./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 30091377e4ec06a93ce8980a411bd57ff29d691a2fbe3a2d6828a70c9a775d29 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:13:47,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:13:47,977 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 00:13:47,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:13:47,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:13:48,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:13:48,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:13:48,030 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:13:48,031 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:13:48,031 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:13:48,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:13:48,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:13:48,033 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:13:48,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:13:48,033 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:13:48,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:13:48,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:13:48,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:13:48,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:13:48,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:13:48,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:13:48,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:13:48,034 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:13:48,034 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:13:48,035 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:13:48,035 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:13:48,035 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:13:48,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:13:48,036 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:13:48,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:13:48,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:13:48,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:13:48,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:13:48,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:13:48,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:13:48,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:13:48,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:13:48,038 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:13:48,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:13:48,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:13:48,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:13:48,039 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:13:48,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:13:48,039 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:13:48,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:13:48,040 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC 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 -> Automizer 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 -> 30091377e4ec06a93ce8980a411bd57ff29d691a2fbe3a2d6828a70c9a775d29 [2024-11-24 00:13:48,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:13:48,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:13:48,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:13:48,459 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:13:48,460 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:13:48,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i [2024-11-24 00:13:51,742 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/data/672d87bed/4a086775a18b46099ecf2ff8b70948dd/FLAGd52c23678 [2024-11-24 00:13:52,508 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:13:52,512 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i [2024-11-24 00:13:52,580 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/data/672d87bed/4a086775a18b46099ecf2ff8b70948dd/FLAGd52c23678 [2024-11-24 00:13:52,608 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/data/672d87bed/4a086775a18b46099ecf2ff8b70948dd [2024-11-24 00:13:52,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:13:52,613 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:13:52,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:13:52,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:13:52,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:13:52,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:13:52" (1/1) ... [2024-11-24 00:13:52,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be9c0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:52, skipping insertion in model container [2024-11-24 00:13:52,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:13:52" (1/1) ... [2024-11-24 00:13:52,754 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:13:53,044 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_fc5daa89-c72f-4531-bddc-e5fa64826d9c/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[4491,4504] [2024-11-24 00:13:53,051 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_fc5daa89-c72f-4531-bddc-e5fa64826d9c/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[4551,4564] [2024-11-24 00:13:54,248 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:54,249 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:54,249 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:54,250 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:54,252 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:54,268 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:54,269 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:54,271 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:54,272 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:54,275 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:54,276 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:54,277 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:54,277 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,520 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,521 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,557 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,558 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,566 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,568 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,589 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,590 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,591 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,591 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,592 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,592 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,592 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,645 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_fc5daa89-c72f-4531-bddc-e5fa64826d9c/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[228442,228455] [2024-11-24 00:13:55,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:13:55,694 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:13:55,714 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_fc5daa89-c72f-4531-bddc-e5fa64826d9c/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[4491,4504] [2024-11-24 00:13:55,714 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_fc5daa89-c72f-4531-bddc-e5fa64826d9c/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[4551,4564] [2024-11-24 00:13:55,778 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,779 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,779 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,779 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,780 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,794 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,795 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,796 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,796 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,799 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,800 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,800 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,801 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:55,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2024-11-24 00:13:56,077 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,078 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,086 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,087 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,090 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,091 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,103 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,104 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,105 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,106 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,107 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,107 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,108 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:13:56,142 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_fc5daa89-c72f-4531-bddc-e5fa64826d9c/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[228442,228455] [2024-11-24 00:13:56,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:13:56,477 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:13:56,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56 WrapperNode [2024-11-24 00:13:56,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:13:56,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:13:56,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:13:56,479 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:13:56,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:56,608 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:56,708 INFO L138 Inliner]: procedures = 763, calls = 2450, calls flagged for inlining = 69, calls inlined = 18, statements flattened = 970 [2024-11-24 00:13:56,708 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:13:56,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:13:56,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:13:56,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:13:56,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:56,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:56,733 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:56,858 INFO L175 MemorySlicer]: Split 320 memory accesses to 11 slices as follows [2, 238, 2, 6, 4, 3, 3, 39, 5, 13, 5]. 74 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [0, 6, 2, 0, 0, 0, 0, 0, 1, 0, 5]. The 250 writes are split as follows [1, 232, 0, 2, 3, 3, 1, 5, 2, 1, 0]. [2024-11-24 00:13:56,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:56,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:56,946 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:56,949 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:56,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:57,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:57,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:57,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:13:57,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:13:57,053 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:13:57,053 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:13:57,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (1/1) ... [2024-11-24 00:13:57,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:13:57,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:13:57,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:13:57,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:13:57,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-24 00:13:57,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-24 00:13:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-24 00:13:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-24 00:13:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-24 00:13:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-24 00:13:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-11-24 00:13:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-11-24 00:13:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-11-24 00:13:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-11-24 00:13:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-11-24 00:13:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2024-11-24 00:13:57,154 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2024-11-24 00:13:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2024-11-24 00:13:57,154 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2024-11-24 00:13:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2024-11-24 00:13:57,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2024-11-24 00:13:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:13:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2024-11-24 00:13:57,154 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2024-11-24 00:13:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 00:13:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 00:13:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 00:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 00:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-24 00:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-24 00:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-24 00:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-24 00:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-24 00:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-24 00:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-11-24 00:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 00:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 00:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-24 00:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-24 00:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-24 00:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-24 00:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-24 00:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-24 00:13:57,156 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-24 00:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:13:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-24 00:13:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-24 00:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 00:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-24 00:13:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-24 00:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 00:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 00:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 00:13:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-24 00:13:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-24 00:13:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-24 00:13:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-24 00:13:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-24 00:13:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-24 00:13:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-24 00:13:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-24 00:13:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2024-11-24 00:13:57,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2024-11-24 00:13:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2024-11-24 00:13:57,158 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2024-11-24 00:13:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:13:57,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:13:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-24 00:13:57,159 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-24 00:13:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-24 00:13:57,159 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-24 00:13:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-24 00:13:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-24 00:13:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-24 00:13:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-24 00:13:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-24 00:13:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-24 00:13:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-24 00:13:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-24 00:13:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-24 00:13:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-24 00:13:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-11-24 00:13:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2024-11-24 00:13:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2024-11-24 00:13:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:13:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:13:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:13:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-24 00:13:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-24 00:13:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 00:13:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 00:13:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 00:13:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-24 00:13:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-24 00:13:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-24 00:13:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-24 00:13:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-24 00:13:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-24 00:13:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-24 00:13:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-24 00:13:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-24 00:13:57,161 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-24 00:13:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 00:13:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 00:13:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 00:13:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-24 00:13:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-24 00:13:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-24 00:13:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-24 00:13:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-24 00:13:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-24 00:13:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-24 00:13:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-24 00:13:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2024-11-24 00:13:57,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2024-11-24 00:13:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-24 00:13:57,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-24 00:13:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-24 00:13:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-24 00:13:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-24 00:13:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-24 00:13:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2024-11-24 00:13:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2024-11-24 00:13:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:13:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:13:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:13:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:13:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 00:13:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 00:13:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-24 00:13:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-24 00:13:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-24 00:13:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-24 00:13:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-24 00:13:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2024-11-24 00:13:57,164 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2024-11-24 00:13:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-24 00:13:57,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-24 00:13:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:13:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:13:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:13:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:13:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:13:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 00:13:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 00:13:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 00:13:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 00:13:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 00:13:57,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 00:13:57,166 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-24 00:13:57,166 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-24 00:13:57,808 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:13:57,812 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:13:57,873 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 00:13:57,908 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume false; [2024-11-24 00:13:57,908 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !false; [2024-11-24 00:13:58,267 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 00:13:58,307 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2024-11-24 00:13:58,307 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2024-11-24 00:13:58,606 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 00:13:58,611 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 00:13:58,612 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 00:13:58,613 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 00:13:58,617 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 00:14:04,920 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume false; [2024-11-24 00:14:04,920 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2024-11-24 00:14:04,920 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !false; [2024-11-24 00:14:04,921 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume false; [2024-11-24 00:14:04,921 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2024-11-24 00:14:04,921 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##61: assume false; [2024-11-24 00:14:04,921 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##62: assume !false; [2024-11-24 00:14:04,921 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##52: assume !false; [2024-11-24 00:14:04,921 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##51: assume false; [2024-11-24 00:14:04,921 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume !false; [2024-11-24 00:14:05,065 INFO L? ?]: Removed 285 outVars from TransFormulas that were not future-live. [2024-11-24 00:14:05,065 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:14:05,084 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:14:05,084 INFO L312 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-24 00:14:05,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:14:05 BoogieIcfgContainer [2024-11-24 00:14:05,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:14:05,087 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:14:05,087 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:14:05,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:14:05,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:13:52" (1/3) ... [2024-11-24 00:14:05,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d902e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:14:05, skipping insertion in model container [2024-11-24 00:14:05,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:13:56" (2/3) ... [2024-11-24 00:14:05,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d902e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:14:05, skipping insertion in model container [2024-11-24 00:14:05,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:14:05" (3/3) ... [2024-11-24 00:14:05,094 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness_negated.i [2024-11-24 00:14:05,111 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:14:05,113 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_eq_harness_negated.i that has 25 procedures, 312 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2024-11-24 00:14:05,180 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:14:05,193 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=PETRI_NET, 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;@5e9df24f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:14:05,193 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:14:05,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 312 states, 204 states have (on average 1.2401960784313726) internal successors, (253), 198 states have internal predecessors, (253), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:14:05,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-24 00:14:05,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:05,223 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 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, 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, 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] [2024-11-24 00:14:05,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:05,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:05,232 INFO L85 PathProgramCache]: Analyzing trace with hash 810534844, now seen corresponding path program 1 times [2024-11-24 00:14:05,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:05,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567715341] [2024-11-24 00:14:05,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:05,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2024-11-24 00:14:13,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:13,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567715341] [2024-11-24 00:14:13,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567715341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:14:13,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000788028] [2024-11-24 00:14:13,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:13,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:13,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:13,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:13,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:14:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:21,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 5303 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:14:21,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-11-24 00:14:21,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:14:21,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000788028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:21,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:14:21,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:14:21,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895879415] [2024-11-24 00:14:21,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:21,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:14:21,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:21,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:14:21,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:14:21,408 INFO L87 Difference]: Start difference. First operand has 312 states, 204 states have (on average 1.2401960784313726) internal successors, (253), 198 states have internal predecessors, (253), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-24 00:14:21,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:21,533 INFO L93 Difference]: Finished difference Result 620 states and 930 transitions. [2024-11-24 00:14:21,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:14:21,536 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 293 [2024-11-24 00:14:21,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:21,549 INFO L225 Difference]: With dead ends: 620 [2024-11-24 00:14:21,550 INFO L226 Difference]: Without dead ends: 306 [2024-11-24 00:14:21,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:14:21,561 INFO L435 NwaCegarLoop]: 417 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:21,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:14:21,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-24 00:14:21,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2024-11-24 00:14:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 192 states have (on average 1.2239583333333333) internal successors, (235), 193 states have internal predecessors, (235), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-24 00:14:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 412 transitions. [2024-11-24 00:14:21,645 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 412 transitions. Word has length 293 [2024-11-24 00:14:21,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:21,647 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 412 transitions. [2024-11-24 00:14:21,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-24 00:14:21,648 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 412 transitions. [2024-11-24 00:14:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-24 00:14:21,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:21,658 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 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, 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, 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] [2024-11-24 00:14:21,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:14:21,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:14:21,859 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:21,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:21,860 INFO L85 PathProgramCache]: Analyzing trace with hash -5436950, now seen corresponding path program 1 times [2024-11-24 00:14:21,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:21,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011864821] [2024-11-24 00:14:21,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:21,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:29,467 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-11-24 00:14:29,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:29,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011864821] [2024-11-24 00:14:29,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011864821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:14:29,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875772040] [2024-11-24 00:14:29,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:29,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:29,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:29,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:29,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:14:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:36,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 5303 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:14:36,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2024-11-24 00:14:37,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:14:37,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875772040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:37,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:14:37,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-11-24 00:14:37,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831660629] [2024-11-24 00:14:37,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:37,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:14:37,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:37,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:14:37,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:14:37,806 INFO L87 Difference]: Start difference. First operand 306 states and 412 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-24 00:14:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:40,176 INFO L93 Difference]: Finished difference Result 316 states and 422 transitions. [2024-11-24 00:14:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:14:40,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 293 [2024-11-24 00:14:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:40,182 INFO L225 Difference]: With dead ends: 316 [2024-11-24 00:14:40,183 INFO L226 Difference]: Without dead ends: 314 [2024-11-24 00:14:40,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:14:40,185 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 50 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:40,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 2567 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 00:14:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-24 00:14:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 311. [2024-11-24 00:14:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 195 states have (on average 1.2205128205128206) internal successors, (238), 197 states have internal predecessors, (238), 90 states have call successors, (90), 25 states have call predecessors, (90), 25 states have return successors, (89), 88 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:14:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 417 transitions. [2024-11-24 00:14:40,225 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 417 transitions. Word has length 293 [2024-11-24 00:14:40,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:40,226 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 417 transitions. [2024-11-24 00:14:40,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-24 00:14:40,227 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 417 transitions. [2024-11-24 00:14:40,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-24 00:14:40,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:40,233 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 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, 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, 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] [2024-11-24 00:14:40,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:14:40,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:40,434 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:40,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:40,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1104625542, now seen corresponding path program 1 times [2024-11-24 00:14:40,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:40,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364779698] [2024-11-24 00:14:40,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:40,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-11-24 00:14:48,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:48,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364779698] [2024-11-24 00:14:48,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364779698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:14:48,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464693388] [2024-11-24 00:14:48,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:48,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:48,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:48,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:48,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:14:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:55,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 5314 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:14:55,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2024-11-24 00:14:55,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:14:55,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464693388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:55,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:14:55,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-11-24 00:14:55,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963383936] [2024-11-24 00:14:55,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:55,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:14:55,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:55,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:14:55,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:14:55,906 INFO L87 Difference]: Start difference. First operand 311 states and 417 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-24 00:14:58,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:58,395 INFO L93 Difference]: Finished difference Result 321 states and 427 transitions. [2024-11-24 00:14:58,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:14:58,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 297 [2024-11-24 00:14:58,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:58,411 INFO L225 Difference]: With dead ends: 321 [2024-11-24 00:14:58,411 INFO L226 Difference]: Without dead ends: 319 [2024-11-24 00:14:58,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:14:58,412 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 50 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:58,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 2567 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 00:14:58,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-24 00:14:58,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 316. [2024-11-24 00:14:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 198 states have (on average 1.2171717171717171) internal successors, (241), 201 states have internal predecessors, (241), 91 states have call successors, (91), 26 states have call predecessors, (91), 26 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:14:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 422 transitions. [2024-11-24 00:14:58,462 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 422 transitions. Word has length 297 [2024-11-24 00:14:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:58,464 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 422 transitions. [2024-11-24 00:14:58,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-24 00:14:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 422 transitions. [2024-11-24 00:14:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-24 00:14:58,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:58,473 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 8, 4, 4, 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, 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, 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] [2024-11-24 00:14:58,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:14:58,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:58,674 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:58,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:58,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1011245719, now seen corresponding path program 1 times [2024-11-24 00:14:58,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:58,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265013057] [2024-11-24 00:14:58,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:58,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:15:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:15:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2024-11-24 00:15:05,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:15:05,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265013057] [2024-11-24 00:15:05,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265013057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:15:05,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809776141] [2024-11-24 00:15:05,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:15:05,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:15:05,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:15:05,946 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:15:05,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:15:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:15:13,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 5328 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-24 00:15:13,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:15:14,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:15:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-24 00:15:15,708 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:15:15,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809776141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:15:15,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:15:15,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2024-11-24 00:15:15,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071377662] [2024-11-24 00:15:15,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:15:15,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:15:15,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:15:15,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:15:15,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:15:15,711 INFO L87 Difference]: Start difference. First operand 316 states and 422 transitions. Second operand has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (43), 5 states have call predecessors, (43), 4 states have call successors, (43) [2024-11-24 00:15:25,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:15:25,757 INFO L93 Difference]: Finished difference Result 705 states and 960 transitions. [2024-11-24 00:15:25,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:15:25,757 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (43), 5 states have call predecessors, (43), 4 states have call successors, (43) Word has length 302 [2024-11-24 00:15:25,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:15:25,762 INFO L225 Difference]: With dead ends: 705 [2024-11-24 00:15:25,762 INFO L226 Difference]: Without dead ends: 393 [2024-11-24 00:15:25,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:15:25,764 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 401 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:15:25,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 2660 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-24 00:15:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-24 00:15:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2024-11-24 00:15:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 246 states have (on average 1.2032520325203253) internal successors, (296), 250 states have internal predecessors, (296), 105 states have call successors, (105), 37 states have call predecessors, (105), 37 states have return successors, (121), 101 states have call predecessors, (121), 104 states have call successors, (121) [2024-11-24 00:15:25,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 522 transitions. [2024-11-24 00:15:25,830 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 522 transitions. Word has length 302 [2024-11-24 00:15:25,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:15:25,830 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 522 transitions. [2024-11-24 00:15:25,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (43), 5 states have call predecessors, (43), 4 states have call successors, (43) [2024-11-24 00:15:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 522 transitions. [2024-11-24 00:15:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-24 00:15:25,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:15:25,836 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 7, 4, 4, 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, 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, 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] [2024-11-24 00:15:25,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:15:26,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:15:26,037 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:15:26,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:15:26,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1748324907, now seen corresponding path program 1 times [2024-11-24 00:15:26,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:15:26,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039953151] [2024-11-24 00:15:26,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:15:26,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:15:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:15:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2024-11-24 00:15:32,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:15:32,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039953151] [2024-11-24 00:15:32,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039953151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:15:32,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14796783] [2024-11-24 00:15:32,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:15:32,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:15:32,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:15:32,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:15:32,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:15:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:15:39,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 5323 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:15:39,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:15:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-24 00:15:39,868 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:15:39,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14796783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:15:39,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:15:39,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-24 00:15:39,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131684745] [2024-11-24 00:15:39,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:15:39,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:15:39,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:15:39,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:15:39,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:15:39,871 INFO L87 Difference]: Start difference. First operand 389 states and 522 transitions. Second operand has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-24 00:15:42,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:15:42,073 INFO L93 Difference]: Finished difference Result 711 states and 983 transitions. [2024-11-24 00:15:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:15:42,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 302 [2024-11-24 00:15:42,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:15:42,078 INFO L225 Difference]: With dead ends: 711 [2024-11-24 00:15:42,078 INFO L226 Difference]: Without dead ends: 394 [2024-11-24 00:15:42,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:15:42,082 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 425 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:15:42,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1010 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 00:15:42,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-24 00:15:42,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2024-11-24 00:15:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 249 states have (on average 1.2008032128514057) internal successors, (299), 254 states have internal predecessors, (299), 106 states have call successors, (106), 37 states have call predecessors, (106), 38 states have return successors, (137), 102 states have call predecessors, (137), 105 states have call successors, (137) [2024-11-24 00:15:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 542 transitions. [2024-11-24 00:15:42,129 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 542 transitions. Word has length 302 [2024-11-24 00:15:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:15:42,130 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 542 transitions. [2024-11-24 00:15:42,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2024-11-24 00:15:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 542 transitions. [2024-11-24 00:15:42,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-24 00:15:42,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:15:42,138 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 7, 4, 4, 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, 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, 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] [2024-11-24 00:15:42,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:15:42,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:15:42,339 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:15:42,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:15:42,339 INFO L85 PathProgramCache]: Analyzing trace with hash -575760658, now seen corresponding path program 1 times [2024-11-24 00:15:42,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:15:42,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288576061] [2024-11-24 00:15:42,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:15:42,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:15:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:15:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2024-11-24 00:15:48,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:15:48,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288576061] [2024-11-24 00:15:48,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288576061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:15:48,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507915288] [2024-11-24 00:15:48,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:15:48,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:15:48,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:15:49,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:15:49,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:15:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:15:56,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 5352 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-24 00:15:56,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:15:57,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:15:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-24 00:15:59,914 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:15:59,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507915288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:15:59,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:15:59,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5] total 16 [2024-11-24 00:15:59,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058219951] [2024-11-24 00:15:59,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:15:59,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:15:59,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:15:59,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:15:59,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:15:59,917 INFO L87 Difference]: Start difference. First operand 394 states and 542 transitions. Second operand has 13 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 5 states have call successors, (45), 3 states have call predecessors, (45), 6 states have return successors, (44), 6 states have call predecessors, (44), 5 states have call successors, (44) [2024-11-24 00:16:14,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:16:14,599 INFO L93 Difference]: Finished difference Result 730 states and 1063 transitions. [2024-11-24 00:16:14,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:16:14,600 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 5 states have call successors, (45), 3 states have call predecessors, (45), 6 states have return successors, (44), 6 states have call predecessors, (44), 5 states have call successors, (44) Word has length 308 [2024-11-24 00:16:14,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:16:14,605 INFO L225 Difference]: With dead ends: 730 [2024-11-24 00:16:14,605 INFO L226 Difference]: Without dead ends: 408 [2024-11-24 00:16:14,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 297 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:16:14,607 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 383 mSDsluCounter, 3465 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 3909 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:16:14,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 3909 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2024-11-24 00:16:14,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-24 00:16:14,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 397. [2024-11-24 00:16:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 251 states have (on average 1.199203187250996) internal successors, (301), 256 states have internal predecessors, (301), 106 states have call successors, (106), 37 states have call predecessors, (106), 39 states have return successors, (142), 103 states have call predecessors, (142), 105 states have call successors, (142) [2024-11-24 00:16:14,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 549 transitions. [2024-11-24 00:16:14,655 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 549 transitions. Word has length 308 [2024-11-24 00:16:14,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:16:14,656 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 549 transitions. [2024-11-24 00:16:14,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 5 states have call successors, (45), 3 states have call predecessors, (45), 6 states have return successors, (44), 6 states have call predecessors, (44), 5 states have call successors, (44) [2024-11-24 00:16:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 549 transitions. [2024-11-24 00:16:14,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-24 00:16:14,660 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:16:14,660 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 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] [2024-11-24 00:16:14,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:16:14,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-24 00:16:14,861 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:16:14,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:16:14,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1556646869, now seen corresponding path program 1 times [2024-11-24 00:16:14,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:16:14,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177585555] [2024-11-24 00:16:14,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:14,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:16:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2024-11-24 00:16:21,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:16:21,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177585555] [2024-11-24 00:16:21,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177585555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:16:21,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565148732] [2024-11-24 00:16:21,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:21,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:16:21,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:16:21,330 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:16:21,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:16:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:29,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 5384 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-24 00:16:29,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:16:30,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:16:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-11-24 00:16:31,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:16:31,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565148732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:16:31,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:16:31,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2024-11-24 00:16:31,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077164538] [2024-11-24 00:16:31,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:16:31,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:16:31,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:16:31,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:16:31,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:16:31,695 INFO L87 Difference]: Start difference. First operand 397 states and 549 transitions. Second operand has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (47), 3 states have call predecessors, (47), 5 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) [2024-11-24 00:16:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:16:41,897 INFO L93 Difference]: Finished difference Result 700 states and 1011 transitions. [2024-11-24 00:16:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:16:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (47), 3 states have call predecessors, (47), 5 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) Word has length 315 [2024-11-24 00:16:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:16:41,902 INFO L225 Difference]: With dead ends: 700 [2024-11-24 00:16:41,903 INFO L226 Difference]: Without dead ends: 404 [2024-11-24 00:16:41,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:16:41,906 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 329 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:16:41,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 2876 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2024-11-24 00:16:41,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-24 00:16:41,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 400. [2024-11-24 00:16:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 253 states have (on average 1.1976284584980237) internal successors, (303), 259 states have internal predecessors, (303), 106 states have call successors, (106), 37 states have call predecessors, (106), 40 states have return successors, (156), 103 states have call predecessors, (156), 105 states have call successors, (156) [2024-11-24 00:16:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 565 transitions. [2024-11-24 00:16:41,959 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 565 transitions. Word has length 315 [2024-11-24 00:16:41,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:16:41,959 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 565 transitions. [2024-11-24 00:16:41,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (47), 3 states have call predecessors, (47), 5 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) [2024-11-24 00:16:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 565 transitions. [2024-11-24 00:16:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-24 00:16:41,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:16:41,963 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 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] [2024-11-24 00:16:41,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:16:42,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-24 00:16:42,164 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:16:42,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:16:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1147945579, now seen corresponding path program 1 times [2024-11-24 00:16:42,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:16:42,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566475661] [2024-11-24 00:16:42,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:42,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:16:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2024-11-24 00:16:48,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:16:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566475661] [2024-11-24 00:16:48,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566475661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:16:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57080939] [2024-11-24 00:16:48,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:48,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:16:48,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:16:48,085 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:16:48,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:16:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:55,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 5374 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:16:55,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:16:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 418 proven. 166 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-24 00:16:57,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:17:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2024-11-24 00:17:01,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57080939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:17:01,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:17:01,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-11-24 00:17:01,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311926294] [2024-11-24 00:17:01,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:17:01,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:17:01,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:01,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:17:01,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:17:01,298 INFO L87 Difference]: Start difference. First operand 400 states and 565 transitions. Second operand has 11 states, 9 states have (on average 18.11111111111111) internal successors, (163), 11 states have internal predecessors, (163), 6 states have call successors, (83), 3 states have call predecessors, (83), 5 states have return successors, (84), 7 states have call predecessors, (84), 6 states have call successors, (84) [2024-11-24 00:17:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:05,823 INFO L93 Difference]: Finished difference Result 754 states and 1082 transitions. [2024-11-24 00:17:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:17:05,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 18.11111111111111) internal successors, (163), 11 states have internal predecessors, (163), 6 states have call successors, (83), 3 states have call predecessors, (83), 5 states have return successors, (84), 7 states have call predecessors, (84), 6 states have call successors, (84) Word has length 315 [2024-11-24 00:17:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:05,828 INFO L225 Difference]: With dead ends: 754 [2024-11-24 00:17:05,828 INFO L226 Difference]: Without dead ends: 410 [2024-11-24 00:17:05,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 623 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:17:05,832 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 395 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:05,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 2436 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-24 00:17:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-24 00:17:05,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2024-11-24 00:17:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 261 states have (on average 1.1915708812260537) internal successors, (311), 267 states have internal predecessors, (311), 106 states have call successors, (106), 37 states have call predecessors, (106), 42 states have return successors, (155), 105 states have call predecessors, (155), 105 states have call successors, (155) [2024-11-24 00:17:05,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 572 transitions. [2024-11-24 00:17:05,882 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 572 transitions. Word has length 315 [2024-11-24 00:17:05,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:05,883 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 572 transitions. [2024-11-24 00:17:05,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 18.11111111111111) internal successors, (163), 11 states have internal predecessors, (163), 6 states have call successors, (83), 3 states have call predecessors, (83), 5 states have return successors, (84), 7 states have call predecessors, (84), 6 states have call successors, (84) [2024-11-24 00:17:05,883 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 572 transitions. [2024-11-24 00:17:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-24 00:17:05,887 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:05,887 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2024-11-24 00:17:05,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:17:06,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:06,088 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:06,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:06,088 INFO L85 PathProgramCache]: Analyzing trace with hash 331283013, now seen corresponding path program 1 times [2024-11-24 00:17:06,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:06,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138420118] [2024-11-24 00:17:06,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:06,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 46 proven. 12 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2024-11-24 00:17:16,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138420118] [2024-11-24 00:17:16,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138420118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:16,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332845676] [2024-11-24 00:17:16,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:16,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:16,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:16,628 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:16,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:17:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:24,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 5512 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-24 00:17:24,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:24,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:17:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-24 00:17:30,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:17:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332845676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:30,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:17:30,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 17 [2024-11-24 00:17:30,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206338201] [2024-11-24 00:17:30,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:30,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:17:30,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:30,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:17:30,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:17:30,227 INFO L87 Difference]: Start difference. First operand 410 states and 572 transitions. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 12 states have internal predecessors, (131), 6 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 7 states have call predecessors, (50), 6 states have call successors, (50) [2024-11-24 00:17:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:40,643 INFO L93 Difference]: Finished difference Result 653 states and 941 transitions. [2024-11-24 00:17:40,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 00:17:40,644 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 12 states have internal predecessors, (131), 6 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 7 states have call predecessors, (50), 6 states have call successors, (50) Word has length 365 [2024-11-24 00:17:40,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:40,647 INFO L225 Difference]: With dead ends: 653 [2024-11-24 00:17:40,647 INFO L226 Difference]: Without dead ends: 414 [2024-11-24 00:17:40,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 344 SyntacticMatches, 18 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:17:40,650 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 327 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:40,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 2635 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-11-24 00:17:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-24 00:17:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 410. [2024-11-24 00:17:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 261 states have (on average 1.1915708812260537) internal successors, (311), 267 states have internal predecessors, (311), 106 states have call successors, (106), 37 states have call predecessors, (106), 42 states have return successors, (150), 105 states have call predecessors, (150), 105 states have call successors, (150) [2024-11-24 00:17:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 567 transitions. [2024-11-24 00:17:40,704 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 567 transitions. Word has length 365 [2024-11-24 00:17:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:40,705 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 567 transitions. [2024-11-24 00:17:40,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 12 states have internal predecessors, (131), 6 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 7 states have call predecessors, (50), 6 states have call successors, (50) [2024-11-24 00:17:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 567 transitions. [2024-11-24 00:17:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-24 00:17:40,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:40,712 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:40,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 00:17:40,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-24 00:17:40,912 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:40,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:40,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1660307725, now seen corresponding path program 1 times [2024-11-24 00:17:40,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:40,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607382104] [2024-11-24 00:17:40,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:40,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-24 00:17:47,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:47,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607382104] [2024-11-24 00:17:47,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607382104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:47,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544464180] [2024-11-24 00:17:47,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:47,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:47,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:47,156 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:47,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:17:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:55,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 5438 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:17:55,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 228 proven. 389 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-24 00:17:57,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-24 00:18:01,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544464180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:01,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:01,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-24 00:18:01,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104499964] [2024-11-24 00:18:01,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:01,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:18:01,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:01,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:18:01,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:18:01,778 INFO L87 Difference]: Start difference. First operand 410 states and 567 transitions. Second operand has 14 states, 14 states have (on average 11.5) internal successors, (161), 14 states have internal predecessors, (161), 10 states have call successors, (88), 3 states have call predecessors, (88), 5 states have return successors, (87), 10 states have call predecessors, (87), 10 states have call successors, (87) [2024-11-24 00:18:05,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:05,802 INFO L93 Difference]: Finished difference Result 649 states and 917 transitions. [2024-11-24 00:18:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:18:05,803 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.5) internal successors, (161), 14 states have internal predecessors, (161), 10 states have call successors, (88), 3 states have call predecessors, (88), 5 states have return successors, (87), 10 states have call predecessors, (87), 10 states have call successors, (87) Word has length 351 [2024-11-24 00:18:05,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:05,808 INFO L225 Difference]: With dead ends: 649 [2024-11-24 00:18:05,808 INFO L226 Difference]: Without dead ends: 410 [2024-11-24 00:18:05,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 693 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:18:05,810 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 471 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:05,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 2680 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-24 00:18:05,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-24 00:18:05,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2024-11-24 00:18:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 261 states have (on average 1.1915708812260537) internal successors, (311), 267 states have internal predecessors, (311), 106 states have call successors, (106), 37 states have call predecessors, (106), 42 states have return successors, (145), 105 states have call predecessors, (145), 105 states have call successors, (145) [2024-11-24 00:18:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 562 transitions. [2024-11-24 00:18:05,863 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 562 transitions. Word has length 351 [2024-11-24 00:18:05,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:05,864 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 562 transitions. [2024-11-24 00:18:05,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.5) internal successors, (161), 14 states have internal predecessors, (161), 10 states have call successors, (88), 3 states have call predecessors, (88), 5 states have return successors, (87), 10 states have call predecessors, (87), 10 states have call successors, (87) [2024-11-24 00:18:05,865 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 562 transitions. [2024-11-24 00:18:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-24 00:18:05,868 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:05,869 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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] [2024-11-24 00:18:05,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:18:06,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:06,069 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:06,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:06,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2069298937, now seen corresponding path program 2 times [2024-11-24 00:18:06,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:06,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324009335] [2024-11-24 00:18:06,070 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:18:06,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:11,985 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:18:11,986 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:18:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2024-11-24 00:18:19,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:19,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324009335] [2024-11-24 00:18:19,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324009335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:19,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:19,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 00:18:19,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185294623] [2024-11-24 00:18:19,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:19,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:18:19,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:19,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:18:19,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:18:19,603 INFO L87 Difference]: Start difference. First operand 410 states and 562 transitions. Second operand has 14 states, 12 states have (on average 6.583333333333333) internal successors, (79), 10 states have internal predecessors, (79), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-24 00:18:21,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:21,632 INFO L93 Difference]: Finished difference Result 436 states and 616 transitions. [2024-11-24 00:18:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:18:21,632 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.583333333333333) internal successors, (79), 10 states have internal predecessors, (79), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) Word has length 391 [2024-11-24 00:18:21,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:21,637 INFO L225 Difference]: With dead ends: 436 [2024-11-24 00:18:21,637 INFO L226 Difference]: Without dead ends: 434 [2024-11-24 00:18:21,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:18:21,639 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 3 mSDsluCounter, 4749 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5151 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:21,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5151 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 00:18:21,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-24 00:18:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 421. [2024-11-24 00:18:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 269 states have (on average 1.1858736059479553) internal successors, (319), 275 states have internal predecessors, (319), 106 states have call successors, (106), 37 states have call predecessors, (106), 45 states have return successors, (170), 108 states have call predecessors, (170), 105 states have call successors, (170) [2024-11-24 00:18:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 595 transitions. [2024-11-24 00:18:21,695 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 595 transitions. Word has length 391 [2024-11-24 00:18:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:21,696 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 595 transitions. [2024-11-24 00:18:21,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.583333333333333) internal successors, (79), 10 states have internal predecessors, (79), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-24 00:18:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 595 transitions. [2024-11-24 00:18:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-11-24 00:18:21,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:21,700 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 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] [2024-11-24 00:18:21,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:18:21,700 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:21,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash -969397473, now seen corresponding path program 1 times [2024-11-24 00:18:21,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:21,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951461053] [2024-11-24 00:18:21,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:21,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 10 proven. 45 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2024-11-24 00:18:29,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:29,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951461053] [2024-11-24 00:18:29,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951461053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:29,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831533594] [2024-11-24 00:18:29,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:29,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:29,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:29,298 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:29,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:18:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:38,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 5532 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-24 00:18:38,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:38,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:18:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 518 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2024-11-24 00:18:41,252 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:18:41,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831533594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:41,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:18:41,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2024-11-24 00:18:41,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869422487] [2024-11-24 00:18:41,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:41,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:18:41,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:41,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:18:41,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:18:41,255 INFO L87 Difference]: Start difference. First operand 421 states and 595 transitions. Second operand has 13 states, 11 states have (on average 11.727272727272727) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (52), 3 states have call predecessors, (52), 6 states have return successors, (51), 6 states have call predecessors, (51), 5 states have call successors, (51) [2024-11-24 00:18:55,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:55,211 INFO L93 Difference]: Finished difference Result 744 states and 1079 transitions. [2024-11-24 00:18:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:18:55,212 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 11.727272727272727) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (52), 3 states have call predecessors, (52), 6 states have return successors, (51), 6 states have call predecessors, (51), 5 states have call successors, (51) Word has length 372 [2024-11-24 00:18:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:55,217 INFO L225 Difference]: With dead ends: 744 [2024-11-24 00:18:55,217 INFO L226 Difference]: Without dead ends: 429 [2024-11-24 00:18:55,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 361 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:18:55,220 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 315 mSDsluCounter, 3036 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 3460 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:55,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 3460 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2024-11-24 00:18:55,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-24 00:18:55,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 421. [2024-11-24 00:18:55,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 269 states have (on average 1.1858736059479553) internal successors, (319), 275 states have internal predecessors, (319), 106 states have call successors, (106), 37 states have call predecessors, (106), 45 states have return successors, (167), 108 states have call predecessors, (167), 105 states have call successors, (167) [2024-11-24 00:18:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 592 transitions. [2024-11-24 00:18:55,275 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 592 transitions. Word has length 372 [2024-11-24 00:18:55,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:55,275 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 592 transitions. [2024-11-24 00:18:55,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 11.727272727272727) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (52), 3 states have call predecessors, (52), 6 states have return successors, (51), 6 states have call predecessors, (51), 5 states have call successors, (51) [2024-11-24 00:18:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 592 transitions. [2024-11-24 00:18:55,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2024-11-24 00:18:55,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:55,279 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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] [2024-11-24 00:18:55,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:18:55,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:55,480 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:55,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:55,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1687039991, now seen corresponding path program 2 times [2024-11-24 00:18:55,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:55,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631494523] [2024-11-24 00:18:55,481 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:18:55,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:01,689 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:19:01,689 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:19:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 989 trivial. 0 not checked. [2024-11-24 00:19:08,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:08,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631494523] [2024-11-24 00:19:08,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631494523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:08,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:19:08,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 00:19:08,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726874032] [2024-11-24 00:19:08,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:08,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 00:19:08,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:08,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 00:19:08,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:19:08,106 INFO L87 Difference]: Start difference. First operand 421 states and 592 transitions. Second operand has 15 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 11 states have internal predecessors, (82), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-24 00:19:10,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:10,408 INFO L93 Difference]: Finished difference Result 456 states and 655 transitions. [2024-11-24 00:19:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:19:10,408 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 11 states have internal predecessors, (82), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) Word has length 386 [2024-11-24 00:19:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:10,413 INFO L225 Difference]: With dead ends: 456 [2024-11-24 00:19:10,413 INFO L226 Difference]: Without dead ends: 454 [2024-11-24 00:19:10,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:19:10,414 INFO L435 NwaCegarLoop]: 403 mSDtfsCounter, 8 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5160 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:10,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5160 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 00:19:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-11-24 00:19:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 422. [2024-11-24 00:19:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 270 states have (on average 1.1851851851851851) internal successors, (320), 276 states have internal predecessors, (320), 106 states have call successors, (106), 37 states have call predecessors, (106), 45 states have return successors, (167), 108 states have call predecessors, (167), 105 states have call successors, (167) [2024-11-24 00:19:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 593 transitions. [2024-11-24 00:19:10,467 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 593 transitions. Word has length 386 [2024-11-24 00:19:10,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:10,467 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 593 transitions. [2024-11-24 00:19:10,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 11 states have internal predecessors, (82), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-24 00:19:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 593 transitions. [2024-11-24 00:19:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-24 00:19:10,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:10,472 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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] [2024-11-24 00:19:10,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:19:10,472 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:10,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1582590607, now seen corresponding path program 1 times [2024-11-24 00:19:10,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:10,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023837439] [2024-11-24 00:19:10,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:10,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 13 proven. 44 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2024-11-24 00:19:23,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:23,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023837439] [2024-11-24 00:19:23,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023837439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:23,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637593665] [2024-11-24 00:19:23,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:23,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:23,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:23,643 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:23,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:19:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:32,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 5630 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-24 00:19:32,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:33,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:19:33,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:19:33,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2024-11-24 00:19:37,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 23 [2024-11-24 00:19:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 563 proven. 39 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-24 00:19:54,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:57,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637593665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:57,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:19:57,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2024-11-24 00:19:57,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268444929] [2024-11-24 00:19:57,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:57,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-24 00:19:57,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:57,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-24 00:19:57,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 00:19:57,586 INFO L87 Difference]: Start difference. First operand 422 states and 593 transitions. Second operand has 33 states, 29 states have (on average 6.068965517241379) internal successors, (176), 30 states have internal predecessors, (176), 14 states have call successors, (85), 4 states have call predecessors, (85), 11 states have return successors, (86), 14 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-24 00:21:30,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:30,649 INFO L93 Difference]: Finished difference Result 1099 states and 1617 transitions. [2024-11-24 00:21:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-24 00:21:30,649 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 6.068965517241379) internal successors, (176), 30 states have internal predecessors, (176), 14 states have call successors, (85), 4 states have call predecessors, (85), 11 states have return successors, (86), 14 states have call predecessors, (86), 14 states have call successors, (86) Word has length 395 [2024-11-24 00:21:30,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:30,658 INFO L225 Difference]: With dead ends: 1099 [2024-11-24 00:21:30,658 INFO L226 Difference]: Without dead ends: 783 [2024-11-24 00:21:30,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 359 SyntacticMatches, 39 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=410, Invalid=4702, Unknown=0, NotChecked=0, Total=5112 [2024-11-24 00:21:30,663 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 919 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10022 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 10724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 10022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:30,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1608 Invalid, 10724 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [702 Valid, 10022 Invalid, 0 Unknown, 0 Unchecked, 83.2s Time] [2024-11-24 00:21:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-11-24 00:21:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 753. [2024-11-24 00:21:30,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 481 states have (on average 1.1954261954261953) internal successors, (575), 492 states have internal predecessors, (575), 194 states have call successors, (194), 60 states have call predecessors, (194), 77 states have return successors, (293), 200 states have call predecessors, (293), 192 states have call successors, (293) [2024-11-24 00:21:30,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1062 transitions. [2024-11-24 00:21:30,819 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1062 transitions. Word has length 395 [2024-11-24 00:21:30,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:30,820 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 1062 transitions. [2024-11-24 00:21:30,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 6.068965517241379) internal successors, (176), 30 states have internal predecessors, (176), 14 states have call successors, (85), 4 states have call predecessors, (85), 11 states have return successors, (86), 14 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-24 00:21:30,821 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1062 transitions. [2024-11-24 00:21:30,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-11-24 00:21:30,826 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:30,827 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2024-11-24 00:21:30,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:21:31,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:31,028 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:31,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash 150191984, now seen corresponding path program 1 times [2024-11-24 00:21:31,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:31,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198857103] [2024-11-24 00:21:31,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:31,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 20 proven. 40 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2024-11-24 00:21:41,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198857103] [2024-11-24 00:21:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198857103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758610028] [2024-11-24 00:21:41,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:41,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:41,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:41,248 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:41,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:21:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:53,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 5626 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-24 00:21:53,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:54,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:22:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 687 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-11-24 00:22:03,724 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:22:03,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758610028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:22:03,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:22:03,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2024-11-24 00:22:03,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112600022] [2024-11-24 00:22:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:22:03,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:22:03,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:03,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:22:03,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:22:03,727 INFO L87 Difference]: Start difference. First operand 753 states and 1062 transitions. Second operand has 14 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 7 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (53), 8 states have call predecessors, (53), 7 states have call successors, (53) [2024-11-24 00:22:21,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:22:21,680 INFO L93 Difference]: Finished difference Result 1263 states and 1821 transitions. [2024-11-24 00:22:21,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 00:22:21,681 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 7 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (53), 8 states have call predecessors, (53), 7 states have call successors, (53) Word has length 396 [2024-11-24 00:22:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:22:21,689 INFO L225 Difference]: With dead ends: 1263 [2024-11-24 00:22:21,689 INFO L226 Difference]: Without dead ends: 769 [2024-11-24 00:22:21,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 366 SyntacticMatches, 19 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:22:21,693 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 314 mSDsluCounter, 3517 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 3940 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:22:21,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 3940 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2024-11-24 00:22:21,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-11-24 00:22:21,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 753. [2024-11-24 00:22:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 481 states have (on average 1.1954261954261953) internal successors, (575), 492 states have internal predecessors, (575), 194 states have call successors, (194), 60 states have call predecessors, (194), 77 states have return successors, (283), 200 states have call predecessors, (283), 192 states have call successors, (283) [2024-11-24 00:22:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1052 transitions. [2024-11-24 00:22:21,844 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1052 transitions. Word has length 396 [2024-11-24 00:22:21,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:22:21,845 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 1052 transitions. [2024-11-24 00:22:21,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 7 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (53), 8 states have call predecessors, (53), 7 states have call successors, (53) [2024-11-24 00:22:21,846 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1052 transitions. [2024-11-24 00:22:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-11-24 00:22:21,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:22:21,852 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2024-11-24 00:22:21,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 00:22:22,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:22:22,053 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:22:22,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:22,053 INFO L85 PathProgramCache]: Analyzing trace with hash 461880208, now seen corresponding path program 1 times [2024-11-24 00:22:22,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:22,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299242230] [2024-11-24 00:22:22,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:22,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 34 proven. 53 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2024-11-24 00:22:34,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:34,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299242230] [2024-11-24 00:22:34,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299242230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:22:34,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947503696] [2024-11-24 00:22:34,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:34,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:22:34,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:22:34,710 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:22:34,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:22:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:46,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 5714 conjuncts, 134 conjuncts are in the unsatisfiable core [2024-11-24 00:22:46,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:22:48,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:22:48,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2024-11-24 00:22:48,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:22:53,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 25 [2024-11-24 00:23:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 802 proven. 22 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2024-11-24 00:23:04,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:23:09,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947503696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:09,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:23:09,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20] total 29 [2024-11-24 00:23:09,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994266399] [2024-11-24 00:23:09,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:23:09,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-24 00:23:09,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:09,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-24 00:23:09,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=969, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 00:23:09,741 INFO L87 Difference]: Start difference. First operand 753 states and 1052 transitions. Second operand has 29 states, 24 states have (on average 7.875) internal successors, (189), 29 states have internal predecessors, (189), 13 states have call successors, (72), 3 states have call predecessors, (72), 10 states have return successors, (73), 10 states have call predecessors, (73), 13 states have call successors, (73) [2024-11-24 00:24:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:24:07,605 INFO L93 Difference]: Finished difference Result 1716 states and 2474 transitions. [2024-11-24 00:24:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-24 00:24:07,606 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 7.875) internal successors, (189), 29 states have internal predecessors, (189), 13 states have call successors, (72), 3 states have call predecessors, (72), 10 states have return successors, (73), 10 states have call predecessors, (73), 13 states have call successors, (73) Word has length 426 [2024-11-24 00:24:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:24:07,620 INFO L225 Difference]: With dead ends: 1716 [2024-11-24 00:24:07,620 INFO L226 Difference]: Without dead ends: 1154 [2024-11-24 00:24:07,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 504 SyntacticMatches, 20 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=367, Invalid=4055, Unknown=0, NotChecked=0, Total=4422 [2024-11-24 00:24:07,626 INFO L435 NwaCegarLoop]: 412 mSDtfsCounter, 571 mSDsluCounter, 7212 mSDsCounter, 0 mSdLazyCounter, 4817 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 7624 SdHoareTripleChecker+Invalid, 5136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 4817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:24:07,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 7624 Invalid, 5136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [319 Valid, 4817 Invalid, 0 Unknown, 0 Unchecked, 45.6s Time] [2024-11-24 00:24:07,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2024-11-24 00:24:07,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1134. [2024-11-24 00:24:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 732 states have (on average 1.1967213114754098) internal successors, (876), 752 states have internal predecessors, (876), 283 states have call successors, (283), 86 states have call predecessors, (283), 118 states have return successors, (459), 295 states have call predecessors, (459), 280 states have call successors, (459) [2024-11-24 00:24:07,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1618 transitions. [2024-11-24 00:24:07,868 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1618 transitions. Word has length 426 [2024-11-24 00:24:07,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:24:07,868 INFO L471 AbstractCegarLoop]: Abstraction has 1134 states and 1618 transitions. [2024-11-24 00:24:07,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 7.875) internal successors, (189), 29 states have internal predecessors, (189), 13 states have call successors, (72), 3 states have call predecessors, (72), 10 states have return successors, (73), 10 states have call predecessors, (73), 13 states have call successors, (73) [2024-11-24 00:24:07,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1618 transitions. [2024-11-24 00:24:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2024-11-24 00:24:07,876 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:24:07,876 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 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] [2024-11-24 00:24:07,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 00:24:08,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:24:08,077 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:24:08,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:24:08,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1867982309, now seen corresponding path program 1 times [2024-11-24 00:24:08,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:24:08,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567777023] [2024-11-24 00:24:08,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:08,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:24:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 1131 trivial. 0 not checked. [2024-11-24 00:24:15,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:24:15,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567777023] [2024-11-24 00:24:15,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567777023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:24:15,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116715760] [2024-11-24 00:24:15,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:15,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:24:15,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:24:15,029 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:24:15,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 00:24:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:24,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 5688 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:24:24,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:24:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2024-11-24 00:24:25,704 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:24:25,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116715760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:24:25,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:24:25,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-24 00:24:25,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752695726] [2024-11-24 00:24:25,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:24:25,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:24:25,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:24:25,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:24:25,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:24:25,707 INFO L87 Difference]: Start difference. First operand 1134 states and 1618 transitions. Second operand has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 4 states have call successors, (38) [2024-11-24 00:24:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:24:28,009 INFO L93 Difference]: Finished difference Result 1938 states and 2794 transitions. [2024-11-24 00:24:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:24:28,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 4 states have call successors, (38) Word has length 416 [2024-11-24 00:24:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:24:28,021 INFO L225 Difference]: With dead ends: 1938 [2024-11-24 00:24:28,022 INFO L226 Difference]: Without dead ends: 1128 [2024-11-24 00:24:28,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:24:28,029 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 468 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:24:28,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1322 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 00:24:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2024-11-24 00:24:28,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1110. [2024-11-24 00:24:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 714 states have (on average 1.1932773109243697) internal successors, (852), 728 states have internal predecessors, (852), 283 states have call successors, (283), 86 states have call predecessors, (283), 112 states have return successors, (423), 295 states have call predecessors, (423), 280 states have call successors, (423) [2024-11-24 00:24:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1558 transitions. [2024-11-24 00:24:28,401 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1558 transitions. Word has length 416 [2024-11-24 00:24:28,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:24:28,402 INFO L471 AbstractCegarLoop]: Abstraction has 1110 states and 1558 transitions. [2024-11-24 00:24:28,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 4 states have call successors, (38) [2024-11-24 00:24:28,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1558 transitions. [2024-11-24 00:24:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-11-24 00:24:28,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:24:28,413 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2024-11-24 00:24:28,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 00:24:28,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:24:28,614 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:24:28,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:24:28,615 INFO L85 PathProgramCache]: Analyzing trace with hash -943671464, now seen corresponding path program 1 times [2024-11-24 00:24:28,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:24:28,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569355449] [2024-11-24 00:24:28,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:28,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:24:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 1417 trivial. 0 not checked. [2024-11-24 00:24:43,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:24:43,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569355449] [2024-11-24 00:24:43,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569355449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:24:43,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924717288] [2024-11-24 00:24:43,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:43,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:24:43,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:24:43,465 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:24:43,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 00:24:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:54,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 5844 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:24:54,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:24:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 593 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2024-11-24 00:24:55,287 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:24:55,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924717288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:24:55,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:24:55,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-24 00:24:55,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105988652] [2024-11-24 00:24:55,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:24:55,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:24:55,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:24:55,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:24:55,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:24:55,290 INFO L87 Difference]: Start difference. First operand 1110 states and 1558 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2024-11-24 00:24:56,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:24:56,644 INFO L93 Difference]: Finished difference Result 2129 states and 3005 transitions. [2024-11-24 00:24:56,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:24:56,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 464 [2024-11-24 00:24:56,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:24:56,654 INFO L225 Difference]: With dead ends: 2129 [2024-11-24 00:24:56,655 INFO L226 Difference]: Without dead ends: 1114 [2024-11-24 00:24:56,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:24:56,661 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 0 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:24:56,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1903 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 00:24:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-11-24 00:24:56,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1102. [2024-11-24 00:24:56,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 707 states have (on average 1.1895332390381896) internal successors, (841), 722 states have internal predecessors, (841), 283 states have call successors, (283), 86 states have call predecessors, (283), 111 states have return successors, (424), 293 states have call predecessors, (424), 280 states have call successors, (424) [2024-11-24 00:24:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1548 transitions. [2024-11-24 00:24:56,901 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1548 transitions. Word has length 464 [2024-11-24 00:24:56,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:24:56,902 INFO L471 AbstractCegarLoop]: Abstraction has 1102 states and 1548 transitions. [2024-11-24 00:24:56,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2024-11-24 00:24:56,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1548 transitions. [2024-11-24 00:24:56,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-24 00:24:56,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:24:56,909 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 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, 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] [2024-11-24 00:24:56,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-24 00:24:57,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 00:24:57,110 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:24:57,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:24:57,111 INFO L85 PathProgramCache]: Analyzing trace with hash -836961175, now seen corresponding path program 1 times [2024-11-24 00:24:57,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:24:57,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448362706] [2024-11-24 00:24:57,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:25:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 20 proven. 50 refuted. 0 times theorem prover too weak. 1114 trivial. 0 not checked. [2024-11-24 00:25:06,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:25:06,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448362706] [2024-11-24 00:25:06,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448362706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:25:06,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875210556] [2024-11-24 00:25:06,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:06,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:25:06,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:25:06,354 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:25:06,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 00:25:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:17,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 5894 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-24 00:25:17,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:25:19,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:25:19,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:25:19,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2024-11-24 00:25:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 437 proven. 3 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2024-11-24 00:25:23,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:25:31,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875210556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:25:31,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:25:31,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 17] total 22 [2024-11-24 00:25:31,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537029098] [2024-11-24 00:25:31,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:25:31,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 00:25:31,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:25:31,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 00:25:31,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2024-11-24 00:25:31,184 INFO L87 Difference]: Start difference. First operand 1102 states and 1548 transitions. Second operand has 22 states, 18 states have (on average 10.555555555555555) internal successors, (190), 20 states have internal predecessors, (190), 8 states have call successors, (86), 3 states have call predecessors, (86), 8 states have return successors, (86), 7 states have call predecessors, (86), 8 states have call successors, (86) [2024-11-24 00:25:36,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:25:45,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:25:50,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:25:57,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:26:05,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:26:10,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:26:14,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:26:16,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:26:16,727 INFO L93 Difference]: Finished difference Result 2319 states and 3228 transitions. [2024-11-24 00:26:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-24 00:26:16,728 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 10.555555555555555) internal successors, (190), 20 states have internal predecessors, (190), 8 states have call successors, (86), 3 states have call predecessors, (86), 8 states have return successors, (86), 7 states have call predecessors, (86), 8 states have call successors, (86) Word has length 431 [2024-11-24 00:26:16,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:26:16,739 INFO L225 Difference]: With dead ends: 2319 [2024-11-24 00:26:16,739 INFO L226 Difference]: Without dead ends: 1276 [2024-11-24 00:26:16,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=136, Invalid=1196, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 00:26:16,746 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 115 mSDsluCounter, 7053 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 25 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 7555 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:26:16,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 7555 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1501 Invalid, 7 Unknown, 0 Unchecked, 42.4s Time] [2024-11-24 00:26:16,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2024-11-24 00:26:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1263. [2024-11-24 00:26:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 814 states have (on average 1.1744471744471745) internal successors, (956), 833 states have internal predecessors, (956), 314 states have call successors, (314), 104 states have call predecessors, (314), 134 states have return successors, (433), 325 states have call predecessors, (433), 311 states have call successors, (433) [2024-11-24 00:26:16,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1703 transitions. [2024-11-24 00:26:16,963 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1703 transitions. Word has length 431 [2024-11-24 00:26:16,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:26:16,964 INFO L471 AbstractCegarLoop]: Abstraction has 1263 states and 1703 transitions. [2024-11-24 00:26:16,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 10.555555555555555) internal successors, (190), 20 states have internal predecessors, (190), 8 states have call successors, (86), 3 states have call predecessors, (86), 8 states have return successors, (86), 7 states have call predecessors, (86), 8 states have call successors, (86) [2024-11-24 00:26:16,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1703 transitions. [2024-11-24 00:26:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-24 00:26:16,971 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:26:16,971 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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, 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] [2024-11-24 00:26:17,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 00:26:17,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:26:17,172 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:26:17,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:26:17,173 INFO L85 PathProgramCache]: Analyzing trace with hash -474980834, now seen corresponding path program 1 times [2024-11-24 00:26:17,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:26:17,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715486202] [2024-11-24 00:26:17,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:26:17,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:26:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:26:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 3 proven. 82 refuted. 0 times theorem prover too weak. 1319 trivial. 0 not checked. [2024-11-24 00:26:32,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:26:32,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715486202] [2024-11-24 00:26:32,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715486202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:26:32,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745968603] [2024-11-24 00:26:32,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:26:32,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:26:32,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:26:32,866 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:26:32,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc5daa89-c72f-4531-bddc-e5fa64826d9c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 00:26:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:26:44,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 6014 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-24 00:26:44,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:26:46,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2024-11-24 00:26:46,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:26:46,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:26:52,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 728 proven. 4 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-11-24 00:26:52,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:26:58,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745968603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:26:58,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:26:58,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 19] total 24 [2024-11-24 00:26:58,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55311086] [2024-11-24 00:26:58,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:26:58,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 00:26:58,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:26:58,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 00:26:58,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2024-11-24 00:26:58,577 INFO L87 Difference]: Start difference. First operand 1263 states and 1703 transitions. Second operand has 24 states, 19 states have (on average 9.421052631578947) internal successors, (179), 21 states have internal predecessors, (179), 9 states have call successors, (81), 3 states have call predecessors, (81), 9 states have return successors, (82), 8 states have call predecessors, (82), 9 states have call successors, (82) [2024-11-24 00:27:05,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:27:16,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:27:20,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:27:24,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:27:28,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:27:33,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]