./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje --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 2db61bc8caac695a597c69165a9f1c31e5d6287353b2f48b5d9e2ea54ecf275c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:43:07,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:43:07,923 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 05:43:07,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:43:07,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:43:07,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:43:07,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:43:07,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:43:07,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:43:07,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:43:07,982 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:43:07,983 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:43:07,983 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:43:07,986 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:43:07,987 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:43:07,987 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:43:07,988 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:43:07,988 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:43:07,988 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:43:07,989 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:43:07,990 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:43:07,990 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:43:07,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:43:07,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:43:07,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:43:07,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:43:07,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:43:07,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:43:07,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:43:07,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:43:08,000 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:43:08,000 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:43:08,001 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:43:08,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:43:08,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:43:08,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:43:08,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:43:08,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:43:08,003 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:43:08,003 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:43:08,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:43:08,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:43:08,006 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:43:08,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:43:08,007 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2db61bc8caac695a597c69165a9f1c31e5d6287353b2f48b5d9e2ea54ecf275c [2024-11-09 05:43:08,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:43:08,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:43:08,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:43:08,434 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:43:08,435 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:43:08,436 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i Unable to find full path for "g++" [2024-11-09 05:43:10,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:43:11,397 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:43:11,397 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2024-11-09 05:43:11,452 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/data/b3645d919/a4f8b1c5240e47409702b34596997bc3/FLAG79b0d00ac [2024-11-09 05:43:11,796 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/data/b3645d919/a4f8b1c5240e47409702b34596997bc3 [2024-11-09 05:43:11,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:43:11,801 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:43:11,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:43:11,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:43:11,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:43:11,815 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:43:11" (1/1) ... [2024-11-09 05:43:11,816 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d700fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:11, skipping insertion in model container [2024-11-09 05:43:11,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:43:11" (1/1) ... [2024-11-09 05:43:12,004 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:43:12,416 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_5b6c8436-f759-4931-8a49-ee12ffe8870d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2024-11-09 05:43:12,428 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_5b6c8436-f759-4931-8a49-ee12ffe8870d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2024-11-09 05:43:13,805 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:13,809 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:13,810 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:13,811 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:13,813 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:13,834 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:13,835 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:13,838 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:13,839 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:14,988 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:14,993 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:15,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:43:15,239 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:43:15,266 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_5b6c8436-f759-4931-8a49-ee12ffe8870d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2024-11-09 05:43:15,267 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_5b6c8436-f759-4931-8a49-ee12ffe8870d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2024-11-09 05:43:15,340 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:15,341 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:15,342 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:15,342 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:15,343 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:15,353 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:15,358 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:15,359 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:15,360 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:15,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2024-11-09 05:43:15,572 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:15,573 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:43:15,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2024-11-09 05:43:15,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:43:16,026 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:43:16,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16 WrapperNode [2024-11-09 05:43:16,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:43:16,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:43:16,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:43:16,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:43:16,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,303 INFO L138 Inliner]: procedures = 680, calls = 2625, calls flagged for inlining = 63, calls inlined = 9, statements flattened = 863 [2024-11-09 05:43:16,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:43:16,308 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:43:16,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:43:16,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:43:16,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:43:16,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:43:16,428 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:43:16,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:43:16,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:43:16,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:43:16,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:43:16,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:43:16,518 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2024-11-09 05:43:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2024-11-09 05:43:16,520 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-09 05:43:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-09 05:43:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:43:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-09 05:43:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-09 05:43:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 05:43:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:43:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 05:43:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 05:43:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:43:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:43:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-11-09 05:43:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-11-09 05:43:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 05:43:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:43:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:43:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-09 05:43:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-09 05:43:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-09 05:43:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-09 05:43:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 05:43:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:43:16,526 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:43:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:43:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 05:43:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 05:43:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-09 05:43:16,527 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-09 05:43:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:43:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:43:16,927 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:43:16,930 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:43:24,765 INFO L? ?]: Removed 103 outVars from TransFormulas that were not future-live. [2024-11-09 05:43:24,765 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:43:26,069 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:43:26,070 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:43:26,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:43:26 BoogieIcfgContainer [2024-11-09 05:43:26,071 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:43:26,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:43:26,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:43:26,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:43:26,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:43:11" (1/3) ... [2024-11-09 05:43:26,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c3b510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:43:26, skipping insertion in model container [2024-11-09 05:43:26,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (2/3) ... [2024-11-09 05:43:26,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c3b510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:43:26, skipping insertion in model container [2024-11-09 05:43:26,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:43:26" (3/3) ... [2024-11-09 05:43:26,082 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_c_str_harness.i [2024-11-09 05:43:26,104 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:43:26,105 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:43:26,216 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:43:26,226 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;@c632085, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:43:26,228 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:43:26,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 56 states have internal predecessors, (68), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-09 05:43:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 05:43:26,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:43:26,248 INFO L215 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-09 05:43:26,249 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:43:26,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:43:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash 65804059, now seen corresponding path program 1 times [2024-11-09 05:43:26,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:43:26,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836610849] [2024-11-09 05:43:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:26,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:45:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:45:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 05:45:49,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:45:49,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836610849] [2024-11-09 05:45:49,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836610849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:45:49,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:45:49,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 05:45:49,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809400971] [2024-11-09 05:45:49,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:45:49,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 05:45:49,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:45:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 05:45:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:45:49,427 INFO L87 Difference]: Start difference. First operand has 96 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 56 states have internal predecessors, (68), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-09 05:45:51,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:53,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:56,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:58,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:00,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:03,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:05,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:07,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:10,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:12,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:14,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:17,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:21,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:46:21,600 INFO L93 Difference]: Finished difference Result 157 states and 217 transitions. [2024-11-09 05:46:21,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 05:46:21,602 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 80 [2024-11-09 05:46:21,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:46:21,620 INFO L225 Difference]: With dead ends: 157 [2024-11-09 05:46:21,621 INFO L226 Difference]: Without dead ends: 113 [2024-11-09 05:46:21,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-09 05:46:21,629 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 53 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 21 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:46:21,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 875 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 372 Invalid, 12 Unknown, 0 Unchecked, 31.2s Time] [2024-11-09 05:46:21,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-09 05:46:21,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 106. [2024-11-09 05:46:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 63 states have internal predecessors, (75), 33 states have call successors, (33), 10 states have call predecessors, (33), 11 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) [2024-11-09 05:46:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2024-11-09 05:46:21,693 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 141 transitions. Word has length 80 [2024-11-09 05:46:21,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:46:21,695 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 141 transitions. [2024-11-09 05:46:21,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-09 05:46:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 141 transitions. [2024-11-09 05:46:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 05:46:21,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:46:21,700 INFO L215 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-09 05:46:21,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:46:21,701 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:46:21,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:46:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash 532760515, now seen corresponding path program 1 times [2024-11-09 05:46:21,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:46:21,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26604159] [2024-11-09 05:46:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:46:21,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:48:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:48:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 05:48:51,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:48:51,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26604159] [2024-11-09 05:48:51,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26604159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:48:51,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959158037] [2024-11-09 05:48:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:48:51,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:48:51,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:48:51,508 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:48:51,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c8436-f759-4931-8a49-ee12ffe8870d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:50:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:32,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 7668 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-09 05:50:32,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:50:39,380 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 05:50:39,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 21 [2024-11-09 05:50:39,452 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 [2024-11-09 05:50:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:50:49,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:50:58,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2024-11-09 05:50:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 05:50:59,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959158037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:50:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1755244142] [2024-11-09 05:50:59,765 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2024-11-09 05:50:59,766 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:50:59,770 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:50:59,776 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:50:59,777 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs