./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/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_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1 --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-d790fec [2024-12-02 12:59:11,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:59:11,901 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 12:59:11,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:59:11,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:59:11,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:59:11,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:59:11,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:59:11,929 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:59:11,929 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:59:11,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:59:11,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:59:11,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:59:11,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:59:11,929 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:59:11,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:59:11,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:59:11,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:59:11,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:59:11,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:59:11,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:59:11,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:59:11,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:59:11,930 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:59:11,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:59:11,930 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:59:11,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:59:11,931 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:59:11,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:59:11,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:59:11,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:59:11,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:59:11,931 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:59:11,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:59:11,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:59:11,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:59:11,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:59:11,931 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:59:11,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:59:11,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:59:11,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:59:11,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:59:11,932 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:59:11,932 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:59:11,932 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:59:11,932 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_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1 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 [2024-12-02 12:59:12,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:59:12,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:59:12,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:59:12,205 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:59:12,206 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:59:12,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i [2024-12-02 12:59:14,919 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/data/371e1a3b3/4230a6d4cd1144ed875fb471e02b041b/FLAG88e5334b5 [2024-12-02 12:59:15,328 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:59:15,329 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i [2024-12-02 12:59:15,358 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/data/371e1a3b3/4230a6d4cd1144ed875fb471e02b041b/FLAG88e5334b5 [2024-12-02 12:59:15,373 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/data/371e1a3b3/4230a6d4cd1144ed875fb471e02b041b [2024-12-02 12:59:15,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:59:15,377 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:59:15,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:59:15,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:59:15,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:59:15,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:59:15" (1/1) ... [2024-12-02 12:59:15,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4361646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:15, skipping insertion in model container [2024-12-02 12:59:15,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:59:15" (1/1) ... [2024-12-02 12:59:15,461 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:59:15,698 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_282717c2-af14-4b1d-a433-bd35ac6adf10/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[4491,4504] [2024-12-02 12:59:15,705 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_282717c2-af14-4b1d-a433-bd35ac6adf10/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[4551,4564] [2024-12-02 12:59:16,772 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:16,773 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:16,773 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:16,774 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:16,775 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:16,791 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:16,791 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:16,793 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:16,794 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:16,795 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:16,796 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:16,797 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:16,797 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,943 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,944 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,965 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,966 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,972 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,972 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,984 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,985 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,986 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,986 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,986 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,986 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:17,986 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,015 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_282717c2-af14-4b1d-a433-bd35ac6adf10/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[228442,228455] [2024-12-02 12:59:18,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:59:18,041 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:59:18,051 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_282717c2-af14-4b1d-a433-bd35ac6adf10/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[4491,4504] [2024-12-02 12:59:18,052 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_282717c2-af14-4b1d-a433-bd35ac6adf10/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[4551,4564] [2024-12-02 12:59:18,085 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,085 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,085 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,086 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,086 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,093 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,093 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,094 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,094 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,095 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,096 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,096 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,097 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,184 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2024-12-02 12:59:18,257 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,258 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,265 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,266 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,268 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,269 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,277 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,278 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,278 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,279 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,279 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,279 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,279 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 12:59:18,301 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_282717c2-af14-4b1d-a433-bd35ac6adf10/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[228442,228455] [2024-12-02 12:59:18,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:59:18,469 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:59:18,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18 WrapperNode [2024-12-02 12:59:18,470 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:59:18,471 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:59:18,471 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:59:18,471 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:59:18,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,611 INFO L138 Inliner]: procedures = 763, calls = 2450, calls flagged for inlining = 69, calls inlined = 18, statements flattened = 970 [2024-12-02 12:59:18,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:59:18,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:59:18,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:59:18,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:59:18,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,715 INFO L175 MemorySlicer]: Split 320 memory accesses to 11 slices as follows [3, 238, 2, 39, 3, 5, 4, 2, 6, 13, 5]. 74 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [0, 6, 2, 0, 0, 1, 0, 0, 0, 0, 5]. The 250 writes are split as follows [3, 232, 0, 5, 1, 2, 3, 1, 2, 1, 0]. [2024-12-02 12:59:18,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,753 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:59:18,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:59:18,795 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:59:18,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:59:18,796 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (1/1) ... [2024-12-02 12:59:18,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:59:18,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:59:18,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:59:18,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:59:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-12-02 12:59:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-12-02 12:59:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-12-02 12:59:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-12-02 12:59:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-12-02 12:59:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-12-02 12:59:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-12-02 12:59:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-12-02 12:59:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-12-02 12:59:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-12-02 12:59:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-12-02 12:59:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2024-12-02 12:59:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2024-12-02 12:59:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2024-12-02 12:59:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2024-12-02 12:59:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2024-12-02 12:59:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2024-12-02 12:59:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 12:59:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2024-12-02 12:59:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2024-12-02 12:59:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 12:59:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 12:59:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 12:59:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 12:59:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 12:59:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-12-02 12:59:18,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-12-02 12:59:18,859 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-12-02 12:59:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-12-02 12:59:18,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 12:59:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 12:59:18,859 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-12-02 12:59:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-12-02 12:59:18,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 12:59:18,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:59:18,859 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-12-02 12:59:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-12-02 12:59:18,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 12:59:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 12:59:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 12:59:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 12:59:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 12:59:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 12:59:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 12:59:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 12:59:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-12-02 12:59:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-12-02 12:59:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-12-02 12:59:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2024-12-02 12:59:18,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2024-12-02 12:59:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2024-12-02 12:59:18,861 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2024-12-02 12:59:18,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:59:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:59:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 12:59:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 12:59:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-12-02 12:59:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-12-02 12:59:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 12:59:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 12:59:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 12:59:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 12:59:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 12:59:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 12:59:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 12:59:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2024-12-02 12:59:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 12:59:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-12-02 12:59:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 12:59:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-12-02 12:59:18,865 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-12-02 12:59:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2024-12-02 12:59:18,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-12-02 12:59:18,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-12-02 12:59:18,866 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 12:59:18,866 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2024-12-02 12:59:18,866 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 12:59:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 12:59:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 12:59:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 12:59:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-12-02 12:59:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-12-02 12:59:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2024-12-02 12:59:18,867 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2024-12-02 12:59:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-12-02 12:59:18,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-12-02 12:59:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:59:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:59:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 12:59:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 12:59:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 12:59:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 12:59:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 12:59:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 12:59:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 12:59:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 12:59:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 12:59:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-12-02 12:59:18,868 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-12-02 12:59:19,235 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:59:19,237 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:59:19,272 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 12:59:19,295 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume false; [2024-12-02 12:59:19,295 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !false; [2024-12-02 12:59:19,525 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 12:59:19,547 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2024-12-02 12:59:19,547 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2024-12-02 12:59:19,728 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 12:59:19,729 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 12:59:19,729 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 12:59:19,730 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 12:59:19,731 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 12:59:25,572 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume false; [2024-12-02 12:59:25,572 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2024-12-02 12:59:25,572 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !false; [2024-12-02 12:59:25,572 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume false; [2024-12-02 12:59:25,572 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2024-12-02 12:59:25,572 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##61: assume false; [2024-12-02 12:59:25,572 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##62: assume !false; [2024-12-02 12:59:25,573 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##52: assume !false; [2024-12-02 12:59:25,573 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##51: assume false; [2024-12-02 12:59:25,573 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume !false; [2024-12-02 12:59:25,681 INFO L? ?]: Removed 285 outVars from TransFormulas that were not future-live. [2024-12-02 12:59:25,681 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:59:25,697 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:59:25,697 INFO L312 CfgBuilder]: Removed 10 assume(true) statements. [2024-12-02 12:59:25,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:59:25 BoogieIcfgContainer [2024-12-02 12:59:25,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:59:25,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:59:25,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:59:25,705 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:59:25,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:59:15" (1/3) ... [2024-12-02 12:59:25,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d2a151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:59:25, skipping insertion in model container [2024-12-02 12:59:25,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:59:18" (2/3) ... [2024-12-02 12:59:25,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d2a151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:59:25, skipping insertion in model container [2024-12-02 12:59:25,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:59:25" (3/3) ... [2024-12-02 12:59:25,708 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness_negated.i [2024-12-02 12:59:25,723 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:59:25,725 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. [2024-12-02 12:59:25,805 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:59:25,817 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;@5882ecb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:59:25,818 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:59:25,822 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) [2024-12-02 12:59:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-12-02 12:59:25,835 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:59:25,836 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] [2024-12-02 12:59:25,836 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:59:25,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:59:25,842 INFO L85 PathProgramCache]: Analyzing trace with hash 810534844, now seen corresponding path program 1 times [2024-12-02 12:59:25,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:59:25,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617763701] [2024-12-02 12:59:25,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:25,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:59:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2024-12-02 12:59:31,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:59:31,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617763701] [2024-12-02 12:59:31,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617763701] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:59:31,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310843754] [2024-12-02 12:59:31,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:31,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:59:31,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:59:31,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:59:31,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:59:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:37,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 5303 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:59:37,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:59:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-12-02 12:59:37,520 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:59:37,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310843754] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:59:37,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:59:37,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 12:59:37,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621972186] [2024-12-02 12:59:37,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:59:37,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:59:37,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:59:37,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:59:37,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:59:37,550 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) [2024-12-02 12:59:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:59:37,610 INFO L93 Difference]: Finished difference Result 620 states and 930 transitions. [2024-12-02 12:59:37,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:59:37,612 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 [2024-12-02 12:59:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:59:37,622 INFO L225 Difference]: With dead ends: 620 [2024-12-02 12:59:37,622 INFO L226 Difference]: Without dead ends: 306 [2024-12-02 12:59:37,627 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 [2024-12-02 12:59:37,630 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 [2024-12-02 12:59:37,630 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] [2024-12-02 12:59:37,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-12-02 12:59:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2024-12-02 12:59:37,674 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) [2024-12-02 12:59:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 412 transitions. [2024-12-02 12:59:37,682 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 412 transitions. Word has length 293 [2024-12-02 12:59:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:59:37,683 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 412 transitions. [2024-12-02 12:59:37,683 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) [2024-12-02 12:59:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 412 transitions. [2024-12-02 12:59:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-12-02 12:59:37,689 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:59:37,689 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] [2024-12-02 12:59:37,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:59:37,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 12:59:37,890 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:59:37,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:59:37,891 INFO L85 PathProgramCache]: Analyzing trace with hash -5436950, now seen corresponding path program 1 times [2024-12-02 12:59:37,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:59:37,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379005627] [2024-12-02 12:59:37,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:37,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:59:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-12-02 12:59:43,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:59:43,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379005627] [2024-12-02 12:59:43,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379005627] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:59:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161268157] [2024-12-02 12:59:43,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:43,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:59:43,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:59:43,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:59:43,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:59:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:49,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 5303 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 12:59:49,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:59:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2024-12-02 12:59:50,679 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:59:50,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161268157] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:59:50,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:59:50,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-12-02 12:59:50,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278989455] [2024-12-02 12:59:50,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:59:50,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:59:50,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:59:50,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:59:50,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:59:50,683 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) [2024-12-02 12:59:52,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:59:52,941 INFO L93 Difference]: Finished difference Result 316 states and 422 transitions. [2024-12-02 12:59:52,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:59:52,942 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 [2024-12-02 12:59:52,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:59:52,947 INFO L225 Difference]: With dead ends: 316 [2024-12-02 12:59:52,947 INFO L226 Difference]: Without dead ends: 314 [2024-12-02 12:59:52,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:59:52,948 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 50 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:59:52,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 2567 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 12:59:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-12-02 12:59:52,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 311. [2024-12-02 12:59:52,979 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) [2024-12-02 12:59:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 417 transitions. [2024-12-02 12:59:52,984 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 417 transitions. Word has length 293 [2024-12-02 12:59:52,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:59:52,985 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 417 transitions. [2024-12-02 12:59:52,985 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) [2024-12-02 12:59:52,985 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 417 transitions. [2024-12-02 12:59:52,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-12-02 12:59:52,991 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:59:52,992 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] [2024-12-02 12:59:53,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:59:53,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:59:53,192 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:59:53,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:59:53,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1104625542, now seen corresponding path program 1 times [2024-12-02 12:59:53,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:59:53,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611802481] [2024-12-02 12:59:53,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:53,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:59:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-12-02 12:59:58,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:59:58,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611802481] [2024-12-02 12:59:58,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611802481] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:59:58,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306908047] [2024-12-02 12:59:58,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:58,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:59:58,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:59:58,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:59:58,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:00:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:00:03,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 5314 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 13:00:03,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:00:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2024-12-02 13:00:04,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:00:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306908047] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:00:04,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:00:04,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-12-02 13:00:04,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126904192] [2024-12-02 13:00:04,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:00:04,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:00:04,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:00:04,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:00:04,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:00:04,868 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) [2024-12-02 13:00:07,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:00:07,079 INFO L93 Difference]: Finished difference Result 321 states and 427 transitions. [2024-12-02 13:00:07,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:00:07,080 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 [2024-12-02 13:00:07,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:00:07,086 INFO L225 Difference]: With dead ends: 321 [2024-12-02 13:00:07,086 INFO L226 Difference]: Without dead ends: 319 [2024-12-02 13:00:07,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:00:07,088 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 50 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:00:07,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 2567 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 13:00:07,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-12-02 13:00:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 316. [2024-12-02 13:00:07,109 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) [2024-12-02 13:00:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 422 transitions. [2024-12-02 13:00:07,113 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 422 transitions. Word has length 297 [2024-12-02 13:00:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:00:07,114 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 422 transitions. [2024-12-02 13:00:07,114 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) [2024-12-02 13:00:07,114 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 422 transitions. [2024-12-02 13:00:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-12-02 13:00:07,117 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:00:07,117 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] [2024-12-02 13:00:07,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:00:07,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:00:07,318 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:00:07,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:00:07,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1011245719, now seen corresponding path program 1 times [2024-12-02 13:00:07,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:00:07,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096694307] [2024-12-02 13:00:07,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:00:07,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:00:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:00:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2024-12-02 13:00:12,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:00:12,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096694307] [2024-12-02 13:00:12,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096694307] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:00:12,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594255485] [2024-12-02 13:00:12,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:00:12,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:00:12,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:00:12,349 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:00:12,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:00:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:00:17,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 5328 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 13:00:17,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:00:18,556 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 [2024-12-02 13:00:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-12-02 13:00:20,023 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:00:20,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594255485] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:00:20,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:00:20,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2024-12-02 13:00:20,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752394195] [2024-12-02 13:00:20,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:00:20,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 13:00:20,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:00:20,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 13:00:20,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:00:20,025 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) [2024-12-02 13:00:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:00:29,387 INFO L93 Difference]: Finished difference Result 705 states and 960 transitions. [2024-12-02 13:00:29,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 13:00:29,388 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 [2024-12-02 13:00:29,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:00:29,391 INFO L225 Difference]: With dead ends: 705 [2024-12-02 13:00:29,391 INFO L226 Difference]: Without dead ends: 393 [2024-12-02 13:00:29,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:00:29,393 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 401 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s 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, 8.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:00:29,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 2660 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-12-02 13:00:29,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-12-02 13:00:29,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2024-12-02 13:00:29,433 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) [2024-12-02 13:00:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 522 transitions. [2024-12-02 13:00:29,438 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 522 transitions. Word has length 302 [2024-12-02 13:00:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:00:29,438 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 522 transitions. [2024-12-02 13:00:29,439 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) [2024-12-02 13:00:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 522 transitions. [2024-12-02 13:00:29,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-12-02 13:00:29,442 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:00:29,442 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] [2024-12-02 13:00:29,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 13:00:29,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:00:29,643 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:00:29,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:00:29,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1748324907, now seen corresponding path program 1 times [2024-12-02 13:00:29,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:00:29,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775096085] [2024-12-02 13:00:29,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:00:29,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:00:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:00:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2024-12-02 13:00:34,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:00:34,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775096085] [2024-12-02 13:00:34,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775096085] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:00:34,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606287885] [2024-12-02 13:00:34,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:00:34,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:00:34,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:00:34,916 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:00:34,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:00:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:00:40,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 5323 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:00:40,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:00:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-12-02 13:00:41,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:00:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606287885] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:00:41,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:00:41,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-12-02 13:00:41,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970864562] [2024-12-02 13:00:41,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:00:41,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:00:41,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:00:41,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:00:41,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:00:41,469 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) [2024-12-02 13:00:43,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:00:43,275 INFO L93 Difference]: Finished difference Result 711 states and 983 transitions. [2024-12-02 13:00:43,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:00:43,275 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 [2024-12-02 13:00:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:00:43,278 INFO L225 Difference]: With dead ends: 711 [2024-12-02 13:00:43,278 INFO L226 Difference]: Without dead ends: 394 [2024-12-02 13:00:43,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:00:43,280 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 425 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:00:43,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1010 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 13:00:43,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-12-02 13:00:43,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2024-12-02 13:00:43,317 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) [2024-12-02 13:00:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 542 transitions. [2024-12-02 13:00:43,321 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 542 transitions. Word has length 302 [2024-12-02 13:00:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:00:43,321 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 542 transitions. [2024-12-02 13:00:43,322 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) [2024-12-02 13:00:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 542 transitions. [2024-12-02 13:00:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-12-02 13:00:43,324 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:00:43,325 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] [2024-12-02 13:00:43,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:00:43,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:00:43,525 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:00:43,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:00:43,526 INFO L85 PathProgramCache]: Analyzing trace with hash -575760658, now seen corresponding path program 1 times [2024-12-02 13:00:43,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:00:43,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162443344] [2024-12-02 13:00:43,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:00:43,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:00:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:00:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2024-12-02 13:00:48,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:00:48,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162443344] [2024-12-02 13:00:48,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162443344] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:00:48,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660237562] [2024-12-02 13:00:48,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:00:48,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:00:48,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:00:48,832 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:00:48,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:00:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:00:54,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 5352 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 13:00:54,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:00:55,515 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 [2024-12-02 13:00:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-12-02 13:00:57,502 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:00:57,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660237562] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:00:57,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:00:57,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5] total 16 [2024-12-02 13:00:57,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859156336] [2024-12-02 13:00:57,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:00:57,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:00:57,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:00:57,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:00:57,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:00:57,504 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) [2024-12-02 13:01:12,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:01:12,037 INFO L93 Difference]: Finished difference Result 730 states and 1063 transitions. [2024-12-02 13:01:12,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 13:01:12,037 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 [2024-12-02 13:01:12,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:01:12,043 INFO L225 Difference]: With dead ends: 730 [2024-12-02 13:01:12,043 INFO L226 Difference]: Without dead ends: 408 [2024-12-02 13:01:12,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 297 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-12-02 13:01:12,046 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 383 mSDsluCounter, 3465 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 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, 13.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:01:12,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 3909 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2024-12-02 13:01:12,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-12-02 13:01:12,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 397. [2024-12-02 13:01:12,109 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) [2024-12-02 13:01:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 549 transitions. [2024-12-02 13:01:12,113 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 549 transitions. Word has length 308 [2024-12-02 13:01:12,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:01:12,114 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 549 transitions. [2024-12-02 13:01:12,114 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) [2024-12-02 13:01:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 549 transitions. [2024-12-02 13:01:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-12-02 13:01:12,118 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:01:12,118 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] [2024-12-02 13:01:12,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 13:01:12,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:01:12,319 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:01:12,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:01:12,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1556646869, now seen corresponding path program 1 times [2024-12-02 13:01:12,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:01:12,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349517155] [2024-12-02 13:01:12,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:01:12,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:01:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:01:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2024-12-02 13:01:17,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:01:17,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349517155] [2024-12-02 13:01:17,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349517155] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:01:17,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660837168] [2024-12-02 13:01:17,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:01:17,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:01:17,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:01:17,492 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:01:17,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 13:01:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:01:23,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 5384 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 13:01:23,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:01:24,157 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 [2024-12-02 13:01:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-12-02 13:01:25,582 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:01:25,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660837168] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:01:25,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:01:25,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2024-12-02 13:01:25,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720468302] [2024-12-02 13:01:25,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:01:25,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 13:01:25,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:01:25,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 13:01:25,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:01:25,585 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) [2024-12-02 13:01:35,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:01:35,642 INFO L93 Difference]: Finished difference Result 700 states and 1011 transitions. [2024-12-02 13:01:35,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 13:01:35,643 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 [2024-12-02 13:01:35,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:01:35,649 INFO L225 Difference]: With dead ends: 700 [2024-12-02 13:01:35,649 INFO L226 Difference]: Without dead ends: 404 [2024-12-02 13:01:35,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:01:35,651 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 329 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s 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, 9.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:01:35,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 2876 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-12-02 13:01:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-12-02 13:01:35,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 400. [2024-12-02 13:01:35,678 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) [2024-12-02 13:01:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 565 transitions. [2024-12-02 13:01:35,681 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 565 transitions. Word has length 315 [2024-12-02 13:01:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:01:35,681 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 565 transitions. [2024-12-02 13:01:35,682 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) [2024-12-02 13:01:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 565 transitions. [2024-12-02 13:01:35,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-12-02 13:01:35,683 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:01:35,683 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] [2024-12-02 13:01:35,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 13:01:35,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 13:01:35,884 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:01:35,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:01:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1147945579, now seen corresponding path program 1 times [2024-12-02 13:01:35,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:01:35,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974701790] [2024-12-02 13:01:35,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:01:35,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:01:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:01:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2024-12-02 13:01:40,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:01:40,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974701790] [2024-12-02 13:01:40,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974701790] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:01:40,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359098798] [2024-12-02 13:01:40,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:01:40,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:01:40,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:01:40,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:01:40,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 13:01:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:01:47,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 5374 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:01:47,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:01:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 418 proven. 166 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-12-02 13:01:49,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:01:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2024-12-02 13:01:52,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359098798] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:01:52,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:01:52,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-12-02 13:01:52,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494721075] [2024-12-02 13:01:52,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:01:52,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:01:52,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:01:52,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:01:52,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:01:52,693 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) [2024-12-02 13:01:56,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:01:56,762 INFO L93 Difference]: Finished difference Result 754 states and 1082 transitions. [2024-12-02 13:01:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:01:56,763 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 [2024-12-02 13:01:56,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:01:56,767 INFO L225 Difference]: With dead ends: 754 [2024-12-02 13:01:56,767 INFO L226 Difference]: Without dead ends: 410 [2024-12-02 13:01:56,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 623 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:01:56,769 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 395 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:01:56,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 2436 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 13:01:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-12-02 13:01:56,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2024-12-02 13:01:56,796 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) [2024-12-02 13:01:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 572 transitions. [2024-12-02 13:01:56,799 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 572 transitions. Word has length 315 [2024-12-02 13:01:56,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:01:56,799 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 572 transitions. [2024-12-02 13:01:56,799 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) [2024-12-02 13:01:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 572 transitions. [2024-12-02 13:01:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-12-02 13:01:56,801 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:01:56,802 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] [2024-12-02 13:01:56,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 13:01:57,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:01:57,002 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:01:57,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:01:57,002 INFO L85 PathProgramCache]: Analyzing trace with hash 331283013, now seen corresponding path program 1 times [2024-12-02 13:01:57,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:01:57,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123116101] [2024-12-02 13:01:57,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:01:57,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:02:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:02:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 46 proven. 12 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2024-12-02 13:02:06,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:02:06,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123116101] [2024-12-02 13:02:06,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123116101] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:02:06,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710349116] [2024-12-02 13:02:06,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:02:06,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:02:06,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:02:06,071 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:02:06,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 13:02:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:02:12,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 5512 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-12-02 13:02:12,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:02:12,893 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 [2024-12-02 13:02:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-12-02 13:02:18,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:02:18,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710349116] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:02:18,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:02:18,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 17 [2024-12-02 13:02:18,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321124755] [2024-12-02 13:02:18,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:02:18,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:02:18,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:02:18,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:02:18,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:02:18,260 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) [2024-12-02 13:02:29,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:02:29,200 INFO L93 Difference]: Finished difference Result 653 states and 941 transitions. [2024-12-02 13:02:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 13:02:29,201 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 [2024-12-02 13:02:29,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:02:29,205 INFO L225 Difference]: With dead ends: 653 [2024-12-02 13:02:29,205 INFO L226 Difference]: Without dead ends: 414 [2024-12-02 13:02:29,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 344 SyntacticMatches, 18 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2024-12-02 13:02:29,207 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 327 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s 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, 10.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:02:29,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 2635 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2024-12-02 13:02:29,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-12-02 13:02:29,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 410. [2024-12-02 13:02:29,236 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) [2024-12-02 13:02:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 567 transitions. [2024-12-02 13:02:29,238 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 567 transitions. Word has length 365 [2024-12-02 13:02:29,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:02:29,239 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 567 transitions. [2024-12-02 13:02:29,239 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) [2024-12-02 13:02:29,239 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 567 transitions. [2024-12-02 13:02:29,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-12-02 13:02:29,241 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:02:29,242 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] [2024-12-02 13:02:29,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 13:02:29,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-12-02 13:02:29,442 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:02:29,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:02:29,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1660307725, now seen corresponding path program 1 times [2024-12-02 13:02:29,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:02:29,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900113680] [2024-12-02 13:02:29,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:02:29,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:02:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:02:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-12-02 13:02:34,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:02:34,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900113680] [2024-12-02 13:02:34,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900113680] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:02:34,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722314584] [2024-12-02 13:02:34,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:02:34,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:02:34,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:02:34,930 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:02:34,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 13:02:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:02:41,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 5438 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 13:02:41,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:02:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 228 proven. 389 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-12-02 13:02:43,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:02:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-12-02 13:02:48,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722314584] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:02:48,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:02:48,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-12-02 13:02:48,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190374385] [2024-12-02 13:02:48,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:02:48,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 13:02:48,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:02:48,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 13:02:48,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:02:48,318 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) [2024-12-02 13:02:51,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:02:51,982 INFO L93 Difference]: Finished difference Result 649 states and 917 transitions. [2024-12-02 13:02:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:02:51,983 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 [2024-12-02 13:02:51,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:02:51,986 INFO L225 Difference]: With dead ends: 649 [2024-12-02 13:02:51,986 INFO L226 Difference]: Without dead ends: 410 [2024-12-02 13:02:51,987 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 [2024-12-02 13:02:51,988 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 471 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:02:51,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 2680 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 13:02:51,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-12-02 13:02:52,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2024-12-02 13:02:52,015 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) [2024-12-02 13:02:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 562 transitions. [2024-12-02 13:02:52,017 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 562 transitions. Word has length 351 [2024-12-02 13:02:52,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:02:52,018 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 562 transitions. [2024-12-02 13:02:52,018 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) [2024-12-02 13:02:52,018 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 562 transitions. [2024-12-02 13:02:52,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-12-02 13:02:52,021 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:02:52,021 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] [2024-12-02 13:02:52,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 13:02:52,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:02:52,221 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:02:52,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:02:52,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2069298937, now seen corresponding path program 2 times [2024-12-02 13:02:52,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:02:52,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777397025] [2024-12-02 13:02:52,222 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:02:52,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:02:56,772 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 13:02:56,772 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:03:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 1031 trivial. 0 not checked. [2024-12-02 13:03:02,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:03:02,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777397025] [2024-12-02 13:03:02,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777397025] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:03:02,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:03:02,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 13:03:02,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821981743] [2024-12-02 13:03:02,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:03:02,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:03:02,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:03:02,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:03:02,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:03:02,586 INFO L87 Difference]: Start difference. First operand 410 states and 562 transitions. Second operand has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 9 states have internal predecessors, (77), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 4 states have call predecessors, (38), 1 states have call successors, (38) [2024-12-02 13:03:03,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:03:03,591 INFO L93 Difference]: Finished difference Result 436 states and 616 transitions. [2024-12-02 13:03:03,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 13:03:03,592 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 9 states have internal predecessors, (77), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 4 states have call predecessors, (38), 1 states have call successors, (38) Word has length 391 [2024-12-02 13:03:03,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:03:03,595 INFO L225 Difference]: With dead ends: 436 [2024-12-02 13:03:03,595 INFO L226 Difference]: Without dead ends: 434 [2024-12-02 13:03:03,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:03:03,597 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 3 mSDsluCounter, 4446 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:03:03,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4853 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 13:03:03,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-12-02 13:03:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 421. [2024-12-02 13:03:03,645 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) [2024-12-02 13:03:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 595 transitions. [2024-12-02 13:03:03,649 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 595 transitions. Word has length 391 [2024-12-02 13:03:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:03:03,649 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 595 transitions. [2024-12-02 13:03:03,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 9 states have internal predecessors, (77), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 4 states have call predecessors, (38), 1 states have call successors, (38) [2024-12-02 13:03:03,650 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 595 transitions. [2024-12-02 13:03:03,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2024-12-02 13:03:03,653 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:03:03,653 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] [2024-12-02 13:03:03,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:03:03,653 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:03:03,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:03:03,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1772363284, now seen corresponding path program 1 times [2024-12-02 13:03:03,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:03:03,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038227375] [2024-12-02 13:03:03,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:03,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:03:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:03:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 13 proven. 44 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2024-12-02 13:03:14,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:03:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038227375] [2024-12-02 13:03:14,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038227375] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:03:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167845304] [2024-12-02 13:03:14,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:14,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:03:14,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:03:14,739 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:03:14,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 13:03:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:03:21,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 5628 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-12-02 13:03:21,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:03:21,835 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 [2024-12-02 13:03:21,849 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 [2024-12-02 13:03:21,863 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 [2024-12-02 13:03:22,201 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 58 treesize of output 1 [2024-12-02 13:03:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 336 proven. 29 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2024-12-02 13:03:33,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:03:37,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167845304] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:03:37,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 13:03:37,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 35 [2024-12-02 13:03:37,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086195714] [2024-12-02 13:03:37,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 13:03:37,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 13:03:37,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:03:37,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 13:03:37,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1370, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 13:03:37,507 INFO L87 Difference]: Start difference. First operand 421 states and 595 transitions. Second operand has 35 states, 29 states have (on average 5.103448275862069) internal successors, (148), 32 states have internal predecessors, (148), 13 states have call successors, (76), 4 states have call predecessors, (76), 12 states have return successors, (77), 13 states have call predecessors, (77), 13 states have call successors, (77) [2024-12-02 13:05:02,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:05:02,923 INFO L93 Difference]: Finished difference Result 1043 states and 1617 transitions. [2024-12-02 13:05:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-12-02 13:05:02,923 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 29 states have (on average 5.103448275862069) internal successors, (148), 32 states have internal predecessors, (148), 13 states have call successors, (76), 4 states have call predecessors, (76), 12 states have return successors, (77), 13 states have call predecessors, (77), 13 states have call successors, (77) Word has length 393 [2024-12-02 13:05:02,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:05:02,928 INFO L225 Difference]: With dead ends: 1043 [2024-12-02 13:05:02,928 INFO L226 Difference]: Without dead ends: 775 [2024-12-02 13:05:02,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 388 SyntacticMatches, 10 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=557, Invalid=6415, Unknown=0, NotChecked=0, Total=6972 [2024-12-02 13:05:02,930 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 1293 mSDsluCounter, 2060 mSDsCounter, 0 mSdLazyCounter, 11411 mSolverCounterSat, 1130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 12541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1130 IncrementalHoareTripleChecker+Valid, 11411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:05:02,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 2192 Invalid, 12541 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1130 Valid, 11411 Invalid, 0 Unknown, 0 Unchecked, 74.2s Time] [2024-12-02 13:05:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2024-12-02 13:05:02,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 738. [2024-12-02 13:05:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 473 states have (on average 1.2114164904862579) internal successors, (573), 485 states have internal predecessors, (573), 196 states have call successors, (196), 56 states have call predecessors, (196), 68 states have return successors, (341), 196 states have call predecessors, (341), 194 states have call successors, (341) [2024-12-02 13:05:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1110 transitions. [2024-12-02 13:05:02,991 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1110 transitions. Word has length 393 [2024-12-02 13:05:02,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:05:02,991 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1110 transitions. [2024-12-02 13:05:02,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 29 states have (on average 5.103448275862069) internal successors, (148), 32 states have internal predecessors, (148), 13 states have call successors, (76), 4 states have call predecessors, (76), 12 states have return successors, (77), 13 states have call predecessors, (77), 13 states have call successors, (77) [2024-12-02 13:05:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1110 transitions. [2024-12-02 13:05:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-12-02 13:05:02,994 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:05:02,994 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:05:03,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 13:05:03,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:03,195 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:05:03,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:05:03,195 INFO L85 PathProgramCache]: Analyzing trace with hash 606961654, now seen corresponding path program 1 times [2024-12-02 13:05:03,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:05:03,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390596454] [2024-12-02 13:05:03,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:03,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:05:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 10 proven. 50 refuted. 0 times theorem prover too weak. 963 trivial. 0 not checked. [2024-12-02 13:05:09,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:05:09,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390596454] [2024-12-02 13:05:09,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390596454] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:05:09,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753855742] [2024-12-02 13:05:09,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:09,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:09,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:05:09,036 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:05:09,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 13:05:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:15,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 5556 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 13:05:15,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:05:16,350 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 [2024-12-02 13:05:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 530 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2024-12-02 13:05:18,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:05:18,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753855742] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:05:18,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:05:18,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2024-12-02 13:05:18,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899638561] [2024-12-02 13:05:18,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:05:18,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:05:18,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:05:18,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:05:18,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-12-02 13:05:18,242 INFO L87 Difference]: Start difference. First operand 738 states and 1110 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) [2024-12-02 13:05:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:05:29,276 INFO L93 Difference]: Finished difference Result 1383 states and 2136 transitions. [2024-12-02 13:05:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 13:05:29,276 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 378 [2024-12-02 13:05:29,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:05:29,281 INFO L225 Difference]: With dead ends: 1383 [2024-12-02 13:05:29,281 INFO L226 Difference]: Without dead ends: 753 [2024-12-02 13:05:29,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-12-02 13:05:29,283 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 411 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:05:29,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 2894 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2024-12-02 13:05:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-12-02 13:05:29,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 738. [2024-12-02 13:05:29,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 473 states have (on average 1.2114164904862579) internal successors, (573), 485 states have internal predecessors, (573), 196 states have call successors, (196), 56 states have call predecessors, (196), 68 states have return successors, (336), 196 states have call predecessors, (336), 194 states have call successors, (336) [2024-12-02 13:05:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1105 transitions. [2024-12-02 13:05:29,392 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1105 transitions. Word has length 378 [2024-12-02 13:05:29,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:05:29,393 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1105 transitions. [2024-12-02 13:05:29,393 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) [2024-12-02 13:05:29,393 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1105 transitions. [2024-12-02 13:05:29,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-12-02 13:05:29,397 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:05:29,397 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 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, 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, 1, 1] [2024-12-02 13:05:29,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 13:05:29,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:29,598 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:05:29,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:05:29,598 INFO L85 PathProgramCache]: Analyzing trace with hash -603039214, now seen corresponding path program 2 times [2024-12-02 13:05:29,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:05:29,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693887849] [2024-12-02 13:05:29,598 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:05:29,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:05:33,962 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 13:05:33,963 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:05:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2024-12-02 13:05:39,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:05:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693887849] [2024-12-02 13:05:39,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693887849] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:05:39,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:05:39,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 13:05:39,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863058878] [2024-12-02 13:05:39,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:05:39,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 13:05:39,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:05:39,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 13:05:39,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:05:39,191 INFO L87 Difference]: Start difference. First operand 738 states and 1105 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) [2024-12-02 13:05:41,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:05:41,457 INFO L93 Difference]: Finished difference Result 795 states and 1227 transitions. [2024-12-02 13:05:41,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 13:05:41,458 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 392 [2024-12-02 13:05:41,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:05:41,462 INFO L225 Difference]: With dead ends: 795 [2024-12-02 13:05:41,462 INFO L226 Difference]: Without dead ends: 793 [2024-12-02 13:05:41,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:05:41,463 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 8 mSDsluCounter, 4781 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5186 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:05:41,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5186 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 13:05:41,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-12-02 13:05:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 760. [2024-12-02 13:05:41,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 489 states have (on average 1.2044989775051125) internal successors, (589), 503 states have internal predecessors, (589), 196 states have call successors, (196), 56 states have call predecessors, (196), 74 states have return successors, (388), 200 states have call predecessors, (388), 194 states have call successors, (388) [2024-12-02 13:05:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1173 transitions. [2024-12-02 13:05:41,528 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1173 transitions. Word has length 392 [2024-12-02 13:05:41,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:05:41,529 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 1173 transitions. [2024-12-02 13:05:41,529 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) [2024-12-02 13:05:41,529 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1173 transitions. [2024-12-02 13:05:41,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-12-02 13:05:41,532 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:05:41,532 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 13:05:41,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 13:05:41,532 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:05:41,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:05:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash -546471266, now seen corresponding path program 1 times [2024-12-02 13:05:41,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:05:41,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223654996] [2024-12-02 13:05:41,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:41,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:05:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:47,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2024-12-02 13:05:47,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:05:47,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223654996] [2024-12-02 13:05:47,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223654996] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:05:47,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972669806] [2024-12-02 13:05:47,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:47,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:47,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:05:47,719 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:05:47,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 13:05:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:54,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 5660 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 13:05:54,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:05:55,352 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 [2024-12-02 13:06:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 713 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2024-12-02 13:06:01,919 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:06:01,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972669806] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:06:01,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:06:01,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2024-12-02 13:06:01,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239114026] [2024-12-02 13:06:01,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:06:01,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 13:06:01,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:06:01,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 13:06:01,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:06:01,921 INFO L87 Difference]: Start difference. First operand 760 states and 1173 transitions. Second operand has 14 states, 13 states have (on average 11.846153846153847) internal successors, (154), 13 states have internal predecessors, (154), 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) [2024-12-02 13:06:14,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:06:14,124 INFO L93 Difference]: Finished difference Result 1289 states and 2011 transitions. [2024-12-02 13:06:14,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 13:06:14,125 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 11.846153846153847) internal successors, (154), 13 states have internal predecessors, (154), 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 405 [2024-12-02 13:06:14,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:06:14,130 INFO L225 Difference]: With dead ends: 1289 [2024-12-02 13:06:14,130 INFO L226 Difference]: Without dead ends: 769 [2024-12-02 13:06:14,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 375 SyntacticMatches, 19 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2024-12-02 13:06:14,132 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 309 mSDsluCounter, 3113 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:06:14,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 3536 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2024-12-02 13:06:14,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-12-02 13:06:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 754. [2024-12-02 13:06:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 485 states have (on average 1.2041237113402061) internal successors, (584), 498 states have internal predecessors, (584), 196 states have call successors, (196), 56 states have call predecessors, (196), 72 states have return successors, (373), 199 states have call predecessors, (373), 194 states have call successors, (373) [2024-12-02 13:06:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1153 transitions. [2024-12-02 13:06:14,251 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1153 transitions. Word has length 405 [2024-12-02 13:06:14,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:06:14,251 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1153 transitions. [2024-12-02 13:06:14,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 11.846153846153847) internal successors, (154), 13 states have internal predecessors, (154), 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) [2024-12-02 13:06:14,252 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1153 transitions. [2024-12-02 13:06:14,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-12-02 13:06:14,256 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:06:14,256 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, 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, 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] [2024-12-02 13:06:14,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 13:06:14,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 13:06:14,456 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:06:14,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:06:14,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1699494251, now seen corresponding path program 1 times [2024-12-02 13:06:14,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:06:14,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135108548] [2024-12-02 13:06:14,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:06:14,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:06:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:06:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 34 proven. 53 refuted. 0 times theorem prover too weak. 1114 trivial. 0 not checked. [2024-12-02 13:06:22,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:06:22,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135108548] [2024-12-02 13:06:22,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135108548] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:06:22,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878904516] [2024-12-02 13:06:22,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:06:22,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:06:22,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:06:22,786 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:06:22,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 13:06:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:06:29,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 5710 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-12-02 13:06:29,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:06:31,306 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 [2024-12-02 13:06:31,322 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 [2024-12-02 13:06:31,336 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 [2024-12-02 13:06:34,647 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 [2024-12-02 13:06:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 799 proven. 17 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-12-02 13:06:40,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:06:44,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878904516] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:06:44,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 13:06:44,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18] total 27 [2024-12-02 13:06:44,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857605409] [2024-12-02 13:06:44,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 13:06:44,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 13:06:44,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:06:44,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 13:06:44,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2024-12-02 13:06:44,638 INFO L87 Difference]: Start difference. First operand 754 states and 1153 transitions. Second operand has 27 states, 23 states have (on average 8.130434782608695) internal successors, (187), 27 states have internal predecessors, (187), 12 states have call successors, (73), 3 states have call predecessors, (73), 10 states have return successors, (74), 10 states have call predecessors, (74), 12 states have call successors, (74) [2024-12-02 13:07:22,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:22,970 INFO L93 Difference]: Finished difference Result 1930 states and 3021 transitions. [2024-12-02 13:07:22,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-12-02 13:07:22,971 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 8.130434782608695) internal successors, (187), 27 states have internal predecessors, (187), 12 states have call successors, (73), 3 states have call predecessors, (73), 10 states have return successors, (74), 10 states have call predecessors, (74), 12 states have call successors, (74) Word has length 424 [2024-12-02 13:07:22,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:22,977 INFO L225 Difference]: With dead ends: 1930 [2024-12-02 13:07:22,977 INFO L226 Difference]: Without dead ends: 1267 [2024-12-02 13:07:22,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 509 SyntacticMatches, 16 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=358, Invalid=3802, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 13:07:22,980 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 568 mSDsluCounter, 6857 mSDsCounter, 0 mSdLazyCounter, 4669 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 7286 SdHoareTripleChecker+Invalid, 4964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 4669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:22,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 7286 Invalid, 4964 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [295 Valid, 4669 Invalid, 0 Unknown, 0 Unchecked, 30.6s Time] [2024-12-02 13:07:22,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2024-12-02 13:07:23,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1236. [2024-12-02 13:07:23,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 802 states have (on average 1.201995012468828) internal successors, (964), 828 states have internal predecessors, (964), 312 states have call successors, (312), 89 states have call predecessors, (312), 121 states have return successors, (613), 318 states have call predecessors, (613), 309 states have call successors, (613) [2024-12-02 13:07:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1889 transitions. [2024-12-02 13:07:23,106 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1889 transitions. Word has length 424 [2024-12-02 13:07:23,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:23,107 INFO L471 AbstractCegarLoop]: Abstraction has 1236 states and 1889 transitions. [2024-12-02 13:07:23,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 8.130434782608695) internal successors, (187), 27 states have internal predecessors, (187), 12 states have call successors, (73), 3 states have call predecessors, (73), 10 states have return successors, (74), 10 states have call predecessors, (74), 12 states have call successors, (74) [2024-12-02 13:07:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1889 transitions. [2024-12-02 13:07:23,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-12-02 13:07:23,112 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:23,112 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 13:07:23,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 13:07:23,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 13:07:23,312 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:23,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:23,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1056516144, now seen corresponding path program 1 times [2024-12-02 13:07:23,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:23,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503893313] [2024-12-02 13:07:23,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:23,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 1094 trivial. 0 not checked. [2024-12-02 13:07:28,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:28,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503893313] [2024-12-02 13:07:28,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503893313] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:07:28,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525793764] [2024-12-02 13:07:28,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:28,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:07:28,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:07:28,504 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:07:28,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 13:07:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:35,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 5660 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 13:07:35,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:07:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2024-12-02 13:07:36,495 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:07:36,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525793764] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:36,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:07:36,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-12-02 13:07:36,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839810290] [2024-12-02 13:07:36,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:36,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:07:36,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:36,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:07:36,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:07:36,497 INFO L87 Difference]: Start difference. First operand 1236 states and 1889 transitions. Second operand has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 7 states have internal predecessors, (103), 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) [2024-12-02 13:07:38,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:38,100 INFO L93 Difference]: Finished difference Result 2176 states and 3386 transitions. [2024-12-02 13:07:38,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:07:38,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 7 states have internal predecessors, (103), 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 409 [2024-12-02 13:07:38,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:38,108 INFO L225 Difference]: With dead ends: 2176 [2024-12-02 13:07:38,108 INFO L226 Difference]: Without dead ends: 1230 [2024-12-02 13:07:38,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:07:38,113 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 468 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:38,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1322 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 13:07:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2024-12-02 13:07:38,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1212. [2024-12-02 13:07:38,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 784 states have (on average 1.1989795918367347) internal successors, (940), 804 states have internal predecessors, (940), 312 states have call successors, (312), 89 states have call predecessors, (312), 115 states have return successors, (543), 318 states have call predecessors, (543), 309 states have call successors, (543) [2024-12-02 13:07:38,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1795 transitions. [2024-12-02 13:07:38,322 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1795 transitions. Word has length 409 [2024-12-02 13:07:38,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:38,323 INFO L471 AbstractCegarLoop]: Abstraction has 1212 states and 1795 transitions. [2024-12-02 13:07:38,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 7 states have internal predecessors, (103), 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) [2024-12-02 13:07:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1795 transitions. [2024-12-02 13:07:38,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2024-12-02 13:07:38,327 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:38,328 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 13:07:38,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 13:07:38,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 13:07:38,528 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:38,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:38,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1703053874, now seen corresponding path program 1 times [2024-12-02 13:07:38,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:38,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184278517] [2024-12-02 13:07:38,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:38,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 3 proven. 82 refuted. 0 times theorem prover too weak. 1319 trivial. 0 not checked. [2024-12-02 13:07:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184278517] [2024-12-02 13:07:49,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184278517] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:07:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887625750] [2024-12-02 13:07:49,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:49,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:07:49,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:07:49,303 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:07:49,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 13:07:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:56,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 5828 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-12-02 13:07:56,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:07:57,070 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 [2024-12-02 13:07:57,082 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 [2024-12-02 13:07:57,681 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 58 treesize of output 1 [2024-12-02 13:08:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 763 proven. 39 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2024-12-02 13:08:04,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:08:08,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887625750] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:08,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 13:08:08,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 22] total 27 [2024-12-02 13:08:08,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324795525] [2024-12-02 13:08:08,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 13:08:08,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 13:08:08,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:08,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 13:08:08,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2024-12-02 13:08:08,206 INFO L87 Difference]: Start difference. First operand 1212 states and 1795 transitions. Second operand has 27 states, 22 states have (on average 8.0) internal successors, (176), 25 states have internal predecessors, (176), 11 states have call successors, (76), 3 states have call predecessors, (76), 11 states have return successors, (79), 11 states have call predecessors, (79), 11 states have call successors, (79) [2024-12-02 13:08:38,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:38,099 INFO L93 Difference]: Finished difference Result 2226 states and 3307 transitions. [2024-12-02 13:08:38,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-12-02 13:08:38,099 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 8.0) internal successors, (176), 25 states have internal predecessors, (176), 11 states have call successors, (76), 3 states have call predecessors, (76), 11 states have return successors, (79), 11 states have call predecessors, (79), 11 states have call successors, (79) Word has length 452 [2024-12-02 13:08:38,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:38,105 INFO L225 Difference]: With dead ends: 2226 [2024-12-02 13:08:38,105 INFO L226 Difference]: Without dead ends: 997 [2024-12-02 13:08:38,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 508 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=210, Invalid=2240, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 13:08:38,109 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 563 mSDsluCounter, 7177 mSDsCounter, 0 mSdLazyCounter, 4037 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 7601 SdHoareTripleChecker+Invalid, 4225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 4037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:38,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 7601 Invalid, 4225 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [188 Valid, 4037 Invalid, 0 Unknown, 0 Unchecked, 25.9s Time] [2024-12-02 13:08:38,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2024-12-02 13:08:38,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 939. [2024-12-02 13:08:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 605 states have (on average 1.1917355371900826) internal successors, (721), 617 states have internal predecessors, (721), 247 states have call successors, (247), 72 states have call predecessors, (247), 86 states have return successors, (427), 249 states have call predecessors, (427), 245 states have call successors, (427) [2024-12-02 13:08:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1395 transitions. [2024-12-02 13:08:38,206 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1395 transitions. Word has length 452 [2024-12-02 13:08:38,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:38,207 INFO L471 AbstractCegarLoop]: Abstraction has 939 states and 1395 transitions. [2024-12-02 13:08:38,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 8.0) internal successors, (176), 25 states have internal predecessors, (176), 11 states have call successors, (76), 3 states have call predecessors, (76), 11 states have return successors, (79), 11 states have call predecessors, (79), 11 states have call successors, (79) [2024-12-02 13:08:38,207 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1395 transitions. [2024-12-02 13:08:38,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-12-02 13:08:38,210 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:38,210 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, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:38,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 13:08:38,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 13:08:38,410 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:38,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -680152997, now seen corresponding path program 2 times [2024-12-02 13:08:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389219676] [2024-12-02 13:08:38,411 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:08:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:52,235 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:08:52,235 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:08:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 1403 trivial. 0 not checked. [2024-12-02 13:08:53,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:53,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389219676] [2024-12-02 13:08:53,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389219676] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:53,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273977967] [2024-12-02 13:08:53,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:08:53,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:08:53,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:08:53,724 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:08:53,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282717c2-af14-4b1d-a433-bd35ac6adf10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process