./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/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_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/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_2bf46418-6dfd-493e-969c-4c69335f5fa0/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 60b7561cd9c1cc24d47924badc2bd864b522ccc42d310ee701ffae2771f101d1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:00:49,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:00:49,489 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 07:00:49,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:00:49,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:00:49,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:00:49,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:00:49,547 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:00:49,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:00:49,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:00:49,550 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:00:49,551 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:00:49,551 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:00:49,553 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:00:49,554 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:00:49,554 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:00:49,554 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:00:49,555 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:00:49,555 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:00:49,556 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:00:49,556 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:00:49,561 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:00:49,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:00:49,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:00:49,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:00:49,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:00:49,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:00:49,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:00:49,563 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:00:49,564 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:00:49,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:00:49,582 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:00:49,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:00:49,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:00:49,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:00:49,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:00:49,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:00:49,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:00:49,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:00:49,584 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:00:49,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:00:49,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:00:49,585 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:00:49,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:00:49,586 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_2bf46418-6dfd-493e-969c-4c69335f5fa0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60b7561cd9c1cc24d47924badc2bd864b522ccc42d310ee701ffae2771f101d1 [2024-11-09 07:00:49,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:00:49,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:00:49,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:00:49,933 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:00:49,934 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:00:49,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i Unable to find full path for "g++" [2024-11-09 07:00:51,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:00:52,548 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:00:52,549 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2024-11-09 07:00:52,608 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/data/1f9a4e4c0/59c1ca220bad436f9e22c22208edd393/FLAG0fe0e3af6 [2024-11-09 07:00:53,043 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/data/1f9a4e4c0/59c1ca220bad436f9e22c22208edd393 [2024-11-09 07:00:53,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:00:53,047 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:00:53,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:00:53,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:00:53,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:00:53,060 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:00:53" (1/1) ... [2024-11-09 07:00:53,061 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3885b24a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:53, skipping insertion in model container [2024-11-09 07:00:53,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:00:53" (1/1) ... [2024-11-09 07:00:53,157 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:00:53,481 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_2bf46418-6dfd-493e-969c-4c69335f5fa0/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4505,4518] [2024-11-09 07:00:53,491 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_2bf46418-6dfd-493e-969c-4c69335f5fa0/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4565,4578] [2024-11-09 07:00:54,721 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:54,722 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:54,722 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:54,723 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:54,725 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:54,742 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:54,743 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:54,745 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:54,774 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:55,791 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:55,793 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:55,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:00:56,006 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:00:56,027 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_2bf46418-6dfd-493e-969c-4c69335f5fa0/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4505,4518] [2024-11-09 07:00:56,032 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_2bf46418-6dfd-493e-969c-4c69335f5fa0/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4565,4578] [2024-11-09 07:00:56,105 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:56,106 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:56,107 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:56,107 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:56,108 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:56,119 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:56,122 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:56,124 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:56,125 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:56,306 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8271] [2024-11-09 07:00:56,308 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:56,353 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:00:56,369 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8757-8768] [2024-11-09 07:00:56,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:00:56,649 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:00:56,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56 WrapperNode [2024-11-09 07:00:56,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:00:56,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:00:56,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:00:56,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:00:56,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56" (1/1) ... [2024-11-09 07:00:56,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56" (1/1) ... [2024-11-09 07:00:56,862 INFO L138 Inliner]: procedures = 679, calls = 2616, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 803 [2024-11-09 07:00:56,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:00:56,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:00:56,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:00:56,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:00:56,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56" (1/1) ... [2024-11-09 07:00:56,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56" (1/1) ... [2024-11-09 07:00:56,894 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56" (1/1) ... [2024-11-09 07:00:56,895 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56" (1/1) ... [2024-11-09 07:00:56,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56" (1/1) ... [2024-11-09 07:00:56,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56" (1/1) ... [2024-11-09 07:00:56,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56" (1/1) ... [2024-11-09 07:00:56,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56" (1/1) ... [2024-11-09 07:00:56,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:00:56,989 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:00:56,989 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:00:56,989 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:00:56,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56" (1/1) ... [2024-11-09 07:00:57,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:00:57,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:00:57,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:00:57,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:00:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-09 07:00:57,069 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-09 07:00:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:00:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-09 07:00:57,069 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-09 07:00:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 07:00:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 07:00:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 07:00:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 07:00:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:00:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:00:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 07:00:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:00:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:00:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-09 07:00:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-09 07:00:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-09 07:00:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-09 07:00:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 07:00:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 07:00:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 07:00:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:00:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:00:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 07:00:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2024-11-09 07:00:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2024-11-09 07:00:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 07:00:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_right_trim_pred [2024-11-09 07:00:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_right_trim_pred [2024-11-09 07:00:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:00:57,332 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:00:57,335 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:01:04,345 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-11-09 07:01:04,345 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:01:05,655 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:01:05,655 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 07:01:05,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:01:05 BoogieIcfgContainer [2024-11-09 07:01:05,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:01:05,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:01:05,659 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:01:05,662 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:01:05,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:00:53" (1/3) ... [2024-11-09 07:01:05,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c19bdec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:01:05, skipping insertion in model container [2024-11-09 07:01:05,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:00:56" (2/3) ... [2024-11-09 07:01:05,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c19bdec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:01:05, skipping insertion in model container [2024-11-09 07:01:05,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:01:05" (3/3) ... [2024-11-09 07:01:05,666 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_right_trim_pred_harness.i [2024-11-09 07:01:05,687 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:01:05,688 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:01:05,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:01:05,771 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;@3c18cea3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:01:05,772 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:01:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-09 07:01:05,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 07:01:05,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:01:05,788 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 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 07:01:05,789 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:01:05,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:01:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1635995076, now seen corresponding path program 1 times [2024-11-09 07:01:05,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:01:05,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43524933] [2024-11-09 07:01:05,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:01:05,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:02:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:02:54,818 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 07:02:54,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:02:54,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43524933] [2024-11-09 07:02:54,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43524933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:02:54,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:02:54,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:02:54,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726194159] [2024-11-09 07:02:54,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:02:54,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 07:02:54,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:02:54,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 07:02:54,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:02:54,866 INFO L87 Difference]: Start difference. First operand has 70 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:02:57,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:02:57,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:02:57,624 INFO L93 Difference]: Finished difference Result 103 states and 139 transitions. [2024-11-09 07:02:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 07:02:57,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 40 [2024-11-09 07:02:57,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:02:57,638 INFO L225 Difference]: With dead ends: 103 [2024-11-09 07:02:57,638 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 07:02:57,641 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 [2024-11-09 07:02:57,645 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:02:57,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2024-11-09 07:02:57,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 07:02:57,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-09 07:02:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 07:02:57,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2024-11-09 07:02:57,694 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 40 [2024-11-09 07:02:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:02:57,696 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2024-11-09 07:02:57,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:02:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2024-11-09 07:02:57,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 07:02:57,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:02:57,700 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 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 07:02:57,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:02:57,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:02:57,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:02:57,701 INFO L85 PathProgramCache]: Analyzing trace with hash -861825625, now seen corresponding path program 1 times [2024-11-09 07:02:57,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:02:57,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56213033] [2024-11-09 07:02:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:02:57,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:07,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 07:05:07,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:05:07,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56213033] [2024-11-09 07:05:07,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56213033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:05:07,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:05:07,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 07:05:07,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135556586] [2024-11-09 07:05:07,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:05:07,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 07:05:07,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:05:07,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 07:05:07,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-09 07:05:07,799 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 07:05:10,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:12,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:14,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:17,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:19,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:21,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:24,015 WARN L539 Checker$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 07:05:26,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:28,635 WARN L539 Checker$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 07:05:30,931 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 07:05:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:05:35,118 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2024-11-09 07:05:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 07:05:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 42 [2024-11-09 07:05:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:05:35,122 INFO L225 Difference]: With dead ends: 89 [2024-11-09 07:05:35,123 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 07:05:35,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-11-09 07:05:35,124 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 50 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 32 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:05:35,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 503 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 329 Invalid, 10 Unknown, 0 Unchecked, 26.2s Time] [2024-11-09 07:05:35,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 07:05:35,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2024-11-09 07:05:35,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.175) internal successors, (47), 42 states have internal predecessors, (47), 24 states have call successors, (24), 9 states have call predecessors, (24), 8 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-09 07:05:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2024-11-09 07:05:35,160 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 42 [2024-11-09 07:05:35,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:05:35,161 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2024-11-09 07:05:35,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 07:05:35,162 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2024-11-09 07:05:35,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 07:05:35,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:05:35,165 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 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 07:05:35,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:05:35,166 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:05:35,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:05:35,170 INFO L85 PathProgramCache]: Analyzing trace with hash 941180370, now seen corresponding path program 1 times [2024-11-09 07:05:35,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:05:35,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274730757] [2024-11-09 07:05:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:35,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 07:07:51,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:51,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274730757] [2024-11-09 07:07:51,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274730757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:07:51,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866570657] [2024-11-09 07:07:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:51,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:51,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:51,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:51,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:09:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:46,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 7550 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-09 07:09:46,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:48,332 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 07:09:48,408 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 [2024-11-09 07:09:48,468 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 [2024-11-09 07:10:07,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:10:07,869 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 [2024-11-09 07:10:08,444 INFO L349 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2024-11-09 07:10:08,444 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 [2024-11-09 07:10:08,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:10:08,529 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 [2024-11-09 07:10:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:10:09,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:10:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866570657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:10:09,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:10:09,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [15] total 35 [2024-11-09 07:10:09,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897735967] [2024-11-09 07:10:09,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:10:09,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 07:10:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:10:09,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 07:10:09,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1077, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 07:10:09,986 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand has 22 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 16 states have internal predecessors, (26), 8 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 07:10:12,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:10:14,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:10:16,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:10:19,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:10:21,404 WARN L539 Checker$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 07:10:23,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:10:26,054 WARN L539 Checker$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 07:10:28,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:10:30,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:10:32,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:10:35,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:10:38,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:10:40,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:10:42,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:10:45,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:10:47,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:10:49,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:11:03,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:11:03,431 INFO L93 Difference]: Finished difference Result 140 states and 173 transitions. [2024-11-09 07:11:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 07:11:03,432 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 16 states have internal predecessors, (26), 8 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) Word has length 46 [2024-11-09 07:11:03,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:11:03,440 INFO L225 Difference]: With dead ends: 140 [2024-11-09 07:11:03,440 INFO L226 Difference]: Without dead ends: 138 [2024-11-09 07:11:03,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 20 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=209, Invalid=1861, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 07:11:03,443 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 71 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 48 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:11:03,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 620 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 886 Invalid, 17 Unknown, 0 Unchecked, 48.5s Time] [2024-11-09 07:11:03,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-09 07:11:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 128. [2024-11-09 07:11:03,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 73 states have internal predecessors, (81), 41 states have call successors, (41), 18 states have call predecessors, (41), 16 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) [2024-11-09 07:11:03,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 160 transitions. [2024-11-09 07:11:03,504 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 160 transitions. Word has length 46 [2024-11-09 07:11:03,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:11:03,505 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 160 transitions. [2024-11-09 07:11:03,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 16 states have internal predecessors, (26), 8 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 07:11:03,506 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 160 transitions. [2024-11-09 07:11:03,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 07:11:03,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:11:03,509 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 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] [2024-11-09 07:11:03,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 07:11:03,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:11:03,710 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:11:03,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:11:03,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1044990428, now seen corresponding path program 1 times [2024-11-09 07:11:03,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:11:03,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428676426] [2024-11-09 07:11:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:11:03,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 07:12:54,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:54,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428676426] [2024-11-09 07:12:54,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428676426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:54,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:54,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:12:54,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481992958] [2024-11-09 07:12:54,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:54,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:54,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:54,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:54,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:54,513 INFO L87 Difference]: Start difference. First operand 128 states and 160 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:12:56,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:59,027 WARN L539 Checker$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 07:12:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:59,559 INFO L93 Difference]: Finished difference Result 164 states and 207 transitions. [2024-11-09 07:12:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:59,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2024-11-09 07:12:59,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:59,561 INFO L225 Difference]: With dead ends: 164 [2024-11-09 07:12:59,561 INFO L226 Difference]: Without dead ends: 130 [2024-11-09 07:12:59,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:59,563 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:59,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2024-11-09 07:12:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-09 07:12:59,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-09 07:12:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 75 states have internal predecessors, (82), 41 states have call successors, (41), 18 states have call predecessors, (41), 16 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) [2024-11-09 07:12:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 161 transitions. [2024-11-09 07:12:59,600 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 161 transitions. Word has length 45 [2024-11-09 07:12:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:59,601 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 161 transitions. [2024-11-09 07:12:59,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:12:59,602 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 161 transitions. [2024-11-09 07:12:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 07:12:59,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:59,603 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:59,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:12:59,604 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:59,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:59,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1535583697, now seen corresponding path program 1 times [2024-11-09 07:12:59,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:59,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830748112] [2024-11-09 07:12:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:59,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 07:15:14,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:14,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830748112] [2024-11-09 07:15:14,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830748112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:14,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495469] [2024-11-09 07:15:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:14,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:14,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:15:14,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:15:14,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bf46418-6dfd-493e-969c-4c69335f5fa0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process