./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.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_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/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_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/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_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/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 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:59:58,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:59:58,875 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 03:59:58,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:59:58,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:59:58,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:59:58,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:59:58,921 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:59:58,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:59:58,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:59:58,922 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:59:58,923 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:59:58,923 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:59:58,923 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:59:58,924 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:59:58,924 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:59:58,924 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:59:58,924 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:59:58,924 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:59:58,924 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:59:58,924 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:59:58,924 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:59:58,925 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:59:58,925 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:59:58,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:59:58,926 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:59:58,926 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:59:58,926 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:59:58,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:59:58,926 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:59:58,926 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:59:58,926 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:59:58,926 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:59:58,926 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:59:58,926 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:59:58,927 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:59:58,927 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:59:58,927 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:59:58,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:59:58,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:59:58,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:59:58,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:59:58,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:59:58,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:59:58,927 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:59:58,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:59:58,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:59:58,927 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:59:58,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:59:58,928 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_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/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 -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2024-11-14 03:59:59,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:59:59,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:59:59,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:59:59,266 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:59:59,267 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:59:59,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i Unable to find full path for "g++" [2024-11-14 04:00:01,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:00:01,584 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:00:01,585 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2024-11-14 04:00:01,603 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/data/8d2101c33/a8033f71e93e4cc1828a92937beb823e/FLAG52677ff4c [2024-11-14 04:00:01,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/data/8d2101c33/a8033f71e93e4cc1828a92937beb823e [2024-11-14 04:00:01,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:00:01,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:00:01,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:00:01,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:00:01,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:00:01,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:00:01" (1/1) ... [2024-11-14 04:00:01,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427bdc93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:01, skipping insertion in model container [2024-11-14 04:00:01,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:00:01" (1/1) ... [2024-11-14 04:00:01,687 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:00:02,115 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 04:00:02,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:00:02,140 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:00:02,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:00:02,231 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:00:02,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02 WrapperNode [2024-11-14 04:00:02,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:00:02,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:00:02,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:00:02,234 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:00:02,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02" (1/1) ... [2024-11-14 04:00:02,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02" (1/1) ... [2024-11-14 04:00:02,288 INFO L138 Inliner]: procedures = 168, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 98 [2024-11-14 04:00:02,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:00:02,292 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:00:02,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:00:02,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:00:02,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02" (1/1) ... [2024-11-14 04:00:02,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02" (1/1) ... [2024-11-14 04:00:02,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02" (1/1) ... [2024-11-14 04:00:02,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02" (1/1) ... [2024-11-14 04:00:02,319 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02" (1/1) ... [2024-11-14 04:00:02,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02" (1/1) ... [2024-11-14 04:00:02,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02" (1/1) ... [2024-11-14 04:00:02,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02" (1/1) ... [2024-11-14 04:00:02,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:00:02,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:00:02,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:00:02,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:00:02,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02" (1/1) ... [2024-11-14 04:00:02,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:00:02,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:00:02,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:00:02,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:00:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:00:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2024-11-14 04:00:02,475 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2024-11-14 04:00:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:00:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:00:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 04:00:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:00:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 04:00:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:00:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:00:02,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:00:02,651 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:00:02,653 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:00:02,906 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-14 04:00:02,906 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:00:02,962 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:00:02,964 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:00:02,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:00:02 BoogieIcfgContainer [2024-11-14 04:00:02,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:00:02,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:00:02,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:00:02,974 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:00:02,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:00:01" (1/3) ... [2024-11-14 04:00:02,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419936b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:00:02, skipping insertion in model container [2024-11-14 04:00:02,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:00:02" (2/3) ... [2024-11-14 04:00:02,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419936b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:00:02, skipping insertion in model container [2024-11-14 04:00:02,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:00:02" (3/3) ... [2024-11-14 04:00:02,977 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2024-11-14 04:00:02,997 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:00:02,999 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG bftpd_1.i that has 2 procedures, 64 locations, 1 initial locations, 1 loop locations, and 23 error locations. [2024-11-14 04:00:03,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:00:03,074 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;@1da8399, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:00:03,074 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-14 04:00:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 59 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:00:03,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 04:00:03,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:03,087 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 04:00:03,088 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:03,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:03,093 INFO L85 PathProgramCache]: Analyzing trace with hash 137098440, now seen corresponding path program 1 times [2024-11-14 04:00:03,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:03,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438588207] [2024-11-14 04:00:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:03,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:03,476 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 04:00:03,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:03,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438588207] [2024-11-14 04:00:03,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438588207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:03,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:00:03,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:00:03,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682922806] [2024-11-14 04:00:03,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:03,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:00:03,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:03,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:00:03,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:00:03,520 INFO L87 Difference]: Start difference. First operand has 64 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 59 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:03,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:03,755 INFO L93 Difference]: Finished difference Result 128 states and 149 transitions. [2024-11-14 04:00:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:00:03,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 04:00:03,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:03,764 INFO L225 Difference]: With dead ends: 128 [2024-11-14 04:00:03,764 INFO L226 Difference]: Without dead ends: 125 [2024-11-14 04:00:03,766 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 04:00:03,769 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 109 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:03,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 116 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:00:03,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-14 04:00:03,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 92. [2024-11-14 04:00:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 62 states have (on average 1.6774193548387097) internal successors, (104), 82 states have internal predecessors, (104), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-14 04:00:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 122 transitions. [2024-11-14 04:00:03,815 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 122 transitions. Word has length 5 [2024-11-14 04:00:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:03,816 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 122 transitions. [2024-11-14 04:00:03,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 122 transitions. [2024-11-14 04:00:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 04:00:03,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:03,817 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 04:00:03,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:00:03,818 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:03,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:03,818 INFO L85 PathProgramCache]: Analyzing trace with hash 137098441, now seen corresponding path program 1 times [2024-11-14 04:00:03,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:03,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987295250] [2024-11-14 04:00:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:03,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:04,084 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 04:00:04,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:04,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987295250] [2024-11-14 04:00:04,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987295250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:04,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:00:04,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:00:04,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214216853] [2024-11-14 04:00:04,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:04,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:00:04,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:04,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:00:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:00:04,087 INFO L87 Difference]: Start difference. First operand 92 states and 122 transitions. Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:04,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:04,272 INFO L93 Difference]: Finished difference Result 190 states and 262 transitions. [2024-11-14 04:00:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:00:04,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 04:00:04,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:04,275 INFO L225 Difference]: With dead ends: 190 [2024-11-14 04:00:04,277 INFO L226 Difference]: Without dead ends: 190 [2024-11-14 04:00:04,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:00:04,279 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 151 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:04,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 144 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:00:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-14 04:00:04,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 164. [2024-11-14 04:00:04,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 126 states have (on average 1.6904761904761905) internal successors, (213), 146 states have internal predecessors, (213), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-14 04:00:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 258 transitions. [2024-11-14 04:00:04,309 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 258 transitions. Word has length 5 [2024-11-14 04:00:04,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:04,310 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 258 transitions. [2024-11-14 04:00:04,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:04,313 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 258 transitions. [2024-11-14 04:00:04,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 04:00:04,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:04,313 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 04:00:04,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:00:04,313 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:04,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:04,315 INFO L85 PathProgramCache]: Analyzing trace with hash -44915675, now seen corresponding path program 1 times [2024-11-14 04:00:04,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:04,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414746678] [2024-11-14 04:00:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:04,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:04,662 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 04:00:04,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:04,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414746678] [2024-11-14 04:00:04,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414746678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:04,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:00:04,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:00:04,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458772817] [2024-11-14 04:00:04,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:04,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:00:04,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:04,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:00:04,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:00:04,664 INFO L87 Difference]: Start difference. First operand 164 states and 258 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:04,856 INFO L93 Difference]: Finished difference Result 215 states and 313 transitions. [2024-11-14 04:00:04,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:00:04,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 04:00:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:04,859 INFO L225 Difference]: With dead ends: 215 [2024-11-14 04:00:04,859 INFO L226 Difference]: Without dead ends: 215 [2024-11-14 04:00:04,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:00:04,860 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 83 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:04,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 164 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:00:04,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-14 04:00:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 167. [2024-11-14 04:00:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 129 states have (on average 1.6744186046511629) internal successors, (216), 149 states have internal predecessors, (216), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-14 04:00:04,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 261 transitions. [2024-11-14 04:00:04,894 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 261 transitions. Word has length 6 [2024-11-14 04:00:04,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:04,894 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 261 transitions. [2024-11-14 04:00:04,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:04,894 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 261 transitions. [2024-11-14 04:00:04,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 04:00:04,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:04,895 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:00:04,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:00:04,895 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:04,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1392385880, now seen corresponding path program 1 times [2024-11-14 04:00:04,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:04,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899270532] [2024-11-14 04:00:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:04,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:05,224 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 04:00:05,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:05,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899270532] [2024-11-14 04:00:05,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899270532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:05,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:00:05,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:00:05,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180670048] [2024-11-14 04:00:05,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:05,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:00:05,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:05,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:00:05,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:00:05,226 INFO L87 Difference]: Start difference. First operand 167 states and 261 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:05,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:05,413 INFO L93 Difference]: Finished difference Result 192 states and 263 transitions. [2024-11-14 04:00:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:00:05,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 04:00:05,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:05,416 INFO L225 Difference]: With dead ends: 192 [2024-11-14 04:00:05,416 INFO L226 Difference]: Without dead ends: 192 [2024-11-14 04:00:05,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:00:05,417 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 68 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:05,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 206 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:00:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-14 04:00:05,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 167. [2024-11-14 04:00:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 129 states have (on average 1.6589147286821706) internal successors, (214), 149 states have internal predecessors, (214), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-14 04:00:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 259 transitions. [2024-11-14 04:00:05,448 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 259 transitions. Word has length 7 [2024-11-14 04:00:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:05,448 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 259 transitions. [2024-11-14 04:00:05,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 259 transitions. [2024-11-14 04:00:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 04:00:05,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:05,450 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:00:05,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:00:05,450 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:05,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash -214289273, now seen corresponding path program 1 times [2024-11-14 04:00:05,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:05,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646891438] [2024-11-14 04:00:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:05,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:05,561 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 04:00:05,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:05,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646891438] [2024-11-14 04:00:05,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646891438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:05,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:00:05,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:00:05,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712592137] [2024-11-14 04:00:05,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:05,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:00:05,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:05,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:00:05,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:00:05,563 INFO L87 Difference]: Start difference. First operand 167 states and 259 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:05,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:05,721 INFO L93 Difference]: Finished difference Result 260 states and 360 transitions. [2024-11-14 04:00:05,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:00:05,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 04:00:05,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:05,724 INFO L225 Difference]: With dead ends: 260 [2024-11-14 04:00:05,724 INFO L226 Difference]: Without dead ends: 260 [2024-11-14 04:00:05,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:00:05,725 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 142 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:05,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 195 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:00:05,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-14 04:00:05,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 199. [2024-11-14 04:00:05,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 159 states have (on average 1.628930817610063) internal successors, (259), 180 states have internal predecessors, (259), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-14 04:00:05,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 304 transitions. [2024-11-14 04:00:05,750 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 304 transitions. Word has length 8 [2024-11-14 04:00:05,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:05,750 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 304 transitions. [2024-11-14 04:00:05,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 304 transitions. [2024-11-14 04:00:05,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 04:00:05,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:05,751 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:00:05,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:00:05,751 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:05,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:05,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1946967178, now seen corresponding path program 1 times [2024-11-14 04:00:05,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:05,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820155347] [2024-11-14 04:00:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:05,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:05,886 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 04:00:05,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:05,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820155347] [2024-11-14 04:00:05,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820155347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:05,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:00:05,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:00:05,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583242647] [2024-11-14 04:00:05,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:05,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:00:05,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:05,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:00:05,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:00:05,889 INFO L87 Difference]: Start difference. First operand 199 states and 304 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:06,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:06,037 INFO L93 Difference]: Finished difference Result 247 states and 327 transitions. [2024-11-14 04:00:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:00:06,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-14 04:00:06,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:06,040 INFO L225 Difference]: With dead ends: 247 [2024-11-14 04:00:06,040 INFO L226 Difference]: Without dead ends: 247 [2024-11-14 04:00:06,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:00:06,041 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 179 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:06,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 203 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:00:06,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-14 04:00:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 213. [2024-11-14 04:00:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 172 states have (on average 1.627906976744186) internal successors, (280), 194 states have internal predecessors, (280), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-14 04:00:06,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 325 transitions. [2024-11-14 04:00:06,063 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 325 transitions. Word has length 9 [2024-11-14 04:00:06,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:06,063 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 325 transitions. [2024-11-14 04:00:06,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:06,064 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 325 transitions. [2024-11-14 04:00:06,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 04:00:06,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:06,064 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:00:06,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:00:06,064 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:06,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:06,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1504808304, now seen corresponding path program 1 times [2024-11-14 04:00:06,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:06,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874715908] [2024-11-14 04:00:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:06,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:06,266 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 04:00:06,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:06,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874715908] [2024-11-14 04:00:06,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874715908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:00:06,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079085561] [2024-11-14 04:00:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:06,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:00:06,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:00:06,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:00:06,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:00:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:06,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:00:06,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:00:06,631 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 04:00:06,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:00:06,809 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 04:00:06,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079085561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:00:06,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1463611509] [2024-11-14 04:00:06,829 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-14 04:00:06,830 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:00:06,833 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:00:06,838 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:00:06,838 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:00:07,106 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 135 for LOIs [2024-11-14 04:00:11,258 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:00:16,535 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2425#(and (= 3 |parse_input_~input#1.base|) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (= ~global~0.base 0) (= ~global~0.offset 0) (= |parse_input_#in~input#1.base| 3) (= |~#commands~0.offset| 0) (= ~state~0 0) (<= (select |#length| 6) 12) (= |old(~global~0.base)| 0) (= |parse_input_~input#1.offset| 0) (= |old(~state~0)| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(~global~0.offset)| 0))' at error location [2024-11-14 04:00:16,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:00:16,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:00:16,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 11 [2024-11-14 04:00:16,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956237432] [2024-11-14 04:00:16,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:00:16,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 04:00:16,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 04:00:16,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-14 04:00:16,537 INFO L87 Difference]: Start difference. First operand 213 states and 325 transitions. Second operand has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:16,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:16,777 INFO L93 Difference]: Finished difference Result 239 states and 324 transitions. [2024-11-14 04:00:16,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:00:16,777 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 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 04:00:16,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:16,779 INFO L225 Difference]: With dead ends: 239 [2024-11-14 04:00:16,779 INFO L226 Difference]: Without dead ends: 239 [2024-11-14 04:00:16,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2024-11-14 04:00:16,780 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 244 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:16,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 387 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:00:16,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-14 04:00:16,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 216. [2024-11-14 04:00:16,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 175 states have (on average 1.5657142857142856) internal successors, (274), 197 states have internal predecessors, (274), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-14 04:00:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 319 transitions. [2024-11-14 04:00:16,792 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 319 transitions. Word has length 13 [2024-11-14 04:00:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:16,792 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 319 transitions. [2024-11-14 04:00:16,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 319 transitions. [2024-11-14 04:00:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 04:00:16,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:16,793 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:00:16,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:00:16,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 04:00:16,993 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:16,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:16,994 INFO L85 PathProgramCache]: Analyzing trace with hash 595582782, now seen corresponding path program 1 times [2024-11-14 04:00:16,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:16,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996316718] [2024-11-14 04:00:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:16,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:17,172 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 04:00:17,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:17,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996316718] [2024-11-14 04:00:17,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996316718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:00:17,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166512023] [2024-11-14 04:00:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:17,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:00:17,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:00:17,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:00:17,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:00:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:17,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:00:17,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:00:17,407 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 04:00:17,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:00:17,479 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 04:00:17,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166512023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:00:17,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [610088433] [2024-11-14 04:00:17,481 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-14 04:00:17,482 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:00:17,482 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:00:17,482 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:00:17,482 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:00:17,562 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 135 for LOIs [2024-11-14 04:00:20,218 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:00:25,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [610088433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:25,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:00:25,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 4, 4] total 17 [2024-11-14 04:00:25,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160518067] [2024-11-14 04:00:25,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:25,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:00:25,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:25,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:00:25,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2024-11-14 04:00:25,170 INFO L87 Difference]: Start difference. First operand 216 states and 319 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:25,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:25,597 INFO L93 Difference]: Finished difference Result 210 states and 301 transitions. [2024-11-14 04:00:25,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:00:25,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 04:00:25,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:25,599 INFO L225 Difference]: With dead ends: 210 [2024-11-14 04:00:25,599 INFO L226 Difference]: Without dead ends: 210 [2024-11-14 04:00:25,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2024-11-14 04:00:25,600 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 21 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:25,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 88 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 153 Invalid, 1 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:00:25,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-14 04:00:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2024-11-14 04:00:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 169 states have (on average 1.514792899408284) internal successors, (256), 191 states have internal predecessors, (256), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-14 04:00:25,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 301 transitions. [2024-11-14 04:00:25,611 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 301 transitions. Word has length 14 [2024-11-14 04:00:25,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:25,611 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 301 transitions. [2024-11-14 04:00:25,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:25,611 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 301 transitions. [2024-11-14 04:00:25,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 04:00:25,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:25,612 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:00:25,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:00:25,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:00:25,812 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:25,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1522592729, now seen corresponding path program 1 times [2024-11-14 04:00:25,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:25,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164131637] [2024-11-14 04:00:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:25,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:25,948 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 04:00:25,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:25,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164131637] [2024-11-14 04:00:25,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164131637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:25,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:00:25,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:00:25,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038105277] [2024-11-14 04:00:25,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:25,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:00:25,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:25,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:00:25,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:00:25,950 INFO L87 Difference]: Start difference. First operand 210 states and 301 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:26,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:26,024 INFO L93 Difference]: Finished difference Result 275 states and 381 transitions. [2024-11-14 04:00:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:00:26,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-14 04:00:26,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:26,029 INFO L225 Difference]: With dead ends: 275 [2024-11-14 04:00:26,029 INFO L226 Difference]: Without dead ends: 275 [2024-11-14 04:00:26,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:00:26,030 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 31 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:26,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 104 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:00:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-14 04:00:26,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 263. [2024-11-14 04:00:26,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 215 states have (on average 1.4930232558139536) internal successors, (321), 238 states have internal predecessors, (321), 14 states have call successors, (14), 10 states have call predecessors, (14), 13 states have return successors, (44), 14 states have call predecessors, (44), 14 states have call successors, (44) [2024-11-14 04:00:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 379 transitions. [2024-11-14 04:00:26,071 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 379 transitions. Word has length 17 [2024-11-14 04:00:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:26,071 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 379 transitions. [2024-11-14 04:00:26,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:00:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 379 transitions. [2024-11-14 04:00:26,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 04:00:26,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:26,079 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:00:26,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 04:00:26,080 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:26,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:26,080 INFO L85 PathProgramCache]: Analyzing trace with hash -930123830, now seen corresponding path program 1 times [2024-11-14 04:00:26,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:26,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078603081] [2024-11-14 04:00:26,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:26,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:00:26,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:26,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078603081] [2024-11-14 04:00:26,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078603081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:26,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:00:26,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:00:26,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006074632] [2024-11-14 04:00:26,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:26,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:00:26,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:26,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:00:26,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:00:26,141 INFO L87 Difference]: Start difference. First operand 263 states and 379 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:00:26,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:26,155 INFO L93 Difference]: Finished difference Result 207 states and 277 transitions. [2024-11-14 04:00:26,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:00:26,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-14 04:00:26,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:26,157 INFO L225 Difference]: With dead ends: 207 [2024-11-14 04:00:26,157 INFO L226 Difference]: Without dead ends: 207 [2024-11-14 04:00:26,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:00:26,158 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 9 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:26,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 116 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:00:26,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-14 04:00:26,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-14 04:00:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 167 states have (on average 1.4431137724550898) internal successors, (241), 189 states have internal predecessors, (241), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2024-11-14 04:00:26,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 277 transitions. [2024-11-14 04:00:26,167 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 277 transitions. Word has length 23 [2024-11-14 04:00:26,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:26,167 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 277 transitions. [2024-11-14 04:00:26,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:00:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 277 transitions. [2024-11-14 04:00:26,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 04:00:26,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:26,168 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:00:26,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 04:00:26,168 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:26,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1021137934, now seen corresponding path program 1 times [2024-11-14 04:00:26,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:26,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060583363] [2024-11-14 04:00:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:26,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:26,450 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 04:00:26,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:26,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060583363] [2024-11-14 04:00:26,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060583363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:00:26,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90341692] [2024-11-14 04:00:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:26,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:00:26,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:00:26,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:00:26,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:00:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:26,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 04:00:26,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:00:26,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:00:26,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:00:26,858 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 04:00:26,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:00:26,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90341692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:00:26,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [936688726] [2024-11-14 04:00:26,999 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 04:00:27,000 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:00:27,000 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:00:27,000 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:00:27,000 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:00:27,492 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-14 04:00:29,128 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:00:40,993 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4471#(and (= ~global~0.base |old(~global~0.base)|) (= |old(#length)| |#length|) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= (select |#length| 6) 3) (= |parse_input_~input#1.base| 4) (= ~global~0.offset 0) (= |parse_input_#in~input#1.base| 4) (= |~#commands~0.offset| 0) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(#valid)| |#valid|) (= |old(~global~0.offset)| 0))' at error location [2024-11-14 04:00:40,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:00:40,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:00:40,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2024-11-14 04:00:40,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829269913] [2024-11-14 04:00:40,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:00:40,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 04:00:40,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:40,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 04:00:40,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=852, Unknown=1, NotChecked=0, Total=1056 [2024-11-14 04:00:40,995 INFO L87 Difference]: Start difference. First operand 207 states and 277 transitions. Second operand has 14 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:00:41,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:41,531 INFO L93 Difference]: Finished difference Result 243 states and 321 transitions. [2024-11-14 04:00:41,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 04:00:41,532 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-14 04:00:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:41,534 INFO L225 Difference]: With dead ends: 243 [2024-11-14 04:00:41,534 INFO L226 Difference]: Without dead ends: 243 [2024-11-14 04:00:41,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=334, Invalid=1471, Unknown=1, NotChecked=0, Total=1806 [2024-11-14 04:00:41,535 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 378 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:41,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 198 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:00:41,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-14 04:00:41,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 228. [2024-11-14 04:00:41,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 186 states have (on average 1.4408602150537635) internal successors, (268), 210 states have internal predecessors, (268), 10 states have call successors, (10), 7 states have call predecessors, (10), 11 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-14 04:00:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 308 transitions. [2024-11-14 04:00:41,552 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 308 transitions. Word has length 25 [2024-11-14 04:00:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:41,553 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 308 transitions. [2024-11-14 04:00:41,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:00:41,557 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 308 transitions. [2024-11-14 04:00:41,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 04:00:41,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:41,561 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:00:41,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:00:41,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:00:41,765 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:41,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:41,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1395484383, now seen corresponding path program 1 times [2024-11-14 04:00:41,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:41,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22857262] [2024-11-14 04:00:41,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:41,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:41,937 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 04:00:41,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:41,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22857262] [2024-11-14 04:00:41,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22857262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:00:41,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535346872] [2024-11-14 04:00:41,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:41,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:00:41,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:00:41,939 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:00:41,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:00:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:42,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:00:42,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:00:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:00:42,115 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:00:42,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535346872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:42,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:00:42,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-11-14 04:00:42,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666620064] [2024-11-14 04:00:42,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:42,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:00:42,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:42,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:00:42,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:00:42,117 INFO L87 Difference]: Start difference. First operand 228 states and 308 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:00:42,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:42,174 INFO L93 Difference]: Finished difference Result 242 states and 318 transitions. [2024-11-14 04:00:42,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:00:42,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-14 04:00:42,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:42,177 INFO L225 Difference]: With dead ends: 242 [2024-11-14 04:00:42,178 INFO L226 Difference]: Without dead ends: 242 [2024-11-14 04:00:42,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:00:42,178 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 73 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:42,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 155 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:00:42,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-14 04:00:42,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 236. [2024-11-14 04:00:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 194 states have (on average 1.422680412371134) internal successors, (276), 218 states have internal predecessors, (276), 10 states have call successors, (10), 7 states have call predecessors, (10), 11 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-14 04:00:42,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 316 transitions. [2024-11-14 04:00:42,194 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 316 transitions. Word has length 26 [2024-11-14 04:00:42,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:42,194 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 316 transitions. [2024-11-14 04:00:42,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:00:42,194 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 316 transitions. [2024-11-14 04:00:42,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 04:00:42,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:42,195 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:00:42,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 04:00:42,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:00:42,395 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:42,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:42,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2061009581, now seen corresponding path program 1 times [2024-11-14 04:00:42,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:42,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824532428] [2024-11-14 04:00:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:42,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:00:42,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824532428] [2024-11-14 04:00:42,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824532428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:00:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345485075] [2024-11-14 04:00:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:42,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:00:42,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:00:42,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:00:42,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:00:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:43,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 04:00:43,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:00:43,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:00:43,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:00:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:00:43,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:00:43,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345485075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:00:43,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1033775993] [2024-11-14 04:00:43,584 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 04:00:43,584 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:00:43,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:00:43,584 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:00:43,585 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:00:43,958 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-14 04:00:45,291 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:00:57,137 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5660#(and (<= 4 (select |#length| 6)) (= ~global~0.base |old(~global~0.base)|) (= |old(#length)| |#length|) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= |parse_input_~input#1.base| 4) (= ~global~0.offset 0) (= |parse_input_#in~input#1.base| 4) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (or (< (select |#length| (select (select |#memory_$Pointer$.base| 6) 0)) (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1)) (< (select (select |#memory_$Pointer$.offset| 6) 0) 0)) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(#valid)| |#valid|) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0))' at error location [2024-11-14 04:00:57,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:00:57,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:00:57,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 17 [2024-11-14 04:00:57,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958660760] [2024-11-14 04:00:57,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:00:57,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 04:00:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:57,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 04:00:57,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 04:00:57,139 INFO L87 Difference]: Start difference. First operand 236 states and 316 transitions. Second operand has 18 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:00:57,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:57,653 INFO L93 Difference]: Finished difference Result 249 states and 326 transitions. [2024-11-14 04:00:57,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:00:57,653 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-14 04:00:57,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:57,655 INFO L225 Difference]: With dead ends: 249 [2024-11-14 04:00:57,655 INFO L226 Difference]: Without dead ends: 249 [2024-11-14 04:00:57,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=350, Invalid=1630, Unknown=0, NotChecked=0, Total=1980 [2024-11-14 04:00:57,656 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 172 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:57,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 246 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:00:57,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-14 04:00:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 238. [2024-11-14 04:00:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 196 states have (on average 1.4081632653061225) internal successors, (276), 220 states have internal predecessors, (276), 10 states have call successors, (10), 7 states have call predecessors, (10), 11 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-14 04:00:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 316 transitions. [2024-11-14 04:00:57,665 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 316 transitions. Word has length 27 [2024-11-14 04:00:57,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:57,665 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 316 transitions. [2024-11-14 04:00:57,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:00:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 316 transitions. [2024-11-14 04:00:57,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 04:00:57,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:57,666 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:00:57,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 04:00:57,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:00:57,870 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:00:57,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash -533212382, now seen corresponding path program 1 times [2024-11-14 04:00:57,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:57,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546864421] [2024-11-14 04:00:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:57,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:00:58,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546864421] [2024-11-14 04:00:58,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546864421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:00:58,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220424976] [2024-11-14 04:00:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:58,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:00:58,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:00:58,040 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:00:58,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 04:00:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:58,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 04:00:58,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:00:58,216 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 04:00:58,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-14 04:00:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:00:58,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:00:58,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220424976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:00:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [967280227] [2024-11-14 04:00:58,325 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 04:00:58,325 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:00:58,325 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:00:58,325 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:00:58,325 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:00:58,704 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-14 04:01:00,206 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:01:11,820 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6298#(and (<= 4 (select |#length| 6)) (= ~global~0.base |old(~global~0.base)|) (= |old(#length)| |#length|) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= ~global~0.offset 0) (= |parse_input_#in~input#1.base| 4) (not (= (select |#valid| 4) 1)) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(#valid)| |#valid|) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0))' at error location [2024-11-14 04:01:11,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:01:11,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:01:11,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2024-11-14 04:01:11,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444840253] [2024-11-14 04:01:11,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:01:11,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 04:01:11,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:01:11,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 04:01:11,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2024-11-14 04:01:11,822 INFO L87 Difference]: Start difference. First operand 238 states and 316 transitions. Second operand has 12 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:01:12,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:01:12,291 INFO L93 Difference]: Finished difference Result 364 states and 448 transitions. [2024-11-14 04:01:12,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 04:01:12,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-11-14 04:01:12,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:01:12,294 INFO L225 Difference]: With dead ends: 364 [2024-11-14 04:01:12,294 INFO L226 Difference]: Without dead ends: 364 [2024-11-14 04:01:12,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=298, Invalid=1108, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 04:01:12,295 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 536 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:01:12,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 338 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:01:12,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-14 04:01:12,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 301. [2024-11-14 04:01:12,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 256 states have (on average 1.390625) internal successors, (356), 281 states have internal predecessors, (356), 10 states have call successors, (10), 9 states have call predecessors, (10), 14 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-14 04:01:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 396 transitions. [2024-11-14 04:01:12,306 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 396 transitions. Word has length 28 [2024-11-14 04:01:12,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:01:12,306 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 396 transitions. [2024-11-14 04:01:12,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:01:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 396 transitions. [2024-11-14 04:01:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 04:01:12,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:01:12,307 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:01:12,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 04:01:12,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-14 04:01:12,511 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:01:12,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:01:12,511 INFO L85 PathProgramCache]: Analyzing trace with hash 650285391, now seen corresponding path program 1 times [2024-11-14 04:01:12,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:01:12,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356433631] [2024-11-14 04:01:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:12,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:01:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:01:12,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:01:12,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356433631] [2024-11-14 04:01:12,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356433631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:12,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202220365] [2024-11-14 04:01:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:12,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:12,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:01:12,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:01:12,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 04:01:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:12,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 04:01:12,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:01:12,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:01:12,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:01:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:01:13,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:01:13,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202220365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:13,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [296716340] [2024-11-14 04:01:13,139 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 04:01:13,139 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:01:13,140 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:01:13,140 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:01:13,140 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:01:13,523 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-14 04:01:14,847 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:01:25,787 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7127#(and (<= 4 (select |#length| 6)) (= ~global~0.base |old(~global~0.base)|) (= |old(#length)| |#length|) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= (select |#length| 4) 0) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= ~global~0.offset 0) (= (select |#valid| 4) 1) (= |parse_input_#in~input#1.base| 4) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (= |old(~state~0)| 1) (= |parse_input_#in~input#1.offset| 0) (= |old(#valid)| |#valid|) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0))' at error location [2024-11-14 04:01:25,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:01:25,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:01:25,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2024-11-14 04:01:25,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977024622] [2024-11-14 04:01:25,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:01:25,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 04:01:25,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:01:25,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 04:01:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=988, Unknown=2, NotChecked=0, Total=1190 [2024-11-14 04:01:25,789 INFO L87 Difference]: Start difference. First operand 301 states and 396 transitions. Second operand has 15 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:01:26,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:01:26,551 INFO L93 Difference]: Finished difference Result 485 states and 594 transitions. [2024-11-14 04:01:26,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 04:01:26,551 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-14 04:01:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:01:26,554 INFO L225 Difference]: With dead ends: 485 [2024-11-14 04:01:26,554 INFO L226 Difference]: Without dead ends: 485 [2024-11-14 04:01:26,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=452, Invalid=2198, Unknown=2, NotChecked=0, Total=2652 [2024-11-14 04:01:26,556 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 666 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:01:26,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 385 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:01:26,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-11-14 04:01:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 360. [2024-11-14 04:01:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 313 states have (on average 1.3961661341853036) internal successors, (437), 343 states have internal predecessors, (437), 8 states have call successors, (8), 8 states have call predecessors, (8), 18 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-14 04:01:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 469 transitions. [2024-11-14 04:01:26,571 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 469 transitions. Word has length 29 [2024-11-14 04:01:26,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:01:26,572 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 469 transitions. [2024-11-14 04:01:26,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:01:26,572 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 469 transitions. [2024-11-14 04:01:26,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 04:01:26,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:01:26,576 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:01:26,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 04:01:26,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-14 04:01:26,780 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:01:26,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:01:26,781 INFO L85 PathProgramCache]: Analyzing trace with hash -173884203, now seen corresponding path program 1 times [2024-11-14 04:01:26,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:01:26,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703837701] [2024-11-14 04:01:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:26,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:01:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:01:27,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:01:27,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703837701] [2024-11-14 04:01:27,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703837701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:27,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715113262] [2024-11-14 04:01:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:27,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:27,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:01:27,043 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:01:27,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 04:01:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:27,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 04:01:27,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:01:27,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:01:27,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:01:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:01:27,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:01:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715113262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [392421698] [2024-11-14 04:01:27,707 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-14 04:01:27,707 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:01:27,707 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:01:27,707 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:01:27,707 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:01:28,618 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 27 for LOIs [2024-11-14 04:01:29,195 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:01:33,623 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8178#(and (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= 3 |parse_input_~input#1.base|) (<= |old(~state~0)| 1) (<= 0 ~state~0) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= 0 |old(~state~0)|) (<= |parse_input_#in~input#1.base| 4) (<= (select |#length| 6) 12) (<= ~state~0 1) (<= |parse_input_~input#1.base| 4) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (= |old(~global~0.offset)| 0))' at error location [2024-11-14 04:01:33,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:01:33,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:01:33,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2024-11-14 04:01:33,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436659228] [2024-11-14 04:01:33,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:01:33,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 04:01:33,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:01:33,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 04:01:33,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 04:01:33,625 INFO L87 Difference]: Start difference. First operand 360 states and 469 transitions. Second operand has 17 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:01:34,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:01:34,242 INFO L93 Difference]: Finished difference Result 375 states and 475 transitions. [2024-11-14 04:01:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:01:34,243 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2024-11-14 04:01:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:01:34,245 INFO L225 Difference]: With dead ends: 375 [2024-11-14 04:01:34,245 INFO L226 Difference]: Without dead ends: 375 [2024-11-14 04:01:34,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=323, Invalid=2127, Unknown=0, NotChecked=0, Total=2450 [2024-11-14 04:01:34,246 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 471 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:01:34,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 304 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:01:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-14 04:01:34,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 363. [2024-11-14 04:01:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 319 states have (on average 1.3605015673981191) internal successors, (434), 346 states have internal predecessors, (434), 8 states have call successors, (8), 8 states have call predecessors, (8), 18 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-14 04:01:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 466 transitions. [2024-11-14 04:01:34,257 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 466 transitions. Word has length 33 [2024-11-14 04:01:34,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:01:34,257 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 466 transitions. [2024-11-14 04:01:34,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:01:34,257 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 466 transitions. [2024-11-14 04:01:34,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 04:01:34,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:01:34,258 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:01:34,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 04:01:34,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 04:01:34,459 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:01:34,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:01:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1095443047, now seen corresponding path program 1 times [2024-11-14 04:01:34,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:01:34,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833707738] [2024-11-14 04:01:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:34,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:01:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:01:34,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:01:34,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833707738] [2024-11-14 04:01:34,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833707738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:34,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34546147] [2024-11-14 04:01:34,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:34,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:34,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:01:34,738 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:01:34,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 04:01:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:34,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 04:01:34,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:01:35,059 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 04:01:35,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-14 04:01:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:01:35,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:01:35,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34546147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:35,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1351413831] [2024-11-14 04:01:35,340 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-14 04:01:35,340 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:01:35,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:01:35,340 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:01:35,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:01:36,406 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 27 for LOIs [2024-11-14 04:01:36,875 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:01:41,239 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9118#(and (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= |old(~state~0)| 1) (<= 0 ~state~0) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= 0 |old(~state~0)|) (<= |parse_input_#in~input#1.base| 4) (<= ~state~0 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (= |old(~global~0.offset)| 0) (exists ((|v_parse_input_#t~mem2#1.base_73| Int)) (and (or (and (<= 4 (select |#length| 6)) (= (select (select |#memory_$Pointer$.offset| 6) 0) |parse_input_#t~mem2#1.offset|) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= |parse_input_~i~0#1| 0) (= (select (select |#memory_$Pointer$.base| 6) 0) |v_parse_input_#t~mem2#1.base_73|) (= (select |#valid| 6) 1)) (and (= (select |#valid| |parse_input_~input#1.base|) 1) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (= |parse_input_#t~mem2#1.offset| (select (select |#memory_$Pointer$.offset| 6) 9)) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (<= 13 (select |#length| 6)) (= (select (select |#memory_$Pointer$.base| 6) 9) |v_parse_input_#t~mem2#1.base_73|) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= |parse_input_~i~0#1| 1) (<= 1 (select |#length| |parse_input_~input#1.base|)) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1))) (not (= (select |#valid| |v_parse_input_#t~mem2#1.base_73|) 1)))))' at error location [2024-11-14 04:01:41,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:01:41,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:01:41,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2024-11-14 04:01:41,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712354347] [2024-11-14 04:01:41,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:01:41,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 04:01:41,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:01:41,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 04:01:41,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1171, Unknown=1, NotChecked=0, Total=1332 [2024-11-14 04:01:41,241 INFO L87 Difference]: Start difference. First operand 363 states and 466 transitions. Second operand has 17 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:01:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:01:41,773 INFO L93 Difference]: Finished difference Result 468 states and 592 transitions. [2024-11-14 04:01:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 04:01:41,774 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-11-14 04:01:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:01:41,776 INFO L225 Difference]: With dead ends: 468 [2024-11-14 04:01:41,776 INFO L226 Difference]: Without dead ends: 468 [2024-11-14 04:01:41,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=264, Invalid=1715, Unknown=1, NotChecked=0, Total=1980 [2024-11-14 04:01:41,779 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 311 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:01:41,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 442 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:01:41,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-14 04:01:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 432. [2024-11-14 04:01:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 382 states have (on average 1.350785340314136) internal successors, (516), 411 states have internal predecessors, (516), 10 states have call successors, (10), 10 states have call predecessors, (10), 22 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-14 04:01:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 558 transitions. [2024-11-14 04:01:41,791 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 558 transitions. Word has length 34 [2024-11-14 04:01:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:01:41,793 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 558 transitions. [2024-11-14 04:01:41,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:01:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 558 transitions. [2024-11-14 04:01:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 04:01:41,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:01:41,794 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:01:41,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-14 04:01:41,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-14 04:01:41,998 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:01:41,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:01:41,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1979993530, now seen corresponding path program 1 times [2024-11-14 04:01:41,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:01:41,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065562657] [2024-11-14 04:01:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:41,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:01:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:42,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 04:01:42,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:01:42,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065562657] [2024-11-14 04:01:42,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065562657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:42,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435373243] [2024-11-14 04:01:42,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:42,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:42,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:01:42,137 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:01:42,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 04:01:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:42,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:01:42,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:01:42,416 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 04:01:42,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 14 treesize of output 13 [2024-11-14 04:01:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:01:42,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:01:42,523 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 24 treesize of output 20 [2024-11-14 04:01:42,701 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 24 treesize of output 20 [2024-11-14 04:01:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:01:42,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435373243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:01:42,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2106042989] [2024-11-14 04:01:42,728 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 04:01:42,729 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:01:42,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:01:42,729 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:01:42,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:01:43,495 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 33 for LOIs [2024-11-14 04:01:43,648 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:01:46,490 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10264#(and (<= |parse_input_~i~0#1| 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (not (= (select |#valid| 6) 1)) (<= 3 |parse_input_~input#1.base|) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= |parse_input_#in~input#1.base| 4) (<= |parse_input_~input#1.base| 4) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (= |old(~global~0.offset)| 0) (<= 0 |parse_input_~i~0#1|))' at error location [2024-11-14 04:01:46,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:01:46,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:01:46,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2024-11-14 04:01:46,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666292093] [2024-11-14 04:01:46,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:01:46,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 04:01:46,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:01:46,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 04:01:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2024-11-14 04:01:46,492 INFO L87 Difference]: Start difference. First operand 432 states and 558 transitions. Second operand has 15 states, 10 states have (on average 7.6) internal successors, (76), 13 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:01:46,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:01:46,974 INFO L93 Difference]: Finished difference Result 501 states and 610 transitions. [2024-11-14 04:01:46,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 04:01:46,974 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 7.6) internal successors, (76), 13 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2024-11-14 04:01:46,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:01:46,976 INFO L225 Difference]: With dead ends: 501 [2024-11-14 04:01:46,976 INFO L226 Difference]: Without dead ends: 501 [2024-11-14 04:01:46,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=233, Invalid=1327, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 04:01:46,977 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 258 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:01:46,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 269 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:01:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2024-11-14 04:01:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 438. [2024-11-14 04:01:46,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 390 states have (on average 1.3641025641025641) internal successors, (532), 417 states have internal predecessors, (532), 10 states have call successors, (10), 10 states have call predecessors, (10), 20 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2024-11-14 04:01:46,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 569 transitions. [2024-11-14 04:01:46,991 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 569 transitions. Word has length 34 [2024-11-14 04:01:46,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:01:46,991 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 569 transitions. [2024-11-14 04:01:46,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 7.6) internal successors, (76), 13 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:01:46,991 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 569 transitions. [2024-11-14 04:01:46,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 04:01:46,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:01:46,992 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:01:47,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 04:01:47,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 04:01:47,193 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:01:47,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:01:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash 401003956, now seen corresponding path program 1 times [2024-11-14 04:01:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:01:47,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890255876] [2024-11-14 04:01:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:01:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:01:47,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:01:47,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890255876] [2024-11-14 04:01:47,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890255876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:47,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776265325] [2024-11-14 04:01:47,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:47,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:47,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:01:47,537 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:01:47,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 04:01:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:47,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 04:01:47,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:01:47,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:01:47,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:01:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:01:48,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:01:48,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776265325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:48,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [570918462] [2024-11-14 04:01:48,455 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-14 04:01:48,455 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:01:48,455 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:01:48,456 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:01:48,456 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:01:49,514 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 27 for LOIs [2024-11-14 04:01:50,049 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:01:55,008 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11406#(and (exists ((|v_parse_input_#t~mem2#1.base_103| Int) (|v_parse_input_#t~mem2#1.offset_99| Int)) (and (or (and (<= 4 (select |#length| 6)) (= |v_parse_input_#t~mem2#1.base_103| (select (select |#memory_$Pointer$.base| 6) 0)) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= (select (select |#memory_$Pointer$.offset| 6) 0) |v_parse_input_#t~mem2#1.offset_99|) (= |parse_input_~i~0#1| 0) (= (select |#valid| 6) 1)) (and (= (select |#valid| |parse_input_~input#1.base|) 1) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (<= 13 (select |#length| 6)) (= |v_parse_input_#t~mem2#1.base_103| (select (select |#memory_$Pointer$.base| 6) 9)) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= |parse_input_~i~0#1| 1) (<= 1 (select |#length| |parse_input_~input#1.base|)) (= |v_parse_input_#t~mem2#1.offset_99| (select (select |#memory_$Pointer$.offset| 6) 9)) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1))) (or (< (select |#length| |v_parse_input_#t~mem2#1.base_103|) (+ |v_parse_input_#t~mem2#1.offset_99| 1)) (< |v_parse_input_#t~mem2#1.offset_99| 0)) (= (select |#valid| |v_parse_input_#t~mem2#1.base_103|) 1))) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= |old(~state~0)| 1) (<= 0 ~state~0) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= 0 |old(~state~0)|) (<= |parse_input_#in~input#1.base| 4) (<= ~state~0 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (= |old(~global~0.offset)| 0))' at error location [2024-11-14 04:01:55,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:01:55,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:01:55,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2024-11-14 04:01:55,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97654238] [2024-11-14 04:01:55,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:01:55,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 04:01:55,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:01:55,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 04:01:55,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1402, Unknown=1, NotChecked=0, Total=1560 [2024-11-14 04:01:55,010 INFO L87 Difference]: Start difference. First operand 438 states and 569 transitions. Second operand has 18 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:01:56,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:01:56,118 INFO L93 Difference]: Finished difference Result 569 states and 695 transitions. [2024-11-14 04:01:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-14 04:01:56,119 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-11-14 04:01:56,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:01:56,120 INFO L225 Difference]: With dead ends: 569 [2024-11-14 04:01:56,120 INFO L226 Difference]: Without dead ends: 569 [2024-11-14 04:01:56,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=397, Invalid=2794, Unknown=1, NotChecked=0, Total=3192 [2024-11-14 04:01:56,122 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 518 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:01:56,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 456 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:01:56,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-14 04:01:56,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 430. [2024-11-14 04:01:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 385 states have (on average 1.3558441558441559) internal successors, (522), 411 states have internal predecessors, (522), 9 states have call successors, (9), 9 states have call predecessors, (9), 18 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-14 04:01:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 553 transitions. [2024-11-14 04:01:56,134 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 553 transitions. Word has length 35 [2024-11-14 04:01:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:01:56,135 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 553 transitions. [2024-11-14 04:01:56,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:01:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 553 transitions. [2024-11-14 04:01:56,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 04:01:56,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:01:56,136 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:01:56,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 04:01:56,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:56,339 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:01:56,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:01:56,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1250257267, now seen corresponding path program 1 times [2024-11-14 04:01:56,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:01:56,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477830896] [2024-11-14 04:01:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:56,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:01:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:01:56,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:01:56,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477830896] [2024-11-14 04:01:56,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477830896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:56,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210954548] [2024-11-14 04:01:56,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:56,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:56,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:01:56,869 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:01:56,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 04:01:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:56,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:01:56,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:01:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:01:57,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:01:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:01:57,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210954548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:01:57,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [737294408] [2024-11-14 04:01:57,547 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 04:01:57,547 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:01:57,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:01:57,547 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:01:57,547 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:01:58,262 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 21 for LOIs [2024-11-14 04:01:58,628 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:02:03,739 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12685#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_parse_input_#t~mem2#1.base_121| Int)) (and (not (= (select |#valid| |v_parse_input_#t~mem2#1.base_121|) 1)) (or (and (<= 4 (select |#length| 6)) (= (select (select |#memory_$Pointer$.offset| 6) 0) |parse_input_#t~mem2#1.offset|) (= |v_parse_input_#t~mem2#1.base_121| (select (select |#memory_$Pointer$.base| 6) 0)) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= |parse_input_~i~0#1| 0) (= (select |#valid| 6) 1)) (and (= (select |#valid| |parse_input_~input#1.base|) 1) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (= |parse_input_#t~mem2#1.offset| (select (select |#memory_$Pointer$.offset| 6) 9)) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (<= 13 (select |#length| 6)) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= |parse_input_~i~0#1| 1) (<= 1 (select |#length| |parse_input_~input#1.base|)) (= |v_parse_input_#t~mem2#1.base_121| (select (select |#memory_$Pointer$.base| 6) 9)) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1))))) (= 6 |~#commands~0.base|) (<= 3 |parse_input_~input#1.base|) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= |parse_input_~input#1.base| 4) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(~global~0.offset)| 0))' at error location [2024-11-14 04:02:03,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:02:03,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:02:03,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 24 [2024-11-14 04:02:03,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942773622] [2024-11-14 04:02:03,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:02:03,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 04:02:03,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:02:03,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 04:02:03,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2024-11-14 04:02:03,741 INFO L87 Difference]: Start difference. First operand 430 states and 553 transitions. Second operand has 25 states, 22 states have (on average 4.181818181818182) internal successors, (92), 20 states have internal predecessors, (92), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:02:05,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:02:05,835 INFO L93 Difference]: Finished difference Result 711 states and 864 transitions. [2024-11-14 04:02:05,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-14 04:02:05,835 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.181818181818182) internal successors, (92), 20 states have internal predecessors, (92), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2024-11-14 04:02:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:02:05,838 INFO L225 Difference]: With dead ends: 711 [2024-11-14 04:02:05,838 INFO L226 Difference]: Without dead ends: 711 [2024-11-14 04:02:05,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1660 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=669, Invalid=4881, Unknown=0, NotChecked=0, Total=5550 [2024-11-14 04:02:05,840 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 1007 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:02:05,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 746 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 04:02:05,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-11-14 04:02:05,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 493. [2024-11-14 04:02:05,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 448 states have (on average 1.3370535714285714) internal successors, (599), 474 states have internal predecessors, (599), 9 states have call successors, (9), 9 states have call predecessors, (9), 18 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-14 04:02:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 630 transitions. [2024-11-14 04:02:05,854 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 630 transitions. Word has length 35 [2024-11-14 04:02:05,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:02:05,854 INFO L471 AbstractCegarLoop]: Abstraction has 493 states and 630 transitions. [2024-11-14 04:02:05,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.181818181818182) internal successors, (92), 20 states have internal predecessors, (92), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:02:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 630 transitions. [2024-11-14 04:02:05,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-14 04:02:05,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:02:05,855 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:02:05,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 04:02:06,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-14 04:02:06,059 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:02:06,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:02:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1093317612, now seen corresponding path program 1 times [2024-11-14 04:02:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:02:06,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559093097] [2024-11-14 04:02:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:06,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:02:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:06,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:02:06,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:02:06,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559093097] [2024-11-14 04:02:06,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559093097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:02:06,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902268164] [2024-11-14 04:02:06,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:06,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:02:06,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:02:06,113 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:02:06,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 04:02:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:06,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:02:06,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:02:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:02:06,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:02:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:02:06,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902268164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:02:06,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1650360477] [2024-11-14 04:02:06,286 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-14 04:02:06,288 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:02:06,289 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:02:06,289 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:02:06,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:02:06,590 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-14 04:02:07,763 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:02:19,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1650360477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:02:19,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:02:19,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [3, 3, 3] total 19 [2024-11-14 04:02:19,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920997742] [2024-11-14 04:02:19,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:02:19,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 04:02:19,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:02:19,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 04:02:19,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:02:19,682 INFO L87 Difference]: Start difference. First operand 493 states and 630 transitions. Second operand has 18 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:02:22,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:02:22,871 INFO L93 Difference]: Finished difference Result 932 states and 1188 transitions. [2024-11-14 04:02:22,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-14 04:02:22,872 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2024-11-14 04:02:22,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:02:22,874 INFO L225 Difference]: With dead ends: 932 [2024-11-14 04:02:22,874 INFO L226 Difference]: Without dead ends: 930 [2024-11-14 04:02:22,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2024-11-14 04:02:22,875 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 136 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-14 04:02:22,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 206 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-14 04:02:22,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2024-11-14 04:02:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 783. [2024-11-14 04:02:22,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 723 states have (on average 1.3333333333333333) internal successors, (964), 754 states have internal predecessors, (964), 14 states have call successors, (14), 14 states have call predecessors, (14), 28 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2024-11-14 04:02:22,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1018 transitions. [2024-11-14 04:02:22,896 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1018 transitions. Word has length 37 [2024-11-14 04:02:22,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:02:22,896 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1018 transitions. [2024-11-14 04:02:22,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:02:22,896 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1018 transitions. [2024-11-14 04:02:22,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 04:02:22,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:02:22,897 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:02:22,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-14 04:02:23,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-14 04:02:23,101 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr20ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:02:23,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:02:23,102 INFO L85 PathProgramCache]: Analyzing trace with hash -466892292, now seen corresponding path program 1 times [2024-11-14 04:02:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:02:23,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944191723] [2024-11-14 04:02:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:23,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:02:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:02:23,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:02:23,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944191723] [2024-11-14 04:02:23,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944191723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:02:23,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606552118] [2024-11-14 04:02:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:23,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:02:23,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:02:23,170 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:02:23,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 04:02:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:23,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:02:23,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:02:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:02:23,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:02:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:02:23,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606552118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:02:23,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626422122] [2024-11-14 04:02:23,383 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 04:02:23,385 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:02:23,386 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:02:23,386 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:02:23,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:02:23,766 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-14 04:02:24,958 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:02:36,924 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16172#(and (= (select |old(#valid)| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= ~global~0.base |old(~global~0.base)|) (= ~state~0 1) (= |parse_input_c1_~x~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (= |#length| (store |old(#length)| |parse_input_c1_~x~0#1.base| 1)) (= (store |old(#valid)| |parse_input_c1_~x~0#1.base| 1) |#valid|) (= 6 |~#commands~0.base|) (not (= |parse_input_c1_~x~0#1.base| 0)) (= (select |old(#valid)| 4) 1) (<= 1 (select |old(#length)| 4)) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |old(#length)| (select (select |#memory_$Pointer$.base| 6) 0))) (= |parse_input_~input#1.base| 4) (= ~global~0.offset 0) (= |parse_input_#in~input#1.base| 4) (<= |#StackHeapBarrier| ~global~0.base) (= |~#commands~0.offset| 0) (<= (select (select |#memory_int| 6) 8) 1) (= (select |old(#valid)| |parse_input_c1_~x~0#1.base|) 0) (= (select |old(#valid)| 6) 1) (<= (+ |parse_input_c1_~x~0#1.base| 1) |#StackHeapBarrier|) (= |old(~state~0)| 1) (<= 9 (select |old(#length)| 6)) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (or (not (= (select (select |#memory_$Pointer$.base| 6) 4) |#funAddr~c2.base|)) (not (= |#funAddr~c2.offset| (select (select |#memory_$Pointer$.offset| 6) 4)))) (= |old(~global~0.offset)| 0))' at error location [2024-11-14 04:02:36,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:02:36,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:02:36,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-14 04:02:36,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893504433] [2024-11-14 04:02:36,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:02:36,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:02:36,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:02:36,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:02:36,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-14 04:02:36,925 INFO L87 Difference]: Start difference. First operand 783 states and 1018 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:02:36,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:02:36,988 INFO L93 Difference]: Finished difference Result 780 states and 999 transitions. [2024-11-14 04:02:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:02:36,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2024-11-14 04:02:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:02:36,991 INFO L225 Difference]: With dead ends: 780 [2024-11-14 04:02:36,991 INFO L226 Difference]: Without dead ends: 780 [2024-11-14 04:02:36,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-11-14 04:02:36,992 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 46 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:02:36,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 73 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:02:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2024-11-14 04:02:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2024-11-14 04:02:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 723 states have (on average 1.3070539419087137) internal successors, (945), 751 states have internal predecessors, (945), 14 states have call successors, (14), 14 states have call predecessors, (14), 28 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2024-11-14 04:02:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 999 transitions. [2024-11-14 04:02:37,010 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 999 transitions. Word has length 38 [2024-11-14 04:02:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:02:37,011 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 999 transitions. [2024-11-14 04:02:37,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:02:37,011 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 999 transitions. [2024-11-14 04:02:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 04:02:37,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:02:37,011 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:02:37,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-14 04:02:37,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-14 04:02:37,215 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:02:37,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:02:37,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1588759058, now seen corresponding path program 1 times [2024-11-14 04:02:37,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:02:37,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140758590] [2024-11-14 04:02:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:37,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:02:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:02:37,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:02:37,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140758590] [2024-11-14 04:02:37,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140758590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:02:37,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912478123] [2024-11-14 04:02:37,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:37,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:02:37,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:02:37,325 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:02:37,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 04:02:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:37,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:02:37,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:02:37,423 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 6 treesize of output 5 [2024-11-14 04:02:37,470 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 04:02:37,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2024-11-14 04:02:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:02:37,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:02:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:02:37,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912478123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:02:37,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [421819068] [2024-11-14 04:02:37,558 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-14 04:02:37,558 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:02:37,558 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:02:37,558 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:02:37,558 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:02:37,856 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-14 04:02:39,034 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:02:50,967 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17984#(and (= (select |old(#valid)| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= ~global~0.base |old(~global~0.base)|) (= ~state~0 1) (= |parse_input_c1_~x~0#1.offset| 0) (not (= ~global~0.base 0)) (<= 1 |#StackHeapBarrier|) (= |#length| (store |old(#length)| |parse_input_c1_~x~0#1.base| 1)) (not (= (select |#valid| ~global~0.base) 1)) (= (store |old(#valid)| |parse_input_c1_~x~0#1.base| 1) |#valid|) (= 6 |~#commands~0.base|) (not (= |parse_input_c1_~x~0#1.base| 0)) (= (select |old(#valid)| 4) 1) (<= 1 (select |old(#length)| 4)) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |old(#length)| (select (select |#memory_$Pointer$.base| 6) 0))) (= |parse_input_~input#1.base| 4) (= ~global~0.offset 0) (= |parse_input_#in~input#1.base| 4) (= |~#commands~0.offset| 0) (<= (select (select |#memory_int| 6) 8) 1) (= (select |old(#valid)| |parse_input_c1_~x~0#1.base|) 0) (= (select |old(#valid)| 6) 1) (<= (+ |parse_input_c1_~x~0#1.base| 1) |#StackHeapBarrier|) (= |old(~state~0)| 1) (<= 9 (select |old(#length)| 6)) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (or (not (= (select (select |#memory_$Pointer$.base| 6) 4) |#funAddr~c2.base|)) (not (= |#funAddr~c2.offset| (select (select |#memory_$Pointer$.offset| 6) 4)))) (= |old(~global~0.offset)| 0) (<= (+ ~global~0.base 1) |#StackHeapBarrier|))' at error location [2024-11-14 04:02:50,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:02:50,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:02:50,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-14 04:02:50,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172862949] [2024-11-14 04:02:50,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:02:50,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:02:50,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:02:50,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:02:50,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-14 04:02:50,968 INFO L87 Difference]: Start difference. First operand 780 states and 999 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:02:51,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:02:51,072 INFO L93 Difference]: Finished difference Result 814 states and 1018 transitions. [2024-11-14 04:02:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:02:51,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2024-11-14 04:02:51,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:02:51,075 INFO L225 Difference]: With dead ends: 814 [2024-11-14 04:02:51,075 INFO L226 Difference]: Without dead ends: 814 [2024-11-14 04:02:51,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 97 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2024-11-14 04:02:51,076 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 37 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:02:51,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 132 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:02:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2024-11-14 04:02:51,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 780. [2024-11-14 04:02:51,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 723 states have (on average 1.2946058091286308) internal successors, (936), 751 states have internal predecessors, (936), 14 states have call successors, (14), 14 states have call predecessors, (14), 28 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2024-11-14 04:02:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 990 transitions. [2024-11-14 04:02:51,094 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 990 transitions. Word has length 39 [2024-11-14 04:02:51,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:02:51,094 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 990 transitions. [2024-11-14 04:02:51,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:02:51,095 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 990 transitions. [2024-11-14 04:02:51,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 04:02:51,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:02:51,095 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:02:51,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 04:02:51,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-14 04:02:51,299 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:02:51,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:02:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2131853161, now seen corresponding path program 1 times [2024-11-14 04:02:51,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:02:51,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772384177] [2024-11-14 04:02:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:51,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:02:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 04:02:51,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:02:51,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772384177] [2024-11-14 04:02:51,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772384177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:02:51,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:02:51,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:02:51,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126437835] [2024-11-14 04:02:51,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:02:51,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:02:51,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:02:51,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:02:51,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:02:51,338 INFO L87 Difference]: Start difference. First operand 780 states and 990 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:02:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:02:51,351 INFO L93 Difference]: Finished difference Result 735 states and 910 transitions. [2024-11-14 04:02:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:02:51,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2024-11-14 04:02:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:02:51,353 INFO L225 Difference]: With dead ends: 735 [2024-11-14 04:02:51,354 INFO L226 Difference]: Without dead ends: 735 [2024-11-14 04:02:51,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:02:51,354 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:02:51,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:02:51,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-14 04:02:51,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2024-11-14 04:02:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 683 states have (on average 1.253294289897511) internal successors, (856), 706 states have internal predecessors, (856), 14 states have call successors, (14), 14 states have call predecessors, (14), 28 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2024-11-14 04:02:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 910 transitions. [2024-11-14 04:02:51,369 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 910 transitions. Word has length 44 [2024-11-14 04:02:51,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:02:51,369 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 910 transitions. [2024-11-14 04:02:51,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:02:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 910 transitions. [2024-11-14 04:02:51,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 04:02:51,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:02:51,371 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:02:51,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-14 04:02:51,371 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:02:51,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:02:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2121433116, now seen corresponding path program 1 times [2024-11-14 04:02:51,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:02:51,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102843437] [2024-11-14 04:02:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:51,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:02:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:02:51,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:02:51,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102843437] [2024-11-14 04:02:51,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102843437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:02:51,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584169788] [2024-11-14 04:02:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:51,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:02:51,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:02:51,423 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:02:51,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 04:02:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:51,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:02:51,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:02:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:02:51,546 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:02:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584169788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:02:51,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:02:51,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-14 04:02:51,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331668845] [2024-11-14 04:02:51,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:02:51,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:02:51,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:02:51,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:02:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:02:51,547 INFO L87 Difference]: Start difference. First operand 735 states and 910 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:02:51,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:02:51,577 INFO L93 Difference]: Finished difference Result 349 states and 412 transitions. [2024-11-14 04:02:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:02:51,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-14 04:02:51,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:02:51,578 INFO L225 Difference]: With dead ends: 349 [2024-11-14 04:02:51,578 INFO L226 Difference]: Without dead ends: 337 [2024-11-14 04:02:51,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:02:51,579 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 14 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:02:51,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 132 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:02:51,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-14 04:02:51,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2024-11-14 04:02:51,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 304 states have (on average 1.2269736842105263) internal successors, (373), 318 states have internal predecessors, (373), 8 states have call successors, (8), 8 states have call predecessors, (8), 14 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-14 04:02:51,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 399 transitions. [2024-11-14 04:02:51,591 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 399 transitions. Word has length 45 [2024-11-14 04:02:51,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:02:51,591 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 399 transitions. [2024-11-14 04:02:51,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:02:51,591 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 399 transitions. [2024-11-14 04:02:51,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-14 04:02:51,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:02:51,592 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:02:51,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-14 04:02:51,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-14 04:02:51,792 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:02:51,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:02:51,793 INFO L85 PathProgramCache]: Analyzing trace with hash -85428762, now seen corresponding path program 1 times [2024-11-14 04:02:51,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:02:51,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165238385] [2024-11-14 04:02:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:51,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:02:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:02:52,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:02:52,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165238385] [2024-11-14 04:02:52,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165238385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:02:52,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63534315] [2024-11-14 04:02:52,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:52,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:02:52,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:02:52,045 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:02:52,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 04:02:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:52,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 04:02:52,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:02:52,268 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 04:02:52,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-14 04:02:52,382 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 04:02:52,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-14 04:02:52,418 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 04:02:52,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 14 treesize of output 13 [2024-11-14 04:02:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:02:52,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:02:52,516 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-14 04:02:52,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 110 treesize of output 105 [2024-11-14 04:02:52,695 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-14 04:02:52,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 105 [2024-11-14 04:02:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:02:52,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63534315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:02:52,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [430984432] [2024-11-14 04:02:52,861 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 04:02:52,861 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:02:52,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:02:52,862 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:02:52,862 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:02:53,670 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-14 04:02:54,629 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:03:04,183 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22202#(and (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= 4 |parse_input_#in~input#1.base|) (not (= (select |#valid| 6) 1)) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(~global~0.offset)| 0) (<= |parse_input_#in~input#1.base| 5))' at error location [2024-11-14 04:03:04,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:03:04,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:03:04,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 10] total 25 [2024-11-14 04:03:04,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975408391] [2024-11-14 04:03:04,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:03:04,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 04:03:04,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:03:04,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 04:03:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1616, Unknown=0, NotChecked=0, Total=1892 [2024-11-14 04:03:04,186 INFO L87 Difference]: Start difference. First operand 335 states and 399 transitions. Second operand has 26 states, 23 states have (on average 5.478260869565218) internal successors, (126), 25 states have internal predecessors, (126), 6 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 04:03:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:03:04,469 INFO L93 Difference]: Finished difference Result 350 states and 413 transitions. [2024-11-14 04:03:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:03:04,470 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 5.478260869565218) internal successors, (126), 25 states have internal predecessors, (126), 6 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 48 [2024-11-14 04:03:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:03:04,471 INFO L225 Difference]: With dead ends: 350 [2024-11-14 04:03:04,471 INFO L226 Difference]: Without dead ends: 350 [2024-11-14 04:03:04,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=379, Invalid=1973, Unknown=0, NotChecked=0, Total=2352 [2024-11-14 04:03:04,472 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 216 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:03:04,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 160 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:03:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-14 04:03:04,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 340. [2024-11-14 04:03:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 308 states have (on average 1.2175324675324675) internal successors, (375), 323 states have internal predecessors, (375), 8 states have call successors, (8), 8 states have call predecessors, (8), 16 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-14 04:03:04,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 403 transitions. [2024-11-14 04:03:04,480 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 403 transitions. Word has length 48 [2024-11-14 04:03:04,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:03:04,480 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 403 transitions. [2024-11-14 04:03:04,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 5.478260869565218) internal successors, (126), 25 states have internal predecessors, (126), 6 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 04:03:04,480 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 403 transitions. [2024-11-14 04:03:04,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-14 04:03:04,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:03:04,481 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:03:04,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 04:03:04,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-14 04:03:04,685 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:03:04,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:03:04,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1369053571, now seen corresponding path program 1 times [2024-11-14 04:03:04,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:03:04,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474124321] [2024-11-14 04:03:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:04,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:03:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:03:04,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:03:04,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474124321] [2024-11-14 04:03:04,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474124321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:03:04,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599845589] [2024-11-14 04:03:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:04,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:03:04,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:03:04,747 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:03:04,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 04:03:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:04,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 04:03:04,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:03:04,913 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_parse_input_c1_~x~0#1.base_111| Int)) (and (= |c_#valid| (store |c_old(#valid)| |v_parse_input_c1_~x~0#1.base_111| (select |c_#valid| |v_parse_input_c1_~x~0#1.base_111|))) (<= |v_parse_input_c1_~x~0#1.base_111| c_~global~0.base))) is different from true [2024-11-14 04:03:04,946 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 04:03:04,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 14 treesize of output 13 [2024-11-14 04:03:05,106 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 04:03:05,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-14 04:03:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-14 04:03:05,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:03:05,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599845589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:03:05,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [298377592] [2024-11-14 04:03:05,256 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-14 04:03:05,256 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:03:05,256 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:03:05,256 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:03:05,256 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:03:05,610 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-14 04:03:06,690 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:03:16,723 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23106#(and (<= 4 (select |#length| 6)) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (not (= (select |#valid| |parse_input_#in~input#1.base|) 1)) (= 6 |~#commands~0.base|) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (<= 4 |parse_input_#in~input#1.base|) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0) (<= |parse_input_#in~input#1.base| 5))' at error location [2024-11-14 04:03:16,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:03:16,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:03:16,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 16 [2024-11-14 04:03:16,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041272385] [2024-11-14 04:03:16,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:03:16,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 04:03:16,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:03:16,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 04:03:16,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1056, Unknown=1, NotChecked=66, Total=1260 [2024-11-14 04:03:16,725 INFO L87 Difference]: Start difference. First operand 340 states and 403 transitions. Second operand has 16 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 5 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:03:17,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:03:17,742 INFO L93 Difference]: Finished difference Result 361 states and 400 transitions. [2024-11-14 04:03:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-14 04:03:17,742 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 5 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 48 [2024-11-14 04:03:17,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:03:17,744 INFO L225 Difference]: With dead ends: 361 [2024-11-14 04:03:17,744 INFO L226 Difference]: Without dead ends: 361 [2024-11-14 04:03:17,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=444, Invalid=2981, Unknown=1, NotChecked=114, Total=3540 [2024-11-14 04:03:17,745 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 392 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:03:17,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 357 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 490 Invalid, 0 Unknown, 207 Unchecked, 0.4s Time] [2024-11-14 04:03:17,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-14 04:03:17,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 324. [2024-11-14 04:03:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 294 states have (on average 1.1904761904761905) internal successors, (350), 307 states have internal predecessors, (350), 8 states have call successors, (8), 8 states have call predecessors, (8), 14 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-14 04:03:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 374 transitions. [2024-11-14 04:03:17,752 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 374 transitions. Word has length 48 [2024-11-14 04:03:17,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:03:17,753 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 374 transitions. [2024-11-14 04:03:17,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 5 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:03:17,753 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 374 transitions. [2024-11-14 04:03:17,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 04:03:17,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:03:17,755 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:03:17,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-14 04:03:17,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-14 04:03:17,955 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:03:17,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:03:17,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1646675655, now seen corresponding path program 1 times [2024-11-14 04:03:17,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:03:17,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065717986] [2024-11-14 04:03:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:17,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:03:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:03:18,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:03:18,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065717986] [2024-11-14 04:03:18,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065717986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:03:18,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042800541] [2024-11-14 04:03:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:18,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:03:18,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:03:18,549 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:03:18,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-14 04:03:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:18,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 04:03:18,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:03:18,851 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 04:03:18,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-14 04:03:19,045 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 04:03:19,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-14 04:03:19,091 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 04:03:19,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 14 treesize of output 13 [2024-11-14 04:03:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:03:19,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:03:19,339 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-14 04:03:19,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 178 treesize of output 165 [2024-11-14 04:03:19,685 INFO L349 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2024-11-14 04:03:19,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 101 [2024-11-14 04:03:20,142 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:03:20,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042800541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:03:20,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1831151977] [2024-11-14 04:03:20,144 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 04:03:20,144 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:03:20,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:03:20,144 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:03:20,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:03:21,315 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-14 04:03:22,446 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:03:32,617 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24192#(and (<= 4 (select |#length| 6)) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (= (select (select |#memory_$Pointer$.offset| 6) 0) |parse_input_#t~mem2#1.offset|) (<= 4 |parse_input_#in~input#1.base|) (not (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1)) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0) (<= |parse_input_#in~input#1.base| 5))' at error location [2024-11-14 04:03:32,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:03:32,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:03:32,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 14] total 40 [2024-11-14 04:03:32,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584970715] [2024-11-14 04:03:32,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:03:32,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-14 04:03:32,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:03:32,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-14 04:03:32,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=3188, Unknown=0, NotChecked=0, Total=3540 [2024-11-14 04:03:32,619 INFO L87 Difference]: Start difference. First operand 324 states and 374 transitions. Second operand has 42 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 34 states have internal predecessors, (130), 6 states have call successors, (9), 9 states have call predecessors, (9), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 04:03:33,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:03:33,284 INFO L93 Difference]: Finished difference Result 335 states and 382 transitions. [2024-11-14 04:03:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:03:33,285 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 34 states have internal predecessors, (130), 6 states have call successors, (9), 9 states have call predecessors, (9), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 49 [2024-11-14 04:03:33,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:03:33,286 INFO L225 Difference]: With dead ends: 335 [2024-11-14 04:03:33,286 INFO L226 Difference]: Without dead ends: 335 [2024-11-14 04:03:33,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=569, Invalid=3987, Unknown=0, NotChecked=0, Total=4556 [2024-11-14 04:03:33,288 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 360 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:03:33,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 268 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:03:33,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-14 04:03:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 324. [2024-11-14 04:03:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 294 states have (on average 1.183673469387755) internal successors, (348), 307 states have internal predecessors, (348), 8 states have call successors, (8), 8 states have call predecessors, (8), 14 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-14 04:03:33,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 372 transitions. [2024-11-14 04:03:33,295 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 372 transitions. Word has length 49 [2024-11-14 04:03:33,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:03:33,295 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 372 transitions. [2024-11-14 04:03:33,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 34 states have internal predecessors, (130), 6 states have call successors, (9), 9 states have call predecessors, (9), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 04:03:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 372 transitions. [2024-11-14 04:03:33,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 04:03:33,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:03:33,296 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:03:33,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-14 04:03:33,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-14 04:03:33,497 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:03:33,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:03:33,497 INFO L85 PathProgramCache]: Analyzing trace with hash 664362528, now seen corresponding path program 1 times [2024-11-14 04:03:33,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:03:33,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72243206] [2024-11-14 04:03:33,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:33,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:03:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:33,727 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 04:03:33,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:03:33,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72243206] [2024-11-14 04:03:33,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72243206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:03:33,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197365409] [2024-11-14 04:03:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:33,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:03:33,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:03:33,730 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:03:33,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 04:03:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:33,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 04:03:33,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:03:33,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:03:33,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:03:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 04:03:34,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:03:34,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197365409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:03:34,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [671881479] [2024-11-14 04:03:34,240 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 04:03:34,240 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:03:34,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:03:34,241 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:03:34,241 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:03:36,510 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 142 for LOIs [2024-11-14 04:03:37,220 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:03:40,688 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25144#(and (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (exists ((|v_parse_input_#t~mem2#1.base_203| Int)) (and (<= 1 (select |#length| |v_parse_input_#t~mem2#1.base_203|)) (= (select |#valid| |v_parse_input_#t~mem2#1.base_203|) 1))) (exists ((|v_parse_input_~input#1.base_91| Int)) (and (<= (select |#length| |v_parse_input_~input#1.base_91|) 0) (<= |v_parse_input_~input#1.base_91| 5) (<= 3 |v_parse_input_~input#1.base_91|) (= (select |#valid| |v_parse_input_~input#1.base_91|) 1))) (= |~#commands~0.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (<= |parse_input_#in~input#1.base| 5) (<= 0 |parse_input_~i~0#1|))' at error location [2024-11-14 04:03:40,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:03:40,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:03:40,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2024-11-14 04:03:40,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134855166] [2024-11-14 04:03:40,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:03:40,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 04:03:40,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:03:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 04:03:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1376, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 04:03:40,691 INFO L87 Difference]: Start difference. First operand 324 states and 372 transitions. Second operand has 17 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 4 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:03:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:03:41,434 INFO L93 Difference]: Finished difference Result 336 states and 374 transitions. [2024-11-14 04:03:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 04:03:41,434 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 4 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 50 [2024-11-14 04:03:41,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:03:41,435 INFO L225 Difference]: With dead ends: 336 [2024-11-14 04:03:41,436 INFO L226 Difference]: Without dead ends: 336 [2024-11-14 04:03:41,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=436, Invalid=2534, Unknown=0, NotChecked=0, Total=2970 [2024-11-14 04:03:41,437 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 351 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:03:41,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 224 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:03:41,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-14 04:03:41,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 323. [2024-11-14 04:03:41,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 294 states have (on average 1.1496598639455782) internal successors, (338), 306 states have internal predecessors, (338), 8 states have call successors, (8), 8 states have call predecessors, (8), 14 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-14 04:03:41,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 362 transitions. [2024-11-14 04:03:41,443 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 362 transitions. Word has length 50 [2024-11-14 04:03:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:03:41,443 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 362 transitions. [2024-11-14 04:03:41,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 4 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:03:41,444 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 362 transitions. [2024-11-14 04:03:41,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 04:03:41,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:03:41,444 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:03:41,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-14 04:03:41,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-14 04:03:41,645 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:03:41,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:03:41,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1907340969, now seen corresponding path program 1 times [2024-11-14 04:03:41,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:03:41,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107788709] [2024-11-14 04:03:41,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:41,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:03:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:03:42,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:03:42,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107788709] [2024-11-14 04:03:42,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107788709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:03:42,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374943837] [2024-11-14 04:03:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:42,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:03:42,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:03:42,042 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:03:42,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 04:03:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:42,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-14 04:03:42,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:03:42,225 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 04:03:42,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-14 04:03:42,447 INFO L349 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2024-11-14 04:03:42,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 75 [2024-11-14 04:03:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:03:42,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:03:42,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374943837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:03:42,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1775672734] [2024-11-14 04:03:42,680 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 04:03:42,681 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:03:42,681 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:03:42,681 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:03:42,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:03:43,545 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 39 for LOIs [2024-11-14 04:03:43,740 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:03:47,049 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26046#(and (<= 4 (select |#length| 6)) (<= 1 |#StackHeapBarrier|) (not (= (select |#valid| |parse_input_#in~input#1.base|) 1)) (= 6 |~#commands~0.base|) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (or (and (= ~global~0.base 0) (= |parse_input_#in~input#1.base| 3) (= ~state~0 0) (= |old(~global~0.base)| 0) (= |old(~state~0)| 0)) (and (= ~state~0 1) (= |old(~state~0)| 1))) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0) (<= |parse_input_#in~input#1.base| 5))' at error location [2024-11-14 04:03:47,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:03:47,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:03:47,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2024-11-14 04:03:47,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246889529] [2024-11-14 04:03:47,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:03:47,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 04:03:47,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:03:47,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 04:03:47,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1325, Unknown=1, NotChecked=0, Total=1482 [2024-11-14 04:03:47,050 INFO L87 Difference]: Start difference. First operand 323 states and 362 transitions. Second operand has 20 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 04:03:47,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:03:47,973 INFO L93 Difference]: Finished difference Result 332 states and 370 transitions. [2024-11-14 04:03:47,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 04:03:47,974 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2024-11-14 04:03:47,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:03:47,975 INFO L225 Difference]: With dead ends: 332 [2024-11-14 04:03:47,975 INFO L226 Difference]: Without dead ends: 332 [2024-11-14 04:03:47,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=376, Invalid=2379, Unknown=1, NotChecked=0, Total=2756 [2024-11-14 04:03:47,976 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 297 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:03:47,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 263 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:03:47,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-14 04:03:47,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 322. [2024-11-14 04:03:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 294 states have (on average 1.1428571428571428) internal successors, (336), 305 states have internal predecessors, (336), 8 states have call successors, (8), 8 states have call predecessors, (8), 14 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-14 04:03:47,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 360 transitions. [2024-11-14 04:03:47,983 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 360 transitions. Word has length 51 [2024-11-14 04:03:47,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:03:47,983 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 360 transitions. [2024-11-14 04:03:47,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 04:03:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 360 transitions. [2024-11-14 04:03:47,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 04:03:47,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:03:47,985 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:03:48,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-14 04:03:48,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:03:48,186 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:03:48,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:03:48,187 INFO L85 PathProgramCache]: Analyzing trace with hash 652197856, now seen corresponding path program 1 times [2024-11-14 04:03:48,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:03:48,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874528969] [2024-11-14 04:03:48,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:48,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:03:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:03:48,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:03:48,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874528969] [2024-11-14 04:03:48,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874528969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:03:48,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804910286] [2024-11-14 04:03:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:48,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:03:48,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:03:48,890 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:03:48,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 04:03:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:48,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-14 04:03:49,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:03:49,338 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 04:03:49,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-14 04:03:50,028 INFO L349 Elim1Store]: treesize reduction 57, result has 26.9 percent of original size [2024-11-14 04:03:50,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 67 [2024-11-14 04:03:50,079 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 04:03:50,083 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2024-11-14 04:03:50,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 9 [2024-11-14 04:03:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:03:50,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:03:51,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804910286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:03:51,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [282213050] [2024-11-14 04:03:51,176 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 04:03:51,176 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:03:51,176 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:03:51,176 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:03:51,176 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:03:55,279 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-14 04:03:56,181 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:04:03,489 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26994#(and (or (and (= ~global~0.base 0) (= ~global~0.offset 0) (= |parse_input_#in~input#1.base| 3) (= ~state~0 0) (= |old(~global~0.base)| 0) (= |old(~state~0)| 0) (= |old(~global~0.offset)| 0)) (and (= ~state~0 1) (= |old(~state~0)| 1))) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= 3 |parse_input_~input#1.base|) (= |~#commands~0.offset| 0) (<= |parse_input_~input#1.base| 5) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (<= |parse_input_#in~input#1.base| 5) (<= 0 |parse_input_~i~0#1|) (exists ((|v_parse_input_#t~mem2#1.base_224| Int)) (not (= (select |#valid| |v_parse_input_#t~mem2#1.base_224|) 1))))' at error location [2024-11-14 04:04:03,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:04:03,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:04:03,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 30 [2024-11-14 04:04:03,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915431323] [2024-11-14 04:04:03,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:04:03,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-14 04:04:03,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:03,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-14 04:04:03,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3073, Unknown=0, NotChecked=0, Total=3306 [2024-11-14 04:04:03,491 INFO L87 Difference]: Start difference. First operand 322 states and 360 transitions. Second operand has 32 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 27 states have internal predecessors, (104), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:04:06,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:06,393 INFO L93 Difference]: Finished difference Result 336 states and 370 transitions. [2024-11-14 04:04:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-14 04:04:06,394 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 27 states have internal predecessors, (104), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 57 [2024-11-14 04:04:06,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:06,395 INFO L225 Difference]: With dead ends: 336 [2024-11-14 04:04:06,395 INFO L226 Difference]: Without dead ends: 336 [2024-11-14 04:04:06,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1646 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=817, Invalid=5989, Unknown=0, NotChecked=0, Total=6806 [2024-11-14 04:04:06,397 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 408 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:06,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 418 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 772 Invalid, 1 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 04:04:06,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-14 04:04:06,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 321. [2024-11-14 04:04:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 294 states have (on average 1.1360544217687074) internal successors, (334), 304 states have internal predecessors, (334), 8 states have call successors, (8), 8 states have call predecessors, (8), 14 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-14 04:04:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 358 transitions. [2024-11-14 04:04:06,404 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 358 transitions. Word has length 57 [2024-11-14 04:04:06,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:06,404 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 358 transitions. [2024-11-14 04:04:06,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 27 states have internal predecessors, (104), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:04:06,404 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 358 transitions. [2024-11-14 04:04:06,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-14 04:04:06,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:06,405 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:06,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-14 04:04:06,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:06,609 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:06,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:06,610 INFO L85 PathProgramCache]: Analyzing trace with hash 322983591, now seen corresponding path program 1 times [2024-11-14 04:04:06,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:06,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948715635] [2024-11-14 04:04:06,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:06,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 04:04:06,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948715635] [2024-11-14 04:04:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948715635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:04:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123668786] [2024-11-14 04:04:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:06,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:06,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:06,664 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:06,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 04:04:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:06,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:04:06,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 04:04:06,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 04:04:06,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123668786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:06,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [107383808] [2024-11-14 04:04:06,862 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-14 04:04:06,862 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:04:06,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:04:06,862 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:04:06,862 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:04:09,126 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 142 for LOIs [2024-11-14 04:04:09,757 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:04:13,080 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28067#(and (= |parse_input_c1_~x~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (exists ((|v_#length_171| (Array Int Int)) (|v_#valid_242| (Array Int Int)) (|v_parse_input_#t~mem2#1.base_242| Int) (|v_parse_input_~i~0#1_236| Int)) (and (= |#length| (store |v_#length_171| |parse_input_c1_~x~0#1.base| 1)) (<= (+ 9 (* 9 |v_parse_input_~i~0#1_236|)) (select |v_#length_171| 6)) (<= 0 |v_parse_input_~i~0#1_236|) (or (not (= |#funAddr~c2.offset| (select (select |#memory_$Pointer$.offset| 6) (+ 4 (* 9 |v_parse_input_~i~0#1_236|))))) (not (= |#funAddr~c2.base| (select (select |#memory_$Pointer$.base| 6) (+ 4 (* 9 |v_parse_input_~i~0#1_236|)))))) (= (select |v_#valid_242| |parse_input_~input#1.base|) 1) (<= (select (select |#memory_int| 6) (+ 8 (* 9 |v_parse_input_~i~0#1_236|))) ~state~0) (<= 1 (select |v_#length_171| |parse_input_~input#1.base|)) (<= 1 (select |v_#length_171| |v_parse_input_#t~mem2#1.base_242|)) (= (select |v_#valid_242| |parse_input_c1_~x~0#1.base|) 0) (= (store |v_#valid_242| |parse_input_c1_~x~0#1.base| 1) |#valid|) (= (select |v_#valid_242| |v_parse_input_#t~mem2#1.base_242|) 1) (= (select |v_#valid_242| 6) 1))) (= 6 |~#commands~0.base|) (not (= |parse_input_c1_~x~0#1.base| 0)) (<= 3 |parse_input_~input#1.base|) (not (= ~global~0.offset 0)) (= |~#commands~0.offset| 0) (<= (+ |parse_input_c1_~x~0#1.base| 1) |#StackHeapBarrier|) (<= |parse_input_~input#1.base| 5) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (<= |parse_input_#in~input#1.base| 5))' at error location [2024-11-14 04:04:13,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:04:13,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:04:13,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-14 04:04:13,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194070493] [2024-11-14 04:04:13,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:04:13,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:04:13,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:13,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:04:13,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2024-11-14 04:04:13,081 INFO L87 Difference]: Start difference. First operand 321 states and 358 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:04:13,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:13,121 INFO L93 Difference]: Finished difference Result 319 states and 354 transitions. [2024-11-14 04:04:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:04:13,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2024-11-14 04:04:13,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:13,122 INFO L225 Difference]: With dead ends: 319 [2024-11-14 04:04:13,122 INFO L226 Difference]: Without dead ends: 319 [2024-11-14 04:04:13,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-11-14 04:04:13,123 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:13,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 61 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:04:13,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-14 04:04:13,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 234. [2024-11-14 04:04:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 216 states have (on average 1.1157407407407407) internal successors, (241), 221 states have internal predecessors, (241), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-14 04:04:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 256 transitions. [2024-11-14 04:04:13,131 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 256 transitions. Word has length 58 [2024-11-14 04:04:13,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:13,131 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 256 transitions. [2024-11-14 04:04:13,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:04:13,131 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 256 transitions. [2024-11-14 04:04:13,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-14 04:04:13,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:13,132 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:13,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-14 04:04:13,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:13,333 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:13,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:13,333 INFO L85 PathProgramCache]: Analyzing trace with hash -473438201, now seen corresponding path program 1 times [2024-11-14 04:04:13,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:13,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682375470] [2024-11-14 04:04:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:13,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:13,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682375470] [2024-11-14 04:04:13,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682375470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:04:13,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062374697] [2024-11-14 04:04:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:13,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:13,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:13,605 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:13,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-14 04:04:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:13,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-14 04:04:13,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:13,714 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 6 treesize of output 5 [2024-11-14 04:04:13,847 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 04:04:13,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 16 [2024-11-14 04:04:13,871 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 04:04:13,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2024-11-14 04:04:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:13,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:13,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062374697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:04:13,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1994923855] [2024-11-14 04:04:13,958 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 04:04:13,958 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:04:13,958 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:04:13,958 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:04:13,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:04:14,713 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-14 04:04:15,625 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:04:25,281 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28893#(and (= ~state~0 1) (= |parse_input_c1_~x~0#1.offset| 0) (not (= ~global~0.base 0)) (<= 1 |#StackHeapBarrier|) (not (= (select |#valid| ~global~0.base) 1)) (= 6 |~#commands~0.base|) (exists ((|v_#length_178| (Array Int Int))) (and (<= 1 (select |v_#length_178| |parse_input_~input#1.base|)) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |v_#length_178| (select (select |#memory_$Pointer$.base| 6) 0))) (<= 9 (select |v_#length_178| 6)) (= |#length| (store |v_#length_178| |parse_input_c1_~x~0#1.base| 1)))) (not (= |parse_input_c1_~x~0#1.base| 0)) (<= 4 |parse_input_#in~input#1.base|) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= (select (select |#memory_int| 6) 8) 1) (<= (+ |parse_input_c1_~x~0#1.base| 1) |#StackHeapBarrier|) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (exists ((|v_#valid_257| (Array Int Int))) (and (= |#valid| (store |v_#valid_257| |parse_input_c1_~x~0#1.base| 1)) (= (select |v_#valid_257| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= (select |v_#valid_257| |parse_input_~input#1.base|) 1) (= (select |v_#valid_257| 6) 1) (= (select |v_#valid_257| |parse_input_c1_~x~0#1.base|) 0))) (= |parse_input_#in~input#1.offset| 0) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (or (not (= (select (select |#memory_$Pointer$.base| 6) 4) |#funAddr~c2.base|)) (not (= |#funAddr~c2.offset| (select (select |#memory_$Pointer$.offset| 6) 4)))) (= |old(~global~0.offset)| 0) (<= |parse_input_#in~input#1.base| 5) (<= (+ ~global~0.base 1) |#StackHeapBarrier|))' at error location [2024-11-14 04:04:25,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:04:25,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:04:25,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-14 04:04:25,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929040519] [2024-11-14 04:04:25,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:04:25,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 04:04:25,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:25,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 04:04:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2024-11-14 04:04:25,283 INFO L87 Difference]: Start difference. First operand 234 states and 256 transitions. Second operand has 11 states, 10 states have (on average 6.7) internal successors, (67), 11 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:04:25,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:25,545 INFO L93 Difference]: Finished difference Result 290 states and 318 transitions. [2024-11-14 04:04:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:04:25,546 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 11 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 62 [2024-11-14 04:04:25,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:25,547 INFO L225 Difference]: With dead ends: 290 [2024-11-14 04:04:25,547 INFO L226 Difference]: Without dead ends: 290 [2024-11-14 04:04:25,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 04:04:25,548 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 37 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:25,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 207 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:04:25,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-14 04:04:25,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 277. [2024-11-14 04:04:25,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 255 states have (on average 1.1176470588235294) internal successors, (285), 262 states have internal predecessors, (285), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-14 04:04:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 305 transitions. [2024-11-14 04:04:25,553 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 305 transitions. Word has length 62 [2024-11-14 04:04:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:25,553 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 305 transitions. [2024-11-14 04:04:25,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 11 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:04:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 305 transitions. [2024-11-14 04:04:25,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-14 04:04:25,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:25,555 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:25,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-14 04:04:25,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-14 04:04:25,755 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:25,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash 2026599742, now seen corresponding path program 1 times [2024-11-14 04:04:25,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:25,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186974823] [2024-11-14 04:04:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:25,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:04:25,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 04:04:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:04:25,817 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 04:04:25,817 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 04:04:25,818 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (22 of 23 remaining) [2024-11-14 04:04:25,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining) [2024-11-14 04:04:25,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2024-11-14 04:04:25,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2024-11-14 04:04:25,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2024-11-14 04:04:25,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2024-11-14 04:04:25,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2024-11-14 04:04:25,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2024-11-14 04:04:25,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining) [2024-11-14 04:04:25,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 23 remaining) [2024-11-14 04:04:25,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 23 remaining) [2024-11-14 04:04:25,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE (11 of 23 remaining) [2024-11-14 04:04:25,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE (10 of 23 remaining) [2024-11-14 04:04:25,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE (9 of 23 remaining) [2024-11-14 04:04:25,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE (8 of 23 remaining) [2024-11-14 04:04:25,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr14ASSERT_VIOLATIONMEMORY_FREE (7 of 23 remaining) [2024-11-14 04:04:25,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr15ASSERT_VIOLATIONMEMORY_FREE (6 of 23 remaining) [2024-11-14 04:04:25,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE (5 of 23 remaining) [2024-11-14 04:04:25,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE (4 of 23 remaining) [2024-11-14 04:04:25,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE (3 of 23 remaining) [2024-11-14 04:04:25,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE (2 of 23 remaining) [2024-11-14 04:04:25,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr20ASSERT_VIOLATIONMEMORY_FREE (1 of 23 remaining) [2024-11-14 04:04:25,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE (0 of 23 remaining) [2024-11-14 04:04:25,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-14 04:04:25,829 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:25,891 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:04:25,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:04:25 BoogieIcfgContainer [2024-11-14 04:04:25,895 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:04:25,896 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:04:25,896 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:04:25,896 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:04:25,897 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:00:02" (3/4) ... [2024-11-14 04:04:25,899 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 04:04:25,900 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:04:25,900 INFO L158 Benchmark]: Toolchain (without parser) took 264267.90ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 90.8MB in the beginning and 587.7MB in the end (delta: -496.9MB). Peak memory consumption was 897.3MB. Max. memory is 16.1GB. [2024-11-14 04:04:25,901 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:04:25,901 INFO L158 Benchmark]: CACSL2BoogieTranslator took 597.95ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 70.6MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:04:25,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.06ms. Allocated memory is still 117.4MB. Free memory was 70.6MB in the beginning and 68.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:04:25,901 INFO L158 Benchmark]: Boogie Preprocessor took 47.10ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 67.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:04:25,901 INFO L158 Benchmark]: RCFGBuilder took 625.12ms. Allocated memory is still 117.4MB. Free memory was 67.6MB in the beginning and 49.6MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:04:25,901 INFO L158 Benchmark]: TraceAbstraction took 262928.01ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 48.9MB in the beginning and 587.9MB in the end (delta: -539.0MB). Peak memory consumption was 863.7MB. Max. memory is 16.1GB. [2024-11-14 04:04:25,902 INFO L158 Benchmark]: Witness Printer took 4.32ms. Allocated memory is still 1.5GB. Free memory was 587.9MB in the beginning and 587.7MB in the end (delta: 209.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:04:25,903 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 597.95ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 70.6MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.06ms. Allocated memory is still 117.4MB. Free memory was 70.6MB in the beginning and 68.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.10ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 67.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 625.12ms. Allocated memory is still 117.4MB. Free memory was 67.6MB in the beginning and 49.6MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 262928.01ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 48.9MB in the beginning and 587.9MB in the end (delta: -539.0MB). Peak memory consumption was 863.7MB. Max. memory is 16.1GB. * Witness Printer took 4.32ms. Allocated memory is still 1.5GB. Free memory was 587.9MB in the beginning and 587.7MB in the end (delta: 209.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of strcmp at line 693, overapproximation of memtrack at line 722. Possible FailurePath: [L685] int state = STATE_1; [L686] char *global = 0; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L723] CALL parse_input("c1") VAL [\old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR commands[i].name VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(state)=0, commands={6:0}, global={0:0}, state=0, x={7:0}] [L706] COND FALSE !(\read(*global)) VAL [\old(state)=0, commands={6:0}, global={0:0}, state=0, x={7:0}] [L709] global = x [L710] state = STATE_2 VAL [\old(state)=0, commands={6:0}, global={7:0}, state=1] [L695] RET commands[i].function() [L723] RET parse_input("c1") VAL [commands={6:0}, global={7:0}, state=1] [L724] CALL parse_input("c1") VAL [\old(state)=1, commands={6:0}, global={7:0}, state=1] [L692] int i = 0; VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={4:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={4:0}, state=1] [L693] EXPR commands[i].name VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={4:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={4:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={4:0}, state=1] [L693] EXPR commands[i].name VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={4:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={7:0}, i=2, input={4:0}, state=1] [L692] COND FALSE !(i < 2) [L724] RET parse_input("c1") VAL [commands={6:0}, global={7:0}, state=1] [L725] CALL parse_input("c2") VAL [\old(state)=1, commands={6:0}, global={7:0}, state=1] [L692] int i = 0; VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, state=1] [L693] EXPR commands[i].name VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={5:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={5:0}, state=1] [L693] EXPR commands[i].name VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={5:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={7:0}, i=2, input={5:0}, state=1] [L692] COND FALSE !(i < 2) [L725] RET parse_input("c2") VAL [commands={6:0}, global={7:0}, state=1] [L726] return 0; VAL [\result=0, commands={6:0}, global={7:0}, state=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 64 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 262.8s, OverallIterations: 34, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 7748 SdHoareTripleChecker+Valid, 9.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7748 mSDsluCounter, 7853 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 207 IncrementalHoareTripleChecker+Unchecked, 6254 mSDsCounter, 886 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8693 IncrementalHoareTripleChecker+Invalid, 9788 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 886 mSolverCounterUnsat, 1599 mSDtfsCounter, 8693 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2718 GetRequests, 1712 SyntacticMatches, 23 SemanticMatches, 983 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 13718 ImplicationChecksByTransitivity, 186.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=783occurred in iteration=21, InterpolantAutomatonStates: 391, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 33 MinimizatonAttempts, 1327 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 2019 NumberOfCodeBlocks, 2019 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 2252 ConstructedInterpolants, 148 QuantifiedInterpolants, 24605 SizeOfPredicates, 90 NumberOfNonLiveVariables, 6008 ConjunctsInSsa, 446 ConjunctsInUnsatCore, 67 InterpolantComputations, 11 PerfectInterpolantSequences, 555/1196 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 4.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 34, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 67, TOOLS_POST_TIME: 3.6s, TOOLS_POST_CALL_APPLICATIONS: 5, TOOLS_POST_CALL_TIME: 0.2s, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 74, TOOLS_QUANTIFIERELIM_TIME: 3.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 119, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 34, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 1.2s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.2s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 366, DAG_COMPRESSION_RETAINED_NODES: 101, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-14 04:04:25,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/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_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/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 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:04:28,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:04:28,669 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 04:04:28,680 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:04:28,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:04:28,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:04:28,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:04:28,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:04:28,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:04:28,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:04:28,723 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:04:28,723 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:04:28,723 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:04:28,724 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:04:28,724 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:04:28,724 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:04:28,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 04:04:28,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 04:04:28,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:04:28,725 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:04:28,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:04:28,726 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:04:28,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:04:28,726 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 04:04:28,726 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 04:04:28,726 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 04:04:28,727 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:04:28,727 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:04:28,727 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 04:04:28,727 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:04:28,727 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 04:04:28,727 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:04:28,728 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:04:28,728 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:04:28,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:04:28,729 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 04:04:28,729 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:04:28,729 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:04:28,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:04:28,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:04:28,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:04:28,729 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 04:04:28,730 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 04:04:28,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:04:28,730 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:04:28,730 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/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 -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2024-11-14 04:04:29,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:04:29,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:04:29,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:04:29,072 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:04:29,073 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:04:29,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i Unable to find full path for "g++" [2024-11-14 04:04:31,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:04:31,375 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:04:31,376 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2024-11-14 04:04:31,389 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/data/e0ed508f8/7f02f9219fa34591abe4cb5659b7558c/FLAGe53bb2be8 [2024-11-14 04:04:31,410 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/data/e0ed508f8/7f02f9219fa34591abe4cb5659b7558c [2024-11-14 04:04:31,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:04:31,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:04:31,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:04:31,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:04:31,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:04:31,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:04:31" (1/1) ... [2024-11-14 04:04:31,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673fa4b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:31, skipping insertion in model container [2024-11-14 04:04:31,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:04:31" (1/1) ... [2024-11-14 04:04:31,474 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:04:31,941 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 04:04:31,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:04:31,970 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:04:32,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:04:32,101 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:04:32,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32 WrapperNode [2024-11-14 04:04:32,103 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:04:32,104 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:04:32,104 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:04:32,105 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:04:32,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32" (1/1) ... [2024-11-14 04:04:32,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32" (1/1) ... [2024-11-14 04:04:32,170 INFO L138 Inliner]: procedures = 169, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 99 [2024-11-14 04:04:32,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:04:32,171 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:04:32,171 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:04:32,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:04:32,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32" (1/1) ... [2024-11-14 04:04:32,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32" (1/1) ... [2024-11-14 04:04:32,187 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32" (1/1) ... [2024-11-14 04:04:32,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32" (1/1) ... [2024-11-14 04:04:32,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32" (1/1) ... [2024-11-14 04:04:32,210 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32" (1/1) ... [2024-11-14 04:04:32,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32" (1/1) ... [2024-11-14 04:04:32,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32" (1/1) ... [2024-11-14 04:04:32,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:04:32,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:04:32,226 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:04:32,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:04:32,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32" (1/1) ... [2024-11-14 04:04:32,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:04:32,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:32,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:04:32,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:04:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-14 04:04:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2024-11-14 04:04:32,293 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2024-11-14 04:04:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:04:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:04:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 04:04:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:04:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 04:04:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 04:04:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:04:32,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:04:32,409 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:04:32,411 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:04:32,870 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-14 04:04:32,870 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:04:32,881 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:04:32,881 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:04:32,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:04:32 BoogieIcfgContainer [2024-11-14 04:04:32,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:04:32,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:04:32,884 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:04:32,889 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:04:32,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:04:31" (1/3) ... [2024-11-14 04:04:32,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c2d2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:04:32, skipping insertion in model container [2024-11-14 04:04:32,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:32" (2/3) ... [2024-11-14 04:04:32,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c2d2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:04:32, skipping insertion in model container [2024-11-14 04:04:32,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:04:32" (3/3) ... [2024-11-14 04:04:32,892 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2024-11-14 04:04:32,906 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:04:32,908 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG bftpd_1.i that has 2 procedures, 68 locations, 1 initial locations, 1 loop locations, and 23 error locations. [2024-11-14 04:04:32,946 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:04:32,959 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;@18d3e527, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:04:32,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-14 04:04:32,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 40 states have (on average 1.775) internal successors, (71), 63 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:04:32,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 04:04:32,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:32,970 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 04:04:32,970 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:32,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:32,975 INFO L85 PathProgramCache]: Analyzing trace with hash -565372166, now seen corresponding path program 1 times [2024-11-14 04:04:32,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:32,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207223527] [2024-11-14 04:04:32,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:32,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:32,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:32,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:32,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 04:04:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:33,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:04:33,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:33,244 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 04:04:33,244 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:33,245 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:33,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207223527] [2024-11-14 04:04:33,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207223527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:33,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:33,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 04:04:33,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775445355] [2024-11-14 04:04:33,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:33,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:04:33,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:33,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:04:33,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:33,288 INFO L87 Difference]: Start difference. First operand has 68 states, 40 states have (on average 1.775) internal successors, (71), 63 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:33,527 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2024-11-14 04:04:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:04:33,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 04:04:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:33,541 INFO L225 Difference]: With dead ends: 123 [2024-11-14 04:04:33,541 INFO L226 Difference]: Without dead ends: 119 [2024-11-14 04:04:33,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 04:04:33,548 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 57 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:33,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 111 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:04:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-14 04:04:33,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 90. [2024-11-14 04:04:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 60 states have (on average 1.7) internal successors, (102), 82 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-14 04:04:33,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 115 transitions. [2024-11-14 04:04:33,608 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 115 transitions. Word has length 6 [2024-11-14 04:04:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:33,609 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 115 transitions. [2024-11-14 04:04:33,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 115 transitions. [2024-11-14 04:04:33,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 04:04:33,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:33,610 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 04:04:33,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-14 04:04:33,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:33,813 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:33,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash -565372165, now seen corresponding path program 1 times [2024-11-14 04:04:33,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:33,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91364792] [2024-11-14 04:04:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:33,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:33,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:33,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:33,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 04:04:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:33,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:04:33,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:34,063 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 04:04:34,063 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:34,063 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:34,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91364792] [2024-11-14 04:04:34,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91364792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:34,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:34,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:04:34,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989466623] [2024-11-14 04:04:34,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:34,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:04:34,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:34,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:04:34,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:04:34,069 INFO L87 Difference]: Start difference. First operand 90 states and 115 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:34,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:34,349 INFO L93 Difference]: Finished difference Result 191 states and 251 transitions. [2024-11-14 04:04:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:04:34,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 04:04:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:34,353 INFO L225 Difference]: With dead ends: 191 [2024-11-14 04:04:34,353 INFO L226 Difference]: Without dead ends: 191 [2024-11-14 04:04:34,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 04:04:34,356 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 76 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:34,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 174 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:04:34,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-14 04:04:34,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 160. [2024-11-14 04:04:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 124 states have (on average 1.7419354838709677) internal successors, (216), 146 states have internal predecessors, (216), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-14 04:04:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 247 transitions. [2024-11-14 04:04:34,393 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 247 transitions. Word has length 6 [2024-11-14 04:04:34,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:34,393 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 247 transitions. [2024-11-14 04:04:34,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 247 transitions. [2024-11-14 04:04:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 04:04:34,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:34,396 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:34,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-14 04:04:34,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:34,599 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:34,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:34,599 INFO L85 PathProgramCache]: Analyzing trace with hash -346667981, now seen corresponding path program 1 times [2024-11-14 04:04:34,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:34,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55902093] [2024-11-14 04:04:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:34,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:34,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:34,605 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:34,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-14 04:04:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:34,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:04:34,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:34,889 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 04:04:34,889 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:34,889 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:34,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55902093] [2024-11-14 04:04:34,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55902093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:34,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:34,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:04:34,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33226553] [2024-11-14 04:04:34,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:34,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:04:34,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:34,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:04:34,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:04:34,893 INFO L87 Difference]: Start difference. First operand 160 states and 247 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:35,294 INFO L93 Difference]: Finished difference Result 211 states and 302 transitions. [2024-11-14 04:04:35,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:04:35,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 04:04:35,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:35,297 INFO L225 Difference]: With dead ends: 211 [2024-11-14 04:04:35,297 INFO L226 Difference]: Without dead ends: 211 [2024-11-14 04:04:35,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:04:35,302 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 85 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:35,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 177 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:04:35,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-14 04:04:35,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 163. [2024-11-14 04:04:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 127 states have (on average 1.7244094488188977) internal successors, (219), 149 states have internal predecessors, (219), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-14 04:04:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 250 transitions. [2024-11-14 04:04:35,330 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 250 transitions. Word has length 7 [2024-11-14 04:04:35,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:35,331 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 250 transitions. [2024-11-14 04:04:35,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:35,331 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 250 transitions. [2024-11-14 04:04:35,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 04:04:35,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:35,332 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:35,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-14 04:04:35,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:35,533 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:35,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:35,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2138194522, now seen corresponding path program 1 times [2024-11-14 04:04:35,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:35,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703558886] [2024-11-14 04:04:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:35,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:35,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:35,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:35,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-14 04:04:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:35,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:04:35,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:35,851 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 04:04:35,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:35,852 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:35,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703558886] [2024-11-14 04:04:35,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703558886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:35,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:35,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:04:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054510160] [2024-11-14 04:04:35,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:35,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:04:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:35,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:04:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:04:35,867 INFO L87 Difference]: Start difference. First operand 163 states and 250 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:36,161 INFO L93 Difference]: Finished difference Result 193 states and 252 transitions. [2024-11-14 04:04:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:04:36,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 04:04:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:36,164 INFO L225 Difference]: With dead ends: 193 [2024-11-14 04:04:36,164 INFO L226 Difference]: Without dead ends: 193 [2024-11-14 04:04:36,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:04:36,165 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 90 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:36,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 208 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:04:36,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-14 04:04:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 163. [2024-11-14 04:04:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 149 states have internal predecessors, (217), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-14 04:04:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 248 transitions. [2024-11-14 04:04:36,179 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 248 transitions. Word has length 8 [2024-11-14 04:04:36,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:36,179 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 248 transitions. [2024-11-14 04:04:36,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:36,179 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 248 transitions. [2024-11-14 04:04:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 04:04:36,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:36,180 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:36,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-14 04:04:36,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:36,382 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:36,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:36,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1859520789, now seen corresponding path program 1 times [2024-11-14 04:04:36,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:36,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75039896] [2024-11-14 04:04:36,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:36,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:36,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:36,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:36,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-14 04:04:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:36,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:04:36,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:36,541 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 04:04:36,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:36,541 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:36,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75039896] [2024-11-14 04:04:36,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75039896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:36,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:36,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:04:36,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663519329] [2024-11-14 04:04:36,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:36,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:04:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:36,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:04:36,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:04:36,542 INFO L87 Difference]: Start difference. First operand 163 states and 248 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:36,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:36,758 INFO L93 Difference]: Finished difference Result 258 states and 351 transitions. [2024-11-14 04:04:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:04:36,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-14 04:04:36,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:36,760 INFO L225 Difference]: With dead ends: 258 [2024-11-14 04:04:36,760 INFO L226 Difference]: Without dead ends: 258 [2024-11-14 04:04:36,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:04:36,761 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 148 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:36,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 210 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:04:36,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-14 04:04:36,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 197. [2024-11-14 04:04:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 159 states have (on average 1.6603773584905661) internal successors, (264), 182 states have internal predecessors, (264), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-14 04:04:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 295 transitions. [2024-11-14 04:04:36,789 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 295 transitions. Word has length 9 [2024-11-14 04:04:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:36,790 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 295 transitions. [2024-11-14 04:04:36,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 295 transitions. [2024-11-14 04:04:36,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 04:04:36,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:36,792 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:36,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-14 04:04:36,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:36,995 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:36,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:36,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1810569660, now seen corresponding path program 1 times [2024-11-14 04:04:36,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:36,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580677250] [2024-11-14 04:04:36,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:36,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:36,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:37,001 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:37,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-14 04:04:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:37,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:04:37,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:37,202 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 04:04:37,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:37,202 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:37,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580677250] [2024-11-14 04:04:37,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580677250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:37,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:37,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:04:37,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552768412] [2024-11-14 04:04:37,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:37,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:04:37,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:37,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:04:37,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:04:37,204 INFO L87 Difference]: Start difference. First operand 197 states and 295 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:37,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:37,424 INFO L93 Difference]: Finished difference Result 247 states and 318 transitions. [2024-11-14 04:04:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:04:37,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 04:04:37,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:37,427 INFO L225 Difference]: With dead ends: 247 [2024-11-14 04:04:37,427 INFO L226 Difference]: Without dead ends: 247 [2024-11-14 04:04:37,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:04:37,428 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 183 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:37,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 210 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:04:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-14 04:04:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 211. [2024-11-14 04:04:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 172 states have (on average 1.6569767441860466) internal successors, (285), 196 states have internal predecessors, (285), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-14 04:04:37,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 316 transitions. [2024-11-14 04:04:37,440 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 316 transitions. Word has length 10 [2024-11-14 04:04:37,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:37,440 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 316 transitions. [2024-11-14 04:04:37,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:37,440 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 316 transitions. [2024-11-14 04:04:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 04:04:37,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:37,441 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:37,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-14 04:04:37,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:37,641 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:37,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:37,642 INFO L85 PathProgramCache]: Analyzing trace with hash -381204798, now seen corresponding path program 1 times [2024-11-14 04:04:37,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:37,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525091758] [2024-11-14 04:04:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:37,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:37,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:37,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:37,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-14 04:04:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:37,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:04:37,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:37,938 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 04:04:37,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:38,242 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 04:04:38,242 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525091758] [2024-11-14 04:04:38,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525091758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [440901507] [2024-11-14 04:04:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:38,243 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:04:38,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:04:38,247 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:04:38,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-14 04:04:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:38,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:04:38,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:38,587 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 04:04:38,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:38,767 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 04:04:38,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [440901507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:38,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34116510] [2024-11-14 04:04:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:38,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:38,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:38,771 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:38,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 04:04:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:38,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:04:38,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:39,023 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 04:04:39,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:39,193 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 04:04:39,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34116510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:39,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:04:39,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 6 [2024-11-14 04:04:39,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27690214] [2024-11-14 04:04:39,194 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:04:39,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:04:39,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:39,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:04:39,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:04:39,195 INFO L87 Difference]: Start difference. First operand 211 states and 316 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:39,649 INFO L93 Difference]: Finished difference Result 282 states and 373 transitions. [2024-11-14 04:04:39,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:04:39,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 04:04:39,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:39,652 INFO L225 Difference]: With dead ends: 282 [2024-11-14 04:04:39,652 INFO L226 Difference]: Without dead ends: 282 [2024-11-14 04:04:39,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:04:39,653 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 224 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:39,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 246 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:04:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-14 04:04:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 241. [2024-11-14 04:04:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 202 states have (on average 1.6485148514851484) internal successors, (333), 226 states have internal predecessors, (333), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-14 04:04:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 364 transitions. [2024-11-14 04:04:39,667 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 364 transitions. Word has length 14 [2024-11-14 04:04:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:39,667 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 364 transitions. [2024-11-14 04:04:39,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:39,668 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 364 transitions. [2024-11-14 04:04:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 04:04:39,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:39,668 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:39,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 04:04:39,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-14 04:04:40,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-11-14 04:04:40,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:04:40,270 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:40,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:40,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1067553100, now seen corresponding path program 1 times [2024-11-14 04:04:40,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:40,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526565859] [2024-11-14 04:04:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:40,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:40,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:40,277 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:40,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-14 04:04:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:40,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:04:40,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:40,600 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 04:04:40,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:40,770 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 04:04:40,770 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:40,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526565859] [2024-11-14 04:04:40,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526565859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:40,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [660537612] [2024-11-14 04:04:40,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:40,770 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:04:40,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:04:40,777 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:04:40,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-14 04:04:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:40,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:04:40,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:41,294 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 04:04:41,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:41,373 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 04:04:41,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [660537612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:41,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117080986] [2024-11-14 04:04:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:41,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:41,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:41,376 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:41,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 04:04:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:41,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:04:41,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:41,885 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 04:04:41,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:42,358 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 04:04:42,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117080986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:42,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:04:42,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 18 [2024-11-14 04:04:42,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054784701] [2024-11-14 04:04:42,358 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:04:42,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 04:04:42,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 04:04:42,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:04:42,360 INFO L87 Difference]: Start difference. First operand 241 states and 364 transitions. Second operand has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 19 states have internal predecessors, (68), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:43,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:43,942 INFO L93 Difference]: Finished difference Result 378 states and 546 transitions. [2024-11-14 04:04:43,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:04:43,943 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 19 states have internal predecessors, (68), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 04:04:43,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:43,944 INFO L225 Difference]: With dead ends: 378 [2024-11-14 04:04:43,945 INFO L226 Difference]: Without dead ends: 378 [2024-11-14 04:04:43,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2024-11-14 04:04:43,946 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 463 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:43,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 395 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 04:04:43,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-14 04:04:43,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 300. [2024-11-14 04:04:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 261 states have (on average 1.6360153256704981) internal successors, (427), 285 states have internal predecessors, (427), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-14 04:04:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 458 transitions. [2024-11-14 04:04:43,958 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 458 transitions. Word has length 15 [2024-11-14 04:04:43,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:43,959 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 458 transitions. [2024-11-14 04:04:43,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 19 states have internal predecessors, (68), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 458 transitions. [2024-11-14 04:04:43,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 04:04:43,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:43,960 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:43,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 04:04:44,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-14 04:04:44,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-14 04:04:44,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:44,565 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:44,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1265592223, now seen corresponding path program 1 times [2024-11-14 04:04:44,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:44,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121193270] [2024-11-14 04:04:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:44,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:44,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:44,570 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:44,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-14 04:04:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:44,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:04:44,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:44,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:45,160 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:45,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121193270] [2024-11-14 04:04:45,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121193270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:45,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1336609253] [2024-11-14 04:04:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:45,161 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:04:45,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:04:45,162 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:04:45,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-14 04:04:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:45,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:04:45,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:45,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:45,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1336609253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:45,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820678040] [2024-11-14 04:04:45,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:45,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:45,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:45,637 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:45,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 04:04:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:45,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:04:45,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:46,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:46,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820678040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:46,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:04:46,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 15 [2024-11-14 04:04:46,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004976496] [2024-11-14 04:04:46,632 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:04:46,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 04:04:46,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:46,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 04:04:46,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:04:46,634 INFO L87 Difference]: Start difference. First operand 300 states and 458 transitions. Second operand has 17 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:48,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:48,460 INFO L93 Difference]: Finished difference Result 545 states and 748 transitions. [2024-11-14 04:04:48,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 04:04:48,461 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-14 04:04:48,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:48,463 INFO L225 Difference]: With dead ends: 545 [2024-11-14 04:04:48,463 INFO L226 Difference]: Without dead ends: 545 [2024-11-14 04:04:48,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2024-11-14 04:04:48,464 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 561 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:48,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 632 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 04:04:48,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-14 04:04:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 425. [2024-11-14 04:04:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 382 states have (on average 1.6570680628272252) internal successors, (633), 406 states have internal predecessors, (633), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2024-11-14 04:04:48,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 675 transitions. [2024-11-14 04:04:48,484 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 675 transitions. Word has length 16 [2024-11-14 04:04:48,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:48,484 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 675 transitions. [2024-11-14 04:04:48,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:48,484 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 675 transitions. [2024-11-14 04:04:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 04:04:48,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:48,485 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:48,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 04:04:48,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-14 04:04:48,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-14 04:04:49,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:04:49,086 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:49,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1438689731, now seen corresponding path program 1 times [2024-11-14 04:04:49,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:49,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785972458] [2024-11-14 04:04:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:49,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:49,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:49,089 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:49,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-14 04:04:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:49,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:04:49,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:49,176 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 04:04:49,176 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:49,176 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:49,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785972458] [2024-11-14 04:04:49,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785972458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:49,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:49,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 04:04:49,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148276649] [2024-11-14 04:04:49,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:49,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:04:49,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:49,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:04:49,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:49,177 INFO L87 Difference]: Start difference. First operand 425 states and 675 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:49,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:49,204 INFO L93 Difference]: Finished difference Result 609 states and 963 transitions. [2024-11-14 04:04:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:04:49,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 04:04:49,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:49,207 INFO L225 Difference]: With dead ends: 609 [2024-11-14 04:04:49,208 INFO L226 Difference]: Without dead ends: 609 [2024-11-14 04:04:49,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 04:04:49,209 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 55 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:49,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 116 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:04:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2024-11-14 04:04:49,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 593. [2024-11-14 04:04:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 541 states have (on average 1.643253234750462) internal successors, (889), 567 states have internal predecessors, (889), 15 states have call successors, (15), 10 states have call predecessors, (15), 14 states have return successors, (57), 15 states have call predecessors, (57), 15 states have call successors, (57) [2024-11-14 04:04:49,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 961 transitions. [2024-11-14 04:04:49,232 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 961 transitions. Word has length 18 [2024-11-14 04:04:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:49,232 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 961 transitions. [2024-11-14 04:04:49,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:49,232 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 961 transitions. [2024-11-14 04:04:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 04:04:49,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:49,233 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:49,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-14 04:04:49,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:49,434 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:49,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:49,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1438689987, now seen corresponding path program 1 times [2024-11-14 04:04:49,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:49,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187688053] [2024-11-14 04:04:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:49,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:49,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:49,436 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:49,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-14 04:04:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:49,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:04:49,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:49,574 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 04:04:49,574 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:49,574 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:49,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187688053] [2024-11-14 04:04:49,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187688053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:49,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:49,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:04:49,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145529524] [2024-11-14 04:04:49,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:49,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:04:49,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:49,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:04:49,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:49,575 INFO L87 Difference]: Start difference. First operand 593 states and 961 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:49,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:49,623 INFO L93 Difference]: Finished difference Result 635 states and 991 transitions. [2024-11-14 04:04:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:04:49,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 04:04:49,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:49,626 INFO L225 Difference]: With dead ends: 635 [2024-11-14 04:04:49,626 INFO L226 Difference]: Without dead ends: 635 [2024-11-14 04:04:49,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 04:04:49,627 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 35 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:49,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 117 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:04:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2024-11-14 04:04:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 620. [2024-11-14 04:04:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 566 states have (on average 1.6289752650176679) internal successors, (922), 593 states have internal predecessors, (922), 15 states have call successors, (15), 11 states have call predecessors, (15), 16 states have return successors, (51), 15 states have call predecessors, (51), 15 states have call successors, (51) [2024-11-14 04:04:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 988 transitions. [2024-11-14 04:04:49,649 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 988 transitions. Word has length 18 [2024-11-14 04:04:49,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:49,649 INFO L471 AbstractCegarLoop]: Abstraction has 620 states and 988 transitions. [2024-11-14 04:04:49,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 988 transitions. [2024-11-14 04:04:49,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 04:04:49,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:49,650 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:49,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2024-11-14 04:04:49,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:49,852 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:49,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:49,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1649708773, now seen corresponding path program 1 times [2024-11-14 04:04:49,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:49,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968160397] [2024-11-14 04:04:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:49,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:49,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:49,857 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:49,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-14 04:04:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:49,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:04:49,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:50,015 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 04:04:50,015 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:50,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:50,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968160397] [2024-11-14 04:04:50,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968160397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:50,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:50,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 04:04:50,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375571991] [2024-11-14 04:04:50,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:50,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:04:50,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:50,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:04:50,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:50,017 INFO L87 Difference]: Start difference. First operand 620 states and 988 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:50,075 INFO L93 Difference]: Finished difference Result 635 states and 988 transitions. [2024-11-14 04:04:50,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:04:50,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-14 04:04:50,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:50,078 INFO L225 Difference]: With dead ends: 635 [2024-11-14 04:04:50,079 INFO L226 Difference]: Without dead ends: 635 [2024-11-14 04:04:50,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 04:04:50,079 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 32 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:50,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 118 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:04:50,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2024-11-14 04:04:50,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 620. [2024-11-14 04:04:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 566 states have (on average 1.6219081272084805) internal successors, (918), 593 states have internal predecessors, (918), 15 states have call successors, (15), 11 states have call predecessors, (15), 16 states have return successors, (51), 15 states have call predecessors, (51), 15 states have call successors, (51) [2024-11-14 04:04:50,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 984 transitions. [2024-11-14 04:04:50,100 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 984 transitions. Word has length 19 [2024-11-14 04:04:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:50,100 INFO L471 AbstractCegarLoop]: Abstraction has 620 states and 984 transitions. [2024-11-14 04:04:50,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 984 transitions. [2024-11-14 04:04:50,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 04:04:50,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:50,101 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 04:04:50,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-11-14 04:04:50,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:50,304 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:50,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash 437828489, now seen corresponding path program 2 times [2024-11-14 04:04:50,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:50,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046575199] [2024-11-14 04:04:50,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:04:50,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:50,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:50,306 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:50,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-14 04:04:50,372 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:04:50,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:04:50,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:04:50,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:50,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:51,225 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:51,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046575199] [2024-11-14 04:04:51,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046575199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:51,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1300962485] [2024-11-14 04:04:51,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:04:51,226 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:04:51,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:04:51,230 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:04:51,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-14 04:04:51,372 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:04:51,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:04:51,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:04:51,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:51,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:51,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1300962485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:51,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082080324] [2024-11-14 04:04:51,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:04:51,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:51,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:51,536 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:51,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 04:04:51,597 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:04:51,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:04:51,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:04:51,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:51,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:51,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082080324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:51,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:04:51,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 16 [2024-11-14 04:04:51,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497489885] [2024-11-14 04:04:51,661 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:04:51,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 04:04:51,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:51,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 04:04:51,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-14 04:04:51,662 INFO L87 Difference]: Start difference. First operand 620 states and 984 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:52,405 INFO L93 Difference]: Finished difference Result 491 states and 691 transitions. [2024-11-14 04:04:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:04:52,406 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-14 04:04:52,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:52,408 INFO L225 Difference]: With dead ends: 491 [2024-11-14 04:04:52,408 INFO L226 Difference]: Without dead ends: 491 [2024-11-14 04:04:52,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:04:52,409 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 216 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:52,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 393 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:04:52,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-14 04:04:52,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 458. [2024-11-14 04:04:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 404 states have (on average 1.4925742574257426) internal successors, (603), 431 states have internal predecessors, (603), 15 states have call successors, (15), 11 states have call predecessors, (15), 16 states have return successors, (51), 15 states have call predecessors, (51), 15 states have call successors, (51) [2024-11-14 04:04:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 669 transitions. [2024-11-14 04:04:52,426 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 669 transitions. Word has length 22 [2024-11-14 04:04:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:52,426 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 669 transitions. [2024-11-14 04:04:52,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:52,427 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 669 transitions. [2024-11-14 04:04:52,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 04:04:52,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:52,429 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:52,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2024-11-14 04:04:52,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2024-11-14 04:04:52,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-14 04:04:53,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:53,030 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:53,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash 276656329, now seen corresponding path program 1 times [2024-11-14 04:04:53,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:53,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516062872] [2024-11-14 04:04:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:53,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:53,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:53,035 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:53,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-11-14 04:04:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:53,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:04:53,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:53,129 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:53,129 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:53,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516062872] [2024-11-14 04:04:53,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516062872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:53,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:53,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:04:53,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997376166] [2024-11-14 04:04:53,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:53,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:04:53,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:53,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:04:53,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:53,133 INFO L87 Difference]: Start difference. First operand 458 states and 669 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:04:53,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:53,143 INFO L93 Difference]: Finished difference Result 341 states and 486 transitions. [2024-11-14 04:04:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:04:53,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-14 04:04:53,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:53,148 INFO L225 Difference]: With dead ends: 341 [2024-11-14 04:04:53,148 INFO L226 Difference]: Without dead ends: 341 [2024-11-14 04:04:53,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 04:04:53,148 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 9 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:53,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:04:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-14 04:04:53,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2024-11-14 04:04:53,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 296 states have (on average 1.5) internal successors, (444), 321 states have internal predecessors, (444), 11 states have call successors, (11), 8 states have call predecessors, (11), 11 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2024-11-14 04:04:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 486 transitions. [2024-11-14 04:04:53,165 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 486 transitions. Word has length 27 [2024-11-14 04:04:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:53,166 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 486 transitions. [2024-11-14 04:04:53,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:04:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 486 transitions. [2024-11-14 04:04:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 04:04:53,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:53,170 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:53,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2024-11-14 04:04:53,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:53,371 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:53,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:53,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1075966913, now seen corresponding path program 1 times [2024-11-14 04:04:53,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:53,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663227766] [2024-11-14 04:04:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:53,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:53,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:53,374 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:53,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-11-14 04:04:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:53,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:04:53,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:53,603 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:53,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:53,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663227766] [2024-11-14 04:04:53,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663227766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:53,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:53,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:04:53,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324671174] [2024-11-14 04:04:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:53,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:04:53,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:04:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:04:53,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:04:53,604 INFO L87 Difference]: Start difference. First operand 341 states and 486 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:04:53,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:53,750 INFO L93 Difference]: Finished difference Result 372 states and 517 transitions. [2024-11-14 04:04:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:04:53,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-14 04:04:53,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:53,752 INFO L225 Difference]: With dead ends: 372 [2024-11-14 04:04:53,752 INFO L226 Difference]: Without dead ends: 372 [2024-11-14 04:04:53,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:04:53,753 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 83 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:53,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 213 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:04:53,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-14 04:04:53,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 359. [2024-11-14 04:04:53,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 314 states have (on average 1.4872611464968153) internal successors, (467), 339 states have internal predecessors, (467), 11 states have call successors, (11), 8 states have call predecessors, (11), 11 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2024-11-14 04:04:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 509 transitions. [2024-11-14 04:04:53,765 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 509 transitions. Word has length 28 [2024-11-14 04:04:53,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:53,765 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 509 transitions. [2024-11-14 04:04:53,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:04:53,766 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 509 transitions. [2024-11-14 04:04:53,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 04:04:53,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:53,766 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:53,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2024-11-14 04:04:53,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:53,967 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:04:53,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:53,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1366588429, now seen corresponding path program 1 times [2024-11-14 04:04:53,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:04:53,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039602350] [2024-11-14 04:04:53,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:53,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:04:53,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:04:53,971 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:04:53,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-14 04:04:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:54,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 04:04:54,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:54,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:04:54,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:04:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:54,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:57,178 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:04:57,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039602350] [2024-11-14 04:04:57,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039602350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:04:57,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1148704282] [2024-11-14 04:04:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:57,179 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:04:57,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:04:57,185 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:04:57,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-14 04:04:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:57,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 04:04:57,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:58,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:04:58,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:04:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:58,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:00,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1148704282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:05:00,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589782498] [2024-11-14 04:05:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:00,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:05:00,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:05:00,465 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:05:00,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-14 04:05:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:00,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 04:05:00,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:01,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:05:01,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:05:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:01,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:03,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589782498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:05:03,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:05:03,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 7 [2024-11-14 04:05:03,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202557901] [2024-11-14 04:05:03,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:05:03,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:05:03,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:05:03,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:05:03,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2024-11-14 04:05:03,404 INFO L87 Difference]: Start difference. First operand 359 states and 509 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:05:04,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:05:04,660 INFO L93 Difference]: Finished difference Result 392 states and 532 transitions. [2024-11-14 04:05:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:05:04,661 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-14 04:05:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:05:04,663 INFO L225 Difference]: With dead ends: 392 [2024-11-14 04:05:04,663 INFO L226 Difference]: Without dead ends: 392 [2024-11-14 04:05:04,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=152, Invalid=399, Unknown=1, NotChecked=0, Total=552 [2024-11-14 04:05:04,663 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 253 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:05:04,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 209 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:05:04,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-14 04:05:04,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 381. [2024-11-14 04:05:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 328 states have (on average 1.451219512195122) internal successors, (476), 359 states have internal predecessors, (476), 12 states have call successors, (12), 9 states have call predecessors, (12), 18 states have return successors, (42), 12 states have call predecessors, (42), 12 states have call successors, (42) [2024-11-14 04:05:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 530 transitions. [2024-11-14 04:05:04,675 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 530 transitions. Word has length 29 [2024-11-14 04:05:04,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:05:04,676 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 530 transitions. [2024-11-14 04:05:04,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:05:04,676 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 530 transitions. [2024-11-14 04:05:04,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 04:05:04,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:05:04,677 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:05:04,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2024-11-14 04:05:04,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-14 04:05:05,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2024-11-14 04:05:05,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:05:05,278 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:05:05,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:05:05,278 INFO L85 PathProgramCache]: Analyzing trace with hash -585431614, now seen corresponding path program 1 times [2024-11-14 04:05:05,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:05:05,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917697887] [2024-11-14 04:05:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:05,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:05:05,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:05:05,280 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:05:05,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-14 04:05:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:05,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:05:05,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:05,482 WARN L873 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (_ bv1 1)))) is different from true [2024-11-14 04:05:05,536 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 04:05:05,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 14 treesize of output 20 [2024-11-14 04:05:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:05,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:05,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:05:05,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917697887] [2024-11-14 04:05:05,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917697887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:05,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [225560972] [2024-11-14 04:05:05,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:05,951 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:05:05,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:05:05,953 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:05:05,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-14 04:05:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:06,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:05:06,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:06,275 WARN L873 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (select |c_#valid| |parse_input_c1_~x~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2024-11-14 04:05:06,433 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-14 04:05:06,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-11-14 04:05:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:06,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:06,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [225560972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:06,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675733451] [2024-11-14 04:05:06,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:06,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:05:06,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:05:06,958 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:05:06,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-14 04:05:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:07,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:05:07,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:07,252 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 04:05:07,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 04:05:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:07,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:07,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675733451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:07,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:05:07,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 5, 4] total 12 [2024-11-14 04:05:07,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293652854] [2024-11-14 04:05:07,594 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:05:07,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 04:05:07,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:05:07,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 04:05:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=93, Unknown=2, NotChecked=42, Total=182 [2024-11-14 04:05:07,595 INFO L87 Difference]: Start difference. First operand 381 states and 530 transitions. Second operand has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 10 states have internal predecessors, (67), 2 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 04:05:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:05:10,584 INFO L93 Difference]: Finished difference Result 520 states and 674 transitions. [2024-11-14 04:05:10,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:05:10,585 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 10 states have internal predecessors, (67), 2 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2024-11-14 04:05:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:05:10,587 INFO L225 Difference]: With dead ends: 520 [2024-11-14 04:05:10,587 INFO L226 Difference]: Without dead ends: 520 [2024-11-14 04:05:10,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 155 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=154, Invalid=354, Unknown=6, NotChecked=86, Total=600 [2024-11-14 04:05:10,588 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 396 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 368 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:05:10,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 373 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 281 Invalid, 0 Unknown, 368 Unchecked, 0.6s Time] [2024-11-14 04:05:10,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-14 04:05:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 455. [2024-11-14 04:05:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 399 states have (on average 1.3909774436090225) internal successors, (555), 431 states have internal predecessors, (555), 12 states have call successors, (12), 11 states have call predecessors, (12), 21 states have return successors, (41), 12 states have call predecessors, (41), 12 states have call successors, (41) [2024-11-14 04:05:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 608 transitions. [2024-11-14 04:05:10,602 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 608 transitions. Word has length 30 [2024-11-14 04:05:10,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:05:10,603 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 608 transitions. [2024-11-14 04:05:10,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 10 states have internal predecessors, (67), 2 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 04:05:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 608 transitions. [2024-11-14 04:05:10,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 04:05:10,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:05:10,604 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:05:10,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2024-11-14 04:05:10,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-14 04:05:11,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-11-14 04:05:11,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:05:11,205 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:05:11,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:05:11,205 INFO L85 PathProgramCache]: Analyzing trace with hash -968510801, now seen corresponding path program 1 times [2024-11-14 04:05:11,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:05:11,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172367553] [2024-11-14 04:05:11,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:11,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:05:11,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:05:11,207 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:05:11,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2024-11-14 04:05:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:11,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:05:11,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:11,447 WARN L873 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| (select |c_#length| |parse_input_c1_~x~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2024-11-14 04:05:11,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:05:11,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:05:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:11,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:11,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:05:11,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172367553] [2024-11-14 04:05:11,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172367553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:05:11,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1474268666] [2024-11-14 04:05:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:11,869 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:05:11,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:05:11,872 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:05:11,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-14 04:05:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:12,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:05:12,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:12,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:05:12,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:05:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:12,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:12,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1474268666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:05:12,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638007545] [2024-11-14 04:05:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:12,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:05:12,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:05:12,508 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:05:12,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-14 04:05:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:12,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:05:12,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:12,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:05:12,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:05:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:12,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638007545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:05:13,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:05:13,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-14 04:05:13,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798824530] [2024-11-14 04:05:13,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:05:13,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:05:13,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:05:13,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:05:13,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=82, Unknown=1, NotChecked=18, Total=132 [2024-11-14 04:05:13,150 INFO L87 Difference]: Start difference. First operand 455 states and 608 transitions. Second operand has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:05:14,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:05:14,010 INFO L93 Difference]: Finished difference Result 634 states and 790 transitions. [2024-11-14 04:05:14,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:05:14,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-11-14 04:05:14,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:05:14,014 INFO L225 Difference]: With dead ends: 634 [2024-11-14 04:05:14,014 INFO L226 Difference]: Without dead ends: 634 [2024-11-14 04:05:14,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=132, Invalid=291, Unknown=1, NotChecked=38, Total=462 [2024-11-14 04:05:14,015 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 327 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:05:14,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 229 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 191 Invalid, 0 Unknown, 249 Unchecked, 0.5s Time] [2024-11-14 04:05:14,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-14 04:05:14,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 564. [2024-11-14 04:05:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 503 states have (on average 1.3956262425447317) internal successors, (702), 539 states have internal predecessors, (702), 12 states have call successors, (12), 12 states have call predecessors, (12), 26 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-11-14 04:05:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 750 transitions. [2024-11-14 04:05:14,029 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 750 transitions. Word has length 31 [2024-11-14 04:05:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:05:14,029 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 750 transitions. [2024-11-14 04:05:14,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:05:14,030 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 750 transitions. [2024-11-14 04:05:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-14 04:05:14,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:05:14,030 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:05:14,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2024-11-14 04:05:14,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-14 04:05:14,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2024-11-14 04:05:14,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:05:14,631 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:05:14,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:05:14,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1961361480, now seen corresponding path program 1 times [2024-11-14 04:05:14,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:05:14,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034465852] [2024-11-14 04:05:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:14,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:05:14,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:05:14,634 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:05:14,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2024-11-14 04:05:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:14,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:05:14,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:15,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:16,062 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:05:16,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034465852] [2024-11-14 04:05:16,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034465852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:16,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [259277376] [2024-11-14 04:05:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:16,062 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:05:16,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:05:16,064 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:05:16,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-14 04:05:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:16,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:05:16,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:16,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 [2024-11-14 04:05:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 04:05:16,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:16,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [259277376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:05:16,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925844357] [2024-11-14 04:05:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:16,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:05:16,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:05:16,959 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:05:16,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-14 04:05:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:17,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:05:17,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:17,578 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-14 04:05:17,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 16 treesize of output 17 [2024-11-14 04:05:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:05:17,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:17,833 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 30 treesize of output 26 [2024-11-14 04:05:18,382 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 30 treesize of output 26 [2024-11-14 04:05:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:05:18,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925844357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:18,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-14 04:05:18,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 4, 5, 5] total 26 [2024-11-14 04:05:18,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582388982] [2024-11-14 04:05:18,465 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-14 04:05:18,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-14 04:05:18,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:05:18,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-14 04:05:18,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-11-14 04:05:18,467 INFO L87 Difference]: Start difference. First operand 564 states and 750 transitions. Second operand has 27 states, 27 states have (on average 5.37037037037037) internal successors, (145), 24 states have internal predecessors, (145), 8 states have call successors, (8), 8 states have call predecessors, (8), 5 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:05:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:05:23,846 INFO L93 Difference]: Finished difference Result 514 states and 612 transitions. [2024-11-14 04:05:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-14 04:05:23,847 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.37037037037037) internal successors, (145), 24 states have internal predecessors, (145), 8 states have call successors, (8), 8 states have call predecessors, (8), 5 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 36 [2024-11-14 04:05:23,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:05:23,848 INFO L225 Difference]: With dead ends: 514 [2024-11-14 04:05:23,849 INFO L226 Difference]: Without dead ends: 514 [2024-11-14 04:05:23,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=885, Invalid=3275, Unknown=0, NotChecked=0, Total=4160 [2024-11-14 04:05:23,850 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 888 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:05:23,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 437 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-14 04:05:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-11-14 04:05:23,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 388. [2024-11-14 04:05:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 344 states have (on average 1.377906976744186) internal successors, (474), 371 states have internal predecessors, (474), 8 states have call successors, (8), 8 states have call predecessors, (8), 15 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-11-14 04:05:23,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 499 transitions. [2024-11-14 04:05:23,861 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 499 transitions. Word has length 36 [2024-11-14 04:05:23,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:05:23,862 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 499 transitions. [2024-11-14 04:05:23,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.37037037037037) internal successors, (145), 24 states have internal predecessors, (145), 8 states have call successors, (8), 8 states have call predecessors, (8), 5 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:05:23,862 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 499 transitions. [2024-11-14 04:05:23,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 04:05:23,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:05:23,863 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:05:23,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2024-11-14 04:05:24,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-14 04:05:24,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-14 04:05:24,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:05:24,464 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:05:24,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:05:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1977086476, now seen corresponding path program 1 times [2024-11-14 04:05:24,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:05:24,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802582985] [2024-11-14 04:05:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:24,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:05:24,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:05:24,466 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:05:24,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2024-11-14 04:05:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:24,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:05:24,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:24,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:24,722 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:05:24,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802582985] [2024-11-14 04:05:24,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802582985] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:24,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2093960277] [2024-11-14 04:05:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:24,723 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:05:24,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:05:24,725 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:05:24,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-14 04:05:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:24,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:05:24,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:24,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:25,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2093960277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:25,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486550964] [2024-11-14 04:05:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:25,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:05:25,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:05:25,049 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:05:25,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-14 04:05:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:25,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:05:25,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:25,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:25,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486550964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:25,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:05:25,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 3 [2024-11-14 04:05:25,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649496576] [2024-11-14 04:05:25,274 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:05:25,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:05:25,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:05:25,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:05:25,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:05:25,276 INFO L87 Difference]: Start difference. First operand 388 states and 499 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:05:25,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:05:25,321 INFO L93 Difference]: Finished difference Result 385 states and 488 transitions. [2024-11-14 04:05:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:05:25,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-11-14 04:05:25,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:05:25,324 INFO L225 Difference]: With dead ends: 385 [2024-11-14 04:05:25,324 INFO L226 Difference]: Without dead ends: 385 [2024-11-14 04:05:25,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:05:25,325 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 52 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:05:25,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 112 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:05:25,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-14 04:05:25,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 379. [2024-11-14 04:05:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 338 states have (on average 1.3461538461538463) internal successors, (455), 362 states have internal predecessors, (455), 8 states have call successors, (8), 8 states have call predecessors, (8), 15 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-11-14 04:05:25,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 480 transitions. [2024-11-14 04:05:25,334 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 480 transitions. Word has length 40 [2024-11-14 04:05:25,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:05:25,334 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 480 transitions. [2024-11-14 04:05:25,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:05:25,334 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 480 transitions. [2024-11-14 04:05:25,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 04:05:25,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:05:25,335 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:05:25,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2024-11-14 04:05:25,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2024-11-14 04:05:25,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-14 04:05:25,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:05:25,936 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr20ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:05:25,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:05:25,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1160138508, now seen corresponding path program 1 times [2024-11-14 04:05:25,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:05:25,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902753700] [2024-11-14 04:05:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:25,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:05:25,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:05:25,939 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:05:25,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2024-11-14 04:05:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:26,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:05:26,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:26,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:26,446 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:05:26,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902753700] [2024-11-14 04:05:26,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902753700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:26,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [276315083] [2024-11-14 04:05:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:26,446 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:05:26,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:05:26,451 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:05:26,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2024-11-14 04:05:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:26,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:05:26,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:26,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:26,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [276315083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:26,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797581641] [2024-11-14 04:05:26,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:26,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:05:26,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:05:26,785 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:05:26,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-14 04:05:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:26,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:05:26,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:26,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:27,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797581641] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:27,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:05:27,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 6 [2024-11-14 04:05:27,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080298302] [2024-11-14 04:05:27,078 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:05:27,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:05:27,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:05:27,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:05:27,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:05:27,079 INFO L87 Difference]: Start difference. First operand 379 states and 480 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:05:27,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:05:27,312 INFO L93 Difference]: Finished difference Result 337 states and 406 transitions. [2024-11-14 04:05:27,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:05:27,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-11-14 04:05:27,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:05:27,314 INFO L225 Difference]: With dead ends: 337 [2024-11-14 04:05:27,314 INFO L226 Difference]: Without dead ends: 337 [2024-11-14 04:05:27,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:05:27,315 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 61 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:05:27,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 197 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:05:27,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-14 04:05:27,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 327. [2024-11-14 04:05:27,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 293 states have (on average 1.2935153583617747) internal successors, (379), 312 states have internal predecessors, (379), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-14 04:05:27,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 399 transitions. [2024-11-14 04:05:27,323 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 399 transitions. Word has length 41 [2024-11-14 04:05:27,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:05:27,323 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 399 transitions. [2024-11-14 04:05:27,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:05:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 399 transitions. [2024-11-14 04:05:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-14 04:05:27,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:05:27,324 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:05:27,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-14 04:05:27,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2024-11-14 04:05:27,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2024-11-14 04:05:27,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:05:27,925 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:05:27,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:05:27,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1604555274, now seen corresponding path program 1 times [2024-11-14 04:05:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:05:27,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139803673] [2024-11-14 04:05:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:27,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:05:27,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:05:27,928 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:05:27,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2024-11-14 04:05:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:28,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:05:28,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:28,048 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 6 treesize of output 7 [2024-11-14 04:05:28,140 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 04:05:28,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 14 treesize of output 20 [2024-11-14 04:05:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:28,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:28,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:05:28,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139803673] [2024-11-14 04:05:28,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139803673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:28,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1916394465] [2024-11-14 04:05:28,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:28,296 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:05:28,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:05:28,298 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:05:28,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-14 04:05:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:28,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:05:28,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:28,564 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 6 treesize of output 7 [2024-11-14 04:05:28,674 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 04:05:28,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 14 treesize of output 20 [2024-11-14 04:05:28,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:28,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:28,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1916394465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996307959] [2024-11-14 04:05:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:28,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:05:28,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:05:28,821 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:05:28,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-14 04:05:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:28,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:05:28,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:28,921 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 6 treesize of output 7 [2024-11-14 04:05:29,019 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 04:05:29,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 04:05:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:29,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996307959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:29,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:05:29,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 3 [2024-11-14 04:05:29,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299487504] [2024-11-14 04:05:29,172 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:05:29,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:05:29,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:05:29,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:05:29,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:05:29,173 INFO L87 Difference]: Start difference. First operand 327 states and 399 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:05:29,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:05:29,370 INFO L93 Difference]: Finished difference Result 339 states and 401 transitions. [2024-11-14 04:05:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:05:29,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2024-11-14 04:05:29,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:05:29,373 INFO L225 Difference]: With dead ends: 339 [2024-11-14 04:05:29,373 INFO L226 Difference]: Without dead ends: 339 [2024-11-14 04:05:29,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 5 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 04:05:29,375 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 31 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:05:29,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 143 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:05:29,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-14 04:05:29,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 327. [2024-11-14 04:05:29,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 293 states have (on average 1.2798634812286689) internal successors, (375), 312 states have internal predecessors, (375), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-14 04:05:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 395 transitions. [2024-11-14 04:05:29,387 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 395 transitions. Word has length 42 [2024-11-14 04:05:29,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:05:29,387 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 395 transitions. [2024-11-14 04:05:29,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:05:29,387 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 395 transitions. [2024-11-14 04:05:29,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 04:05:29,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:05:29,388 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:05:29,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-14 04:05:29,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (44)] Ended with exit code 0 [2024-11-14 04:05:29,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2024-11-14 04:05:29,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:05:29,993 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:05:29,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:05:29,993 INFO L85 PathProgramCache]: Analyzing trace with hash -149637379, now seen corresponding path program 1 times [2024-11-14 04:05:29,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:05:29,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004647947] [2024-11-14 04:05:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:29,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:05:29,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:05:29,995 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:05:29,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2024-11-14 04:05:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:30,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:05:30,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-14 04:05:30,101 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:05:30,101 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:05:30,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004647947] [2024-11-14 04:05:30,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004647947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:05:30,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:05:30,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:05:30,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050402498] [2024-11-14 04:05:30,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:05:30,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:05:30,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:05:30,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:05:30,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:05:30,102 INFO L87 Difference]: Start difference. First operand 327 states and 395 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:05:30,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:05:30,111 INFO L93 Difference]: Finished difference Result 299 states and 351 transitions. [2024-11-14 04:05:30,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:05:30,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2024-11-14 04:05:30,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:05:30,114 INFO L225 Difference]: With dead ends: 299 [2024-11-14 04:05:30,114 INFO L226 Difference]: Without dead ends: 299 [2024-11-14 04:05:30,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 04:05:30,114 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:05:30,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:05:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-14 04:05:30,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2024-11-14 04:05:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 269 states have (on average 1.2304832713754648) internal successors, (331), 284 states have internal predecessors, (331), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-14 04:05:30,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 351 transitions. [2024-11-14 04:05:30,121 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 351 transitions. Word has length 47 [2024-11-14 04:05:30,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:05:30,121 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 351 transitions. [2024-11-14 04:05:30,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:05:30,121 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 351 transitions. [2024-11-14 04:05:30,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 04:05:30,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:05:30,122 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:05:30,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2024-11-14 04:05:30,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:05:30,322 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:05:30,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:05:30,322 INFO L85 PathProgramCache]: Analyzing trace with hash -746846498, now seen corresponding path program 1 times [2024-11-14 04:05:30,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:05:30,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581943579] [2024-11-14 04:05:30,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:30,323 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:05:30,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:05:30,325 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:05:30,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2024-11-14 04:05:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:30,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 04:05:30,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:30,649 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 04:05:30,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-14 04:05:31,409 INFO L349 Elim1Store]: treesize reduction 67, result has 31.6 percent of original size [2024-11-14 04:05:31,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 89 [2024-11-14 04:05:31,624 INFO L349 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2024-11-14 04:05:31,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 78 [2024-11-14 04:05:31,690 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-14 04:05:31,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 15 [2024-11-14 04:05:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:31,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:31,887 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 04:05:31,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 66 treesize of output 63 [2024-11-14 04:05:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:36,885 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:05:36,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581943579] [2024-11-14 04:05:36,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581943579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:36,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [685716715] [2024-11-14 04:05:36,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:36,885 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:05:36,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:05:36,887 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:05:36,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2024-11-14 04:05:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:37,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 04:05:37,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:37,328 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 04:05:37,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-14 04:05:37,564 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 04:05:37,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 04:05:37,671 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-14 04:05:37,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 16 treesize of output 17 [2024-11-14 04:05:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:37,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:37,899 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 04:05:37,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 128 treesize of output 123 [2024-11-14 04:05:51,869 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 04:05:51,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 63 [2024-11-14 04:05:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:52,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [685716715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:52,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239295843] [2024-11-14 04:05:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:52,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:05:52,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:05:52,169 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:05:52,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-14 04:05:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:52,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:05:52,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:52,307 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 04:05:52,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-14 04:05:52,581 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 04:05:52,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 04:05:52,640 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-14 04:05:52,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 16 treesize of output 17 [2024-11-14 04:05:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:52,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:52,787 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 04:05:52,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 66 treesize of output 63 [2024-11-14 04:05:59,252 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 04:05:59,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 63 [2024-11-14 04:05:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:05:59,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239295843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:59,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:05:59,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8, 10, 7, 8] total 28 [2024-11-14 04:05:59,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712397707] [2024-11-14 04:05:59,379 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:05:59,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-14 04:05:59,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:05:59,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-14 04:05:59,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=644, Unknown=8, NotChecked=0, Total=812 [2024-11-14 04:05:59,380 INFO L87 Difference]: Start difference. First operand 299 states and 351 transitions. Second operand has 29 states, 27 states have (on average 6.481481481481482) internal successors, (175), 28 states have internal predecessors, (175), 5 states have call successors, (10), 10 states have call predecessors, (10), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 04:06:02,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:06:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:02,430 INFO L93 Difference]: Finished difference Result 309 states and 360 transitions. [2024-11-14 04:06:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:06:02,430 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 6.481481481481482) internal successors, (175), 28 states have internal predecessors, (175), 5 states have call successors, (10), 10 states have call predecessors, (10), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 51 [2024-11-14 04:06:02,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:02,432 INFO L225 Difference]: With dead ends: 309 [2024-11-14 04:06:02,432 INFO L226 Difference]: Without dead ends: 309 [2024-11-14 04:06:02,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 269 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=385, Invalid=1013, Unknown=8, NotChecked=0, Total=1406 [2024-11-14 04:06:02,433 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 254 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 76 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:02,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 148 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 190 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2024-11-14 04:06:02,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-14 04:06:02,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 298. [2024-11-14 04:06:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.2230483271375465) internal successors, (329), 283 states have internal predecessors, (329), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-14 04:06:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 349 transitions. [2024-11-14 04:06:02,440 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 349 transitions. Word has length 51 [2024-11-14 04:06:02,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:02,441 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 349 transitions. [2024-11-14 04:06:02,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 6.481481481481482) internal successors, (175), 28 states have internal predecessors, (175), 5 states have call successors, (10), 10 states have call predecessors, (10), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 04:06:02,441 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 349 transitions. [2024-11-14 04:06:02,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 04:06:02,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:02,442 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:02,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-14 04:06:02,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2024-11-14 04:06:02,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2024-11-14 04:06:03,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:06:03,043 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:06:03,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:03,043 INFO L85 PathProgramCache]: Analyzing trace with hash -746846497, now seen corresponding path program 1 times [2024-11-14 04:06:03,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:06:03,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589667639] [2024-11-14 04:06:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:03,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:06:03,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:06:03,046 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:06:03,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2024-11-14 04:06:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:03,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:06:03,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:03,486 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 04:06:03,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-14 04:06:03,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:06:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:03,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:04,075 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 04:06:04,078 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 22 treesize of output 18 [2024-11-14 04:06:06,827 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 04:06:06,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 14 [2024-11-14 04:06:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:06:07,321 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:06:07,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589667639] [2024-11-14 04:06:07,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589667639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:07,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [110567162] [2024-11-14 04:06:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:07,321 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:06:07,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:06:07,324 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:06:07,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2024-11-14 04:06:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:07,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 04:06:07,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:08,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:06:08,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:06:08,588 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 04:06:08,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-14 04:06:08,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:06:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:09,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:09,183 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 04:06:09,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 14 [2024-11-14 04:06:14,119 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 04:06:14,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 14 [2024-11-14 04:06:18,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [110567162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:18,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490782800] [2024-11-14 04:06:18,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:18,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:18,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:18,582 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:18,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-14 04:06:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:18,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:06:18,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:19,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:06:19,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:06:19,308 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 04:06:19,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-14 04:06:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:06:19,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:06:19,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490782800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:06:19,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:06:19,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7, 8] total 26 [2024-11-14 04:06:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821898778] [2024-11-14 04:06:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:06:19,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:06:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:06:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:06:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=722, Unknown=8, NotChecked=0, Total=930 [2024-11-14 04:06:19,460 INFO L87 Difference]: Start difference. First operand 298 states and 349 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:06:19,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:19,885 INFO L93 Difference]: Finished difference Result 309 states and 352 transitions. [2024-11-14 04:06:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:06:19,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2024-11-14 04:06:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:19,886 INFO L225 Difference]: With dead ends: 309 [2024-11-14 04:06:19,886 INFO L226 Difference]: Without dead ends: 309 [2024-11-14 04:06:19,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 198 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=218, Invalid=766, Unknown=8, NotChecked=0, Total=992 [2024-11-14 04:06:19,887 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 157 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:19,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 97 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:06:19,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-14 04:06:19,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 298. [2024-11-14 04:06:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.204460966542751) internal successors, (324), 283 states have internal predecessors, (324), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-14 04:06:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 344 transitions. [2024-11-14 04:06:19,895 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 344 transitions. Word has length 51 [2024-11-14 04:06:19,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:19,895 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 344 transitions. [2024-11-14 04:06:19,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:06:19,895 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 344 transitions. [2024-11-14 04:06:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 04:06:19,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:19,896 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:19,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-14 04:06:20,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (51)] Ended with exit code 0 [2024-11-14 04:06:20,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2024-11-14 04:06:20,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:06:20,497 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:06:20,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:20,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1677404977, now seen corresponding path program 1 times [2024-11-14 04:06:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:06:20,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467405738] [2024-11-14 04:06:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:20,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:06:20,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:06:20,500 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:06:20,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2024-11-14 04:06:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:20,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 04:06:20,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:21,134 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 04:06:21,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 04:06:22,349 INFO L349 Elim1Store]: treesize reduction 67, result has 31.6 percent of original size [2024-11-14 04:06:22,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 89 [2024-11-14 04:06:22,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2024-11-14 04:06:22,576 INFO L349 Elim1Store]: treesize reduction 59, result has 1.7 percent of original size [2024-11-14 04:06:22,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1 [2024-11-14 04:06:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:22,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:23,199 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:06:23,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467405738] [2024-11-14 04:06:23,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467405738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:23,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1616586328] [2024-11-14 04:06:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:23,199 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:06:23,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:06:23,201 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:06:23,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2024-11-14 04:06:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:23,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-14 04:06:23,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:24,006 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-14 04:06:24,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-11-14 04:06:24,914 INFO L349 Elim1Store]: treesize reduction 102, result has 23.3 percent of original size [2024-11-14 04:06:24,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 49 treesize of output 101 [2024-11-14 04:06:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:25,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:28,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1616586328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:28,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983707642] [2024-11-14 04:06:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:28,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:28,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:28,151 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:28,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-14 04:06:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:28,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 04:06:28,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:28,743 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 04:06:28,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-14 04:06:29,479 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 04:06:29,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 04:06:29,642 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-14 04:06:29,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 16 treesize of output 17 [2024-11-14 04:06:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:29,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:30,128 INFO L349 Elim1Store]: treesize reduction 7, result has 50.0 percent of original size [2024-11-14 04:06:30,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 98 treesize of output 91 [2024-11-14 04:06:32,894 INFO L349 Elim1Store]: treesize reduction 7, result has 82.1 percent of original size [2024-11-14 04:06:32,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 115 [2024-11-14 04:06:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:33,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983707642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:33,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2024-11-14 04:06:33,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12, 13] total 39 [2024-11-14 04:06:33,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495866140] [2024-11-14 04:06:33,872 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2024-11-14 04:06:33,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-14 04:06:33,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:06:33,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-14 04:06:33,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1577, Unknown=2, NotChecked=0, Total=1806 [2024-11-14 04:06:33,874 INFO L87 Difference]: Start difference. First operand 298 states and 344 transitions. Second operand has 41 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 33 states have internal predecessors, (132), 7 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-14 04:06:37,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:06:38,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:38,582 INFO L93 Difference]: Finished difference Result 310 states and 353 transitions. [2024-11-14 04:06:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 04:06:38,583 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 33 states have internal predecessors, (132), 7 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 52 [2024-11-14 04:06:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:38,584 INFO L225 Difference]: With dead ends: 310 [2024-11-14 04:06:38,584 INFO L226 Difference]: Without dead ends: 310 [2024-11-14 04:06:38,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=585, Invalid=2493, Unknown=2, NotChecked=0, Total=3080 [2024-11-14 04:06:38,585 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 280 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:38,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 234 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 461 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2024-11-14 04:06:38,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-14 04:06:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 298. [2024-11-14 04:06:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.1970260223048328) internal successors, (322), 283 states have internal predecessors, (322), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-14 04:06:38,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 342 transitions. [2024-11-14 04:06:38,591 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 342 transitions. Word has length 52 [2024-11-14 04:06:38,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:38,592 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 342 transitions. [2024-11-14 04:06:38,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 33 states have internal predecessors, (132), 7 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-14 04:06:38,592 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 342 transitions. [2024-11-14 04:06:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 04:06:38,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:38,593 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:38,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Ended with exit code 0 [2024-11-14 04:06:38,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (54)] Ended with exit code 0 [2024-11-14 04:06:39,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-14 04:06:39,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:39,194 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:06:39,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:39,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1576088444, now seen corresponding path program 1 times [2024-11-14 04:06:39,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:06:39,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72723374] [2024-11-14 04:06:39,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:39,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:06:39,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:06:39,197 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:06:39,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2024-11-14 04:06:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:39,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:06:39,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:39,419 WARN L873 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (select |c_#valid| |parse_input_c1_~x~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2024-11-14 04:06:39,581 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 04:06:39,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 04:06:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 2 not checked. [2024-11-14 04:06:39,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-14 04:06:40,334 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:06:40,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72723374] [2024-11-14 04:06:40,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72723374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:40,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [216353774] [2024-11-14 04:06:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:40,334 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:06:40,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:06:40,336 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:06:40,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2024-11-14 04:06:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:40,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 04:06:40,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:40,755 WARN L873 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (_ bv1 1)))) is different from true [2024-11-14 04:06:40,820 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-14 04:06:40,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2024-11-14 04:06:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 2 not checked. [2024-11-14 04:06:41,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-14 04:06:41,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [216353774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:41,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541498137] [2024-11-14 04:06:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:41,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:41,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:41,495 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:41,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-14 04:06:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:41,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:06:41,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:41,757 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 04:06:41,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 04:06:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 2 not checked. [2024-11-14 04:06:41,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-14 04:06:42,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541498137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:42,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:06:42,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 5, 4] total 12 [2024-11-14 04:06:42,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685723042] [2024-11-14 04:06:42,421 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:06:42,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 04:06:42,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:06:42,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 04:06:42,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=93, Unknown=2, NotChecked=42, Total=182 [2024-11-14 04:06:42,423 INFO L87 Difference]: Start difference. First operand 298 states and 342 transitions. Second operand has 14 states, 13 states have (on average 5.846153846153846) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 04:06:43,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:43,245 INFO L93 Difference]: Finished difference Result 310 states and 350 transitions. [2024-11-14 04:06:43,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:06:43,246 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.846153846153846) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 52 [2024-11-14 04:06:43,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:43,247 INFO L225 Difference]: With dead ends: 310 [2024-11-14 04:06:43,247 INFO L226 Difference]: Without dead ends: 310 [2024-11-14 04:06:43,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 287 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=357, Unknown=3, NotChecked=86, Total=600 [2024-11-14 04:06:43,249 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 260 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:43,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 228 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 195 Invalid, 0 Unknown, 252 Unchecked, 0.4s Time] [2024-11-14 04:06:43,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-14 04:06:43,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 298. [2024-11-14 04:06:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.1895910780669146) internal successors, (320), 283 states have internal predecessors, (320), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-14 04:06:43,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 340 transitions. [2024-11-14 04:06:43,255 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 340 transitions. Word has length 52 [2024-11-14 04:06:43,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:43,255 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 340 transitions. [2024-11-14 04:06:43,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.846153846153846) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 04:06:43,256 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 340 transitions. [2024-11-14 04:06:43,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 04:06:43,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:43,257 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:43,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (57)] Ended with exit code 0 [2024-11-14 04:06:43,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Ended with exit code 0 [2024-11-14 04:06:43,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-14 04:06:43,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:43,858 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:06:43,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:43,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1614101557, now seen corresponding path program 1 times [2024-11-14 04:06:43,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:06:43,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153107938] [2024-11-14 04:06:43,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:43,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:06:43,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:06:43,860 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:06:43,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2024-11-14 04:06:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:44,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 04:06:44,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:44,153 WARN L873 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| (select |c_#length| |parse_input_c1_~x~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2024-11-14 04:06:44,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:06:44,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:06:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2024-11-14 04:06:44,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:44,957 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:06:44,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153107938] [2024-11-14 04:06:44,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153107938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:44,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1423269641] [2024-11-14 04:06:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:44,957 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:06:44,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:06:44,962 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:06:44,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2024-11-14 04:06:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:45,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 04:06:45,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:45,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:06:45,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:06:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2024-11-14 04:06:45,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:46,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1423269641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:46,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575090477] [2024-11-14 04:06:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:46,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:46,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:46,010 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:46,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-14 04:06:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:46,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 04:06:46,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:46,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:06:46,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 04:06:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2024-11-14 04:06:46,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:46,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575090477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:46,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:06:46,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-14 04:06:46,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200886918] [2024-11-14 04:06:46,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:06:46,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:06:46,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:06:46,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:06:46,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=116, Unknown=1, NotChecked=22, Total=182 [2024-11-14 04:06:46,909 INFO L87 Difference]: Start difference. First operand 298 states and 340 transitions. Second operand has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:47,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:47,735 INFO L93 Difference]: Finished difference Result 311 states and 345 transitions. [2024-11-14 04:06:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:06:47,736 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2024-11-14 04:06:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:47,737 INFO L225 Difference]: With dead ends: 311 [2024-11-14 04:06:47,737 INFO L226 Difference]: Without dead ends: 311 [2024-11-14 04:06:47,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=382, Unknown=1, NotChecked=44, Total=600 [2024-11-14 04:06:47,737 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 164 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:47,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 168 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 128 Invalid, 0 Unknown, 105 Unchecked, 0.4s Time] [2024-11-14 04:06:47,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-14 04:06:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 297. [2024-11-14 04:06:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 269 states have (on average 1.1598513011152416) internal successors, (312), 282 states have internal predecessors, (312), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-14 04:06:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 332 transitions. [2024-11-14 04:06:47,743 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 332 transitions. Word has length 53 [2024-11-14 04:06:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:47,744 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 332 transitions. [2024-11-14 04:06:47,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 332 transitions. [2024-11-14 04:06:47,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 04:06:47,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:47,745 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:47,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (60)] Ended with exit code 0 [2024-11-14 04:06:47,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-11-14 04:06:48,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Ended with exit code 0 [2024-11-14 04:06:48,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:06:48,346 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-14 04:06:48,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:48,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1373445455, now seen corresponding path program 1 times [2024-11-14 04:06:48,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:06:48,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80475050] [2024-11-14 04:06:48,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:48,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:06:48,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:06:48,348 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:06:48,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2024-11-14 04:06:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:48,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 04:06:48,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:48,713 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 04:06:48,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-14 04:06:49,259 INFO L349 Elim1Store]: treesize reduction 44, result has 26.7 percent of original size [2024-11-14 04:06:49,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 29 [2024-11-14 04:06:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:51,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:51,854 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:06:51,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80475050] [2024-11-14 04:06:51,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80475050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:51,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [358074992] [2024-11-14 04:06:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:51,855 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:06:51,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:06:51,856 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:06:51,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2024-11-14 04:06:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:52,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 04:06:52,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:52,621 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-14 04:06:52,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-11-14 04:06:56,919 WARN L873 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= |c_#valid| (store (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (_ bv1 1)) |c_old(~global~0.base)| (select |c_#valid| |c_old(~global~0.base)|)))) is different from true [2024-11-14 04:06:57,028 INFO L349 Elim1Store]: treesize reduction 46, result has 36.1 percent of original size [2024-11-14 04:06:57,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 36 [2024-11-14 04:06:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-14 04:06:57,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:57,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [358074992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:57,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523067840] [2024-11-14 04:06:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:57,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:57,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:57,445 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:57,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b2b2a6-02e0-4a86-aeec-3dfc2d39a374/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-14 04:06:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:57,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 04:06:57,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:57,795 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 04:06:57,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 04:06:58,329 INFO L349 Elim1Store]: treesize reduction 67, result has 31.6 percent of original size [2024-11-14 04:06:58,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 89 [2024-11-14 04:06:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:58,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:07:02,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523067840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:07:02,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:07:02,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-14 04:07:02,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631046419] [2024-11-14 04:07:02,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:07:02,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 04:07:02,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:07:02,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 04:07:02,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=507, Unknown=6, NotChecked=46, Total=650 [2024-11-14 04:07:02,778 INFO L87 Difference]: Start difference. First operand 297 states and 332 transitions. Second operand has 21 states, 17 states have (on average 4.352941176470588) internal successors, (74), 15 states have internal predecessors, (74), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 04:07:04,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:10,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:12,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:14,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:16,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:18,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:20,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:22,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:24,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:26,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:28,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:30,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:32,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:34,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:36,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:38,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:40,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:42,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:44,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:46,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:48,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:50,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:52,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:54,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:56,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:58,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:00,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:02,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:04,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:06,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:08,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:10,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:12,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:14,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:16,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:18,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:20,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:22,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:29,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:31,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:33,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:35,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:37,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:39,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:41,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:43,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:45,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:47,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:49,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:51,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:53,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:55,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:57,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:59,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:01,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:03,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:05,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:07,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:09,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:11,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:13,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:15,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:17,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:19,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:21,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:23,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:25,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:27,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:33,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:35,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:41,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:43,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:45,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:47,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:49,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:51,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:53,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:55,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:57,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:10:08,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:10:10,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:10:12,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:10:14,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:10:38,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:10:40,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:10:42,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:10:44,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:10:46,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:10:48,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:10:58,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:00,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:08,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:10,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:12,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:14,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:16,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:18,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:20,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:22,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:24,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:26,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:28,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:30,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:32,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:34,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:36,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:38,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:40,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:42,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:44,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:46,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:48,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:50,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:52,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:54,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:56,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:11:58,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:00,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:02,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:04,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:06,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:08,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:11,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:13,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:15,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:17,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:19,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:21,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:23,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:25,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:27,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:29,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:31,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:33,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:35,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:37,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:39,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:41,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:43,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:45,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:47,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:49,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:51,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:53,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:55,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:57,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:12:59,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:01,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:03,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:05,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:07,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:09,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:11,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:13,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:15,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:17,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:19,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:21,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:23,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:25,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:27,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:29,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:31,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:33,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:35,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:37,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:39,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:41,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:43,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:45,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:47,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:49,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:51,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:53,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:55,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:13:57,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:14:05,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:14:07,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:14:13,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:14:15,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:14:17,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:14:19,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:14:21,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:14:23,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]