./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_mul_size_checked_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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/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 d3a7269104a5fa29492f85d3133520b9ee0197d3c9634a051510bddf9cb69b6d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:27:18,267 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:27:18,351 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 06:27:18,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:27:18,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:27:18,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:27:18,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:27:18,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:27:18,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:27:18,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:27:18,385 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:27:18,386 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:27:18,386 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:27:18,387 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:27:18,387 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:27:18,387 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:27:18,388 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:27:18,388 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:27:18,389 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:27:18,389 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:27:18,390 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:27:18,391 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:27:18,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:27:18,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:27:18,393 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:27:18,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:27:18,413 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:27:18,413 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:27:18,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:27:18,417 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:27:18,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:27:18,418 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:27:18,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:27:18,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:27:18,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:27:18,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:27:18,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:27:18,425 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:27:18,425 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:27:18,425 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:27:18,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:27:18,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:27:18,429 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:27:18,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:27:18,429 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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3a7269104a5fa29492f85d3133520b9ee0197d3c9634a051510bddf9cb69b6d [2024-11-09 06:27:18,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:27:18,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:27:18,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:27:18,799 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:27:18,801 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:27:18,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i Unable to find full path for "g++" [2024-11-09 06:27:20,814 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:27:21,373 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:27:21,376 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i [2024-11-09 06:27:21,426 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/data/8e8c616c0/15676052dec34b8aa324c1540e3e423b/FLAGa00a21ce8 [2024-11-09 06:27:21,888 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/data/8e8c616c0/15676052dec34b8aa324c1540e3e423b [2024-11-09 06:27:21,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:27:21,893 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:27:21,894 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:27:21,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:27:21,901 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:27:21,902 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:27:21" (1/1) ... [2024-11-09 06:27:21,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5609eeb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:21, skipping insertion in model container [2024-11-09 06:27:21,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:27:21" (1/1) ... [2024-11-09 06:27:22,026 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:27:22,363 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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[4494,4507] [2024-11-09 06:27:22,372 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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[4554,4567] [2024-11-09 06:27:23,219 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,220 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,221 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,222 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,224 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,242 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,243 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,246 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,247 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,250 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,252 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,253 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,254 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:23,961 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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[156332,156345] [2024-11-09 06:27:23,963 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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[156551,156564] [2024-11-09 06:27:23,963 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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[156747,156760] [2024-11-09 06:27:23,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:27:23,998 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:27:24,016 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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[4494,4507] [2024-11-09 06:27:24,017 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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[4554,4567] [2024-11-09 06:27:24,083 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,084 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,085 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,086 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,090 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,108 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,112 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,114 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,115 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,121 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,122 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,123 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,123 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:27:24,304 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [6947-6958] [2024-11-09 06:27:24,343 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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[156332,156345] [2024-11-09 06:27:24,365 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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[156551,156564] [2024-11-09 06:27:24,365 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_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[156747,156760] [2024-11-09 06:27:24,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:27:24,609 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:27:24,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24 WrapperNode [2024-11-09 06:27:24,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:27:24,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:27:24,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:27:24,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:27:24,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24" (1/1) ... [2024-11-09 06:27:24,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24" (1/1) ... [2024-11-09 06:27:24,797 INFO L138 Inliner]: procedures = 671, calls = 1227, calls flagged for inlining = 42, calls inlined = 6, statements flattened = 524 [2024-11-09 06:27:24,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:27:24,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:27:24,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:27:24,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:27:24,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24" (1/1) ... [2024-11-09 06:27:24,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24" (1/1) ... [2024-11-09 06:27:24,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24" (1/1) ... [2024-11-09 06:27:24,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24" (1/1) ... [2024-11-09 06:27:24,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24" (1/1) ... [2024-11-09 06:27:24,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24" (1/1) ... [2024-11-09 06:27:24,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24" (1/1) ... [2024-11-09 06:27:24,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24" (1/1) ... [2024-11-09 06:27:24,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:27:24,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:27:24,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:27:24,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:27:24,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24" (1/1) ... [2024-11-09 06:27:24,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:27:24,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:27:24,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:27:24,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:27:24,957 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_u64_checked [2024-11-09 06:27:24,958 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_u64_checked [2024-11-09 06:27:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:27:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-09 06:27:24,959 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-09 06:27:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 06:27:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:27:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-09 06:27:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-09 06:27:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:27:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:27:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:27:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:27:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:27:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 06:27:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint32_t [2024-11-09 06:27:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint32_t [2024-11-09 06:27:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:27:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 06:27:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-09 06:27:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-09 06:27:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-09 06:27:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-09 06:27:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:27:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:27:25,284 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:27:25,287 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:27:29,335 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-09 06:27:29,335 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:27:29,666 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:27:29,666 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:27:29,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:27:29 BoogieIcfgContainer [2024-11-09 06:27:29,667 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:27:29,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:27:29,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:27:29,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:27:29,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:27:21" (1/3) ... [2024-11-09 06:27:29,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccbd93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:27:29, skipping insertion in model container [2024-11-09 06:27:29,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:27:24" (2/3) ... [2024-11-09 06:27:29,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccbd93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:27:29, skipping insertion in model container [2024-11-09 06:27:29,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:27:29" (3/3) ... [2024-11-09 06:27:29,679 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_mul_size_checked_harness.i [2024-11-09 06:27:29,699 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:27:29,699 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:27:29,783 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:27:29,791 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;@5b72556d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:27:29,792 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:27:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 06:27:29,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:27:29,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:27:29,811 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:27:29,812 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:27:29,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:27:29,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1950571424, now seen corresponding path program 1 times [2024-11-09 06:27:29,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:27:29,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412650754] [2024-11-09 06:27:29,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:27:29,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:27:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:27:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:27:38,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:27:38,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412650754] [2024-11-09 06:27:38,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412650754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:27:38,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:27:38,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:27:38,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432837367] [2024-11-09 06:27:38,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:27:38,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:27:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:27:38,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:27:38,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:27:38,117 INFO L87 Difference]: Start difference. First operand has 55 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 06:27:40,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:27:42,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:27:44,801 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 06:27:45,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:27:45,374 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2024-11-09 06:27:45,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:27:45,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 27 [2024-11-09 06:27:45,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:27:45,387 INFO L225 Difference]: With dead ends: 72 [2024-11-09 06:27:45,388 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 06:27:45,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:27:45,396 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:27:45,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 3 Unknown, 0 Unchecked, 7.2s Time] [2024-11-09 06:27:45,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 06:27:45,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-09 06:27:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 31 states have internal predecessors, (33), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2024-11-09 06:27:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2024-11-09 06:27:45,455 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 27 [2024-11-09 06:27:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:27:45,457 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2024-11-09 06:27:45,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 06:27:45,457 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2024-11-09 06:27:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:27:45,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:27:45,467 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:27:45,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:27:45,468 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:27:45,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:27:45,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1954325090, now seen corresponding path program 1 times [2024-11-09 06:27:45,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:27:45,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998385185] [2024-11-09 06:27:45,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:27:45,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:27:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:27:52,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126615313] [2024-11-09 06:27:52,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:27:52,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:27:52,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:27:52,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:27:52,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:30:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:10,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 3798 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 06:30:10,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:13,064 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 13 treesize of output 9 [2024-11-09 06:30:14,657 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 17 treesize of output 9 [2024-11-09 06:30:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:30:15,526 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:30:15,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:30:15,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998385185] [2024-11-09 06:30:15,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 06:30:15,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126615313] [2024-11-09 06:30:15,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126615313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:15,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:15,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 06:30:15,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261737480] [2024-11-09 06:30:15,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:15,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:30:15,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:30:15,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:30:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:30:15,535 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 06:30:17,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:30:19,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:30:22,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:30:24,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:30:26,666 WARN L539 Checker$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 06:30:28,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:30:31,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:30:33,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:30:35,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:30:37,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:30:40,178 WARN L539 Checker$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 06:30:42,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 06:30:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:30:44,526 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2024-11-09 06:30:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 06:30:44,527 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 27 [2024-11-09 06:30:44,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:30:44,529 INFO L225 Difference]: With dead ends: 56 [2024-11-09 06:30:44,529 INFO L226 Difference]: Without dead ends: 47 [2024-11-09 06:30:44,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:30:44,531 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:30:44,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 395 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 12 Unknown, 0 Unchecked, 28.8s Time] [2024-11-09 06:30:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-09 06:30:44,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-09 06:30:44,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.16) internal successors, (29), 28 states have internal predecessors, (29), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-09 06:30:44,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-11-09 06:30:44,544 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 27 [2024-11-09 06:30:44,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:30:44,544 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-11-09 06:30:44,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 06:30:44,545 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-11-09 06:30:44,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:30:44,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:30:44,547 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:30:44,751 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process [2024-11-09 06:30:44,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 137 [2024-11-09 06:30:44,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:44,836 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:30:44,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:44,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1705982914, now seen corresponding path program 1 times [2024-11-09 06:30:44,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:30:44,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915722816] [2024-11-09 06:30:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:44,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:30:51,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722954669] [2024-11-09 06:30:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:51,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:51,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:30:51,254 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:30:51,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:35:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:35:36,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 3792 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 06:35:36,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:35:37,330 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 13 treesize of output 9 [2024-11-09 06:35:37,580 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 17 treesize of output 9 [2024-11-09 06:35:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:35:37,951 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:35:37,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:35:37,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915722816] [2024-11-09 06:35:37,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 06:35:37,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722954669] [2024-11-09 06:35:37,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722954669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:35:37,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:35:37,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 06:35:37,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015539179] [2024-11-09 06:35:37,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:35:37,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:35:37,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:35:37,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:35:37,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:35:37,956 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 06:35:40,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:35:42,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:35:44,478 WARN L539 Checker$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 06:35:46,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:35:48,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:35:51,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 06:35:53,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 06:35:54,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:35:54,347 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-09 06:35:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:35:54,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 27 [2024-11-09 06:35:54,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:35:54,349 INFO L225 Difference]: With dead ends: 55 [2024-11-09 06:35:54,349 INFO L226 Difference]: Without dead ends: 50 [2024-11-09 06:35:54,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:35:54,351 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 10 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:35:54,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 176 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 16.3s Time] [2024-11-09 06:35:54,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-09 06:35:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2024-11-09 06:35:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-09 06:35:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-11-09 06:35:54,366 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 27 [2024-11-09 06:35:54,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:35:54,368 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-11-09 06:35:54,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 06:35:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-11-09 06:35:54,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:35:54,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:35:54,370 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:35:54,571 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forcibly destroying the process [2024-11-09 06:35:54,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 137 [2024-11-09 06:35:54,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:35:54,637 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:35:54,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:35:54,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1709736580, now seen corresponding path program 1 times [2024-11-09 06:35:54,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:35:54,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497533143] [2024-11-09 06:35:54,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:35:54,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:36:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:36:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:36:01,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:36:01,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497533143] [2024-11-09 06:36:01,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497533143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:36:01,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:36:01,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:36:01,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143167291] [2024-11-09 06:36:01,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:36:01,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:36:01,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:36:01,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:36:01,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:36:01,479 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 06:36:03,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:36:05,880 WARN L539 Checker$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 06:36:08,112 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 06:36:08,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:36:08,622 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-11-09 06:36:08,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:36:08,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 27 [2024-11-09 06:36:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:36:08,624 INFO L225 Difference]: With dead ends: 54 [2024-11-09 06:36:08,624 INFO L226 Difference]: Without dead ends: 47 [2024-11-09 06:36:08,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:36:08,626 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:36:08,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 7.1s Time] [2024-11-09 06:36:08,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-09 06:36:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-09 06:36:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.12) internal successors, (28), 28 states have internal predecessors, (28), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-09 06:36:08,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2024-11-09 06:36:08,639 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 27 [2024-11-09 06:36:08,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:36:08,639 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2024-11-09 06:36:08,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 06:36:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2024-11-09 06:36:08,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:36:08,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:36:08,641 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:36:08,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:36:08,642 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:36:08,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:36:08,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1836921321, now seen corresponding path program 1 times [2024-11-09 06:36:08,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:36:08,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712502510] [2024-11-09 06:36:08,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:36:08,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:36:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:36:15,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336155200] [2024-11-09 06:36:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:36:15,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:36:15,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:36:15,010 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:36:15,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dd552b-8d2f-4aa3-89b0-54e3b476ae4e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process