./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_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_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/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_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/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_0b5bbe14-47c7-4e25-b619-979e69efe01b/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 71e5927fd394f7ee2b7e12cb164a1e2d1990ce0718c7f1e6f5935ec66026c1b2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:44:08,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:44:08,072 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-13 23:44:08,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:44:08,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:44:08,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:44:08,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:44:08,122 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:44:08,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:44:08,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:44:08,122 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:44:08,123 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:44:08,123 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:44:08,123 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:44:08,123 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:44:08,123 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:44:08,123 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:44:08,123 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:44:08,123 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:44:08,123 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:44:08,123 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:44:08,124 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:44:08,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:44:08,124 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:44:08,124 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:44:08,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:44:08,124 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:44:08,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:44:08,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:44:08,127 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:44:08,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:44:08,127 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:44:08,128 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:44:08,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:44:08,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:44:08,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:44:08,128 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:44:08,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:44:08,129 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:44:08,129 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:44:08,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:44:08,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:44:08,129 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:44:08,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:44:08,129 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_0b5bbe14-47c7-4e25-b619-979e69efe01b/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 -> 71e5927fd394f7ee2b7e12cb164a1e2d1990ce0718c7f1e6f5935ec66026c1b2 [2024-11-13 23:44:08,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:44:08,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:44:08,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:44:08,452 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:44:08,453 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:44:08,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i Unable to find full path for "g++" [2024-11-13 23:44:10,430 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:44:11,106 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:44:11,109 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i [2024-11-13 23:44:11,141 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/data/6ec2763e5/27771e0c51c643698b695ff46b054744/FLAG4e199d420 [2024-11-13 23:44:11,156 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/data/6ec2763e5/27771e0c51c643698b695ff46b054744 [2024-11-13 23:44:11,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:44:11,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:44:11,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:44:11,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:44:11,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:44:11,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:44:11" (1/1) ... [2024-11-13 23:44:11,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f0912f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:11, skipping insertion in model container [2024-11-13 23:44:11,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:44:11" (1/1) ... [2024-11-13 23:44:11,288 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:44:11,557 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_0b5bbe14-47c7-4e25-b619-979e69efe01b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4499,4512] [2024-11-13 23:44:11,565 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_0b5bbe14-47c7-4e25-b619-979e69efe01b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4559,4572] [2024-11-13 23:44:12,572 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:12,573 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:12,574 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:12,574 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:12,576 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:12,599 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:12,600 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:12,602 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:12,604 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,475 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,476 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:44:13,603 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:44:13,619 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_0b5bbe14-47c7-4e25-b619-979e69efe01b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4499,4512] [2024-11-13 23:44:13,624 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_0b5bbe14-47c7-4e25-b619-979e69efe01b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4559,4572] [2024-11-13 23:44:13,694 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,694 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,695 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,695 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,696 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,706 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,707 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,708 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,708 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,904 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8271] [2024-11-13 23:44:13,906 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,906 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:44:13,923 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8757-8768] [2024-11-13 23:44:13,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:44:14,220 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:44:14,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14 WrapperNode [2024-11-13 23:44:14,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:44:14,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:44:14,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:44:14,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:44:14,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14" (1/1) ... [2024-11-13 23:44:14,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14" (1/1) ... [2024-11-13 23:44:14,455 INFO L138 Inliner]: procedures = 679, calls = 2616, calls flagged for inlining = 62, calls inlined = 10, statements flattened = 900 [2024-11-13 23:44:14,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:44:14,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:44:14,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:44:14,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:44:14,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14" (1/1) ... [2024-11-13 23:44:14,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14" (1/1) ... [2024-11-13 23:44:14,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14" (1/1) ... [2024-11-13 23:44:14,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14" (1/1) ... [2024-11-13 23:44:14,546 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14" (1/1) ... [2024-11-13 23:44:14,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14" (1/1) ... [2024-11-13 23:44:14,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14" (1/1) ... [2024-11-13 23:44:14,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14" (1/1) ... [2024-11-13 23:44:14,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:44:14,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:44:14,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:44:14,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:44:14,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14" (1/1) ... [2024-11-13 23:44:14,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:44:14,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:44:14,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:44:14,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:44:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-13 23:44:14,666 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-13 23:44:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 23:44:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-13 23:44:14,667 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-13 23:44:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-13 23:44:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 23:44:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 23:44:14,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 23:44:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2024-11-13 23:44:14,668 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2024-11-13 23:44:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 23:44:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:44:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 23:44:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:44:14,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:44:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-13 23:44:14,669 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-13 23:44:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-13 23:44:14,669 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-13 23:44:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-13 23:44:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 23:44:14,670 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 23:44:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 23:44:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 23:44:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-13 23:44:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2024-11-13 23:44:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2024-11-13 23:44:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 23:44:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:44:15,052 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:44:15,054 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:44:21,923 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2024-11-13 23:44:21,923 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:44:23,453 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:44:23,456 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 23:44:23,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:44:23 BoogieIcfgContainer [2024-11-13 23:44:23,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:44:23,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:44:23,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:44:23,464 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:44:23,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:44:11" (1/3) ... [2024-11-13 23:44:23,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cd3e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:44:23, skipping insertion in model container [2024-11-13 23:44:23,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:44:14" (2/3) ... [2024-11-13 23:44:23,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cd3e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:44:23, skipping insertion in model container [2024-11-13 23:44:23,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:44:23" (3/3) ... [2024-11-13 23:44:23,467 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_trim_pred_harness.i [2024-11-13 23:44:23,488 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:44:23,492 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_cursor_trim_pred_harness.i that has 9 procedures, 97 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 23:44:23,564 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:44:23,581 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;@25c175a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:44:23,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:44:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-13 23:44:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 23:44:23,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:44:23,597 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 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] [2024-11-13 23:44:23,597 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:44:23,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:44:23,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2096077259, now seen corresponding path program 1 times [2024-11-13 23:44:23,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:44:23,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080093369] [2024-11-13 23:44:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:44:23,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:46:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:46:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 23:46:01,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:46:01,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080093369] [2024-11-13 23:46:01,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080093369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:46:01,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:46:01,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:46:01,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927786511] [2024-11-13 23:46:01,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:46:01,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 23:46:01,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:46:01,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 23:46:01,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:46:01,555 INFO L87 Difference]: Start difference. First operand has 97 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-13 23:46:03,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:46:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:46:04,223 INFO L93 Difference]: Finished difference Result 156 states and 227 transitions. [2024-11-13 23:46:04,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 23:46:04,225 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 51 [2024-11-13 23:46:04,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:46:04,233 INFO L225 Difference]: With dead ends: 156 [2024-11-13 23:46:04,233 INFO L226 Difference]: Without dead ends: 91 [2024-11-13 23:46:04,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:46:04,239 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:46:04,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2024-11-13 23:46:04,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-13 23:46:04,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-13 23:46:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 37 states have call successors, (37), 8 states have call predecessors, (37), 7 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 23:46:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2024-11-13 23:46:04,295 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 51 [2024-11-13 23:46:04,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:46:04,297 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2024-11-13 23:46:04,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-13 23:46:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2024-11-13 23:46:04,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 23:46:04,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:46:04,299 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 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] [2024-11-13 23:46:04,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:46:04,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:46:04,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:46:04,301 INFO L85 PathProgramCache]: Analyzing trace with hash -959730976, now seen corresponding path program 1 times [2024-11-13 23:46:04,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:46:04,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057476384] [2024-11-13 23:46:04,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:46:04,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:47:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:48:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-13 23:48:01,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:48:01,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057476384] [2024-11-13 23:48:01,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057476384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:48:01,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:48:01,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-13 23:48:01,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419856212] [2024-11-13 23:48:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:48:01,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 23:48:01,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:48:01,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 23:48:01,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-13 23:48:01,301 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-13 23:48:03,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:48:05,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:48:08,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:48:10,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:48:12,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:48:14,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:48:17,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:48:19,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:48:21,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:48:24,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:48:26,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:48:28,840 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 [] [2024-11-13 23:48:34,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:48:34,330 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2024-11-13 23:48:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 23:48:34,331 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 53 [2024-11-13 23:48:34,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:48:34,334 INFO L225 Difference]: With dead ends: 116 [2024-11-13 23:48:34,334 INFO L226 Difference]: Without dead ends: 114 [2024-11-13 23:48:34,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-13 23:48:34,335 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 75 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 57 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:48:34,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 868 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 519 Invalid, 12 Unknown, 0 Unchecked, 32.0s Time] [2024-11-13 23:48:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-13 23:48:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 100. [2024-11-13 23:48:34,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 54 states have internal predecessors, (61), 39 states have call successors, (39), 9 states have call predecessors, (39), 8 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-13 23:48:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2024-11-13 23:48:34,357 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 53 [2024-11-13 23:48:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:48:34,357 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2024-11-13 23:48:34,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-13 23:48:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2024-11-13 23:48:34,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 23:48:34,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:48:34,359 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 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] [2024-11-13 23:48:34,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 23:48:34,360 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:48:34,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:48:34,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1808615803, now seen corresponding path program 1 times [2024-11-13 23:48:34,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:48:34,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116510839] [2024-11-13 23:48:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:48:34,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:50:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 23:50:33,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:50:33,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116510839] [2024-11-13 23:50:33,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116510839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:50:33,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760083004] [2024-11-13 23:50:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:33,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:50:33,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:50:33,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:50:33,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5bbe14-47c7-4e25-b619-979e69efe01b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:52:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:52:19,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 7601 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-13 23:52:19,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:52:21,114 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 11 treesize of output 7 [2024-11-13 23:52:21,165 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 8 treesize of output 1 [2024-11-13 23:52:41,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:41,914 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 84 treesize of output 80 [2024-11-13 23:52:42,690 INFO L349 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2024-11-13 23:52:42,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 75 [2024-11-13 23:52:42,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:52:42,826 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 64 treesize of output 60 [2024-11-13 23:52:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 23:52:44,464 INFO L311 TraceCheckSpWp]: Computing backward predicates...