./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cddb8be3317e9d6bf2e67633b62d21b872e62a4205c204f682a628045c0c7f11 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:42:46,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:42:46,890 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 02:42:46,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:42:46,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:42:46,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:42:46,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:42:46,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:42:46,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:42:46,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:42:46,949 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:42:46,950 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:42:46,951 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:42:46,951 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:42:46,951 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:42:46,951 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:42:46,951 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:42:46,952 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:42:46,952 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:42:46,952 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:42:46,952 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:42:46,952 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:42:46,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:42:46,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 02:42:46,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:42:46,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:42:46,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 02:42:46,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:42:46,954 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 02:42:46,954 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:42:46,954 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 02:42:46,954 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:42:46,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:42:46,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:42:46,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:42:46,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:46,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:42:46,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:42:46,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 02:42:46,956 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:42:46,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:42:46,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:42:46,957 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:42:46,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:42:46,957 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cddb8be3317e9d6bf2e67633b62d21b872e62a4205c204f682a628045c0c7f11 [2024-11-14 02:42:47,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:42:47,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:42:47,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:42:47,323 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:42:47,324 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:42:47,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i Unable to find full path for "g++" [2024-11-14 02:42:49,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:42:50,131 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:42:50,132 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i [2024-11-14 02:42:50,180 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/data/f774d485d/6b2d306048ec4ff59ba00f69be556406/FLAGc028f8164 [2024-11-14 02:42:50,206 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/data/f774d485d/6b2d306048ec4ff59ba00f69be556406 [2024-11-14 02:42:50,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:42:50,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:42:50,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:50,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:42:50,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:42:50,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:50" (1/1) ... [2024-11-14 02:42:50,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7552fde7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:50, skipping insertion in model container [2024-11-14 02:42:50,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:50" (1/1) ... [2024-11-14 02:42:50,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:42:50,712 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_50f486ef-46e5-4d02-8aec-ad7a7332add2/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i[4496,4509] [2024-11-14 02:42:50,721 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_50f486ef-46e5-4d02-8aec-ad7a7332add2/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i[4556,4569] [2024-11-14 02:42:51,968 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:51,970 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:51,970 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:51,972 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:51,973 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:52,006 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:52,007 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:52,009 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:52,010 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:52,822 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:52,823 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:52,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:53,015 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:42:53,029 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_50f486ef-46e5-4d02-8aec-ad7a7332add2/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i[4496,4509] [2024-11-14 02:42:53,030 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_50f486ef-46e5-4d02-8aec-ad7a7332add2/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i[4556,4569] [2024-11-14 02:42:53,175 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:53,176 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:53,179 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:53,180 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:53,181 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:53,193 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:53,193 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:53,195 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:53,196 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:53,314 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:53,315 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 02:42:53,326 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2024-11-14 02:42:53,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:53,601 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:42:53,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53 WrapperNode [2024-11-14 02:42:53,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:53,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:53,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:42:53,605 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:42:53,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53" (1/1) ... [2024-11-14 02:42:53,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53" (1/1) ... [2024-11-14 02:42:53,837 INFO L138 Inliner]: procedures = 678, calls = 1548, calls flagged for inlining = 54, calls inlined = 10, statements flattened = 726 [2024-11-14 02:42:53,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:53,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:42:53,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:42:53,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:42:53,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53" (1/1) ... [2024-11-14 02:42:53,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53" (1/1) ... [2024-11-14 02:42:53,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53" (1/1) ... [2024-11-14 02:42:53,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53" (1/1) ... [2024-11-14 02:42:53,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53" (1/1) ... [2024-11-14 02:42:53,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53" (1/1) ... [2024-11-14 02:42:53,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53" (1/1) ... [2024-11-14 02:42:53,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53" (1/1) ... [2024-11-14 02:42:53,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:42:53,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:42:53,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:42:53,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:42:53,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53" (1/1) ... [2024-11-14 02:42:53,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:53,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:54,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:42:54,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:42:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-14 02:42:54,038 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-14 02:42:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 02:42:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-14 02:42:54,040 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-14 02:42:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-14 02:42:54,040 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-14 02:42:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-14 02:42:54,040 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-14 02:42:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-14 02:42:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 02:42:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-14 02:42:54,042 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-14 02:42:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 02:42:54,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 02:42:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 02:42:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:42:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-11-14 02:42:54,042 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-11-14 02:42:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 02:42:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:42:54,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:42:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-14 02:42:54,045 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-14 02:42:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-14 02:42:54,045 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-14 02:42:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-14 02:42:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-14 02:42:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-14 02:42:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-14 02:42:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-14 02:42:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2024-11-14 02:42:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2024-11-14 02:42:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-14 02:42:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-14 02:42:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 02:42:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 02:42:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 02:42:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 02:42:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 02:42:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-14 02:42:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-14 02:42:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-14 02:42:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-14 02:42:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 02:42:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2024-11-14 02:42:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2024-11-14 02:42:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-14 02:42:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-14 02:42:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 02:42:54,495 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:42:54,498 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:42:59,173 INFO L? ?]: Removed 160 outVars from TransFormulas that were not future-live. [2024-11-14 02:42:59,173 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:42:59,618 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:42:59,619 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 02:42:59,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:59 BoogieIcfgContainer [2024-11-14 02:42:59,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:42:59,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:42:59,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:42:59,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:42:59,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:42:50" (1/3) ... [2024-11-14 02:42:59,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f74c85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:59, skipping insertion in model container [2024-11-14 02:42:59,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:53" (2/3) ... [2024-11-14 02:42:59,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f74c85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:59, skipping insertion in model container [2024-11-14 02:42:59,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:59" (3/3) ... [2024-11-14 02:42:59,633 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness_negated.i [2024-11-14 02:42:59,653 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:42:59,658 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_top_harness_negated.i that has 19 procedures, 172 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 02:42:59,733 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:42:59,748 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;@7a001467, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:42:59,750 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 02:42:59,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 96 states have (on average 1.1875) internal successors, (114), 96 states have internal predecessors, (114), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-14 02:42:59,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-14 02:42:59,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:59,772 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:59,773 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:59,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:59,779 INFO L85 PathProgramCache]: Analyzing trace with hash 423860572, now seen corresponding path program 1 times [2024-11-14 02:42:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:59,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820748461] [2024-11-14 02:42:59,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:59,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-14 02:43:09,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:09,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820748461] [2024-11-14 02:43:09,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820748461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:09,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:09,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:43:09,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499187450] [2024-11-14 02:43:09,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:09,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:43:09,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:10,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:43:10,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:43:10,011 INFO L87 Difference]: Start difference. First operand has 172 states, 96 states have (on average 1.1875) internal successors, (114), 96 states have internal predecessors, (114), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-14 02:43:12,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:14,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:16,720 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 [] [2024-11-14 02:43:18,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:18,297 INFO L93 Difference]: Finished difference Result 302 states and 415 transitions. [2024-11-14 02:43:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:43:18,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 117 [2024-11-14 02:43:18,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:18,314 INFO L225 Difference]: With dead ends: 302 [2024-11-14 02:43:18,314 INFO L226 Difference]: Without dead ends: 170 [2024-11-14 02:43:18,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:43:18,326 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 19 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:18,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 714 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2024-11-14 02:43:18,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-14 02:43:18,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-14 02:43:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 95 states have internal predecessors, (109), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-14 02:43:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 222 transitions. [2024-11-14 02:43:18,419 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 222 transitions. Word has length 117 [2024-11-14 02:43:18,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:18,421 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 222 transitions. [2024-11-14 02:43:18,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-14 02:43:18,422 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 222 transitions. [2024-11-14 02:43:18,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-14 02:43:18,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:18,425 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:18,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 02:43:18,426 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:43:18,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1288823576, now seen corresponding path program 1 times [2024-11-14 02:43:18,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:18,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406890689] [2024-11-14 02:43:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:18,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-14 02:43:27,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406890689] [2024-11-14 02:43:27,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406890689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:43:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197031434] [2024-11-14 02:43:27,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:27,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:43:27,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:43:27,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:43:27,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 02:43:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:34,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 4534 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 02:43:34,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-14 02:43:35,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:35,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197031434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:35,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:43:35,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-14 02:43:35,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045568349] [2024-11-14 02:43:35,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:35,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:43:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:43:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:43:35,922 INFO L87 Difference]: Start difference. First operand 170 states and 222 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-14 02:43:37,996 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 [] [2024-11-14 02:43:40,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:42,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:44,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:47,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:43:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:49,837 INFO L93 Difference]: Finished difference Result 309 states and 410 transitions. [2024-11-14 02:43:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:43:49,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 125 [2024-11-14 02:43:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:49,844 INFO L225 Difference]: With dead ends: 309 [2024-11-14 02:43:49,844 INFO L226 Difference]: Without dead ends: 172 [2024-11-14 02:43:49,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-14 02:43:49,847 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 25 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:49,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1056 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 5 Unknown, 0 Unchecked, 13.7s Time] [2024-11-14 02:43:49,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-14 02:43:49,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-11-14 02:43:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 97 states have internal predecessors, (110), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2024-11-14 02:43:49,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 229 transitions. [2024-11-14 02:43:49,879 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 229 transitions. Word has length 125 [2024-11-14 02:43:49,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:49,882 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 229 transitions. [2024-11-14 02:43:49,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-14 02:43:49,882 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 229 transitions. [2024-11-14 02:43:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-14 02:43:49,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:49,887 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:49,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 02:43:50,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:43:50,088 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:43:50,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:50,089 INFO L85 PathProgramCache]: Analyzing trace with hash 207322109, now seen corresponding path program 1 times [2024-11-14 02:43:50,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:50,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423281227] [2024-11-14 02:43:50,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:50,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-14 02:43:57,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:57,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423281227] [2024-11-14 02:43:57,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423281227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:57,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:57,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 02:43:57,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59252111] [2024-11-14 02:43:57,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:57,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:43:57,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:57,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:43:57,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:43:57,967 INFO L87 Difference]: Start difference. First operand 172 states and 229 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-14 02:44:00,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:02,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:04,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:06,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:08,544 INFO L93 Difference]: Finished difference Result 303 states and 403 transitions. [2024-11-14 02:44:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:44:08,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 134 [2024-11-14 02:44:08,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:08,548 INFO L225 Difference]: With dead ends: 303 [2024-11-14 02:44:08,548 INFO L226 Difference]: Without dead ends: 172 [2024-11-14 02:44:08,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:44:08,550 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 24 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:08,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 880 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 4 Unknown, 0 Unchecked, 10.5s Time] [2024-11-14 02:44:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-14 02:44:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-11-14 02:44:08,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 97 states have internal predecessors, (109), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2024-11-14 02:44:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 228 transitions. [2024-11-14 02:44:08,574 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 228 transitions. Word has length 134 [2024-11-14 02:44:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:08,575 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 228 transitions. [2024-11-14 02:44:08,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-14 02:44:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 228 transitions. [2024-11-14 02:44:08,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-14 02:44:08,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:08,582 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:08,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 02:44:08,583 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:44:08,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:08,583 INFO L85 PathProgramCache]: Analyzing trace with hash -166385235, now seen corresponding path program 1 times [2024-11-14 02:44:08,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:08,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183788156] [2024-11-14 02:44:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:08,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-14 02:44:17,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:17,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183788156] [2024-11-14 02:44:17,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183788156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:44:17,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27535329] [2024-11-14 02:44:17,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:17,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:44:17,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:44:17,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:44:17,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 02:44:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:24,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 4678 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 02:44:24,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-14 02:44:25,932 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:44:25,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27535329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:25,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:44:25,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-11-14 02:44:25,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498979086] [2024-11-14 02:44:25,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:25,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:44:25,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:44:25,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:44:25,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-14 02:44:25,934 INFO L87 Difference]: Start difference. First operand 172 states and 228 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-14 02:44:28,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:30,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:32,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:34,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:37,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:39,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:42,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:42,369 INFO L93 Difference]: Finished difference Result 308 states and 408 transitions. [2024-11-14 02:44:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:44:42,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 142 [2024-11-14 02:44:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:42,373 INFO L225 Difference]: With dead ends: 308 [2024-11-14 02:44:42,373 INFO L226 Difference]: Without dead ends: 172 [2024-11-14 02:44:42,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-14 02:44:42,375 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 31 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:42,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1187 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 279 Invalid, 6 Unknown, 0 Unchecked, 16.3s Time] [2024-11-14 02:44:42,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-14 02:44:42,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-11-14 02:44:42,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 97 states have internal predecessors, (109), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (61), 56 states have call predecessors, (61), 56 states have call successors, (61) [2024-11-14 02:44:42,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 227 transitions. [2024-11-14 02:44:42,398 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 227 transitions. Word has length 142 [2024-11-14 02:44:42,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:42,399 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 227 transitions. [2024-11-14 02:44:42,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-14 02:44:42,399 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 227 transitions. [2024-11-14 02:44:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-14 02:44:42,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:42,402 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:42,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 02:44:42,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:44:42,603 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:44:42,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2050727192, now seen corresponding path program 2 times [2024-11-14 02:44:42,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:42,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194881866] [2024-11-14 02:44:42,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:42,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-14 02:44:51,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194881866] [2024-11-14 02:44:51,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194881866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:44:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322283412] [2024-11-14 02:44:51,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:44:51,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:44:51,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:44:51,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:44:51,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 02:47:24,577 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-14 02:47:24,577 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:47:24,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 3861 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:47:24,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:47:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-14 02:47:25,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:47:25,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322283412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:47:25,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:47:25,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-14 02:47:25,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885107145] [2024-11-14 02:47:25,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:47:25,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:47:25,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:47:25,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:47:25,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:47:25,362 INFO L87 Difference]: Start difference. First operand 172 states and 227 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-14 02:47:27,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:29,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:32,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:34,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:36,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:38,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:47:38,116 INFO L93 Difference]: Finished difference Result 180 states and 235 transitions. [2024-11-14 02:47:38,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:47:38,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 151 [2024-11-14 02:47:38,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:47:38,120 INFO L225 Difference]: With dead ends: 180 [2024-11-14 02:47:38,120 INFO L226 Difference]: Without dead ends: 178 [2024-11-14 02:47:38,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-14 02:47:38,122 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 3 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:47:38,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 990 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 5 Unknown, 0 Unchecked, 12.6s Time] [2024-11-14 02:47:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-14 02:47:38,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2024-11-14 02:47:38,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 98 states have (on average 1.1428571428571428) internal successors, (112), 100 states have internal predecessors, (112), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (62), 57 states have call predecessors, (62), 57 states have call successors, (62) [2024-11-14 02:47:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2024-11-14 02:47:38,159 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 151 [2024-11-14 02:47:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:47:38,160 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2024-11-14 02:47:38,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-14 02:47:38,160 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2024-11-14 02:47:38,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-14 02:47:38,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:47:38,166 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:47:38,367 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process [2024-11-14 02:47:38,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 137 [2024-11-14 02:47:38,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:47:38,431 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:47:38,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:47:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2139731723, now seen corresponding path program 3 times [2024-11-14 02:47:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:47:38,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848438667] [2024-11-14 02:47:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:47:38,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:47:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:47:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-14 02:47:47,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:47:47,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848438667] [2024-11-14 02:47:47,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848438667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:47:47,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462075425] [2024-11-14 02:47:47,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 02:47:47,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:47:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:47:47,253 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:47:47,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 02:47:55,448 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 02:47:55,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:47:55,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 4886 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:47:55,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:47:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-14 02:47:57,109 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:47:57,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462075425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:47:57,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:47:57,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-14 02:47:57,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258508430] [2024-11-14 02:47:57,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:47:57,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:47:57,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:47:57,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:47:57,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-14 02:47:57,112 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2024-11-14 02:47:59,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:01,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:03,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:06,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:08,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:10,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:13,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:48:13,496 INFO L93 Difference]: Finished difference Result 298 states and 394 transitions. [2024-11-14 02:48:13,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:48:13,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 160 [2024-11-14 02:48:13,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:48:13,500 INFO L225 Difference]: With dead ends: 298 [2024-11-14 02:48:13,500 INFO L226 Difference]: Without dead ends: 188 [2024-11-14 02:48:13,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-14 02:48:13,503 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 27 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 14 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:48:13,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1219 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 261 Invalid, 6 Unknown, 0 Unchecked, 16.1s Time] [2024-11-14 02:48:13,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-14 02:48:13,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2024-11-14 02:48:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 104 states have internal predecessors, (116), 63 states have call successors, (63), 20 states have call predecessors, (63), 21 states have return successors, (67), 62 states have call predecessors, (67), 62 states have call successors, (67) [2024-11-14 02:48:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 246 transitions. [2024-11-14 02:48:13,535 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 246 transitions. Word has length 160 [2024-11-14 02:48:13,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:48:13,536 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 246 transitions. [2024-11-14 02:48:13,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2024-11-14 02:48:13,537 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 246 transitions. [2024-11-14 02:48:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-14 02:48:13,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:48:13,543 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:48:13,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 02:48:13,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50f486ef-46e5-4d02-8aec-ad7a7332add2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:48:13,743 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:48:13,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:48:13,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1797049358, now seen corresponding path program 1 times [2024-11-14 02:48:13,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:48:13,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212007270] [2024-11-14 02:48:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:48:13,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:48:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat