./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/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_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c3b06783378816ab028e38f9f4609990f4d1028238bbcb0e88638ebb644bb54d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:39:29,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:39:30,075 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 03:39:30,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:39:30,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:39:30,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:39:30,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:39:30,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:39:30,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:39:30,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:39:30,129 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:39:30,129 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:39:30,129 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:39:30,129 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:39:30,129 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:39:30,130 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:39:30,130 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:39:30,130 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:39:30,130 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:39:30,130 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:39:30,130 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:39:30,132 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:39:30,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:39:30,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:39:30,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:39:30,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:39:30,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:39:30,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:39:30,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:39:30,135 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:39:30,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:39:30,135 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:39:30,135 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:39:30,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:39:30,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:39:30,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:39:30,136 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:39:30,136 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:39:30,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:39:30,137 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:39:30,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:39:30,137 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:39:30,138 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:39:30,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:39:30,138 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_2d7e376d-f0c0-44c1-ae20-6d801efe16df/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 ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3b06783378816ab028e38f9f4609990f4d1028238bbcb0e88638ebb644bb54d [2024-11-14 03:39:30,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:39:30,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:39:30,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:39:30,473 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:39:30,474 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:39:30,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i Unable to find full path for "g++" [2024-11-14 03:39:32,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:39:33,748 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:39:33,749 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i [2024-11-14 03:39:33,799 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/data/7eee5ea42/f9eac8f244754d7c860cfecb5dd731b9/FLAG6f2013536 [2024-11-14 03:39:33,952 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/data/7eee5ea42/f9eac8f244754d7c860cfecb5dd731b9 [2024-11-14 03:39:33,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:39:33,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:39:33,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:39:33,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:39:33,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:39:33,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:39:33" (1/1) ... [2024-11-14 03:39:33,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7bfc8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:33, skipping insertion in model container [2024-11-14 03:39:33,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:39:33" (1/1) ... [2024-11-14 03:39:34,095 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:39:34,446 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4501,4514] [2024-11-14 03:39:34,455 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4561,4574] [2024-11-14 03:39:35,733 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:35,734 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:35,735 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:35,736 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:35,738 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:35,757 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:35,758 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:35,761 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:35,761 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:36,982 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:36,983 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:37,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:39:37,228 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:39:37,251 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4501,4514] [2024-11-14 03:39:37,255 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4561,4574] [2024-11-14 03:39:37,330 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:37,331 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:37,331 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:37,333 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:37,334 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:37,343 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:37,343 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:37,345 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:37,345 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:37,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2024-11-14 03:39:37,568 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:37,569 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 03:39:37,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2024-11-14 03:39:37,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:39:37,946 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:39:37,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37 WrapperNode [2024-11-14 03:39:37,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:39:37,948 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:39:37,948 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:39:37,949 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:39:37,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37" (1/1) ... [2024-11-14 03:39:38,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37" (1/1) ... [2024-11-14 03:39:38,173 INFO L138 Inliner]: procedures = 682, calls = 2791, calls flagged for inlining = 59, calls inlined = 7, statements flattened = 848 [2024-11-14 03:39:38,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:39:38,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:39:38,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:39:38,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:39:38,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37" (1/1) ... [2024-11-14 03:39:38,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37" (1/1) ... [2024-11-14 03:39:38,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37" (1/1) ... [2024-11-14 03:39:38,204 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37" (1/1) ... [2024-11-14 03:39:38,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37" (1/1) ... [2024-11-14 03:39:38,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37" (1/1) ... [2024-11-14 03:39:38,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37" (1/1) ... [2024-11-14 03:39:38,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37" (1/1) ... [2024-11-14 03:39:38,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:39:38,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:39:38,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:39:38,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:39:38,318 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37" (1/1) ... [2024-11-14 03:39:38,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:39:38,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:39:38,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:39:38,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:39:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-14 03:39:38,388 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-14 03:39:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-14 03:39:38,389 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-14 03:39:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-11-14 03:39:38,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-11-14 03:39:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:39:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-14 03:39:38,390 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-14 03:39:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-14 03:39:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 03:39:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 03:39:38,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 03:39:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:39:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:39:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 03:39:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:39:38,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:39:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-14 03:39:38,391 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-14 03:39:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-14 03:39:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2024-11-14 03:39:38,391 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2024-11-14 03:39:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 03:39:38,391 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 03:39:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 03:39:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 03:39:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 03:39:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-14 03:39:38,393 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-14 03:39:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-14 03:39:38,393 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-14 03:39:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:39:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:39:38,730 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:39:38,734 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:39:46,526 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2024-11-14 03:39:46,526 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:39:47,260 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:39:47,262 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 03:39:47,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:39:47 BoogieIcfgContainer [2024-11-14 03:39:47,262 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:39:47,265 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:39:47,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:39:47,271 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:39:47,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:39:33" (1/3) ... [2024-11-14 03:39:47,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3856f807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:39:47, skipping insertion in model container [2024-11-14 03:39:47,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:39:37" (2/3) ... [2024-11-14 03:39:47,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3856f807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:39:47, skipping insertion in model container [2024-11-14 03:39:47,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:39:47" (3/3) ... [2024-11-14 03:39:47,274 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_string_harness.i [2024-11-14 03:39:47,290 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:39:47,293 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_cursor_from_string_harness.i that has 11 procedures, 73 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 03:39:47,363 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:39:47,381 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@608df1b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:39:47,381 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:39:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-14 03:39:47,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 03:39:47,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:39:47,395 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:39:47,396 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:39:47,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:39:47,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2055841313, now seen corresponding path program 1 times [2024-11-14 03:39:47,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:39:47,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114725761] [2024-11-14 03:39:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:47,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:41:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:42:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 03:42:21,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:42:21,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114725761] [2024-11-14 03:42:21,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114725761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:42:21,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:42:21,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-14 03:42:21,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305744191] [2024-11-14 03:42:21,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:42:21,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 03:42:21,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:42:21,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 03:42:21,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2024-11-14 03:42:21,945 INFO L87 Difference]: Start difference. First operand has 73 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 17 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-14 03:42:24,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:26,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:28,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:31,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:33,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:35,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:38,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:40,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:42,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:45,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:47,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:49,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:52,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:54,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:56,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:42:58,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:43:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:43:03,031 INFO L93 Difference]: Finished difference Result 112 states and 142 transitions. [2024-11-14 03:43:03,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 03:43:03,038 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) Word has length 55 [2024-11-14 03:43:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:43:03,047 INFO L225 Difference]: With dead ends: 112 [2024-11-14 03:43:03,047 INFO L226 Difference]: Without dead ends: 74 [2024-11-14 03:43:03,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2024-11-14 03:43:03,054 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 5 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 2 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:43:03,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1035 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 344 Invalid, 16 Unknown, 0 Unchecked, 40.4s Time] [2024-11-14 03:43:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-14 03:43:03,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-14 03:43:03,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-14 03:43:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2024-11-14 03:43:03,107 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 55 [2024-11-14 03:43:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:43:03,107 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2024-11-14 03:43:03,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-14 03:43:03,108 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2024-11-14 03:43:03,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-14 03:43:03,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:43:03,111 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:43:03,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:43:03,111 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:43:03,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:43:03,112 INFO L85 PathProgramCache]: Analyzing trace with hash -954504042, now seen corresponding path program 1 times [2024-11-14 03:43:03,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:43:03,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251760212] [2024-11-14 03:43:03,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:43:03,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:45:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 03:48:33,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:33,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251760212] [2024-11-14 03:48:33,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251760212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:48:33,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857281075] [2024-11-14 03:48:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:33,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:48:33,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:48:33,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:48:33,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7e376d-f0c0-44c1-ae20-6d801efe16df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:50:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:14,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 7736 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-14 03:50:14,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:37,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:50:37,524 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-11-14 03:50:37,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 137 treesize of output 128 [2024-11-14 03:50:38,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2024-11-14 03:50:54,471 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-14 03:50:54,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-11-14 03:51:04,397 INFO L349 Elim1Store]: treesize reduction 444, result has 25.1 percent of original size [2024-11-14 03:51:04,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 17 new quantified variables, introduced 55 case distinctions, treesize of input 247 treesize of output 309 [2024-11-14 03:51:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 03:51:10,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:51:24,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857281075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:51:24,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1269872723] [2024-11-14 03:51:24,903 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2024-11-14 03:51:24,904 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:51:24,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:51:24,912 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:51:24,913 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs