<= 2 |ULTIMATE.start_main_#t~malloc11#1.base|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 2 |ULTIMATE.start_cstrncpy_~dst#1.base|) (<= |v_ULTIMATE.start_main_~length~0#1_59| (+ |v_ULTIMATE.start_main_~i~0#1_52| 1)))) (= (select |#valid| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) (<= (+ |ULTIMATE.start_cstrncpy_~dst#1.offset| 1) (select |#length| |ULTIMATE.start_cstrncpy_~dst#1.base|)) (= |ULTIMATE.start_cstrncpy_~dst#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (not (= (mod (+ |ULTIMATE.start_cstrncpy_~n#1| 1) 4294967296) 0)))))' at error location [2024-11-14 05:30:03,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:30:03,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:30:03,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2024-11-14 05:30:03,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127976026] [2024-11-14 05:30:03,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:30:03,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-14 05:30:03,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:30:03,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-14 05:30:03,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2024-11-14 05:30:03,786 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 31 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 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) [2024-11-14 05:30:06,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:30:08,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:30:08,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:08,542 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-14 05:30:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 05:30:08,543 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 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 [2024-11-14 05:30:08,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:08,543 INFO L225 Difference]: With dead ends: 28 [2024-11-14 05:30:08,543 INFO L226 Difference]: Without dead ends: 22 [2024-11-14 05:30:08,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=233, Invalid=2419, Unknown=0, NotChecked=0, Total=2652 [2024-11-14 05:30:08,545 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:08,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 40 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 229 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2024-11-14 05:30:08,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-14 05:30:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-11-14 05:30:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 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) [2024-11-14 05:30:08,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-14 05:30:08,547 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2024-11-14 05:30:08,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:08,547 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-14 05:30:08,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 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) [2024-11-14 05:30:08,548 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-14 05:30:08,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:30:08,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:08,548 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:30:08,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 05:30:08,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-14 05:30:08,752 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:30:08,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:08,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1957895633, now seen corresponding path program 2 times [2024-11-14 05:30:08,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:08,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587999163] [2024-11-14 05:30:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:08,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:09,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:09,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587999163] [2024-11-14 05:30:09,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587999163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:09,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410938393] [2024-11-14 05:30:09,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:30:09,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:09,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:09,618 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:09,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:30:09,741 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:30:09,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:30:09,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-14 05:30:09,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:30:09,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:30:09,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:30:10,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:30:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:10,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:30:10,102 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_212 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_212) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:30:10,108 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_212 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~dst#1.base| v_ArrVal_212) |c_ULTIMATE.start_cstrncpy_~src#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~src#1.offset| 1)) 0)) is different from false [2024-11-14 05:30:10,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:10,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:30:10,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:10,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:30:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-14 05:30:10,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410938393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:30:10,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1906671815] [2024-11-14 05:30:10,252 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:30:10,252 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:30:10,252 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:30:10,252 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:30:10,252 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:11,221 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:30:12,139 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1727#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:30:12,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:30:12,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:30:12,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2024-11-14 05:30:12,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99279630] [2024-11-14 05:30:12,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:30:12,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 05:30:12,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:30:12,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 05:30:12,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=8, NotChecked=118, Total=1056 [2024-11-14 05:30:12,141 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 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) [2024-11-14 05:30:12,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:12,610 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-11-14 05:30:12,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 05:30:12,611 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 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 [2024-11-14 05:30:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:12,611 INFO L225 Difference]: With dead ends: 35 [2024-11-14 05:30:12,611 INFO L226 Difference]: Without dead ends: 24 [2024-11-14 05:30:12,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=125, Invalid=1281, Unknown=8, NotChecked=146, Total=1560 [2024-11-14 05:30:12,613 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:12,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 69 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 223 Invalid, 0 Unknown, 43 Unchecked, 0.2s Time] [2024-11-14 05:30:12,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-14 05:30:12,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2024-11-14 05:30:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 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) [2024-11-14 05:30:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-11-14 05:30:12,616 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18 [2024-11-14 05:30:12,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:12,616 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-11-14 05:30:12,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 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) [2024-11-14 05:30:12,617 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-11-14 05:30:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 05:30:12,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:12,618 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 05:30:12,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 05:30:12,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 05:30:12,819 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:30:12,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash 532383022, now seen corresponding path program 3 times [2024-11-14 05:30:12,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:12,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931669805] [2024-11-14 05:30:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:12,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:13,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:13,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931669805] [2024-11-14 05:30:13,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931669805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:13,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174584044] [2024-11-14 05:30:13,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:30:13,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:13,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:13,196 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:13,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:30:13,312 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:30:13,312 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:30:13,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-14 05:30:13,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:30:13,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-14 05:30:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:13,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:30:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:13,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174584044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:30:13,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1707744030] [2024-11-14 05:30:13,928 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:30:13,928 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:30:13,928 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:30:13,928 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:30:13,928 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:14,757 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:30:15,586 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1946#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:30:15,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:30:15,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:30:15,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2024-11-14 05:30:15,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048914343] [2024-11-14 05:30:15,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:30:15,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 05:30:15,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:30:15,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 05:30:15,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:30:15,588 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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) [2024-11-14 05:30:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:15,982 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2024-11-14 05:30:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 05:30:15,983 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 [2024-11-14 05:30:15,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:15,983 INFO L225 Difference]: With dead ends: 27 [2024-11-14 05:30:15,983 INFO L226 Difference]: Without dead ends: 27 [2024-11-14 05:30:15,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=140, Invalid=1420, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:30:15,985 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:15,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 68 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:30:15,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-14 05:30:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-14 05:30:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:30:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-14 05:30:15,987 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 20 [2024-11-14 05:30:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:15,987 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-14 05:30:15,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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) [2024-11-14 05:30:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-14 05:30:15,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:30:15,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:15,988 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 05:30:16,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 05:30:16,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:16,189 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:30:16,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:16,189 INFO L85 PathProgramCache]: Analyzing trace with hash -675995516, now seen corresponding path program 2 times [2024-11-14 05:30:16,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:16,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201268530] [2024-11-14 05:30:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:16,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:30:16,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:16,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201268530] [2024-11-14 05:30:16,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201268530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:16,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934930996] [2024-11-14 05:30:16,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:30:16,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:16,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:16,936 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:16,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 05:30:17,192 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:30:17,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:30:17,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-14 05:30:17,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:30:17,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:30:17,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-14 05:30:17,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-14 05:30:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:30:17,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:30:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:30:18,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934930996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:30:18,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [906566695] [2024-11-14 05:30:18,403 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:30:18,404 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:30:18,404 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:30:18,404 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:30:18,404 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:19,431 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:30:20,772 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2174#(and (= (select (select |#memory_int| |ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ (- 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)) |ULTIMATE.start_cstrncpy_#t~mem4#1|) (= (select |#valid| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) (<= |ULTIMATE.start_cstrncpy_~s~0#1.offset| (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|)) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (or (< (select |#length| |ULTIMATE.start_cstrncpy_~d~0#1.base|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (< |ULTIMATE.start_cstrncpy_~d~0#1.offset| 1)))' at error location [2024-11-14 05:30:20,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:30:20,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:30:20,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 30 [2024-11-14 05:30:20,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823739844] [2024-11-14 05:30:20,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:30:20,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-14 05:30:20,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:30:20,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-14 05:30:20,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1508, Unknown=0, NotChecked=0, Total=1640 [2024-11-14 05:30:20,774 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 32 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 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) [2024-11-14 05:30:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:21,732 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2024-11-14 05:30:21,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 05:30:21,732 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 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 21 [2024-11-14 05:30:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:21,733 INFO L225 Difference]: With dead ends: 27 [2024-11-14 05:30:21,733 INFO L226 Difference]: Without dead ends: 27 [2024-11-14 05:30:21,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=270, Invalid=2592, Unknown=0, NotChecked=0, Total=2862 [2024-11-14 05:30:21,734 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 23 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:21,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 15 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:30:21,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-14 05:30:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-14 05:30:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 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) [2024-11-14 05:30:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2024-11-14 05:30:21,737 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 21 [2024-11-14 05:30:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:21,737 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2024-11-14 05:30:21,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 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) [2024-11-14 05:30:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2024-11-14 05:30:21,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:30:21,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:21,738 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 05:30:21,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 05:30:21,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:21,939 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:30:21,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:21,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1083371510, now seen corresponding path program 4 times [2024-11-14 05:30:21,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:21,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983477959] [2024-11-14 05:30:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:21,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:22,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:22,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983477959] [2024-11-14 05:30:22,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983477959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:22,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423143829] [2024-11-14 05:30:22,710 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:30:22,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:22,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:22,712 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:22,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 05:30:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:22,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-14 05:30:22,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:30:22,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:30:23,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:30:23,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:30:23,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:30:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:23,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:30:23,546 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_310 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~dst#1.base| v_ArrVal_310) |c_ULTIMATE.start_cstrncpy_~src#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~src#1.offset|)) 0)) is different from false [2024-11-14 05:30:23,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:23,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:30:23,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:23,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:30:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:23,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423143829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:30:23,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [430458071] [2024-11-14 05:30:23,670 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:30:23,670 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:30:23,670 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:30:23,671 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:30:23,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:24,458 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:30:25,172 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2438#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:30:25,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:30:25,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:30:25,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 31 [2024-11-14 05:30:25,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224945523] [2024-11-14 05:30:25,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:30:25,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-14 05:30:25,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:30:25,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-14 05:30:25,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1406, Unknown=51, NotChecked=76, Total=1640 [2024-11-14 05:30:25,174 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 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) [2024-11-14 05:30:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:25,786 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2024-11-14 05:30:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 05:30:25,787 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 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 25 [2024-11-14 05:30:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:25,787 INFO L225 Difference]: With dead ends: 45 [2024-11-14 05:30:25,788 INFO L226 Difference]: Without dead ends: 29 [2024-11-14 05:30:25,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=156, Invalid=2052, Unknown=52, NotChecked=92, Total=2352 [2024-11-14 05:30:25,789 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:25,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 96 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 402 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2024-11-14 05:30:25,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-14 05:30:25,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-14 05:30:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 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) [2024-11-14 05:30:25,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-11-14 05:30:25,792 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 25 [2024-11-14 05:30:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:25,792 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-11-14 05:30:25,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 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) [2024-11-14 05:30:25,793 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-11-14 05:30:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 05:30:25,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:25,793 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-14 05:30:25,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 05:30:25,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:25,997 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:30:25,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:25,998 INFO L85 PathProgramCache]: Analyzing trace with hash -353378261, now seen corresponding path program 5 times [2024-11-14 05:30:25,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:25,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104702324] [2024-11-14 05:30:25,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:25,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:26,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:26,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104702324] [2024-11-14 05:30:26,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104702324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:26,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898624107] [2024-11-14 05:30:26,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:30:26,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:26,410 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:26,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 05:30:26,557 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:30:26,557 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:30:26,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-14 05:30:26,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:30:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:26,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:30:27,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-14 05:30:27,103 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:27,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898624107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:30:27,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2141562503] [2024-11-14 05:30:27,105 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:30:27,105 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:30:27,105 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:30:27,105 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:30:27,105 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:27,894 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:30:28,462 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2718#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:30:28,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:30:28,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:30:28,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-11-14 05:30:28,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258539969] [2024-11-14 05:30:28,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:30:28,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 05:30:28,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:30:28,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 05:30:28,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:30:28,464 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 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) [2024-11-14 05:30:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:28,815 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2024-11-14 05:30:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 05:30:28,815 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 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 27 [2024-11-14 05:30:28,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:28,816 INFO L225 Difference]: With dead ends: 33 [2024-11-14 05:30:28,816 INFO L226 Difference]: Without dead ends: 33 [2024-11-14 05:30:28,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 05:30:28,820 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:28,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 92 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:30:28,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-14 05:30:28,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-14 05:30:28,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 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) [2024-11-14 05:30:28,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-14 05:30:28,825 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 27 [2024-11-14 05:30:28,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:28,825 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-14 05:30:28,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 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) [2024-11-14 05:30:28,825 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-14 05:30:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 05:30:28,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:28,830 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2024-11-14 05:30:28,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-14 05:30:29,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-14 05:30:29,033 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:30:29,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:29,034 INFO L85 PathProgramCache]: Analyzing trace with hash 412814125, now seen corresponding path program 6 times [2024-11-14 05:30:29,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:29,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008077952] [2024-11-14 05:30:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:29,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:29,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:29,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008077952] [2024-11-14 05:30:29,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008077952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:29,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250989708] [2024-11-14 05:30:29,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:30:29,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:29,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:29,975 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:29,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 05:30:30,155 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:30:30,156 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:30:30,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-14 05:30:30,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:30:30,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:30:30,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:30:30,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:30:30,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:30:30,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:30:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:30,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:30:30,533 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_391 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_391) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|) 0)) is different from false [2024-11-14 05:30:30,545 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_391 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_391) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:30:30,793 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_391 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_391) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:30:30,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:30,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:30:30,886 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:30,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:30:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2024-11-14 05:30:31,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250989708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:30:31,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [266841296] [2024-11-14 05:30:31,011 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:30:31,011 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:30:31,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:30:31,011 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:30:31,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:31,956 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:30:32,653 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3022#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:30:32,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:30:32,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:30:32,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 34 [2024-11-14 05:30:32,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317262905] [2024-11-14 05:30:32,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:30:32,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:30:32,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:30:32,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:30:32,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1478, Unknown=45, NotChecked=240, Total=1892 [2024-11-14 05:30:32,655 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 34 states have internal predecessors, (64), 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) [2024-11-14 05:30:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:33,173 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2024-11-14 05:30:33,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 05:30:33,173 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 34 states have internal predecessors, (64), 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 32 [2024-11-14 05:30:33,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:33,174 INFO L225 Difference]: With dead ends: 57 [2024-11-14 05:30:33,174 INFO L226 Difference]: Without dead ends: 36 [2024-11-14 05:30:33,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=159, Invalid=1878, Unknown=45, NotChecked=270, Total=2352 [2024-11-14 05:30:33,175 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:33,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 119 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 412 Invalid, 0 Unknown, 106 Unchecked, 0.3s Time] [2024-11-14 05:30:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-14 05:30:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2024-11-14 05:30:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 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) [2024-11-14 05:30:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2024-11-14 05:30:33,177 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2024-11-14 05:30:33,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:33,178 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2024-11-14 05:30:33,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 34 states have internal predecessors, (64), 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) [2024-11-14 05:30:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2024-11-14 05:30:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 05:30:33,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:33,179 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-14 05:30:33,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 05:30:33,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:33,380 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:30:33,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:33,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1353382932, now seen corresponding path program 7 times [2024-11-14 05:30:33,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:33,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118186601] [2024-11-14 05:30:33,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:33,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:33,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:33,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118186601] [2024-11-14 05:30:33,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118186601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:33,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913380471] [2024-11-14 05:30:33,929 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:30:33,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:33,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:33,933 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:33,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 05:30:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:34,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-14 05:30:34,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:30:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:34,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:30:34,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-14 05:30:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:34,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913380471] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:30:34,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [729437787] [2024-11-14 05:30:34,852 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:30:34,852 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:30:34,852 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:30:34,853 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:30:34,853 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:35,822 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:30:36,439 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3363#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:30:36,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:30:36,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:30:36,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-14 05:30:36,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291848595] [2024-11-14 05:30:36,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:30:36,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-14 05:30:36,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:30:36,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-14 05:30:36,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 05:30:36,441 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 29 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:30:36,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:36,855 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-11-14 05:30:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 05:30:36,856 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-14 05:30:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:36,856 INFO L225 Difference]: With dead ends: 40 [2024-11-14 05:30:36,856 INFO L226 Difference]: Without dead ends: 40 [2024-11-14 05:30:36,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=156, Invalid=1650, Unknown=0, NotChecked=0, Total=1806 [2024-11-14 05:30:36,857 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:36,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 133 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:30:36,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-14 05:30:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-14 05:30:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 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) [2024-11-14 05:30:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-11-14 05:30:36,860 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 34 [2024-11-14 05:30:36,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:36,860 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-11-14 05:30:36,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:30:36,861 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-11-14 05:30:36,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 05:30:36,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:36,861 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2024-11-14 05:30:36,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 05:30:37,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:37,065 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:30:37,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:37,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1313544204, now seen corresponding path program 8 times [2024-11-14 05:30:37,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:37,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304986489] [2024-11-14 05:30:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:37,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 14 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:38,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:38,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304986489] [2024-11-14 05:30:38,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304986489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:38,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427058664] [2024-11-14 05:30:38,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:30:38,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:38,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:38,194 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:38,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 05:30:38,500 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-14 05:30:38,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:30:38,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-14 05:30:38,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:30:38,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:30:38,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 05:30:38,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:30:39,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:30:39,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:30:39,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:30:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 14 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:39,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:30:39,703 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_489 (Array Int Int)) (v_ArrVal_488 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_488) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_489) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:30:39,894 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_489 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_489) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:30:41,923 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_486 (Array Int Int)) (v_ArrVal_489 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_486) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_489) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:30:41,936 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_489 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_489) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:30:41,941 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_489 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~dst#1.base| v_ArrVal_489) |c_ULTIMATE.start_cstrncpy_~src#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~src#1.offset| 4)) 0)) is different from false [2024-11-14 05:30:41,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:41,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:30:41,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:41,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:30:41,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 05:30:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 28 not checked. [2024-11-14 05:30:42,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427058664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:30:42,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2128130235] [2024-11-14 05:30:42,279 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:30:42,280 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:30:42,280 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:30:42,280 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:30:42,280 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:42,911 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:30:43,870 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3748#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:30:43,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:30:43,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:30:43,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20, 20] total 58 [2024-11-14 05:30:43,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172318931] [2024-11-14 05:30:43,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:30:43,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-14 05:30:43,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:30:43,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-14 05:30:43,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3759, Unknown=63, NotChecked=640, Total=4692 [2024-11-14 05:30:43,875 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 58 states have internal predecessors, (103), 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) [2024-11-14 05:30:44,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:44,982 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2024-11-14 05:30:44,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-14 05:30:44,982 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 58 states have internal predecessors, (103), 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 39 [2024-11-14 05:30:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:44,983 INFO L225 Difference]: With dead ends: 69 [2024-11-14 05:30:44,983 INFO L226 Difference]: Without dead ends: 43 [2024-11-14 05:30:44,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=280, Invalid=4647, Unknown=63, NotChecked=710, Total=5700 [2024-11-14 05:30:44,985 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:44,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 217 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 809 Invalid, 0 Unknown, 212 Unchecked, 0.6s Time] [2024-11-14 05:30:44,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-14 05:30:44,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-11-14 05:30:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 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) [2024-11-14 05:30:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-11-14 05:30:44,988 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 39 [2024-11-14 05:30:44,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:44,988 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-11-14 05:30:44,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 58 states have internal predecessors, (103), 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) [2024-11-14 05:30:44,988 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-11-14 05:30:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 05:30:44,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:44,989 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2024-11-14 05:30:45,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-14 05:30:45,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:45,193 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:30:45,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:45,193 INFO L85 PathProgramCache]: Analyzing trace with hash 166369901, now seen corresponding path program 9 times [2024-11-14 05:30:45,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:45,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905234783] [2024-11-14 05:30:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:45,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:45,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:45,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905234783] [2024-11-14 05:30:45,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905234783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:45,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679546868] [2024-11-14 05:30:45,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:30:45,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:45,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:45,890 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:45,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 05:30:46,129 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:30:46,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:30:46,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-14 05:30:46,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:30:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:46,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:30:46,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-14 05:30:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:47,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679546868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:30:47,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [847541988] [2024-11-14 05:30:47,062 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:30:47,062 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:30:47,062 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:30:47,062 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:30:47,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:47,892 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:30:48,655 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4167#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:30:48,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:30:48,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:30:48,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 37 [2024-11-14 05:30:48,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694723989] [2024-11-14 05:30:48,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:30:48,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-14 05:30:48,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:30:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-14 05:30:48,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2087, Unknown=0, NotChecked=0, Total=2256 [2024-11-14 05:30:48,657 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 39 states, 38 states have (on average 2.5789473684210527) internal successors, (98), 38 states have internal predecessors, (98), 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) [2024-11-14 05:30:49,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:49,560 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2024-11-14 05:30:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 05:30:49,561 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.5789473684210527) internal successors, (98), 38 states have internal predecessors, (98), 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 41 [2024-11-14 05:30:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:49,562 INFO L225 Difference]: With dead ends: 47 [2024-11-14 05:30:49,562 INFO L226 Difference]: Without dead ends: 47 [2024-11-14 05:30:49,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=291, Invalid=3249, Unknown=0, NotChecked=0, Total=3540 [2024-11-14 05:30:49,563 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:49,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 225 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:30:49,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-14 05:30:49,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-14 05:30:49,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 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) [2024-11-14 05:30:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-11-14 05:30:49,566 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 41 [2024-11-14 05:30:49,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:49,566 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-11-14 05:30:49,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.5789473684210527) internal successors, (98), 38 states have internal predecessors, (98), 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) [2024-11-14 05:30:49,567 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-11-14 05:30:49,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 05:30:49,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:49,567 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2024-11-14 05:30:49,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-14 05:30:49,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:49,768 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:30:49,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:49,768 INFO L85 PathProgramCache]: Analyzing trace with hash 467954219, now seen corresponding path program 10 times [2024-11-14 05:30:49,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:49,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786328499] [2024-11-14 05:30:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:49,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 17 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:51,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:51,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786328499] [2024-11-14 05:30:51,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786328499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:51,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390911907] [2024-11-14 05:30:51,367 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:30:51,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:51,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:51,368 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:51,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 05:30:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:51,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-14 05:30:51,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:30:51,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:30:51,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:30:51,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:30:52,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:30:52,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:30:52,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:30:52,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:30:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 17 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:52,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:30:52,549 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_604 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_604) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:30:52,559 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_602 (Array Int Int)) (v_ArrVal_604 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_602) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_604) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:30:52,567 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_604 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_604) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:30:52,679 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_604 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_604) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)))) is different from false [2024-11-14 05:30:52,730 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_600 (Array Int Int)) (v_ArrVal_604 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_600) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_604) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:30:52,740 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_604 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_604) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:30:52,745 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_604 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~dst#1.base| v_ArrVal_604) |c_ULTIMATE.start_cstrncpy_~src#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~src#1.offset|)) 0)) is different from false [2024-11-14 05:30:52,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:52,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:30:52,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:52,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:30:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 17 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 53 not checked. [2024-11-14 05:30:52,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390911907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:30:52,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1864929395] [2024-11-14 05:30:52,927 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:30:52,927 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:30:52,927 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:30:52,927 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:30:52,927 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:53,520 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:30:54,489 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4620#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:30:54,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:30:54,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:30:54,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23, 23] total 55 [2024-11-14 05:30:54,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566052827] [2024-11-14 05:30:54,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:30:54,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-14 05:30:54,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:30:54,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-14 05:30:54,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3191, Unknown=74, NotChecked=840, Total=4290 [2024-11-14 05:30:54,492 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 56 states, 56 states have (on average 1.8214285714285714) internal successors, (102), 55 states have internal predecessors, (102), 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) [2024-11-14 05:30:58,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:58,315 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2024-11-14 05:30:58,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-14 05:30:58,316 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.8214285714285714) internal successors, (102), 55 states have internal predecessors, (102), 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 46 [2024-11-14 05:30:58,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:58,317 INFO L225 Difference]: With dead ends: 81 [2024-11-14 05:30:58,317 INFO L226 Difference]: Without dead ends: 50 [2024-11-14 05:30:58,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 100 SyntacticMatches, 5 SemanticMatches, 81 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=282, Invalid=5368, Unknown=78, NotChecked=1078, Total=6806 [2024-11-14 05:30:58,319 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 343 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:58,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 361 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1186 Invalid, 0 Unknown, 343 Unchecked, 0.8s Time] [2024-11-14 05:30:58,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-14 05:30:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2024-11-14 05:30:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 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) [2024-11-14 05:30:58,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2024-11-14 05:30:58,321 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46 [2024-11-14 05:30:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:58,321 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2024-11-14 05:30:58,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.8214285714285714) internal successors, (102), 55 states have internal predecessors, (102), 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) [2024-11-14 05:30:58,322 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2024-11-14 05:30:58,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-14 05:30:58,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:58,322 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2024-11-14 05:30:58,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 05:30:58,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-14 05:30:58,523 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:30:58,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:58,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1803507542, now seen corresponding path program 11 times [2024-11-14 05:30:58,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:58,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767515518] [2024-11-14 05:30:58,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:58,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 16 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:59,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:59,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767515518] [2024-11-14 05:30:59,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767515518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:59,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809837203] [2024-11-14 05:30:59,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:30:59,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:59,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:59,329 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:59,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 05:30:59,724 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-14 05:30:59,724 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:30:59,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-14 05:30:59,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:31:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 25 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:00,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:31:00,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-14 05:31:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 25 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:00,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809837203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:31:00,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1877195855] [2024-11-14 05:31:00,883 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:31:00,884 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:31:00,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:31:00,884 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:31:00,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:31:01,656 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:31:02,437 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5125#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:31:02,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:31:02,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:31:02,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 42 [2024-11-14 05:31:02,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272021334] [2024-11-14 05:31:02,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:31:02,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-14 05:31:02,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:31:02,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-14 05:31:02,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2613, Unknown=0, NotChecked=0, Total=2862 [2024-11-14 05:31:02,439 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 44 states, 43 states have (on average 2.6511627906976742) internal successors, (114), 43 states have internal predecessors, (114), 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) [2024-11-14 05:31:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:31:03,155 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2024-11-14 05:31:03,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-14 05:31:03,156 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.6511627906976742) internal successors, (114), 43 states have internal predecessors, (114), 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 48 [2024-11-14 05:31:03,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:31:03,156 INFO L225 Difference]: With dead ends: 54 [2024-11-14 05:31:03,156 INFO L226 Difference]: Without dead ends: 54 [2024-11-14 05:31:03,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=322, Invalid=3460, Unknown=0, NotChecked=0, Total=3782 [2024-11-14 05:31:03,157 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:31:03,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 232 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:31:03,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-14 05:31:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-14 05:31:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 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) [2024-11-14 05:31:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-11-14 05:31:03,163 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 48 [2024-11-14 05:31:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:31:03,163 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-11-14 05:31:03,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.6511627906976742) internal successors, (114), 43 states have internal predecessors, (114), 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) [2024-11-14 05:31:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-11-14 05:31:03,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 05:31:03,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:31:03,164 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2024-11-14 05:31:03,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-14 05:31:03,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-14 05:31:03,364 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:31:03,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:31:03,365 INFO L85 PathProgramCache]: Analyzing trace with hash 184465934, now seen corresponding path program 12 times [2024-11-14 05:31:03,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:31:03,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438674782] [2024-11-14 05:31:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:31:03,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:31:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:31:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 20 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:05,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:31:05,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438674782] [2024-11-14 05:31:05,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438674782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:31:05,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082852571] [2024-11-14 05:31:05,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:31:05,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:05,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:31:05,204 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:31:05,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 05:31:05,489 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:31:05,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:31:05,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 161 conjuncts are in the unsatisfiable core [2024-11-14 05:31:05,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:31:05,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:31:06,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 05:31:06,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:06,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:06,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:06,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:06,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:07,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:07,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 05:31:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 20 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:07,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:31:07,260 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_736 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_736) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|) 0)) is different from false [2024-11-14 05:31:07,268 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_736 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_736) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:31:07,399 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_736 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_736) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:07,410 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_734 (Array Int Int)) (v_ArrVal_736 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_734) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_736) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:07,419 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_736 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_736) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:07,548 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_736 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_736) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:31:07,559 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_732 (Array Int Int)) (v_ArrVal_736 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_732) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_736) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:31:07,568 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_736 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_736) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:07,707 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_736 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_736) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:07,715 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_736 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~dst#1.base| v_ArrVal_736) |c_ULTIMATE.start_cstrncpy_~src#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~src#1.offset|)) 0)) is different from false [2024-11-14 05:31:07,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:31:07,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:31:07,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:31:07,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:31:07,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 05:31:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 20 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 86 not checked. [2024-11-14 05:31:08,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082852571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:31:08,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1380859442] [2024-11-14 05:31:08,288 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:31:08,288 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:31:08,289 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:31:08,289 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:31:08,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:31:09,240 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:31:10,308 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5650#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:31:10,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:31:10,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:31:10,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26, 26] total 78 [2024-11-14 05:31:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13281569] [2024-11-14 05:31:10,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:31:10,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-14 05:31:10,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:31:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-14 05:31:10,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=5698, Unknown=89, NotChecked=1610, Total=7656 [2024-11-14 05:31:10,311 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 79 states, 79 states have (on average 1.8354430379746836) internal successors, (145), 78 states have internal predecessors, (145), 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) [2024-11-14 05:31:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:31:12,692 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2024-11-14 05:31:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-14 05:31:12,692 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.8354430379746836) internal successors, (145), 78 states have internal predecessors, (145), 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 53 [2024-11-14 05:31:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:31:12,693 INFO L225 Difference]: With dead ends: 93 [2024-11-14 05:31:12,693 INFO L226 Difference]: Without dead ends: 57 [2024-11-14 05:31:12,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 103 SyntacticMatches, 10 SemanticMatches, 97 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 2401 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=334, Invalid=7449, Unknown=89, NotChecked=1830, Total=9702 [2024-11-14 05:31:12,694 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 559 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:31:12,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 576 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1923 Invalid, 0 Unknown, 559 Unchecked, 1.2s Time] [2024-11-14 05:31:12,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-14 05:31:12,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2024-11-14 05:31:12,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 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) [2024-11-14 05:31:12,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-11-14 05:31:12,697 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 53 [2024-11-14 05:31:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:31:12,697 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-11-14 05:31:12,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.8354430379746836) internal successors, (145), 78 states have internal predecessors, (145), 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) [2024-11-14 05:31:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-11-14 05:31:12,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 05:31:12,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:31:12,698 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2024-11-14 05:31:12,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 05:31:12,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-14 05:31:12,899 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:31:12,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:31:12,899 INFO L85 PathProgramCache]: Analyzing trace with hash -59375953, now seen corresponding path program 13 times [2024-11-14 05:31:12,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:31:12,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731024922] [2024-11-14 05:31:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:31:12,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:31:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:31:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 25 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:13,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:31:13,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731024922] [2024-11-14 05:31:13,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731024922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:31:13,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563236145] [2024-11-14 05:31:13,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:31:13,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:13,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:31:13,587 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:31:13,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 05:31:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:31:13,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-14 05:31:13,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:31:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:13,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:31:14,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-14 05:31:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:14,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563236145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:31:14,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [286577557] [2024-11-14 05:31:14,521 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:31:14,521 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:31:14,521 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:31:14,521 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:31:14,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:31:15,363 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:31:16,061 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6198#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:31:16,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:31:16,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:31:16,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 32 [2024-11-14 05:31:16,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161140341] [2024-11-14 05:31:16,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:31:16,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:31:16,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:31:16,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:31:16,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1660, Unknown=0, NotChecked=0, Total=1806 [2024-11-14 05:31:16,063 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 34 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 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) [2024-11-14 05:31:16,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:31:16,835 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-11-14 05:31:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-14 05:31:16,836 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 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 55 [2024-11-14 05:31:16,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:31:16,836 INFO L225 Difference]: With dead ends: 61 [2024-11-14 05:31:16,837 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 05:31:16,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 133 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=201, Invalid=2249, Unknown=0, NotChecked=0, Total=2450 [2024-11-14 05:31:16,838 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:31:16,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 248 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:31:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 05:31:16,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-14 05:31:16,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 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) [2024-11-14 05:31:16,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2024-11-14 05:31:16,842 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 55 [2024-11-14 05:31:16,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:31:16,842 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2024-11-14 05:31:16,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 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) [2024-11-14 05:31:16,842 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2024-11-14 05:31:16,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 05:31:16,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:31:16,843 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2024-11-14 05:31:16,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-14 05:31:17,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:17,044 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:31:17,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:31:17,044 INFO L85 PathProgramCache]: Analyzing trace with hash 494362409, now seen corresponding path program 14 times [2024-11-14 05:31:17,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:31:17,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052541042] [2024-11-14 05:31:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:31:17,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:31:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:31:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 23 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:19,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:31:19,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052541042] [2024-11-14 05:31:19,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052541042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:31:19,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518040568] [2024-11-14 05:31:19,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:31:19,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:19,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:31:19,372 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:31:19,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-14 05:31:20,325 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-14 05:31:20,325 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:31:20,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 177 conjuncts are in the unsatisfiable core [2024-11-14 05:31:20,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:31:20,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:31:20,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 05:31:21,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:21,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:21,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:21,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:21,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:22,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:22,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 23 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:22,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:31:22,718 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_885 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_885) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:22,729 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_883 (Array Int Int)) (v_ArrVal_885 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_883) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_885) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:22,860 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_882 (Array Int Int)) (v_ArrVal_885 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_882) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_885) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:23,627 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_885 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_885) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)))) is different from false [2024-11-14 05:31:23,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:31:23,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:31:23,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:31:23,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:31:23,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 05:31:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 23 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 52 not checked. [2024-11-14 05:31:24,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518040568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:31:24,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1775560315] [2024-11-14 05:31:24,457 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:31:24,457 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:31:24,457 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:31:24,458 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:31:24,458 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:31:25,264 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:31:26,490 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6786#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:31:26,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:31:26,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:31:26,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 29, 29] total 88 [2024-11-14 05:31:26,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230984634] [2024-11-14 05:31:26,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:31:26,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-14 05:31:26,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:31:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-14 05:31:26,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=8232, Unknown=206, NotChecked=748, Total=9506 [2024-11-14 05:31:26,493 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 89 states, 89 states have (on average 1.8651685393258426) internal successors, (166), 88 states have internal predecessors, (166), 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) [2024-11-14 05:31:28,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:31:28,941 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2024-11-14 05:31:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-14 05:31:28,942 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.8651685393258426) internal successors, (166), 88 states have internal predecessors, (166), 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 60 [2024-11-14 05:31:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:31:28,942 INFO L225 Difference]: With dead ends: 105 [2024-11-14 05:31:28,943 INFO L226 Difference]: Without dead ends: 64 [2024-11-14 05:31:28,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3343 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=415, Invalid=10737, Unknown=206, NotChecked=852, Total=12210 [2024-11-14 05:31:28,944 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 2475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 254 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:31:28,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 661 Invalid, 2475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2214 Invalid, 0 Unknown, 254 Unchecked, 1.3s Time] [2024-11-14 05:31:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-14 05:31:28,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-11-14 05:31:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 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) [2024-11-14 05:31:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-11-14 05:31:28,952 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2024-11-14 05:31:28,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:31:28,953 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-11-14 05:31:28,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.8651685393258426) internal successors, (166), 88 states have internal predecessors, (166), 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) [2024-11-14 05:31:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-11-14 05:31:28,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-14 05:31:28,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:31:28,954 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2024-11-14 05:31:28,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-14 05:31:29,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:29,155 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:31:29,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:31:29,155 INFO L85 PathProgramCache]: Analyzing trace with hash 212390760, now seen corresponding path program 15 times [2024-11-14 05:31:29,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:31:29,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089124562] [2024-11-14 05:31:29,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:31:29,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:31:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:31:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 36 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:30,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:31:30,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089124562] [2024-11-14 05:31:30,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089124562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:31:30,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904886766] [2024-11-14 05:31:30,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:31:30,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:30,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:31:30,042 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:31:30,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 05:31:30,636 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:31:30,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:31:30,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-14 05:31:30,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:31:30,645 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 [2024-11-14 05:31:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 49 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:31,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:31:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 49 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:32,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904886766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:31:32,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [473096527] [2024-11-14 05:31:32,380 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:31:32,380 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:31:32,380 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:31:32,380 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:31:32,380 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:31:33,161 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:31:34,083 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7413#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:31:34,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:31:34,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:31:34,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2024-11-14 05:31:34,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308350236] [2024-11-14 05:31:34,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:31:34,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-14 05:31:34,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:31:34,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-14 05:31:34,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=3582, Unknown=0, NotChecked=0, Total=3906 [2024-11-14 05:31:34,085 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 54 states, 53 states have (on average 2.7547169811320753) internal successors, (146), 53 states have internal predecessors, (146), 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) [2024-11-14 05:31:35,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:31:35,160 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2024-11-14 05:31:35,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-14 05:31:35,160 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.7547169811320753) internal successors, (146), 53 states have internal predecessors, (146), 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 62 [2024-11-14 05:31:35,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:31:35,161 INFO L225 Difference]: With dead ends: 68 [2024-11-14 05:31:35,161 INFO L226 Difference]: Without dead ends: 68 [2024-11-14 05:31:35,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=426, Invalid=4830, Unknown=0, NotChecked=0, Total=5256 [2024-11-14 05:31:35,162 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:31:35,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 392 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:31:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-14 05:31:35,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-14 05:31:35,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 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) [2024-11-14 05:31:35,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2024-11-14 05:31:35,167 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 62 [2024-11-14 05:31:35,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:31:35,167 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2024-11-14 05:31:35,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.7547169811320753) internal successors, (146), 53 states have internal predecessors, (146), 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) [2024-11-14 05:31:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2024-11-14 05:31:35,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-14 05:31:35,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:31:35,168 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1] [2024-11-14 05:31:35,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-14 05:31:35,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:35,369 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:31:35,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:31:35,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1536792080, now seen corresponding path program 16 times [2024-11-14 05:31:35,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:31:35,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664967785] [2024-11-14 05:31:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:31:35,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:31:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:31:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 26 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:37,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:31:37,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664967785] [2024-11-14 05:31:37,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664967785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:31:37,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481987566] [2024-11-14 05:31:37,511 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:31:37,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:37,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:31:37,513 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:31:37,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 05:31:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:31:37,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 148 conjuncts are in the unsatisfiable core [2024-11-14 05:31:37,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:31:37,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-14 05:31:37,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:31:38,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:38,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:38,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:38,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:38,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:38,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:38,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:38,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 26 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:38,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:31:38,705 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1053 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1053) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:31:39,294 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1049 (Array Int Int)) (v_ArrVal_1053 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1049) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1053) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:31:39,399 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1048 (Array Int Int)) (v_ArrVal_1053 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1048) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1053) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:39,408 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1053 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1053) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:39,520 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1053 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1053) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:39,545 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1046 (Array Int Int)) (v_ArrVal_1053 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1046) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1053) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:39,553 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1053 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1053) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)))) is different from false [2024-11-14 05:31:39,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:31:39,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:31:39,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:31:39,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:31:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 26 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 107 not checked. [2024-11-14 05:31:39,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481987566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:31:39,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1931913542] [2024-11-14 05:31:39,844 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:31:39,844 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:31:39,844 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:31:39,844 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:31:39,844 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:31:40,597 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:31:41,647 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8042#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:31:41,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:31:41,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:31:41,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 32, 32] total 67 [2024-11-14 05:31:41,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689782760] [2024-11-14 05:31:41,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:31:41,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-14 05:31:41,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:31:41,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-14 05:31:41,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=4457, Unknown=165, NotChecked=994, Total=5852 [2024-11-14 05:31:41,648 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 68 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 67 states have internal predecessors, (135), 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) [2024-11-14 05:31:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:31:44,134 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2024-11-14 05:31:44,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-14 05:31:44,135 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 67 states have internal predecessors, (135), 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 67 [2024-11-14 05:31:44,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:31:44,135 INFO L225 Difference]: With dead ends: 117 [2024-11-14 05:31:44,136 INFO L226 Difference]: Without dead ends: 71 [2024-11-14 05:31:44,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 164 SyntacticMatches, 7 SemanticMatches, 89 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=314, Invalid=6519, Unknown=167, NotChecked=1190, Total=8190 [2024-11-14 05:31:44,136 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 491 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:31:44,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 595 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2025 Invalid, 0 Unknown, 491 Unchecked, 1.3s Time] [2024-11-14 05:31:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-14 05:31:44,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-11-14 05:31:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:31:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2024-11-14 05:31:44,139 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 67 [2024-11-14 05:31:44,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:31:44,139 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2024-11-14 05:31:44,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 67 states have internal predecessors, (135), 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) [2024-11-14 05:31:44,140 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2024-11-14 05:31:44,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 05:31:44,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:31:44,140 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2024-11-14 05:31:44,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-14 05:31:44,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:44,341 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:31:44,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:31:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1140347663, now seen corresponding path program 17 times [2024-11-14 05:31:44,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:31:44,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188140477] [2024-11-14 05:31:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:31:44,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:31:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:31:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 49 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:45,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:31:45,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188140477] [2024-11-14 05:31:45,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188140477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:31:45,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178492646] [2024-11-14 05:31:45,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:31:45,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:45,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:31:45,321 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:31:45,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 05:31:46,168 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-14 05:31:46,168 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:31:46,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-14 05:31:46,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:31:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 64 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:46,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:31:47,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-14 05:31:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 64 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:47,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178492646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:31:47,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1315978045] [2024-11-14 05:31:47,938 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:31:47,938 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:31:47,939 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:31:47,939 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:31:47,939 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:31:48,675 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:31:49,579 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8740#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:31:49,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:31:49,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:31:49,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 57 [2024-11-14 05:31:49,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144640572] [2024-11-14 05:31:49,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:31:49,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-14 05:31:49,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:31:49,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-14 05:31:49,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=4067, Unknown=0, NotChecked=0, Total=4556 [2024-11-14 05:31:49,582 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 59 states, 58 states have (on average 3.206896551724138) internal successors, (186), 58 states have internal predecessors, (186), 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) [2024-11-14 05:31:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:31:50,750 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2024-11-14 05:31:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-14 05:31:50,751 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 3.206896551724138) internal successors, (186), 58 states have internal predecessors, (186), 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 69 [2024-11-14 05:31:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:31:50,751 INFO L225 Difference]: With dead ends: 75 [2024-11-14 05:31:50,752 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 05:31:50,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 152 SyntacticMatches, 10 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2253 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=659, Invalid=5347, Unknown=0, NotChecked=0, Total=6006 [2024-11-14 05:31:50,752 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:31:50,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 426 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:31:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 05:31:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-14 05:31:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 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) [2024-11-14 05:31:50,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2024-11-14 05:31:50,755 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 69 [2024-11-14 05:31:50,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:31:50,755 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2024-11-14 05:31:50,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 3.206896551724138) internal successors, (186), 58 states have internal predecessors, (186), 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) [2024-11-14 05:31:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2024-11-14 05:31:50,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-14 05:31:50,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:31:50,756 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1] [2024-11-14 05:31:50,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-14 05:31:50,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:50,956 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:31:50,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:31:50,957 INFO L85 PathProgramCache]: Analyzing trace with hash -865973721, now seen corresponding path program 18 times [2024-11-14 05:31:50,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:31:50,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233977876] [2024-11-14 05:31:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:31:50,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:31:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:31:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 29 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:53,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:31:53,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233977876] [2024-11-14 05:31:53,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233977876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:31:53,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161840847] [2024-11-14 05:31:53,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:31:53,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:53,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:31:53,270 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:31:53,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 05:31:53,845 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:31:53,845 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:31:53,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 169 conjuncts are in the unsatisfiable core [2024-11-14 05:31:53,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:31:53,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:31:53,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:31:54,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:54,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:54,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:54,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:54,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:54,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:54,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:54,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:31:54,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:31:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 29 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:54,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:31:54,867 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1236 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:31:54,877 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1236 (Array Int Int)) (v_ArrVal_1235 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1235) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:31:54,992 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1236 (Array Int Int)) (v_ArrVal_1234 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1234) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:55,000 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1236 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:55,120 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1236 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:31:55,129 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1236 (Array Int Int)) (v_ArrVal_1232 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1232) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:31:55,138 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1236 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:55,149 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1236 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1231) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:55,264 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1236 (Array Int Int)) (v_ArrVal_1230 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1230) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:57,381 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1229 (Array Int Int)) (v_ArrVal_1236 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1229) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:31:59,527 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1228 (Array Int Int)) (v_ArrVal_1236 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1228) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)) 0)) is different from false [2024-11-14 05:31:59,690 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1236 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~dst#1.base| v_ArrVal_1236) |c_ULTIMATE.start_cstrncpy_~src#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~src#1.offset|)) 0)) is different from false [2024-11-14 05:31:59,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:31:59,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:31:59,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:31:59,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:31:59,926 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 29 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 170 not checked. [2024-11-14 05:31:59,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161840847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:31:59,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [43894243] [2024-11-14 05:31:59,928 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:31:59,928 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:31:59,928 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:31:59,928 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:31:59,928 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:32:00,741 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:32:01,870 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9433#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:32:01,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:32:01,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:32:01,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 35, 35] total 75 [2024-11-14 05:32:01,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094924035] [2024-11-14 05:32:01,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:32:01,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-14 05:32:01,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:32:01,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-14 05:32:01,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=4960, Unknown=94, NotChecked=1836, Total=7140 [2024-11-14 05:32:01,872 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 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) [2024-11-14 05:32:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:32:05,189 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2024-11-14 05:32:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-14 05:32:05,189 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 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 74 [2024-11-14 05:32:05,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:32:05,190 INFO L225 Difference]: With dead ends: 129 [2024-11-14 05:32:05,190 INFO L226 Difference]: Without dead ends: 78 [2024-11-14 05:32:05,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 180 SyntacticMatches, 12 SemanticMatches, 99 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=336, Invalid=7450, Unknown=94, NotChecked=2220, Total=10100 [2024-11-14 05:32:05,191 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 927 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:32:05,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 705 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2427 Invalid, 0 Unknown, 927 Unchecked, 1.6s Time] [2024-11-14 05:32:05,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-14 05:32:05,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-14 05:32:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 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) [2024-11-14 05:32:05,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2024-11-14 05:32:05,193 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2024-11-14 05:32:05,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:32:05,193 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2024-11-14 05:32:05,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 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) [2024-11-14 05:32:05,194 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2024-11-14 05:32:05,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 05:32:05,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:32:05,194 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2024-11-14 05:32:05,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-14 05:32:05,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:32:05,395 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:32:05,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:32:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1526195238, now seen corresponding path program 19 times [2024-11-14 05:32:05,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:32:05,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254967648] [2024-11-14 05:32:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:32:05,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:32:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:32:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 64 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:06,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:32:06,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254967648] [2024-11-14 05:32:06,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254967648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:32:06,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065435956] [2024-11-14 05:32:06,641 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:32:06,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:32:06,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:32:06,643 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:32:06,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-14 05:32:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:32:06,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-14 05:32:06,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:32:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 81 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:07,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:32:07,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-14 05:32:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 81 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:07,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065435956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:32:07,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [986642114] [2024-11-14 05:32:07,917 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:32:07,917 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:32:07,917 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:32:07,917 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:32:07,917 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:32:08,493 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:32:09,260 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10185#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:32:09,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:32:09,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:32:09,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 41 [2024-11-14 05:32:09,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425061690] [2024-11-14 05:32:09,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:32:09,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-14 05:32:09,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:32:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-14 05:32:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2530, Unknown=0, NotChecked=0, Total=2756 [2024-11-14 05:32:09,261 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 43 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 42 states have internal predecessors, (135), 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) [2024-11-14 05:32:10,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:32:10,386 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2024-11-14 05:32:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-14 05:32:10,387 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 42 states have internal predecessors, (135), 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 76 [2024-11-14 05:32:10,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:32:10,388 INFO L225 Difference]: With dead ends: 82 [2024-11-14 05:32:10,388 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 05:32:10,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 189 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=320, Invalid=3586, Unknown=0, NotChecked=0, Total=3906 [2024-11-14 05:32:10,388 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:32:10,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 379 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 05:32:10,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 05:32:10,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-14 05:32:10,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:10,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2024-11-14 05:32:10,391 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 76 [2024-11-14 05:32:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:32:10,392 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2024-11-14 05:32:10,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 42 states have internal predecessors, (135), 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) [2024-11-14 05:32:10,392 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2024-11-14 05:32:10,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 05:32:10,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:32:10,393 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2024-11-14 05:32:10,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-14 05:32:10,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-14 05:32:10,594 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:32:10,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:32:10,594 INFO L85 PathProgramCache]: Analyzing trace with hash 946686994, now seen corresponding path program 20 times [2024-11-14 05:32:10,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:32:10,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335044342] [2024-11-14 05:32:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:32:10,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:32:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:32:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 32 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:13,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:32:13,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335044342] [2024-11-14 05:32:13,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335044342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:32:13,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322418595] [2024-11-14 05:32:13,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:32:13,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:32:13,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:32:13,525 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:32:13,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 05:32:14,390 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-14 05:32:14,390 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:32:14,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 184 conjuncts are in the unsatisfiable core [2024-11-14 05:32:14,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:32:14,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:32:14,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:32:14,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:14,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:14,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:14,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:14,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:15,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:15,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:15,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:15,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:15,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:32:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 32 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:15,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:32:15,455 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|) 0)) is different from false [2024-11-14 05:32:15,463 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:32:15,594 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:17,820 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int)) (v_ArrVal_1433 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1433) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:17,837 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:32:19,853 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int)) (v_ArrVal_1432 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1432) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:32:19,867 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:19,879 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int)) (v_ArrVal_1431 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1431) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:20,012 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int)) (v_ArrVal_1430 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1430) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:20,021 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:20,212 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)) 0)) is different from false [2024-11-14 05:32:20,225 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1428 (Array Int Int)) (v_ArrVal_1436 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1428) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)) 0)) is different from false [2024-11-14 05:32:20,236 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:20,249 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array Int Int)) (v_ArrVal_1436 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1427) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:20,259 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1436 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:32:20,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:32:20,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:32:20,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:32:20,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:32:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 32 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 241 not checked. [2024-11-14 05:32:20,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322418595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:32:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [932870762] [2024-11-14 05:32:20,636 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:32:20,636 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:32:20,636 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:32:20,636 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:32:20,636 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:32:21,206 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:32:22,520 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10942#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:32:22,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:32:22,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:32:22,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 38, 38] total 82 [2024-11-14 05:32:22,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159647080] [2024-11-14 05:32:22,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:32:22,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-14 05:32:22,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:32:22,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-14 05:32:22,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=5658, Unknown=132, NotChecked=2490, Total=8556 [2024-11-14 05:32:22,523 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand has 83 states, 83 states have (on average 2.036144578313253) internal successors, (169), 82 states have internal predecessors, (169), 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) [2024-11-14 05:32:25,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:32:25,847 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2024-11-14 05:32:25,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-14 05:32:25,848 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.036144578313253) internal successors, (169), 82 states have internal predecessors, (169), 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 81 [2024-11-14 05:32:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:32:25,849 INFO L225 Difference]: With dead ends: 141 [2024-11-14 05:32:25,849 INFO L226 Difference]: Without dead ends: 85 [2024-11-14 05:32:25,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 197 SyntacticMatches, 15 SemanticMatches, 109 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 2161 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=372, Invalid=8674, Unknown=134, NotChecked=3030, Total=12210 [2024-11-14 05:32:25,850 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 3855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1261 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:32:25,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 746 Invalid, 3855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2584 Invalid, 0 Unknown, 1261 Unchecked, 1.5s Time] [2024-11-14 05:32:25,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-14 05:32:25,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2024-11-14 05:32:25,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2024-11-14 05:32:25,852 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 81 [2024-11-14 05:32:25,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:32:25,852 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2024-11-14 05:32:25,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.036144578313253) internal successors, (169), 82 states have internal predecessors, (169), 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) [2024-11-14 05:32:25,853 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2024-11-14 05:32:25,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-14 05:32:25,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:32:25,853 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1] [2024-11-14 05:32:25,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-14 05:32:26,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-14 05:32:26,054 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:32:26,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:32:26,054 INFO L85 PathProgramCache]: Analyzing trace with hash 357909811, now seen corresponding path program 21 times [2024-11-14 05:32:26,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:32:26,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937315957] [2024-11-14 05:32:26,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:32:26,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:32:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:32:27,403 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 81 proven. 337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:27,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:32:27,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937315957] [2024-11-14 05:32:27,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937315957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:32:27,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100736986] [2024-11-14 05:32:27,403 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:32:27,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:32:27,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:32:27,406 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:32:27,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-14 05:32:28,327 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:32:28,327 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:32:28,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-14 05:32:28,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:32:28,340 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 [2024-11-14 05:32:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 100 proven. 318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:29,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:32:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 100 proven. 318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:31,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100736986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:32:31,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [106353782] [2024-11-14 05:32:31,244 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:32:31,244 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:32:31,244 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:32:31,244 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:32:31,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:32:32,090 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:32:33,378 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11789#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:32:33,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:32:33,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:32:33,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 67 [2024-11-14 05:32:33,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440528840] [2024-11-14 05:32:33,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:32:33,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-14 05:32:33,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:32:33,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-14 05:32:33,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=5540, Unknown=0, NotChecked=0, Total=6006 [2024-11-14 05:32:33,380 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 69 states, 68 states have (on average 2.8529411764705883) internal successors, (194), 68 states have internal predecessors, (194), 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) [2024-11-14 05:32:35,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:32:35,888 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2024-11-14 05:32:35,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-14 05:32:35,888 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 2.8529411764705883) internal successors, (194), 68 states have internal predecessors, (194), 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 83 [2024-11-14 05:32:35,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:32:35,889 INFO L225 Difference]: With dead ends: 89 [2024-11-14 05:32:35,889 INFO L226 Difference]: Without dead ends: 89 [2024-11-14 05:32:35,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2325 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=885, Invalid=9417, Unknown=0, NotChecked=0, Total=10302 [2024-11-14 05:32:35,891 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:32:35,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 657 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:32:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-14 05:32:35,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-14 05:32:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 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) [2024-11-14 05:32:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2024-11-14 05:32:35,893 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 83 [2024-11-14 05:32:35,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:32:35,893 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2024-11-14 05:32:35,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 2.8529411764705883) internal successors, (194), 68 states have internal predecessors, (194), 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) [2024-11-14 05:32:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2024-11-14 05:32:35,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-14 05:32:35,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:32:35,894 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1] [2024-11-14 05:32:35,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-14 05:32:36,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-14 05:32:36,095 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:32:36,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:32:36,095 INFO L85 PathProgramCache]: Analyzing trace with hash 208898853, now seen corresponding path program 22 times [2024-11-14 05:32:36,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:32:36,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940077428] [2024-11-14 05:32:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:32:36,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:32:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:32:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 35 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:39,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:32:39,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940077428] [2024-11-14 05:32:39,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940077428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:32:39,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469957311] [2024-11-14 05:32:39,368 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:32:39,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:32:39,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:32:39,369 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:32:39,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-14 05:32:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:32:39,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-11-14 05:32:39,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:32:39,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-14 05:32:39,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:32:39,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:39,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:40,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:40,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:40,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:40,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:40,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:40,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:40,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:40,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:32:40,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:32:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 35 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:40,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:32:40,745 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|))) is different from false [2024-11-14 05:32:40,753 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:32:40,763 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int)) (v_ArrVal_1654 (Array Int Int))) (= 0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1654) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)))) is different from false [2024-11-14 05:32:41,290 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:32:43,301 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int)) (v_ArrVal_1651 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1651) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:32:43,311 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:43,322 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int)) (v_ArrVal_1650 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1650) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:43,330 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:43,469 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:45,745 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1647 (Array Int Int)) (v_ArrVal_1655 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1647) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)) 0)) is different from false [2024-11-14 05:32:45,756 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:32:45,901 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:32:45,916 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (Array Int Int)) (v_ArrVal_1655 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1645) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:32:46,053 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~dst#1.base| v_ArrVal_1655) |c_ULTIMATE.start_cstrncpy_~src#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~src#1.offset| 11)) 0)) is different from false [2024-11-14 05:32:46,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:32:46,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:32:46,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:32:46,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:32:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 35 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 263 not checked. [2024-11-14 05:32:46,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469957311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:32:46,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [69176573] [2024-11-14 05:32:46,317 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:32:46,317 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:32:46,317 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:32:46,317 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:32:46,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:32:47,050 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:32:48,206 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12634#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:32:48,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:32:48,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:32:48,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 41, 41] total 87 [2024-11-14 05:32:48,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526196116] [2024-11-14 05:32:48,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:32:48,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-14 05:32:48,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:32:48,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-14 05:32:48,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=6380, Unknown=196, NotChecked=2450, Total=9312 [2024-11-14 05:32:48,208 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 88 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 87 states have internal predecessors, (180), 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) [2024-11-14 05:32:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:32:51,914 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2024-11-14 05:32:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-14 05:32:51,914 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 87 states have internal predecessors, (180), 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 88 [2024-11-14 05:32:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:32:51,915 INFO L225 Difference]: With dead ends: 153 [2024-11-14 05:32:51,915 INFO L226 Difference]: Without dead ends: 92 [2024-11-14 05:32:51,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 218 SyntacticMatches, 15 SemanticMatches, 114 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 2292 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=388, Invalid=9773, Unknown=197, NotChecked=2982, Total=13340 [2024-11-14 05:32:51,916 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 4273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1273 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:32:51,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 940 Invalid, 4273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2989 Invalid, 0 Unknown, 1273 Unchecked, 1.7s Time] [2024-11-14 05:32:51,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-14 05:32:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2024-11-14 05:32:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 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) [2024-11-14 05:32:51,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2024-11-14 05:32:51,919 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2024-11-14 05:32:51,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:32:51,919 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2024-11-14 05:32:51,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 87 states have internal predecessors, (180), 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) [2024-11-14 05:32:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2024-11-14 05:32:51,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-14 05:32:51,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:32:51,920 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1] [2024-11-14 05:32:51,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-14 05:32:52,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-14 05:32:52,120 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:32:52,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:32:52,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1772602652, now seen corresponding path program 23 times [2024-11-14 05:32:52,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:32:52,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616061598] [2024-11-14 05:32:52,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:32:52,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:32:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:32:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 100 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:53,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:32:53,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616061598] [2024-11-14 05:32:53,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616061598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:32:53,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026740801] [2024-11-14 05:32:53,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:32:53,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:32:53,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:32:53,315 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:32:53,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-14 05:32:55,552 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-14 05:32:55,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:32:55,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-14 05:32:55,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:32:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 132 proven. 366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:57,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:32:58,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-14 05:32:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 121 proven. 377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:58,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026740801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:32:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [344607442] [2024-11-14 05:32:58,897 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:32:58,897 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:32:58,897 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:32:58,897 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:32:58,897 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:32:59,465 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:33:00,567 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13564#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:33:00,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:33:00,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:33:00,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30, 29] total 88 [2024-11-14 05:33:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875536319] [2024-11-14 05:33:00,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:33:00,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-14 05:33:00,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:33:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-14 05:33:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=8903, Unknown=0, NotChecked=0, Total=9900 [2024-11-14 05:33:00,569 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 90 states, 89 states have (on average 3.033707865168539) internal successors, (270), 89 states have internal predecessors, (270), 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) [2024-11-14 05:33:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:02,631 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2024-11-14 05:33:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-14 05:33:02,631 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 3.033707865168539) internal successors, (270), 89 states have internal predecessors, (270), 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 90 [2024-11-14 05:33:02,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:02,632 INFO L225 Difference]: With dead ends: 96 [2024-11-14 05:33:02,632 INFO L226 Difference]: Without dead ends: 96 [2024-11-14 05:33:02,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4462 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1499, Invalid=14503, Unknown=0, NotChecked=0, Total=16002 [2024-11-14 05:33:02,633 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:02,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 493 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 05:33:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-14 05:33:02,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-14 05:33:02,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 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) [2024-11-14 05:33:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-11-14 05:33:02,637 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 90 [2024-11-14 05:33:02,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:02,638 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-11-14 05:33:02,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 3.033707865168539) internal successors, (270), 89 states have internal predecessors, (270), 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) [2024-11-14 05:33:02,638 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-11-14 05:33:02,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-14 05:33:02,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:02,639 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1] [2024-11-14 05:33:02,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-14 05:33:02,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-14 05:33:02,839 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:33:02,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash 504069140, now seen corresponding path program 24 times [2024-11-14 05:33:02,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:33:02,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491154169] [2024-11-14 05:33:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:02,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:33:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 38 proven. 522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:33:06,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:33:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491154169] [2024-11-14 05:33:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491154169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:33:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323792717] [2024-11-14 05:33:06,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:33:06,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:33:06,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:33:06,117 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:33:06,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-14 05:33:08,054 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:33:08,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:33:08,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 216 conjuncts are in the unsatisfiable core [2024-11-14 05:33:08,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:08,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:33:08,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:33:08,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:08,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:08,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:08,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:08,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:08,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:08,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:08,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:08,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:09,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:09,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:09,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:33:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 38 proven. 522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:33:09,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:33:09,325 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1889 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1889) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|) 0)) is different from false [2024-11-14 05:33:10,023 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1889 (Array Int Int)) (v_ArrVal_1886 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1886) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1889) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:33:10,030 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1889 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1889) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:33:10,045 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1889 (Array Int Int)) (v_ArrVal_1885 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1885) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1889) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:33:10,425 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1889 (Array Int Int)) (v_ArrVal_1883 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1883) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1889) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:33:10,697 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1889 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1889) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)) 0)) is different from false [2024-11-14 05:33:12,714 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1889 (Array Int Int)) (v_ArrVal_1881 (Array Int Int))) (= 0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1881) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1889) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)))) is different from false [2024-11-14 05:33:12,859 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1889 (Array Int Int)) (v_ArrVal_1880 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1880) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1889) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:33:15,066 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1879 (Array Int Int)) (v_ArrVal_1889 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_1879) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1889) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:33:15,078 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1889 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1889) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 11)) 0)) is different from false [2024-11-14 05:33:15,249 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1889 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_1889) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:33:15,254 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1889 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~dst#1.base| v_ArrVal_1889) |c_ULTIMATE.start_cstrncpy_~src#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~src#1.offset| 12)) 0)) is different from false [2024-11-14 05:33:15,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:33:15,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:33:15,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:33:15,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:33:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 38 proven. 291 refuted. 0 times theorem prover too weak. 0 trivial. 231 not checked. [2024-11-14 05:33:15,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323792717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:33:15,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1647927319] [2024-11-14 05:33:15,522 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:33:15,522 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:33:15,522 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:33:15,523 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:33:15,523 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:33:16,255 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:33:17,619 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14482#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:33:17,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:33:17,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:33:17,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 44, 44] total 97 [2024-11-14 05:33:17,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390445820] [2024-11-14 05:33:17,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:33:17,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-14 05:33:17,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:33:17,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-14 05:33:17,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=8376, Unknown=266, NotChecked=2364, Total=11342 [2024-11-14 05:33:17,621 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 98 states, 98 states have (on average 2.0306122448979593) internal successors, (199), 97 states have internal predecessors, (199), 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) [2024-11-14 05:33:22,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:22,296 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2024-11-14 05:33:22,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-14 05:33:22,296 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0306122448979593) internal successors, (199), 97 states have internal predecessors, (199), 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 95 [2024-11-14 05:33:22,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:22,296 INFO L225 Difference]: With dead ends: 165 [2024-11-14 05:33:22,296 INFO L226 Difference]: Without dead ends: 99 [2024-11-14 05:33:22,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 234 SyntacticMatches, 12 SemanticMatches, 128 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 3083 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=466, Invalid=13122, Unknown=266, NotChecked=2916, Total=16770 [2024-11-14 05:33:22,298 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 3958 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 5151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1181 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:22,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1169 Invalid, 5151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3958 Invalid, 0 Unknown, 1181 Unchecked, 2.2s Time] [2024-11-14 05:33:22,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-14 05:33:22,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2024-11-14 05:33:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 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) [2024-11-14 05:33:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2024-11-14 05:33:22,300 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 95 [2024-11-14 05:33:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:22,300 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2024-11-14 05:33:22,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.0306122448979593) internal successors, (199), 97 states have internal predecessors, (199), 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) [2024-11-14 05:33:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2024-11-14 05:33:22,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-14 05:33:22,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:22,301 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1] [2024-11-14 05:33:22,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-14 05:33:22,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:33:22,501 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:33:22,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:22,502 INFO L85 PathProgramCache]: Analyzing trace with hash -632002699, now seen corresponding path program 25 times [2024-11-14 05:33:22,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:33:22,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104233993] [2024-11-14 05:33:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:22,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:33:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 121 proven. 464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:33:24,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:33:24,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104233993] [2024-11-14 05:33:24,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104233993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:33:24,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088624331] [2024-11-14 05:33:24,092 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:33:24,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:33:24,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:33:24,093 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:33:24,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-14 05:33:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:24,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 132 conjuncts are in the unsatisfiable core [2024-11-14 05:33:24,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 144 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:33:25,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:33:26,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-14 05:33:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 144 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:33:26,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088624331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:33:26,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1195419163] [2024-11-14 05:33:26,590 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:33:26,590 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:33:26,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:33:26,590 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:33:26,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:33:27,182 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:33:28,122 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15453#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:33:28,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:33:28,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:33:28,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2024-11-14 05:33:28,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274716052] [2024-11-14 05:33:28,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:33:28,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-14 05:33:28,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:33:28,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-14 05:33:28,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=5054, Unknown=0, NotChecked=0, Total=5550 [2024-11-14 05:33:28,124 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 65 states, 64 states have (on average 3.078125) internal successors, (197), 64 states have internal predecessors, (197), 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) [2024-11-14 05:33:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:29,909 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2024-11-14 05:33:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-14 05:33:29,909 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 3.078125) internal successors, (197), 64 states have internal predecessors, (197), 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 97 [2024-11-14 05:33:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:29,910 INFO L225 Difference]: With dead ends: 103 [2024-11-14 05:33:29,910 INFO L226 Difference]: Without dead ends: 103 [2024-11-14 05:33:29,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 233 SyntacticMatches, 14 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3044 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=651, Invalid=7005, Unknown=0, NotChecked=0, Total=7656 [2024-11-14 05:33:29,911 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:29,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 745 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:33:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-14 05:33:29,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-14 05:33:29,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 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) [2024-11-14 05:33:29,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-11-14 05:33:29,914 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 97 [2024-11-14 05:33:29,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:29,914 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-11-14 05:33:29,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 3.078125) internal successors, (197), 64 states have internal predecessors, (197), 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) [2024-11-14 05:33:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-11-14 05:33:29,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-14 05:33:29,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:29,915 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1] [2024-11-14 05:33:29,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-14 05:33:30,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:33:30,115 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:33:30,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:30,115 INFO L85 PathProgramCache]: Analyzing trace with hash 70877731, now seen corresponding path program 26 times [2024-11-14 05:33:30,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:33:30,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124055482] [2024-11-14 05:33:30,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:30,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:33:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 41 proven. 611 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:33:34,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:33:34,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124055482] [2024-11-14 05:33:34,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124055482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:33:34,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917512976] [2024-11-14 05:33:34,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:33:34,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:33:34,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:33:34,179 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:33:34,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-14 05:33:37,499 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-14 05:33:37,499 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:33:37,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 233 conjuncts are in the unsatisfiable core [2024-11-14 05:33:37,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:37,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:33:37,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:33:37,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:37,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:37,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:38,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:38,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:38,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:38,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:38,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:38,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:38,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:38,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:38,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:33:38,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:33:39,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 05:33:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 41 proven. 611 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:33:39,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:33:39,148 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2141 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:33:39,157 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2141 (Array Int Int)) (v_ArrVal_2140 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2140) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:33:39,164 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2141 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:33:39,173 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2139 (Array Int Int)) (v_ArrVal_2141 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2139) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:33:39,303 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2138 (Array Int Int)) (v_ArrVal_2141 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2138) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:33:39,311 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2141 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:33:39,785 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2141 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:33:39,795 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2135 (Array Int Int)) (v_ArrVal_2141 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2135) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:33:39,803 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2141 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)))) is different from false [2024-11-14 05:33:40,103 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2134 (Array Int Int)) (v_ArrVal_2141 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2134) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:33:40,115 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2141 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)) 0)) is different from false [2024-11-14 05:33:40,129 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2133 (Array Int Int)) (v_ArrVal_2141 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2133) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)) 0)) is different from false [2024-11-14 05:33:40,326 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2132 (Array Int Int)) (v_ArrVal_2141 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2132) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:33:40,589 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2131 (Array Int Int)) (v_ArrVal_2141 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2131) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:33:40,605 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2141 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 11)) 0)) is different from false [2024-11-14 05:33:40,618 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2130 (Array Int Int)) (v_ArrVal_2141 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2130) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 11)) 0)) is different from false [2024-11-14 05:33:40,825 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2129 (Array Int Int)) (v_ArrVal_2141 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2129) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2141) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:33:41,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:33:41,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:33:41,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:33:41,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:33:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 41 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 373 not checked. [2024-11-14 05:33:41,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917512976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:33:41,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [731321929] [2024-11-14 05:33:41,667 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:33:41,667 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:33:41,667 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:33:41,667 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:33:41,667 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:33:42,214 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:33:43,955 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16406#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:33:43,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:33:43,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:33:43,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 47, 47] total 104 [2024-11-14 05:33:43,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895418551] [2024-11-14 05:33:43,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:33:43,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-14 05:33:43,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:33:43,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-14 05:33:43,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=9032, Unknown=194, NotChecked=3536, Total=13110 [2024-11-14 05:33:43,958 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 105 states, 105 states have (on average 2.0476190476190474) internal successors, (215), 104 states have internal predecessors, (215), 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) [2024-11-14 05:33:50,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:50,721 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2024-11-14 05:33:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-14 05:33:50,722 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.0476190476190474) internal successors, (215), 104 states have internal predecessors, (215), 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 102 [2024-11-14 05:33:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:50,723 INFO L225 Difference]: With dead ends: 177 [2024-11-14 05:33:50,723 INFO L226 Difference]: Without dead ends: 106 [2024-11-14 05:33:50,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 250 SyntacticMatches, 17 SemanticMatches, 137 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 3556 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=476, Invalid=14158, Unknown=196, NotChecked=4352, Total=19182 [2024-11-14 05:33:50,725 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 4224 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 6025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1788 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:50,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1246 Invalid, 6025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4224 Invalid, 0 Unknown, 1788 Unchecked, 3.2s Time] [2024-11-14 05:33:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-14 05:33:50,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2024-11-14 05:33:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 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) [2024-11-14 05:33:50,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2024-11-14 05:33:50,728 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2024-11-14 05:33:50,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:50,728 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2024-11-14 05:33:50,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.0476190476190474) internal successors, (215), 104 states have internal predecessors, (215), 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) [2024-11-14 05:33:50,729 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2024-11-14 05:33:50,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-14 05:33:50,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:50,729 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1] [2024-11-14 05:33:50,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-14 05:33:50,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-14 05:33:50,930 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:33:50,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:50,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2004105122, now seen corresponding path program 27 times [2024-11-14 05:33:50,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:33:50,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691243522] [2024-11-14 05:33:50,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:50,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:33:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 144 proven. 535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:33:53,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:33:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691243522] [2024-11-14 05:33:53,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691243522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:33:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569579998] [2024-11-14 05:33:53,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:33:53,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:33:53,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:33:53,011 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:33:53,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-14 05:33:55,800 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:33:55,801 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:33:55,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-14 05:33:55,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:55,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-14 05:33:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 169 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:33:57,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:34:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 169 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:34:00,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569579998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:34:00,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1080721100] [2024-11-14 05:34:00,705 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:34:00,705 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:34:00,705 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:34:00,705 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:34:00,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:34:01,284 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:34:02,870 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17465#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:34:02,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:34:02,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:34:02,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 82 [2024-11-14 05:34:02,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518225395] [2024-11-14 05:34:02,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:34:02,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-14 05:34:02,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:34:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-14 05:34:02,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=7957, Unknown=0, NotChecked=0, Total=8742 [2024-11-14 05:34:02,872 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 84 states, 83 states have (on average 2.9156626506024095) internal successors, (242), 83 states have internal predecessors, (242), 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) [2024-11-14 05:34:05,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:05,648 INFO L93 Difference]: Finished difference Result 110 states and 111 transitions. [2024-11-14 05:34:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-14 05:34:05,649 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.9156626506024095) internal successors, (242), 83 states have internal predecessors, (242), 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 104 [2024-11-14 05:34:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:05,649 INFO L225 Difference]: With dead ends: 110 [2024-11-14 05:34:05,649 INFO L226 Difference]: Without dead ends: 110 [2024-11-14 05:34:05,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=998, Invalid=10992, Unknown=0, NotChecked=0, Total=11990 [2024-11-14 05:34:05,650 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:05,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 774 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2215 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 05:34:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-14 05:34:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-14 05:34:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 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) [2024-11-14 05:34:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2024-11-14 05:34:05,652 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 104 [2024-11-14 05:34:05,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:05,653 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2024-11-14 05:34:05,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.9156626506024095) internal successors, (242), 83 states have internal predecessors, (242), 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) [2024-11-14 05:34:05,653 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2024-11-14 05:34:05,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-14 05:34:05,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:05,653 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1] [2024-11-14 05:34:05,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-14 05:34:05,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-14 05:34:05,854 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:34:05,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:05,854 INFO L85 PathProgramCache]: Analyzing trace with hash -12204522, now seen corresponding path program 28 times [2024-11-14 05:34:05,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:34:05,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734157107] [2024-11-14 05:34:05,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:05,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:34:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 44 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:34:11,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:34:11,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734157107] [2024-11-14 05:34:11,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734157107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:34:11,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089054100] [2024-11-14 05:34:11,499 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:34:11,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:34:11,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:34:11,500 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:34:11,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-14 05:34:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:11,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 240 conjuncts are in the unsatisfiable core [2024-11-14 05:34:11,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:11,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:34:12,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:34:12,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:12,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:12,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:12,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:12,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:12,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:13,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:13,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:13,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:13,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:13,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:13,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:13,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:13,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:34:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 44 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:34:13,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:34:14,035 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)))) is different from false [2024-11-14 05:34:14,593 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:14,605 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int)) (v_ArrVal_2408 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2408) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:14,614 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:34:14,626 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2411 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2407) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:34:14,635 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:14,647 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2406 (Array Int Int)) (v_ArrVal_2411 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2406) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:14,840 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2405 (Array Int Int)) (v_ArrVal_2411 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2405) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:14,849 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:15,042 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)) 0)) is different from false [2024-11-14 05:34:15,237 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:15,431 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:34:16,169 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:34:16,185 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int)) (v_ArrVal_2399 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2399) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:34:16,199 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 13)) 0)) is different from false [2024-11-14 05:34:16,315 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2411 (Array Int Int)) (v_ArrVal_2398 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2398) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2411) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 13)) 0)) is different from false [2024-11-14 05:34:16,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:34:16,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:34:16,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:34:16,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:34:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 44 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 413 not checked. [2024-11-14 05:34:17,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089054100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:34:17,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [792185353] [2024-11-14 05:34:17,053 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:34:17,053 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:34:17,053 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:34:17,053 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:34:17,053 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:34:17,794 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:34:19,462 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18484#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:34:19,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:34:19,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:34:19,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 50, 50] total 108 [2024-11-14 05:34:19,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433295652] [2024-11-14 05:34:19,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:34:19,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-11-14 05:34:19,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:34:19,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-11-14 05:34:19,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=9705, Unknown=309, NotChecked=3440, Total=13806 [2024-11-14 05:34:19,464 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 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) [2024-11-14 05:34:26,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:26,507 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2024-11-14 05:34:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-14 05:34:26,507 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-14 05:34:26,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:26,508 INFO L225 Difference]: With dead ends: 189 [2024-11-14 05:34:26,508 INFO L226 Difference]: Without dead ends: 113 [2024-11-14 05:34:26,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 272 SyntacticMatches, 16 SemanticMatches, 141 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 3589 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=486, Invalid=15271, Unknown=309, NotChecked=4240, Total=20306 [2024-11-14 05:34:26,509 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 4880 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 6682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1788 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:26,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1404 Invalid, 6682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4880 Invalid, 0 Unknown, 1788 Unchecked, 3.6s Time] [2024-11-14 05:34:26,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-14 05:34:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2024-11-14 05:34:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:34:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-11-14 05:34:26,512 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 109 [2024-11-14 05:34:26,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:26,512 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-11-14 05:34:26,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 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) [2024-11-14 05:34:26,512 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-11-14 05:34:26,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-14 05:34:26,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:26,513 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2024-11-14 05:34:26,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-14 05:34:26,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-14 05:34:26,713 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:34:26,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:26,714 INFO L85 PathProgramCache]: Analyzing trace with hash 339391415, now seen corresponding path program 29 times [2024-11-14 05:34:26,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:34:26,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67386948] [2024-11-14 05:34:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:26,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:34:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:28,835 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 169 proven. 611 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:34:28,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:34:28,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67386948] [2024-11-14 05:34:28,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67386948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:34:28,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853843093] [2024-11-14 05:34:28,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:34:28,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:34:28,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:34:28,837 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:34:28,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-14 05:34:32,825 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-14 05:34:32,825 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:34:32,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-14 05:34:32,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 196 proven. 584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:34:35,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:34:37,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-14 05:34:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 196 proven. 584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:34:38,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853843093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:34:38,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1076095328] [2024-11-14 05:34:38,523 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:34:38,523 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:34:38,523 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:34:38,523 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:34:38,523 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:34:39,293 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:34:40,871 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19609#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:34:40,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:34:40,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:34:40,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 87 [2024-11-14 05:34:40,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187577765] [2024-11-14 05:34:40,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:34:40,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-14 05:34:40,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:34:40,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-14 05:34:40,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1137, Invalid=8369, Unknown=0, NotChecked=0, Total=9506 [2024-11-14 05:34:40,874 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 89 states, 88 states have (on average 3.409090909090909) internal successors, (300), 88 states have internal predecessors, (300), 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) [2024-11-14 05:34:43,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:43,434 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2024-11-14 05:34:43,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-14 05:34:43,434 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 3.409090909090909) internal successors, (300), 88 states have internal predecessors, (300), 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 111 [2024-11-14 05:34:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:43,435 INFO L225 Difference]: With dead ends: 117 [2024-11-14 05:34:43,435 INFO L226 Difference]: Without dead ends: 117 [2024-11-14 05:34:43,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 254 SyntacticMatches, 16 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5322 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1511, Invalid=11371, Unknown=0, NotChecked=0, Total=12882 [2024-11-14 05:34:43,436 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:43,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 621 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:34:43,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-14 05:34:43,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-14 05:34:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 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) [2024-11-14 05:34:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2024-11-14 05:34:43,439 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 111 [2024-11-14 05:34:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:43,439 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2024-11-14 05:34:43,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 3.409090909090909) internal successors, (300), 88 states have internal predecessors, (300), 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) [2024-11-14 05:34:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2024-11-14 05:34:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-14 05:34:43,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:43,441 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1] [2024-11-14 05:34:43,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-14 05:34:43,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-14 05:34:43,641 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:34:43,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:43,641 INFO L85 PathProgramCache]: Analyzing trace with hash 721588001, now seen corresponding path program 30 times [2024-11-14 05:34:43,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:34:43,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487254283] [2024-11-14 05:34:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:43,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:34:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 47 proven. 810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:34:49,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:34:49,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487254283] [2024-11-14 05:34:49,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487254283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:34:49,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079034954] [2024-11-14 05:34:49,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:34:49,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:34:49,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:34:49,949 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:34:49,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-14 05:34:52,027 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:34:52,027 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:34:52,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 261 conjuncts are in the unsatisfiable core [2024-11-14 05:34:52,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:52,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:34:52,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:34:52,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:52,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:52,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:53,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:53,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:53,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:53,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:53,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:53,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:53,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:54,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:54,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:54,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:54,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:34:54,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:34:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 47 proven. 810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:34:54,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:34:54,785 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|) 0)) is different from false [2024-11-14 05:34:54,795 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:34:54,807 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int)) (v_ArrVal_2695 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2695) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:34:55,029 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int)) (v_ArrVal_2694 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2694) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:55,040 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:57,058 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int)) (v_ArrVal_2693 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2693) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:57,071 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:34:57,083 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int)) (v_ArrVal_2692 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2692) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:34:57,460 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:57,471 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int)) (v_ArrVal_2690 (Array Int Int))) (= 0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2690) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)))) is different from false [2024-11-14 05:34:57,480 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:59,492 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2689 (Array Int Int)) (v_ArrVal_2696 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2689) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:34:59,955 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:35:00,196 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:35:00,208 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2686 (Array Int Int)) (v_ArrVal_2696 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2686) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:35:02,964 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int)) (v_ArrVal_2684 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2684) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:35:02,976 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 13)) 0)) is different from false [2024-11-14 05:35:02,988 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int)) (v_ArrVal_2683 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2683) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 13)) 0)) is different from false [2024-11-14 05:35:02,997 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 14 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:35:03,009 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2696 (Array Int Int)) (v_ArrVal_2682 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2682) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2696) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 14 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:35:03,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:35:03,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:35:03,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:35:03,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:35:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 47 proven. 302 refuted. 0 times theorem prover too weak. 0 trivial. 508 not checked. [2024-11-14 05:35:03,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079034954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:35:03,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2054727988] [2024-11-14 05:35:03,868 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:35:03,868 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:35:03,868 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:35:03,868 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:35:03,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:35:04,615 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:35:06,616 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20692#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:35:06,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:35:06,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:35:06,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 53, 53] total 117 [2024-11-14 05:35:06,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106542054] [2024-11-14 05:35:06,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:35:06,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2024-11-14 05:35:06,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:35:06,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2024-11-14 05:35:06,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=10773, Unknown=273, NotChecked=4580, Total=16002 [2024-11-14 05:35:06,620 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 118 states, 118 states have (on average 2.0677966101694913) internal successors, (244), 117 states have internal predecessors, (244), 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) [2024-11-14 05:35:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:35:16,618 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2024-11-14 05:35:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-14 05:35:16,618 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.0677966101694913) internal successors, (244), 117 states have internal predecessors, (244), 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 116 [2024-11-14 05:35:16,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:35:16,619 INFO L225 Difference]: With dead ends: 201 [2024-11-14 05:35:16,619 INFO L226 Difference]: Without dead ends: 120 [2024-11-14 05:35:16,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 288 SyntacticMatches, 20 SemanticMatches, 153 ConstructedPredicates, 20 IntricatePredicates, 0 DeprecatedPredicates, 4226 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=526, Invalid=17370, Unknown=274, NotChecked=5700, Total=23870 [2024-11-14 05:35:16,620 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 5083 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 7480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 5083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2382 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:35:16,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1587 Invalid, 7480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 5083 Invalid, 0 Unknown, 2382 Unchecked, 4.6s Time] [2024-11-14 05:35:16,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-14 05:35:16,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2024-11-14 05:35:16,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 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) [2024-11-14 05:35:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-11-14 05:35:16,622 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116 [2024-11-14 05:35:16,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:35:16,623 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-11-14 05:35:16,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.0677966101694913) internal successors, (244), 117 states have internal predecessors, (244), 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) [2024-11-14 05:35:16,623 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-11-14 05:35:16,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-14 05:35:16,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:35:16,623 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1] [2024-11-14 05:35:16,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-14 05:35:16,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-14 05:35:16,824 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:35:16,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:35:16,824 INFO L85 PathProgramCache]: Analyzing trace with hash 649476704, now seen corresponding path program 31 times [2024-11-14 05:35:16,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:35:16,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467715158] [2024-11-14 05:35:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:35:16,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:35:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:35:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 196 proven. 692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:35:18,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:35:18,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467715158] [2024-11-14 05:35:18,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467715158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:35:18,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903460069] [2024-11-14 05:35:18,791 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:35:18,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:35:18,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:35:18,792 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:35:18,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-14 05:35:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:35:19,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 159 conjuncts are in the unsatisfiable core [2024-11-14 05:35:19,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:35:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 225 proven. 663 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:35:19,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:35:21,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-14 05:35:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 225 proven. 663 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:35:21,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903460069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:35:21,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [533729750] [2024-11-14 05:35:21,865 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:35:21,865 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:35:21,865 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:35:21,865 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:35:21,865 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:35:22,604 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:35:24,024 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21860#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:35:24,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:35:24,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:35:24,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 59 [2024-11-14 05:35:24,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144995280] [2024-11-14 05:35:24,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:35:24,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-14 05:35:24,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:35:24,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-14 05:35:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=4423, Unknown=0, NotChecked=0, Total=4830 [2024-11-14 05:35:24,025 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 61 states, 60 states have (on average 3.45) internal successors, (207), 60 states have internal predecessors, (207), 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) [2024-11-14 05:35:27,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:35:27,202 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2024-11-14 05:35:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-14 05:35:27,202 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 3.45) internal successors, (207), 60 states have internal predecessors, (207), 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 118 [2024-11-14 05:35:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:35:27,203 INFO L225 Difference]: With dead ends: 124 [2024-11-14 05:35:27,203 INFO L226 Difference]: Without dead ends: 124 [2024-11-14 05:35:27,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 304 SyntacticMatches, 17 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=606, Invalid=6704, Unknown=0, NotChecked=0, Total=7310 [2024-11-14 05:35:27,204 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:35:27,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 809 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-14 05:35:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-14 05:35:27,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-14 05:35:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 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) [2024-11-14 05:35:27,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2024-11-14 05:35:27,208 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 118 [2024-11-14 05:35:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:35:27,208 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2024-11-14 05:35:27,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 3.45) internal successors, (207), 60 states have internal predecessors, (207), 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) [2024-11-14 05:35:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2024-11-14 05:35:27,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 05:35:27,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:35:27,209 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1] [2024-11-14 05:35:27,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-14 05:35:27,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-14 05:35:27,410 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:35:27,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:35:27,410 INFO L85 PathProgramCache]: Analyzing trace with hash 925747736, now seen corresponding path program 32 times [2024-11-14 05:35:27,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:35:27,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806224584] [2024-11-14 05:35:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:35:27,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:35:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:35:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 50 proven. 920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:35:34,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:35:34,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806224584] [2024-11-14 05:35:34,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806224584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:35:34,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600876148] [2024-11-14 05:35:34,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:35:34,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:35:34,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:35:34,068 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:35:34,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-14 05:35:55,157 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-14 05:35:55,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:35:55,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 352 conjuncts are in the unsatisfiable core [2024-11-14 05:35:55,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:35:55,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:35:57,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 05:35:58,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:35:58,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:35:58,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:35:59,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:35:59,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:36:00,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:36:00,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:36:01,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:36:01,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:36:02,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:36:02,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:36:02,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:36:03,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:36:03,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:36:04,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:36:04,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:36:04,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 05:36:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 50 proven. 920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:36:04,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:36:04,831 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|) 0)) is different from false [2024-11-14 05:36:05,190 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int)) (v_ArrVal_2998 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2998) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:36:05,846 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:36:05,861 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int)) (v_ArrVal_2996 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2996) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:36:05,873 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:36:05,886 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int)) (v_ArrVal_2995 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2995) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:36:05,898 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:36:06,263 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:36:06,277 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int)) (v_ArrVal_2993 (Array Int Int))) (= 0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2993) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)))) is different from false [2024-11-14 05:36:06,289 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:36:06,359 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int)) (v_ArrVal_2992 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2992) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:36:07,746 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:36:07,828 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2989 (Array Int Int)) (v_ArrVal_2999 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2989) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:36:07,842 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 11)) 0)) is different from false [2024-11-14 05:36:07,858 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2988 (Array Int Int)) (v_ArrVal_2999 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2988) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 11)) 0)) is different from false [2024-11-14 05:36:07,870 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:36:07,947 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int)) (v_ArrVal_2987 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_2987) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:36:07,961 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 13)) 0)) is different from false [2024-11-14 05:36:10,028 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 16 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:36:10,035 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2999 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~dst#1.base| v_ArrVal_2999) |c_ULTIMATE.start_cstrncpy_~src#1.base|) (+ 16 |c_ULTIMATE.start_cstrncpy_~src#1.offset|)) 0)) is different from false [2024-11-14 05:36:10,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:36:10,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:36:10,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:36:10,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:36:10,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 05:36:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 50 proven. 382 refuted. 0 times theorem prover too weak. 0 trivial. 538 not checked. [2024-11-14 05:36:10,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600876148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:36:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [151033449] [2024-11-14 05:36:10,657 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:36:10,657 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:36:10,657 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:36:10,657 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:36:10,657 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:36:11,274 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:36:14,106 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23042#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:36:14,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:36:14,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:36:14,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 56, 56] total 160 [2024-11-14 05:36:14,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795114240] [2024-11-14 05:36:14,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:36:14,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2024-11-14 05:36:14,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:36:14,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2024-11-14 05:36:14,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=21699, Unknown=482, NotChecked=6340, Total=29070 [2024-11-14 05:36:14,108 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 161 states, 161 states have (on average 2.012422360248447) internal successors, (324), 160 states have internal predecessors, (324), 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) [2024-11-14 05:36:29,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:29,158 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2024-11-14 05:36:29,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-14 05:36:29,158 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 2.012422360248447) internal successors, (324), 160 states have internal predecessors, (324), 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 123 [2024-11-14 05:36:29,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:29,159 INFO L225 Difference]: With dead ends: 213 [2024-11-14 05:36:29,159 INFO L226 Difference]: Without dead ends: 127 [2024-11-14 05:36:29,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 269 SyntacticMatches, 20 SemanticMatches, 199 ConstructedPredicates, 20 IntricatePredicates, 0 DeprecatedPredicates, 10593 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=740, Invalid=31438, Unknown=482, NotChecked=7540, Total=40200 [2024-11-14 05:36:29,162 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 8021 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 10558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 8021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2521 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:29,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2512 Invalid, 10558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 8021 Invalid, 0 Unknown, 2521 Unchecked, 7.8s Time] [2024-11-14 05:36:29,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-14 05:36:29,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2024-11-14 05:36:29,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:36:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2024-11-14 05:36:29,166 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 123 [2024-11-14 05:36:29,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:29,166 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2024-11-14 05:36:29,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 2.012422360248447) internal successors, (324), 160 states have internal predecessors, (324), 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) [2024-11-14 05:36:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2024-11-14 05:36:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-14 05:36:29,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:29,167 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1] [2024-11-14 05:36:29,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-14 05:36:29,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:29,368 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:36:29,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash 897436153, now seen corresponding path program 33 times [2024-11-14 05:36:29,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:36:29,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637813548] [2024-11-14 05:36:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:29,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:36:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 225 proven. 778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:36:32,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:36:32,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637813548] [2024-11-14 05:36:32,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637813548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:36:32,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432219624] [2024-11-14 05:36:32,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:36:32,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:36:32,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:36:32,570 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:36:32,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-14 05:36:48,988 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:36:48,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:36:49,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 171 conjuncts are in the unsatisfiable core [2024-11-14 05:36:49,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 256 proven. 747 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:36:51,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:36:54,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-14 05:36:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 256 proven. 747 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:36:56,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432219624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:36:56,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1643944839] [2024-11-14 05:36:56,415 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:36:56,415 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:36:56,415 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:36:56,416 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:36:56,416 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:36:57,281 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:36:59,391 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24314#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:36:59,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:36:59,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:36:59,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 97 [2024-11-14 05:36:59,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527759886] [2024-11-14 05:36:59,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:36:59,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-14 05:36:59,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:36:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-14 05:36:59,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=943, Invalid=10613, Unknown=0, NotChecked=0, Total=11556 [2024-11-14 05:36:59,393 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 99 states, 98 states have (on average 2.9591836734693877) internal successors, (290), 98 states have internal predecessors, (290), 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) [2024-11-14 05:37:06,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:06,191 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2024-11-14 05:37:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-14 05:37:06,192 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 2.9591836734693877) internal successors, (290), 98 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-11-14 05:37:06,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:06,193 INFO L225 Difference]: With dead ends: 131 [2024-11-14 05:37:06,193 INFO L226 Difference]: Without dead ends: 131 [2024-11-14 05:37:06,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4836 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=1839, Invalid=18753, Unknown=0, NotChecked=0, Total=20592 [2024-11-14 05:37:06,194 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 3336 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:06,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1190 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3336 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-14 05:37:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-14 05:37:06,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-14 05:37:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 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) [2024-11-14 05:37:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2024-11-14 05:37:06,198 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 125 [2024-11-14 05:37:06,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:06,198 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2024-11-14 05:37:06,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 2.9591836734693877) internal successors, (290), 98 states have internal predecessors, (290), 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) [2024-11-14 05:37:06,198 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2024-11-14 05:37:06,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-14 05:37:06,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:37:06,199 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1] [2024-11-14 05:37:06,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-14 05:37:06,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-14 05:37:06,400 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:37:06,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:37:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1457328671, now seen corresponding path program 34 times [2024-11-14 05:37:06,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:37:06,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901011961] [2024-11-14 05:37:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:06,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:37:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 53 proven. 1037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:37:14,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:37:14,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901011961] [2024-11-14 05:37:14,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901011961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:37:14,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192156605] [2024-11-14 05:37:14,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:37:14,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:37:14,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:37:14,052 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:37:14,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-14 05:37:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:14,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 285 conjuncts are in the unsatisfiable core [2024-11-14 05:37:14,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:14,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:37:14,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:37:14,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:15,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:15,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:15,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:15,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:15,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:15,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:15,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:16,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:16,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:16,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:16,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:16,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:16,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:16,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:17,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:37:17,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:37:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 53 proven. 1037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:37:17,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:37:17,230 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|) 0)) is different from false [2024-11-14 05:37:17,658 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:37:17,669 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3316 (Array Int Int)) (v_ArrVal_3318 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3316) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:37:17,678 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:37:17,689 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3315 (Array Int Int)) (v_ArrVal_3318 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3315) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:37:18,281 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3313 (Array Int Int)) (v_ArrVal_3318 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3313) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:37:20,512 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3318 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3312) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:37:20,522 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:37:20,532 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3318 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3311) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:37:20,540 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)) 0)) is different from false [2024-11-14 05:37:20,551 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3318 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3310) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)) 0)) is different from false [2024-11-14 05:37:20,560 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:37:22,985 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array Int Int)) (v_ArrVal_3308 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3308) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:37:23,215 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3307 (Array Int Int)) (v_ArrVal_3318 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3307) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 11)) 0)) is different from false [2024-11-14 05:37:23,224 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:37:25,241 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3306 (Array Int Int)) (v_ArrVal_3318 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3306) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:37:25,253 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 13)) 0)) is different from false [2024-11-14 05:37:27,265 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3305 (Array Int Int)) (v_ArrVal_3318 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3305) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 13)) 0)) is different from false [2024-11-14 05:37:27,491 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3304 (Array Int Int)) (v_ArrVal_3318 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3304) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 14 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:37:27,499 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 15)) 0)) is different from false [2024-11-14 05:37:27,510 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3303 (Array Int Int)) (v_ArrVal_3318 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3303) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 15)) 0)) is different from false [2024-11-14 05:37:27,519 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3318) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 16 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:37:28,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:37:28,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:37:28,179 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:37:28,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:37:28,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 53 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 628 not checked. [2024-11-14 05:37:28,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192156605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:37:28,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [692234021] [2024-11-14 05:37:28,731 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:37:28,731 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:37:28,731 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:37:28,731 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:37:28,731 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:37:29,676 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:37:31,633 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25561#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:37:31,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:37:31,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:37:31,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 59, 59] total 129 [2024-11-14 05:37:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895683443] [2024-11-14 05:37:31,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:37:31,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2024-11-14 05:37:31,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:37:31,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2024-11-14 05:37:31,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=12937, Unknown=310, NotChecked=5522, Total=19182 [2024-11-14 05:37:31,635 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 130 states, 130 states have (on average 2.076923076923077) internal successors, (270), 129 states have internal predecessors, (270), 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) [2024-11-14 05:37:43,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:43,404 INFO L93 Difference]: Finished difference Result 225 states and 226 transitions. [2024-11-14 05:37:43,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-14 05:37:43,405 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.076923076923077) internal successors, (270), 129 states have internal predecessors, (270), 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 130 [2024-11-14 05:37:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:43,406 INFO L225 Difference]: With dead ends: 225 [2024-11-14 05:37:43,406 INFO L226 Difference]: Without dead ends: 134 [2024-11-14 05:37:43,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 326 SyntacticMatches, 23 SemanticMatches, 168 ConstructedPredicates, 22 IntricatePredicates, 0 DeprecatedPredicates, 5057 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=577, Invalid=20956, Unknown=311, NotChecked=6886, Total=28730 [2024-11-14 05:37:43,407 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 7182 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 10129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 7182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2930 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:43,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2119 Invalid, 10129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 7182 Invalid, 0 Unknown, 2930 Unchecked, 5.7s Time] [2024-11-14 05:37:43,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-14 05:37:43,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2024-11-14 05:37:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 132 states have internal predecessors, (134), 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) [2024-11-14 05:37:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2024-11-14 05:37:43,412 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2024-11-14 05:37:43,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:43,413 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2024-11-14 05:37:43,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.076923076923077) internal successors, (270), 129 states have internal predecessors, (270), 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) [2024-11-14 05:37:43,413 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2024-11-14 05:37:43,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-14 05:37:43,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:37:43,414 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1] [2024-11-14 05:37:43,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-14 05:37:43,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:37:43,618 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:37:43,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:37:43,618 INFO L85 PathProgramCache]: Analyzing trace with hash 172532510, now seen corresponding path program 35 times [2024-11-14 05:37:43,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:37:43,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894386129] [2024-11-14 05:37:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:43,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:37:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 256 proven. 869 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:37:46,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:37:46,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894386129] [2024-11-14 05:37:46,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894386129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:37:46,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099686760] [2024-11-14 05:37:46,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:37:46,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:37:46,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:37:46,273 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:37:46,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-14 05:37:58,445 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-14 05:37:58,445 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:37:58,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 147 conjuncts are in the unsatisfiable core [2024-11-14 05:37:58,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 306 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:38:02,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:05,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-14 05:38:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 289 proven. 836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:38:07,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099686760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:07,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1456229241] [2024-11-14 05:38:07,272 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:38:07,272 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:38:07,272 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:38:07,272 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:38:07,272 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:38:08,154 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:38:09,963 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26925#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:38:09,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:38:09,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:38:09,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 42, 41] total 124 [2024-11-14 05:38:09,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528005275] [2024-11-14 05:38:09,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:38:09,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-11-14 05:38:09,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:09,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-11-14 05:38:09,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1982, Invalid=16108, Unknown=0, NotChecked=0, Total=18090 [2024-11-14 05:38:09,966 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand has 126 states, 125 states have (on average 3.168) internal successors, (396), 125 states have internal predecessors, (396), 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) [2024-11-14 05:38:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:14,737 INFO L93 Difference]: Finished difference Result 138 states and 139 transitions. [2024-11-14 05:38:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-14 05:38:14,738 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 3.168) internal successors, (396), 125 states have internal predecessors, (396), 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 132 [2024-11-14 05:38:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:14,738 INFO L225 Difference]: With dead ends: 138 [2024-11-14 05:38:14,738 INFO L226 Difference]: Without dead ends: 138 [2024-11-14 05:38:14,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8474 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=2946, Invalid=27156, Unknown=0, NotChecked=0, Total=30102 [2024-11-14 05:38:14,742 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:14,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 910 Invalid, 2387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:38:14,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-14 05:38:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-11-14 05:38:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 137 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:14,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2024-11-14 05:38:14,746 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 132 [2024-11-14 05:38:14,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:14,746 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2024-11-14 05:38:14,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 3.168) internal successors, (396), 125 states have internal predecessors, (396), 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) [2024-11-14 05:38:14,747 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2024-11-14 05:38:14,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-14 05:38:14,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:14,748 INFO L215 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1] [2024-11-14 05:38:14,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-14 05:38:14,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-14 05:38:14,948 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:38:14,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2064984090, now seen corresponding path program 36 times [2024-11-14 05:38:14,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:14,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523151631] [2024-11-14 05:38:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:14,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 56 proven. 1161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:38:23,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:23,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523151631] [2024-11-14 05:38:23,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523151631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:38:23,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989295413] [2024-11-14 05:38:23,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:38:23,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:38:23,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:38:23,046 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:38:23,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-14 05:38:32,162 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:38:32,162 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:32,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 310 conjuncts are in the unsatisfiable core [2024-11-14 05:38:32,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:32,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:38:32,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:38:32,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:32,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:32,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:32,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:33,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:33,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:33,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:33,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:33,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:33,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:33,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:34,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:34,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:34,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:34,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:34,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:34,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:38:34,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:38:35,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 05:38:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 56 proven. 1161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:38:35,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:35,256 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|) 0)) is different from false [2024-11-14 05:38:35,264 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:38:35,494 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:38:35,717 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:38:37,730 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3651 (Array Int Int)) (v_ArrVal_3654 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3651) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:38:37,960 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3650 (Array Int Int)) (v_ArrVal_3654 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3650) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:38:38,630 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int)) (v_ArrVal_3648 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3648) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:38:40,861 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int)) (v_ArrVal_3647 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3647) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:38:40,873 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)) 0)) is different from false [2024-11-14 05:38:41,118 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:38:41,128 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int)) (v_ArrVal_3645 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3645) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:38:41,137 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:38:41,380 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 11)) 0)) is different from false [2024-11-14 05:38:41,391 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3643 (Array Int Int)) (v_ArrVal_3654 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3643) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 11)) 0)) is different from false [2024-11-14 05:38:41,629 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3642 (Array Int Int)) (v_ArrVal_3654 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3642) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:38:41,638 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 13)) 0)) is different from false [2024-11-14 05:38:43,651 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3641 (Array Int Int)) (v_ArrVal_3654 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3641) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 13)) 0)) is different from false [2024-11-14 05:38:43,662 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 14 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:38:43,673 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3640 (Array Int Int)) (v_ArrVal_3654 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3640) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 14 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:38:45,924 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int)) (v_ArrVal_3639 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3639) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 15)) 0)) is different from false [2024-11-14 05:38:46,162 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3654 (Array Int Int)) (v_ArrVal_3638 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3638) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_3654) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 16 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:38:47,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:38:47,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:38:47,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:38:47,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:38:47,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 56 proven. 492 refuted. 0 times theorem prover too weak. 0 trivial. 669 not checked. [2024-11-14 05:38:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989295413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [161386733] [2024-11-14 05:38:47,563 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:38:47,563 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:38:47,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:38:47,563 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:38:47,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:38:48,325 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:38:50,552 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28244#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:38:50,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:38:50,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:38:50,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 62, 62] total 139 [2024-11-14 05:38:50,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040335972] [2024-11-14 05:38:50,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:38:50,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2024-11-14 05:38:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:50,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2024-11-14 05:38:50,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=15442, Unknown=446, NotChecked=5712, Total=22052 [2024-11-14 05:38:50,554 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand has 140 states, 140 states have (on average 2.0714285714285716) internal successors, (290), 139 states have internal predecessors, (290), 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) [2024-11-14 05:39:02,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:02,829 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2024-11-14 05:39:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-14 05:39:02,830 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 2.0714285714285716) internal successors, (290), 139 states have internal predecessors, (290), 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 137 [2024-11-14 05:39:02,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:02,831 INFO L225 Difference]: With dead ends: 237 [2024-11-14 05:39:02,831 INFO L226 Difference]: Without dead ends: 141 [2024-11-14 05:39:02,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 341 SyntacticMatches, 21 SemanticMatches, 181 ConstructedPredicates, 21 IntricatePredicates, 0 DeprecatedPredicates, 6147 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=635, Invalid=25082, Unknown=449, NotChecked=7140, Total=33306 [2024-11-14 05:39:02,833 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 7640 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 10601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 7640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2943 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:02,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2322 Invalid, 10601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 7640 Invalid, 0 Unknown, 2943 Unchecked, 5.8s Time] [2024-11-14 05:39:02,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-14 05:39:02,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2024-11-14 05:39:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 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) [2024-11-14 05:39:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2024-11-14 05:39:02,837 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 137 [2024-11-14 05:39:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:02,837 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2024-11-14 05:39:02,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 2.0714285714285716) internal successors, (290), 139 states have internal predecessors, (290), 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) [2024-11-14 05:39:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2024-11-14 05:39:02,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-14 05:39:02,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:02,838 INFO L215 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1] [2024-11-14 05:39:02,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-14 05:39:03,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-14 05:39:03,039 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:39:03,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:03,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1272138299, now seen corresponding path program 37 times [2024-11-14 05:39:03,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:39:03,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429657078] [2024-11-14 05:39:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:03,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:39:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1254 backedges. 289 proven. 965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:39:06,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:39:06,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429657078] [2024-11-14 05:39:06,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429657078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:06,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876918915] [2024-11-14 05:39:06,106 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:39:06,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:06,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:06,108 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:06,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-14 05:39:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:06,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 186 conjuncts are in the unsatisfiable core [2024-11-14 05:39:06,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1254 backedges. 324 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:39:08,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:10,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-14 05:39:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1254 backedges. 324 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:39:11,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876918915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:11,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [533154241] [2024-11-14 05:39:11,866 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:39:11,866 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:39:11,866 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:39:11,866 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:39:11,866 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:39:12,847 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:39:14,525 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29636#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:39:14,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:39:14,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:39:14,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 87 [2024-11-14 05:39:14,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711611819] [2024-11-14 05:39:14,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:39:14,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-14 05:39:14,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:39:14,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-14 05:39:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=911, Invalid=8595, Unknown=0, NotChecked=0, Total=9506 [2024-11-14 05:39:14,527 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 89 states, 88 states have (on average 3.1931818181818183) internal successors, (281), 88 states have internal predecessors, (281), 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) [2024-11-14 05:39:18,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:18,696 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2024-11-14 05:39:18,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-14 05:39:18,697 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 3.1931818181818183) internal successors, (281), 88 states have internal predecessors, (281), 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 139 [2024-11-14 05:39:18,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:18,698 INFO L225 Difference]: With dead ends: 145 [2024-11-14 05:39:18,698 INFO L226 Difference]: Without dead ends: 145 [2024-11-14 05:39:18,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 342 SyntacticMatches, 20 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5694 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1195, Invalid=12377, Unknown=0, NotChecked=0, Total=13572 [2024-11-14 05:39:18,699 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 3615 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:18,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1270 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3615 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-14 05:39:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-14 05:39:18,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-14 05:39:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 144 states have internal predecessors, (146), 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) [2024-11-14 05:39:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2024-11-14 05:39:18,701 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 139 [2024-11-14 05:39:18,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:18,701 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2024-11-14 05:39:18,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 3.1931818181818183) internal successors, (281), 88 states have internal predecessors, (281), 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) [2024-11-14 05:39:18,702 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2024-11-14 05:39:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-14 05:39:18,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:18,702 INFO L215 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1] [2024-11-14 05:39:18,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:18,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-14 05:39:18,903 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:39:18,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash -896046307, now seen corresponding path program 38 times [2024-11-14 05:39:18,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:39:18,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830090315] [2024-11-14 05:39:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:18,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:39:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 59 proven. 1292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:39:29,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:39:29,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830090315] [2024-11-14 05:39:29,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830090315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:29,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467131342] [2024-11-14 05:39:29,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:39:29,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:29,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:29,674 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:29,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-14 05:40:01,693 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-11-14 05:40:01,693 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:40:01,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 400 conjuncts are in the unsatisfiable core [2024-11-14 05:40:01,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:01,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-14 05:40:05,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 05:40:06,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:06,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:07,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:07,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:08,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:08,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:08,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:09,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:09,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:10,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:10,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:11,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:11,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:12,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:12,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:13,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:13,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:14,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:14,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:40:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 59 proven. 1292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:40:14,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:14,910 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|) 0)) is different from false [2024-11-14 05:40:14,925 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:40:14,947 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4006 (Array Int Int)) (v_ArrVal_4007 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4006) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 1)) 0)) is different from false [2024-11-14 05:40:16,147 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4004 (Array Int Int)) (v_ArrVal_4007 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4004) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:40:16,515 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4003 (Array Int Int)) (v_ArrVal_4007 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4003) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 4)) 0)) is different from false [2024-11-14 05:40:16,528 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 5 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:40:16,945 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:40:17,019 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4001 (Array Int Int)) (v_ArrVal_4007 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4001) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:40:17,038 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:40:17,831 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int)) (v_ArrVal_3999 (Array Int Int))) (= 0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3999) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)))) is different from false [2024-11-14 05:40:17,843 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:40:17,862 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int)) (v_ArrVal_3998 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3998) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:40:17,874 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:40:17,908 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int)) (v_ArrVal_3997 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3997) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:40:17,925 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 11)) 0)) is different from false [2024-11-14 05:40:18,362 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:40:18,378 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3995 (Array Int Int)) (v_ArrVal_4007 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3995) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:40:18,389 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 13)) 0)) is different from false [2024-11-14 05:40:18,828 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 14 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:40:18,846 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3993 (Array Int Int)) (v_ArrVal_4007 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3993) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 14 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:40:19,237 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3992 (Array Int Int)) (v_ArrVal_4007 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3992) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 15)) 0)) is different from false [2024-11-14 05:40:20,516 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3990 (Array Int Int)) (v_ArrVal_4007 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_3990) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 17)) 0)) is different from false [2024-11-14 05:40:20,527 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 18)) 0)) is different from false [2024-11-14 05:40:20,966 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4007 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4007) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 19 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:40:21,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:40:21,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:40:21,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:40:21,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:40:21,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 05:40:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 59 proven. 509 refuted. 0 times theorem prover too weak. 0 trivial. 783 not checked. [2024-11-14 05:40:26,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467131342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:26,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1112067627] [2024-11-14 05:40:26,194 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:40:26,194 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:40:26,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:40:26,194 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:40:26,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:40:26,991 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:40:30,484 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31040#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:40:30,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:40:30,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:40:30,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 65, 65] total 208 [2024-11-14 05:40:30,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884843732] [2024-11-14 05:40:30,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:40:30,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 209 states [2024-11-14 05:40:30,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:40:30,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2024-11-14 05:40:30,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=36298, Unknown=557, NotChecked=9768, Total=47306 [2024-11-14 05:40:30,489 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand has 209 states, 209 states have (on average 2.0) internal successors, (418), 208 states have internal predecessors, (418), 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) [2024-11-14 05:40:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:40:54,161 INFO L93 Difference]: Finished difference Result 249 states and 250 transitions. [2024-11-14 05:40:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-14 05:40:54,162 INFO L78 Accepts]: Start accepts. Automaton has has 209 states, 209 states have (on average 2.0) internal successors, (418), 208 states have internal predecessors, (418), 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 144 [2024-11-14 05:40:54,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:40:54,162 INFO L225 Difference]: With dead ends: 249 [2024-11-14 05:40:54,162 INFO L226 Difference]: Without dead ends: 148 [2024-11-14 05:40:54,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 298 SyntacticMatches, 24 SemanticMatches, 253 ConstructedPredicates, 24 IntricatePredicates, 0 DeprecatedPredicates, 17344 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=938, Invalid=51730, Unknown=558, NotChecked=11544, Total=64770 [2024-11-14 05:40:54,165 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 3816 mSDsCounter, 0 mSdLazyCounter, 11735 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3855 SdHoareTripleChecker+Invalid, 15284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 11735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3530 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:40:54,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3855 Invalid, 15284 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 11735 Invalid, 0 Unknown, 3530 Unchecked, 11.9s Time] [2024-11-14 05:40:54,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-14 05:40:54,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2024-11-14 05:40:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0136986301369864) internal successors, (148), 146 states have internal predecessors, (148), 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) [2024-11-14 05:40:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2024-11-14 05:40:54,168 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2024-11-14 05:40:54,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:40:54,168 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2024-11-14 05:40:54,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 209 states, 209 states have (on average 2.0) internal successors, (418), 208 states have internal predecessors, (418), 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) [2024-11-14 05:40:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2024-11-14 05:40:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-14 05:40:54,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:40:54,169 INFO L215 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1] [2024-11-14 05:40:54,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-14 05:40:54,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-14 05:40:54,370 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:40:54,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:40:54,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1810509348, now seen corresponding path program 39 times [2024-11-14 05:40:54,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:40:54,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061781572] [2024-11-14 05:40:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:54,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:40:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 324 proven. 1066 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:40:58,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:40:58,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061781572] [2024-11-14 05:40:58,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061781572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:40:58,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601700326] [2024-11-14 05:40:58,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:40:58,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:40:58,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:40:58,320 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:40:58,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-14 05:41:42,848 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:41:42,848 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:41:42,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 198 conjuncts are in the unsatisfiable core [2024-11-14 05:41:42,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:41:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 361 proven. 1029 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:41:45,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:41:47,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-14 05:41:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 361 proven. 1029 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:41:50,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601700326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:41:50,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [859357953] [2024-11-14 05:41:50,595 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:41:50,595 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:41:50,595 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:41:50,595 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:41:50,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:41:51,181 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:41:53,560 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32527#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (<= (+ (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) 1) |ULTIMATE.start_cstrncpy_~s~0#1.offset|) (<= 0 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) (= |ULTIMATE.start_cstrncpy_~dst#1.offset| 0) (<= 1 |ULTIMATE.start_cstrncpy_~s~0#1.offset|))' at error location [2024-11-14 05:41:53,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:41:53,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:41:53,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 112 [2024-11-14 05:41:53,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75977958] [2024-11-14 05:41:53,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:41:53,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2024-11-14 05:41:53,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:41:53,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2024-11-14 05:41:53,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1723, Invalid=13529, Unknown=0, NotChecked=0, Total=15252 [2024-11-14 05:41:53,564 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand has 114 states, 113 states have (on average 2.9911504424778763) internal successors, (338), 113 states have internal predecessors, (338), 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) [2024-11-14 05:42:00,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:42:00,436 INFO L93 Difference]: Finished difference Result 152 states and 153 transitions. [2024-11-14 05:42:00,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-14 05:42:00,436 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 2.9911504424778763) internal successors, (338), 113 states have internal predecessors, (338), 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 146 [2024-11-14 05:42:00,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:42:00,437 INFO L225 Difference]: With dead ends: 152 [2024-11-14 05:42:00,437 INFO L226 Difference]: Without dead ends: 152 [2024-11-14 05:42:00,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7121 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=2078, Invalid=18802, Unknown=0, NotChecked=0, Total=20880 [2024-11-14 05:42:00,439 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 4211 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 4211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:42:00,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1579 Invalid, 4211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4211 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-14 05:42:00,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-14 05:42:00,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-11-14 05:42:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0132450331125828) internal successors, (153), 151 states have internal predecessors, (153), 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) [2024-11-14 05:42:00,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-11-14 05:42:00,442 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 146 [2024-11-14 05:42:00,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:42:00,442 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-11-14 05:42:00,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 2.9911504424778763) internal successors, (338), 113 states have internal predecessors, (338), 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) [2024-11-14 05:42:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-11-14 05:42:00,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-14 05:42:00,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:42:00,443 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 20, 1, 1, 1, 1, 1] [2024-11-14 05:42:00,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-14 05:42:00,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:42:00,643 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:42:00,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:42:00,644 INFO L85 PathProgramCache]: Analyzing trace with hash -863141860, now seen corresponding path program 40 times [2024-11-14 05:42:00,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:42:00,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017398370] [2024-11-14 05:42:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:42:00,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:42:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:42:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 62 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:42:12,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:42:12,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017398370] [2024-11-14 05:42:12,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017398370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:42:12,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280825208] [2024-11-14 05:42:12,573 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:42:12,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:42:12,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:42:12,576 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:42:12,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-14 05:42:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:42:13,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 328 conjuncts are in the unsatisfiable core [2024-11-14 05:42:13,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:42:13,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-14 05:42:13,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 05:42:14,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:14,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:14,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:14,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:14,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:15,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:15,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:15,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:15,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:15,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:16,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:16,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:16,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:16,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:17,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:17,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:17,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:17,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:17,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 05:42:17,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:42:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 62 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:42:17,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:42:18,815 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 2 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:42:19,404 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4374 (Array Int Int)) (v_ArrVal_4377 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4374) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 3 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:42:20,754 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 6 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:42:21,137 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:42:23,152 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int)) (v_ArrVal_4370 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4370) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 7 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:42:23,164 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 8)) 0)) is different from false [2024-11-14 05:42:23,783 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int)) (v_ArrVal_4368 (Array Int Int))) (= 0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4368) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 9 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)))) is different from false [2024-11-14 05:42:23,794 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 10)) 0)) is different from false [2024-11-14 05:42:24,122 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 11)) 0)) is different from false [2024-11-14 05:42:24,136 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4366 (Array Int Int)) (v_ArrVal_4377 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4366) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 11)) 0)) is different from false [2024-11-14 05:42:24,147 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:42:26,162 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4365 (Array Int Int)) (v_ArrVal_4377 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4365) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 12)) 0)) is different from false [2024-11-14 05:42:26,522 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4364 (Array Int Int)) (v_ArrVal_4377 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4364) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 13)) 0)) is different from false [2024-11-14 05:42:28,873 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4363 (Array Int Int)) (v_ArrVal_4377 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4363) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 14 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:42:28,887 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 15)) 0)) is different from false [2024-11-14 05:42:29,264 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 16 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:42:29,759 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 17)) 0)) is different from false [2024-11-14 05:42:30,183 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 18)) 0)) is different from false [2024-11-14 05:42:30,196 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int)) (v_ArrVal_4359 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4359) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ |c_ULTIMATE.start_cstrncpy_~s~0#1.offset| 18)) 0)) is different from false [2024-11-14 05:42:30,207 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 19 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:42:32,229 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4377 (Array Int Int)) (v_ArrVal_4358 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_cstrncpy_#t~post2#1.base| v_ArrVal_4358) |c_ULTIMATE.start_cstrncpy_~d~0#1.base| v_ArrVal_4377) |c_ULTIMATE.start_cstrncpy_~s~0#1.base|) (+ 19 |c_ULTIMATE.start_cstrncpy_~s~0#1.offset|)) 0)) is different from false [2024-11-14 05:42:32,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:42:32,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 05:42:32,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:42:32,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 05:42:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 62 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 798 not checked. [2024-11-14 05:42:33,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280825208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:42:33,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1965389224] [2024-11-14 05:42:33,726 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 05:42:33,726 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:42:33,726 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:42:33,726 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:42:33,726 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:42:34,760 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:42:38,380 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33934#(and (= |ULTIMATE.start_cstrncpy_#t~post2#1.base| |ULTIMATE.start_cstrncpy_~d~0#1.base|) (= (+ 1 |ULTIMATE.start_cstrncpy_#t~post2#1.offset|) |ULTIMATE.start_cstrncpy_~d~0#1.offset|) (or (< |ULTIMATE.start_cstrncpy_~s~0#1.offset| 1) (< (select |#length| |ULTIMATE.start_cstrncpy_~s~0#1.base|) |ULTIMATE.start_cstrncpy_~s~0#1.offset|)))' at error location [2024-11-14 05:42:38,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:42:38,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:42:38,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 68, 68] total 150 [2024-11-14 05:42:38,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751262940] [2024-11-14 05:42:38,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:42:38,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2024-11-14 05:42:38,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:42:38,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2024-11-14 05:42:38,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=18108, Unknown=667, NotChecked=6174, Total=25440 [2024-11-14 05:42:38,382 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 151 states, 151 states have (on average 2.0860927152317883) internal successors, (315), 150 states have internal predecessors, (315), 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) [2024-11-14 05:42:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:42:58,210 INFO L93 Difference]: Finished difference Result 261 states and 262 transitions. [2024-11-14 05:42:58,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-14 05:42:58,211 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 2.0860927152317883) internal successors, (315), 150 states have internal predecessors, (315), 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 151 [2024-11-14 05:42:58,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:42:58,211 INFO L225 Difference]: With dead ends: 261 [2024-11-14 05:42:58,211 INFO L226 Difference]: Without dead ends: 155 [2024-11-14 05:42:58,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 380 SyntacticMatches, 21 SemanticMatches, 195 ConstructedPredicates, 21 IntricatePredicates, 0 DeprecatedPredicates, 6961 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=692, Invalid=29521, Unknown=671, NotChecked=7728, Total=38612 [2024-11-14 05:42:58,213 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 1 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 9429 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 12680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 9429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3231 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:42:58,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2839 Invalid, 12680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 9429 Invalid, 0 Unknown, 3231 Unchecked, 10.2s Time] [2024-11-14 05:42:58,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-14 05:42:58,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2024-11-14 05:42:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 153 states have internal predecessors, (155), 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) [2024-11-14 05:42:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2024-11-14 05:42:58,217 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 151 [2024-11-14 05:42:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:42:58,217 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2024-11-14 05:42:58,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 2.0860927152317883) internal successors, (315), 150 states have internal predecessors, (315), 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) [2024-11-14 05:42:58,218 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2024-11-14 05:42:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-14 05:42:58,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:42:58,219 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1] [2024-11-14 05:42:58,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-14 05:42:58,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:42:58,423 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-14 05:42:58,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:42:58,423 INFO L85 PathProgramCache]: Analyzing trace with hash 842060925, now seen corresponding path program 41 times [2024-11-14 05:42:58,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:42:58,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297458667] [2024-11-14 05:42:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:42:58,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:42:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:43:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1533 backedges. 361 proven. 1172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:43:02,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:43:02,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297458667] [2024-11-14 05:43:02,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297458667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:43:02,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9323214] [2024-11-14 05:43:02,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:43:02,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:43:02,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:43:02,181 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:43:02,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede4644a-2c4e-4cff-885c-c7e3960bd5e3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process