./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.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_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB --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 5218740bc18d67a03fb6ada79d678262e4837698e28e927d44dbd2d60e2f84aa --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:28:55,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:28:56,030 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 20:28:56,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:28:56,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:28:56,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:28:56,076 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:28:56,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:28:56,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:28:56,077 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:28:56,077 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:28:56,078 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:28:56,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:28:56,079 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:28:56,079 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:28:56,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:28:56,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:28:56,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:28:56,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:28:56,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:28:56,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:28:56,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:28:56,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:28:56,081 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:28:56,081 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:28:56,081 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:28:56,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:28:56,081 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:28:56,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:28:56,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:28:56,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:28:56,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:28:56,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:28:56,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:28:56,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:28:56,082 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:28:56,082 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:28:56,082 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:28:56,082 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:28:56,082 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:28:56,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:28:56,083 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:28:56,083 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:28:56,083 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:28:56,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:28:56,083 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_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 5218740bc18d67a03fb6ada79d678262e4837698e28e927d44dbd2d60e2f84aa [2024-11-27 20:28:56,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:28:56,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:28:56,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:28:56,380 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:28:56,381 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:28:56,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.i [2024-11-27 20:28:59,422 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/data/7ecd09b34/ace07ffcab0c46cba0a19328cc4f3991/FLAG1830afc28 [2024-11-27 20:29:00,189 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:29:00,194 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.i [2024-11-27 20:29:00,262 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/data/7ecd09b34/ace07ffcab0c46cba0a19328cc4f3991/FLAG1830afc28 [2024-11-27 20:29:00,290 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/data/7ecd09b34/ace07ffcab0c46cba0a19328cc4f3991 [2024-11-27 20:29:00,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:29:00,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:29:00,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:29:00,298 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:29:00,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:29:00,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:29:00" (1/1) ... [2024-11-27 20:29:00,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff635a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:00, skipping insertion in model container [2024-11-27 20:29:00,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:29:00" (1/1) ... [2024-11-27 20:29:00,419 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:29:00,732 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_a95b4e17-0953-4c44-8661-9519338da455/sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.i[4500,4513] [2024-11-27 20:29:00,742 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_a95b4e17-0953-4c44-8661-9519338da455/sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.i[4560,4573] [2024-11-27 20:29:01,723 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:01,724 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:01,727 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:01,728 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:01,730 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:01,744 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:01,745 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:01,747 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:01,748 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:01,750 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:01,751 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:01,752 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:01,752 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,375 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,382 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:29:02,415 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:29:02,430 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_a95b4e17-0953-4c44-8661-9519338da455/sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.i[4500,4513] [2024-11-27 20:29:02,430 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_a95b4e17-0953-4c44-8661-9519338da455/sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.i[4560,4573] [2024-11-27 20:29:02,567 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,571 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,572 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,572 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,573 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,590 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,594 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,596 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,599 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,601 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,601 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,602 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,602 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,713 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,724 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:29:02,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:29:02,951 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:29:02,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02 WrapperNode [2024-11-27 20:29:02,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:29:02,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:29:02,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:29:02,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:29:02,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,084 INFO L138 Inliner]: procedures = 670, calls = 1248, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 162 [2024-11-27 20:29:03,085 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:29:03,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:29:03,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:29:03,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:29:03,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,107 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,139 INFO L175 MemorySlicer]: Split 45 memory accesses to 5 slices as follows [2, 4, 28, 5, 6]. 62 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 6, 5, 0]. The 7 writes are split as follows [0, 0, 5, 0, 2]. [2024-11-27 20:29:03,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,173 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,174 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,187 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:29:03,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:29:03,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:29:03,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:29:03,196 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (1/1) ... [2024-11-27 20:29:03,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:29:03,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:03,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:29:03,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:29:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:29:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-27 20:29:03,268 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-27 20:29:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:29:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:29:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 20:29:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 20:29:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-27 20:29:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-27 20:29:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-27 20:29:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 20:29:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 20:29:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:29:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:29:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 20:29:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 20:29:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 20:29:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-27 20:29:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-27 20:29:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:29:03,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:29:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-27 20:29:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-27 20:29:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-27 20:29:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-27 20:29:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-27 20:29:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-27 20:29:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-27 20:29:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:29:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-27 20:29:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-27 20:29:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-27 20:29:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-27 20:29:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:29:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:29:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 20:29:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 20:29:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 20:29:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:29:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:29:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:29:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 20:29:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 20:29:03,592 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:29:03,596 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:29:04,133 INFO L? ?]: Removed 96 outVars from TransFormulas that were not future-live. [2024-11-27 20:29:04,133 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:29:04,147 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:29:04,149 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 20:29:04,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:29:04 BoogieIcfgContainer [2024-11-27 20:29:04,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:29:04,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:29:04,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:29:04,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:29:04,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:29:00" (1/3) ... [2024-11-27 20:29:04,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254edce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:29:04, skipping insertion in model container [2024-11-27 20:29:04,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:02" (2/3) ... [2024-11-27 20:29:04,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254edce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:29:04, skipping insertion in model container [2024-11-27 20:29:04,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:29:04" (3/3) ... [2024-11-27 20:29:04,165 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_init_static_harness.i [2024-11-27 20:29:04,186 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:29:04,187 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_init_static_harness.i that has 11 procedures, 113 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 20:29:04,251 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:29:04,266 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;@26e09e1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:29:04,267 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:29:04,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 68 states have (on average 1.161764705882353) internal successors, (79), 69 states have internal predecessors, (79), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-27 20:29:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-27 20:29:04,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:04,284 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2024-11-27 20:29:04,285 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:04,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:04,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1380798734, now seen corresponding path program 1 times [2024-11-27 20:29:04,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:04,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99206203] [2024-11-27 20:29:04,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:04,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 20:29:05,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99206203] [2024-11-27 20:29:05,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99206203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:05,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:05,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:29:05,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043354340] [2024-11-27 20:29:05,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:05,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:29:05,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:05,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:29:05,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:29:05,656 INFO L87 Difference]: Start difference. First operand has 113 states, 68 states have (on average 1.161764705882353) internal successors, (79), 69 states have internal predecessors, (79), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:29:05,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:05,911 INFO L93 Difference]: Finished difference Result 221 states and 305 transitions. [2024-11-27 20:29:05,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:29:05,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 99 [2024-11-27 20:29:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:05,921 INFO L225 Difference]: With dead ends: 221 [2024-11-27 20:29:05,921 INFO L226 Difference]: Without dead ends: 105 [2024-11-27 20:29:05,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:29:05,928 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 31 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:05,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 563 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:29:05,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-27 20:29:05,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-27 20:29:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 63 states have internal predecessors, (69), 33 states have call successors, (33), 10 states have call predecessors, (33), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-27 20:29:05,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2024-11-27 20:29:05,988 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 99 [2024-11-27 20:29:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:05,990 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2024-11-27 20:29:05,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:29:05,991 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2024-11-27 20:29:05,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-27 20:29:05,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:05,995 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:05,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:29:05,996 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:05,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:05,996 INFO L85 PathProgramCache]: Analyzing trace with hash 254287568, now seen corresponding path program 1 times [2024-11-27 20:29:05,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:05,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848134356] [2024-11-27 20:29:05,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:05,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-27 20:29:10,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:10,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848134356] [2024-11-27 20:29:10,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848134356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:10,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:10,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 20:29:10,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46221565] [2024-11-27 20:29:10,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:10,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 20:29:10,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:10,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 20:29:10,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:29:10,270 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-27 20:29:12,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:12,436 INFO L93 Difference]: Finished difference Result 193 states and 242 transitions. [2024-11-27 20:29:12,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 20:29:12,437 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 114 [2024-11-27 20:29:12,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:12,441 INFO L225 Difference]: With dead ends: 193 [2024-11-27 20:29:12,442 INFO L226 Difference]: Without dead ends: 126 [2024-11-27 20:29:12,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2024-11-27 20:29:12,444 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 113 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:12,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 609 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 20:29:12,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-27 20:29:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 108. [2024-11-27 20:29:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 64 states have (on average 1.109375) internal successors, (71), 66 states have internal predecessors, (71), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2024-11-27 20:29:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 136 transitions. [2024-11-27 20:29:12,489 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 136 transitions. Word has length 114 [2024-11-27 20:29:12,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:12,490 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 136 transitions. [2024-11-27 20:29:12,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-27 20:29:12,493 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 136 transitions. [2024-11-27 20:29:12,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 20:29:12,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:12,499 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:12,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:29:12,499 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:12,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:12,500 INFO L85 PathProgramCache]: Analyzing trace with hash -303983254, now seen corresponding path program 1 times [2024-11-27 20:29:12,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:12,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500272231] [2024-11-27 20:29:12,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:12,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:29:13,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929292296] [2024-11-27 20:29:13,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:13,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:13,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:13,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:13,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:29:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:13,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-11-27 20:29:13,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:13,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-27 20:29:13,928 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-27 20:29:13,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-27 20:29:14,867 WARN L873 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1))) is different from true [2024-11-27 20:29:14,948 INFO L349 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2024-11-27 20:29:14,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 30 [2024-11-27 20:29:15,133 INFO L349 Elim1Store]: treesize reduction 84, result has 25.0 percent of original size [2024-11-27 20:29:15,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 29 treesize of output 40 [2024-11-27 20:29:16,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:29:16,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2024-11-27 20:29:21,296 INFO L349 Elim1Store]: treesize reduction 218, result has 30.4 percent of original size [2024-11-27 20:29:21,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 203 treesize of output 359 [2024-11-27 20:29:21,923 INFO L349 Elim1Store]: treesize reduction 36, result has 78.7 percent of original size [2024-11-27 20:29:21,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 164 treesize of output 282 [2024-11-27 20:29:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 30 proven. 57 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-27 20:29:22,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:24,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:24,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500272231] [2024-11-27 20:29:24,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:29:24,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929292296] [2024-11-27 20:29:24,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929292296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:24,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:29:24,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2024-11-27 20:29:24,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989272810] [2024-11-27 20:29:24,585 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:24,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 20:29:24,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:24,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 20:29:24,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=967, Unknown=1, NotChecked=62, Total=1122 [2024-11-27 20:29:24,588 INFO L87 Difference]: Start difference. First operand 108 states and 136 transitions. Second operand has 30 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 12 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 10 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-27 20:29:33,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:33,446 INFO L93 Difference]: Finished difference Result 143 states and 177 transitions. [2024-11-27 20:29:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 20:29:33,447 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 12 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 10 states have call predecessors, (19), 11 states have call successors, (19) Word has length 116 [2024-11-27 20:29:33,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:33,449 INFO L225 Difference]: With dead ends: 143 [2024-11-27 20:29:33,449 INFO L226 Difference]: Without dead ends: 141 [2024-11-27 20:29:33,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 76 SyntacticMatches, 15 SemanticMatches, 60 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=353, Invalid=3309, Unknown=2, NotChecked=118, Total=3782 [2024-11-27 20:29:33,457 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 237 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 162 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:33,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 813 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2027 Invalid, 4 Unknown, 167 Unchecked, 4.8s Time] [2024-11-27 20:29:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-27 20:29:33,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 129. [2024-11-27 20:29:33,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 80 states have (on average 1.125) internal successors, (90), 83 states have internal predecessors, (90), 34 states have call successors, (34), 12 states have call predecessors, (34), 14 states have return successors, (38), 33 states have call predecessors, (38), 32 states have call successors, (38) [2024-11-27 20:29:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 162 transitions. [2024-11-27 20:29:33,486 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 162 transitions. Word has length 116 [2024-11-27 20:29:33,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:33,487 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 162 transitions. [2024-11-27 20:29:33,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 12 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 10 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-27 20:29:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 162 transitions. [2024-11-27 20:29:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 20:29:33,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:33,490 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:33,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:29:33,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:33,694 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:33,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash 376075116, now seen corresponding path program 1 times [2024-11-27 20:29:33,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:33,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937791557] [2024-11-27 20:29:33,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:33,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-27 20:29:34,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:34,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937791557] [2024-11-27 20:29:34,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937791557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:34,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:34,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:29:34,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795580628] [2024-11-27 20:29:34,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:34,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:29:34,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:34,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:29:34,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:29:34,766 INFO L87 Difference]: Start difference. First operand 129 states and 162 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-27 20:29:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:34,882 INFO L93 Difference]: Finished difference Result 223 states and 277 transitions. [2024-11-27 20:29:34,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:29:34,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 116 [2024-11-27 20:29:34,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:34,885 INFO L225 Difference]: With dead ends: 223 [2024-11-27 20:29:34,885 INFO L226 Difference]: Without dead ends: 141 [2024-11-27 20:29:34,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:29:34,889 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 10 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:34,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 367 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:29:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-27 20:29:34,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2024-11-27 20:29:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 89 states have internal predecessors, (98), 34 states have call successors, (34), 12 states have call predecessors, (34), 14 states have return successors, (38), 33 states have call predecessors, (38), 32 states have call successors, (38) [2024-11-27 20:29:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 170 transitions. [2024-11-27 20:29:34,941 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 170 transitions. Word has length 116 [2024-11-27 20:29:34,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:34,942 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 170 transitions. [2024-11-27 20:29:34,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-27 20:29:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 170 transitions. [2024-11-27 20:29:34,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 20:29:34,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:34,947 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:34,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:29:34,948 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:34,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:34,948 INFO L85 PathProgramCache]: Analyzing trace with hash 634240554, now seen corresponding path program 1 times [2024-11-27 20:29:34,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:34,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459839863] [2024-11-27 20:29:34,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:34,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:29:35,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618274220] [2024-11-27 20:29:35,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:35,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:35,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:35,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:35,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:29:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:36,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 180 conjuncts are in the unsatisfiable core [2024-11-27 20:29:36,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:36,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:29:36,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2024-11-27 20:29:36,862 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 19 treesize of output 1 [2024-11-27 20:29:44,307 INFO L349 Elim1Store]: treesize reduction 110, result has 29.9 percent of original size [2024-11-27 20:29:44,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 167 treesize of output 212 [2024-11-27 20:29:44,389 INFO L349 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2024-11-27 20:29:44,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 164 [2024-11-27 20:29:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 45 proven. 28 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-27 20:29:44,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:59,367 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:30:01,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:01,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459839863] [2024-11-27 20:30:01,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:30:01,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618274220] [2024-11-27 20:30:01,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618274220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:01,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:01,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2024-11-27 20:30:01,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601097374] [2024-11-27 20:30:01,729 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:01,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 20:30:01,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:01,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 20:30:01,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1038, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 20:30:01,731 INFO L87 Difference]: Start difference. First operand 135 states and 170 transitions. Second operand has 30 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 11 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-27 20:30:15,048 WARN L286 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 70 DAG size of output: 70 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:30:17,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:17,425 INFO L93 Difference]: Finished difference Result 154 states and 190 transitions. [2024-11-27 20:30:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-27 20:30:17,426 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 11 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 116 [2024-11-27 20:30:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:17,428 INFO L225 Difference]: With dead ends: 154 [2024-11-27 20:30:17,428 INFO L226 Difference]: Without dead ends: 152 [2024-11-27 20:30:17,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=266, Invalid=3274, Unknown=0, NotChecked=0, Total=3540 [2024-11-27 20:30:17,430 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 162 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:17,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1168 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-27 20:30:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-27 20:30:17,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 135. [2024-11-27 20:30:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 89 states have internal predecessors, (98), 34 states have call successors, (34), 12 states have call predecessors, (34), 14 states have return successors, (38), 33 states have call predecessors, (38), 32 states have call successors, (38) [2024-11-27 20:30:17,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 170 transitions. [2024-11-27 20:30:17,454 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 170 transitions. Word has length 116 [2024-11-27 20:30:17,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:17,455 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 170 transitions. [2024-11-27 20:30:17,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 11 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-27 20:30:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 170 transitions. [2024-11-27 20:30:17,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-27 20:30:17,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:17,457 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:30:17,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:17,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:17,661 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:17,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:17,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1063784086, now seen corresponding path program 1 times [2024-11-27 20:30:17,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:17,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281563511] [2024-11-27 20:30:17,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:17,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:30:17,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024197754] [2024-11-27 20:30:17,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:17,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:17,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:17,889 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:17,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:30:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:18,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-27 20:30:18,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:18,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-27 20:30:18,911 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 35 treesize of output 9 [2024-11-27 20:30:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 30 proven. 14 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-27 20:30:22,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:23,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:23,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281563511] [2024-11-27 20:30:23,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:30:23,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024197754] [2024-11-27 20:30:23,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024197754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:23,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:23,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2024-11-27 20:30:23,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130692453] [2024-11-27 20:30:23,354 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:23,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 20:30:23,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:23,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 20:30:23,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:30:23,356 INFO L87 Difference]: Start difference. First operand 135 states and 170 transitions. Second operand has 23 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 20 states have internal predecessors, (56), 9 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-27 20:30:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:37,441 INFO L93 Difference]: Finished difference Result 234 states and 287 transitions. [2024-11-27 20:30:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 20:30:37,442 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 20 states have internal predecessors, (56), 9 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 122 [2024-11-27 20:30:37,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:37,444 INFO L225 Difference]: With dead ends: 234 [2024-11-27 20:30:37,445 INFO L226 Difference]: Without dead ends: 146 [2024-11-27 20:30:37,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=223, Invalid=1669, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 20:30:37,447 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 131 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 120 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:37,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 786 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1647 Invalid, 3 Unknown, 0 Unchecked, 7.9s Time] [2024-11-27 20:30:37,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-27 20:30:37,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2024-11-27 20:30:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 87 states have (on average 1.1379310344827587) internal successors, (99), 90 states have internal predecessors, (99), 34 states have call successors, (34), 12 states have call predecessors, (34), 14 states have return successors, (38), 33 states have call predecessors, (38), 32 states have call successors, (38) [2024-11-27 20:30:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2024-11-27 20:30:37,483 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 122 [2024-11-27 20:30:37,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:37,484 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2024-11-27 20:30:37,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 20 states have internal predecessors, (56), 9 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-27 20:30:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2024-11-27 20:30:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-27 20:30:37,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:37,487 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:30:37,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:37,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 20:30:37,691 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:37,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2002007894, now seen corresponding path program 1 times [2024-11-27 20:30:37,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:37,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663445532] [2024-11-27 20:30:37,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:37,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:30:37,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652740912] [2024-11-27 20:30:37,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:37,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:37,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:37,945 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:37,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:30:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:38,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-11-27 20:30:38,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:39,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-27 20:30:39,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-27 20:30:39,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-27 20:30:39,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 21 [2024-11-27 20:30:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 17 proven. 103 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-27 20:30:40,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:41,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:41,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663445532] [2024-11-27 20:30:41,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:30:41,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652740912] [2024-11-27 20:30:41,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652740912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:41,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:41,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-11-27 20:30:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577871214] [2024-11-27 20:30:41,017 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:41,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:30:41,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:41,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:30:41,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:30:41,020 INFO L87 Difference]: Start difference. First operand 136 states and 171 transitions. Second operand has 20 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 10 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-27 20:30:46,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:30:54,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:31:03,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:31:07,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:31:11,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:31:15,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:31:19,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-27 20:31:23,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:31:27,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:31:32,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-27 20:31:36,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:31:40,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:31:45,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:31:50,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:31:54,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:31:58,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:32:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:17,890 INFO L93 Difference]: Finished difference Result 367 states and 480 transitions. [2024-11-27 20:32:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:32:17,891 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 10 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 9 states have call successors, (20) Word has length 122 [2024-11-27 20:32:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:17,894 INFO L225 Difference]: With dead ends: 367 [2024-11-27 20:32:17,895 INFO L226 Difference]: Without dead ends: 278 [2024-11-27 20:32:17,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 111 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=242, Invalid=1644, Unknown=6, NotChecked=0, Total=1892 [2024-11-27 20:32:17,896 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 237 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 2361 mSolverCounterSat, 187 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 2361 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:17,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 951 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 2361 Invalid, 28 Unknown, 0 Unchecked, 71.2s Time] [2024-11-27 20:32:17,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-27 20:32:17,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 209. [2024-11-27 20:32:17,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 130 states have (on average 1.123076923076923) internal successors, (146), 134 states have internal predecessors, (146), 56 states have call successors, (56), 20 states have call predecessors, (56), 22 states have return successors, (60), 54 states have call predecessors, (60), 52 states have call successors, (60) [2024-11-27 20:32:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 262 transitions. [2024-11-27 20:32:17,998 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 262 transitions. Word has length 122 [2024-11-27 20:32:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:17,999 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 262 transitions. [2024-11-27 20:32:18,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 10 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-27 20:32:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 262 transitions. [2024-11-27 20:32:18,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-27 20:32:18,003 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:18,003 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:18,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:32:18,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:18,204 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:18,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:18,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1022392214, now seen corresponding path program 2 times [2024-11-27 20:32:18,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:18,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433901546] [2024-11-27 20:32:18,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:32:18,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:18,358 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:32:18,358 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-27 20:32:19,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:19,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433901546] [2024-11-27 20:32:19,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433901546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:19,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127407717] [2024-11-27 20:32:19,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:32:19,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:19,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:19,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:19,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:32:19,416 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:32:19,416 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:19,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-27 20:32:19,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:19,445 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 35 treesize of output 9 [2024-11-27 20:32:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-27 20:32:21,862 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:32:21,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127407717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:32:21,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:32:21,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2024-11-27 20:32:21,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126309137] [2024-11-27 20:32:21,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:32:21,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:32:21,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:21,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:32:21,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:32:21,865 INFO L87 Difference]: Start difference. First operand 209 states and 262 transitions. Second operand has 11 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 6 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-27 20:32:26,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:26,400 INFO L93 Difference]: Finished difference Result 334 states and 411 transitions. [2024-11-27 20:32:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:32:26,401 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 6 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 128 [2024-11-27 20:32:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:26,404 INFO L225 Difference]: With dead ends: 334 [2024-11-27 20:32:26,404 INFO L226 Difference]: Without dead ends: 208 [2024-11-27 20:32:26,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:32:26,405 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 39 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:26,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 371 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-27 20:32:26,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-27 20:32:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 165. [2024-11-27 20:32:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 104 states have (on average 1.1346153846153846) internal successors, (118), 106 states have internal predecessors, (118), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2024-11-27 20:32:26,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 207 transitions. [2024-11-27 20:32:26,454 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 207 transitions. Word has length 128 [2024-11-27 20:32:26,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:26,455 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 207 transitions. [2024-11-27 20:32:26,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 6 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-27 20:32:26,455 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 207 transitions. [2024-11-27 20:32:26,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-27 20:32:26,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:26,458 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-27 20:32:26,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:32:26,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 20:32:26,662 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:26,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:26,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1388216560, now seen corresponding path program 1 times [2024-11-27 20:32:26,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:26,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737448431] [2024-11-27 20:32:26,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:26,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 29 proven. 12 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-27 20:32:30,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:30,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737448431] [2024-11-27 20:32:30,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737448431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:30,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438566877] [2024-11-27 20:32:30,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:30,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:30,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:30,859 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:30,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:32:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:31,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-27 20:32:31,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:31,750 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 19 treesize of output 1 [2024-11-27 20:32:31,913 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_31| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_31| Int)) (and (<= |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_31| |c_aws_mul_size_checked_#in~r#1.offset|) (= |c_#memory_$Pointer$#2.base| (store |c_old(#memory_$Pointer$#2.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_31| (store (select |c_old(#memory_$Pointer$#2.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_31|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_31| (select (select |c_#memory_$Pointer$#2.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_31|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_31|)))))) is different from true [2024-11-27 20:32:31,937 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_31| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_31| Int)) (and (<= |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_31| 0) (= |c_#memory_$Pointer$#2.base| (store |c_old(#memory_$Pointer$#2.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_31| (store (select |c_old(#memory_$Pointer$#2.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_31|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_31| (select (select |c_#memory_$Pointer$#2.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_31|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_31|)))))) is different from true [2024-11-27 20:32:32,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:32:32,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-27 20:32:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 173 trivial. 10 not checked. [2024-11-27 20:32:36,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:37,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438566877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:37,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:32:37,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18] total 38 [2024-11-27 20:32:37,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131717689] [2024-11-27 20:32:37,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:37,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 20:32:37,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:37,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 20:32:37,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1411, Unknown=3, NotChecked=154, Total=1722 [2024-11-27 20:32:37,183 INFO L87 Difference]: Start difference. First operand 165 states and 207 transitions. Second operand has 38 states, 35 states have (on average 3.0) internal successors, (105), 36 states have internal predecessors, (105), 18 states have call successors, (44), 6 states have call predecessors, (44), 11 states have return successors, (43), 19 states have call predecessors, (43), 17 states have call successors, (43) [2024-11-27 20:32:41,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:32:45,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:32:49,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:32:57,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:33:01,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:33:06,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:33:10,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:33:18,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:33:22,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:33:26,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:33:30,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:33:34,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:33:39,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:33:53,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:33:53,905 INFO L93 Difference]: Finished difference Result 221 states and 276 transitions. [2024-11-27 20:33:53,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-27 20:33:53,906 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 3.0) internal successors, (105), 36 states have internal predecessors, (105), 18 states have call successors, (44), 6 states have call predecessors, (44), 11 states have return successors, (43), 19 states have call predecessors, (43), 17 states have call successors, (43) Word has length 149 [2024-11-27 20:33:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:33:53,908 INFO L225 Difference]: With dead ends: 221 [2024-11-27 20:33:53,908 INFO L226 Difference]: Without dead ends: 182 [2024-11-27 20:33:53,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=451, Invalid=3709, Unknown=8, NotChecked=254, Total=4422 [2024-11-27 20:33:53,910 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 239 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 216 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 3399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 55.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:33:53,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 623 Invalid, 3399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 2795 Invalid, 13 Unknown, 375 Unchecked, 55.3s Time] [2024-11-27 20:33:53,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-27 20:33:53,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2024-11-27 20:33:53,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 104 states have (on average 1.1153846153846154) internal successors, (116), 106 states have internal predecessors, (116), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2024-11-27 20:33:53,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 205 transitions. [2024-11-27 20:33:53,960 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 205 transitions. Word has length 149 [2024-11-27 20:33:53,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:33:53,961 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 205 transitions. [2024-11-27 20:33:53,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 3.0) internal successors, (105), 36 states have internal predecessors, (105), 18 states have call successors, (44), 6 states have call predecessors, (44), 11 states have return successors, (43), 19 states have call predecessors, (43), 17 states have call successors, (43) [2024-11-27 20:33:53,961 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 205 transitions. [2024-11-27 20:33:53,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-27 20:33:53,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:33:53,964 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:53,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:33:54,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:54,165 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:33:54,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:54,165 INFO L85 PathProgramCache]: Analyzing trace with hash 562116, now seen corresponding path program 1 times [2024-11-27 20:33:54,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:54,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689530640] [2024-11-27 20:33:54,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:54,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-27 20:33:59,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:59,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689530640] [2024-11-27 20:33:59,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689530640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:59,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212153301] [2024-11-27 20:33:59,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:59,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:59,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:59,028 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:59,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:33:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:59,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-27 20:33:59,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:33:59,817 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 19 treesize of output 1 [2024-11-27 20:33:59,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-27 20:34:00,138 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_41| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_41| Int)) (and (<= |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_41| |c_aws_mul_size_checked_#in~r#1.offset|) (= |c_#memory_$Pointer$#2.offset| (store |c_old(#memory_$Pointer$#2.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_41| (store (select |c_old(#memory_$Pointer$#2.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_41|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_41| (select (select |c_#memory_$Pointer$#2.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_41|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_41|)))) (= |c_#memory_$Pointer$#2.base| (store |c_old(#memory_$Pointer$#2.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_41| (select |c_#memory_$Pointer$#2.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_41|))))) is different from true [2024-11-27 20:34:01,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:34:01,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-27 20:34:01,076 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-27 20:34:01,076 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 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-27 20:34:01,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-27 20:34:41,793 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_42| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_42| Int)) (and (<= |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_42| |c_aws_mul_size_checked_#in~r#1.offset|) (= (store |c_old(#memory_$Pointer$#2.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_42| (store (select |c_old(#memory_$Pointer$#2.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_42|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_42| (select (select |c_#memory_$Pointer$#2.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_42|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_42|))) |c_#memory_$Pointer$#2.base|))) is different from true [2024-11-27 20:35:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 26 proven. 9 refuted. 4 times theorem prover too weak. 171 trivial. 3 not checked. [2024-11-27 20:35:11,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:35:16,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212153301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:16,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:35:16,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 51 [2024-11-27 20:35:16,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113877311] [2024-11-27 20:35:16,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:35:16,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-27 20:35:16,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:16,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-27 20:35:16,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2163, Unknown=126, NotChecked=194, Total=2652 [2024-11-27 20:35:16,467 INFO L87 Difference]: Start difference. First operand 165 states and 205 transitions. Second operand has 51 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 46 states have internal predecessors, (101), 19 states have call successors, (43), 7 states have call predecessors, (43), 11 states have return successors, (42), 19 states have call predecessors, (42), 18 states have call successors, (42) [2024-11-27 20:35:20,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:35:25,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:35:31,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:35:40,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:35:44,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:35:48,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:35:54,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:36:02,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:36:06,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:36:10,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:36:16,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:36:20,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:36:27,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:36:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:36:46,448 INFO L93 Difference]: Finished difference Result 212 states and 261 transitions. [2024-11-27 20:36:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-27 20:36:46,449 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 46 states have internal predecessors, (101), 19 states have call successors, (43), 7 states have call predecessors, (43), 11 states have return successors, (42), 19 states have call predecessors, (42), 18 states have call successors, (42) Word has length 143 [2024-11-27 20:36:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:36:46,451 INFO L225 Difference]: With dead ends: 212 [2024-11-27 20:36:46,451 INFO L226 Difference]: Without dead ends: 172 [2024-11-27 20:36:46,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 98.7s TimeCoverageRelationStatistics Valid=568, Invalid=5921, Unknown=161, NotChecked=322, Total=6972 [2024-11-27 20:36:46,453 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 325 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 4078 mSolverCounterSat, 265 mSolverCounterUnsat, 48 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 4749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 4078 IncrementalHoareTripleChecker+Invalid, 48 IncrementalHoareTripleChecker+Unknown, 358 IncrementalHoareTripleChecker+Unchecked, 67.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:36:46,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 770 Invalid, 4749 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [265 Valid, 4078 Invalid, 48 Unknown, 358 Unchecked, 67.3s Time] [2024-11-27 20:36:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-27 20:36:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 165. [2024-11-27 20:36:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 104 states have (on average 1.0961538461538463) internal successors, (114), 106 states have internal predecessors, (114), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2024-11-27 20:36:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 203 transitions. [2024-11-27 20:36:46,492 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 203 transitions. Word has length 143 [2024-11-27 20:36:46,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:36:46,493 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 203 transitions. [2024-11-27 20:36:46,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 46 states have internal predecessors, (101), 19 states have call successors, (43), 7 states have call predecessors, (43), 11 states have return successors, (42), 19 states have call predecessors, (42), 18 states have call successors, (42) [2024-11-27 20:36:46,493 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 203 transitions. [2024-11-27 20:36:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 20:36:46,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:36:46,497 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:36:46,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:36:46,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:36:46,697 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:36:46,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:46,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1313242462, now seen corresponding path program 1 times [2024-11-27 20:36:46,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:46,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794722782] [2024-11-27 20:36:46,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:46,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:36:47,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888270257] [2024-11-27 20:36:47,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:47,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:47,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:36:47,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:36:47,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:36:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:36:47,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 212 conjuncts are in the unsatisfiable core [2024-11-27 20:36:47,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:36:47,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-27 20:36:48,392 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-27 20:36:48,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-27 20:36:49,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-27 20:36:49,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:36:49,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2024-11-27 20:36:49,623 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-27 20:36:49,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-27 20:36:51,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:36:51,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2024-11-27 20:36:52,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 3 [2024-11-27 20:36:52,605 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_52| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_51| Int)) (and (= |c_#memory_int#2| (store |c_old(#memory_int#2)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int#2)| |c_aws_mul_size_checked_#in~r#1.base|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_52| (* |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_51| |c_aws_mul_size_checked_#in~a#1|)))) (<= |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_52| |c_aws_mul_size_checked_#in~r#1.offset|))) is different from true [2024-11-27 20:37:01,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:01,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2024-11-27 20:37:01,655 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-11-27 20:37:01,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2024-11-27 20:37:16,190 INFO L349 Elim1Store]: treesize reduction 302, result has 19.0 percent of original size [2024-11-27 20:37:16,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 148 treesize of output 205 [2024-11-27 20:37:16,481 INFO L349 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2024-11-27 20:37:16,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 139 [2024-11-27 20:37:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 8 proven. 155 refuted. 0 times theorem prover too weak. 43 trivial. 9 not checked. [2024-11-27 20:37:17,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:37:33,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:37:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794722782] [2024-11-27 20:37:33,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:37:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888270257] [2024-11-27 20:37:33,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888270257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:37:33,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:37:33,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2024-11-27 20:37:33,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960912273] [2024-11-27 20:37:33,003 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:37:33,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-27 20:37:33,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:37:33,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-27 20:37:33,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2014, Unknown=5, NotChecked=90, Total=2256 [2024-11-27 20:37:33,006 INFO L87 Difference]: Start difference. First operand 165 states and 203 transitions. Second operand has 44 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 37 states have internal predecessors, (78), 14 states have call successors, (24), 9 states have call predecessors, (24), 13 states have return successors, (23), 15 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-27 20:37:49,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:38:06,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:38:11,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:38:35,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:38:39,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:38:53,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:38:57,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:39:09,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:39:18,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:39:22,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:39:26,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:39:33,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:39:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:39:37,058 INFO L93 Difference]: Finished difference Result 258 states and 311 transitions. [2024-11-27 20:39:37,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-27 20:39:37,059 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 37 states have internal predecessors, (78), 14 states have call successors, (24), 9 states have call predecessors, (24), 13 states have return successors, (23), 15 states have call predecessors, (23), 13 states have call successors, (23) Word has length 145 [2024-11-27 20:39:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:39:37,062 INFO L225 Difference]: With dead ends: 258 [2024-11-27 20:39:37,062 INFO L226 Difference]: Without dead ends: 256 [2024-11-27 20:39:37,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 84 SyntacticMatches, 21 SemanticMatches, 90 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2302 ImplicationChecksByTransitivity, 77.2s TimeCoverageRelationStatistics Valid=694, Invalid=7489, Unknown=11, NotChecked=178, Total=8372 [2024-11-27 20:39:37,065 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 392 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 4243 mSolverCounterSat, 339 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 4839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 4243 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 244 IncrementalHoareTripleChecker+Unchecked, 69.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:39:37,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 966 Invalid, 4839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 4243 Invalid, 13 Unknown, 244 Unchecked, 69.4s Time] [2024-11-27 20:39:37,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-27 20:39:37,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 209. [2024-11-27 20:39:37,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 135 states have (on average 1.0962962962962963) internal successors, (148), 138 states have internal predecessors, (148), 49 states have call successors, (49), 22 states have call predecessors, (49), 24 states have return successors, (58), 48 states have call predecessors, (58), 47 states have call successors, (58) [2024-11-27 20:39:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 255 transitions. [2024-11-27 20:39:37,134 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 255 transitions. Word has length 145 [2024-11-27 20:39:37,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:39:37,135 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 255 transitions. [2024-11-27 20:39:37,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 37 states have internal predecessors, (78), 14 states have call successors, (24), 9 states have call predecessors, (24), 13 states have return successors, (23), 15 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-27 20:39:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 255 transitions. [2024-11-27 20:39:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-27 20:39:37,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:39:37,137 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-27 20:39:37,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 20:39:37,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 20:39:37,338 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:39:37,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:39:37,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1006825162, now seen corresponding path program 1 times [2024-11-27 20:39:37,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:39:37,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158352575] [2024-11-27 20:39:37,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:39:37,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:39:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:39:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-27 20:39:40,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:39:40,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158352575] [2024-11-27 20:39:40,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158352575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:39:40,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299789190] [2024-11-27 20:39:40,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:39:40,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:39:40,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:39:40,060 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:39:40,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:39:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:39:40,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-27 20:39:40,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:39:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-27 20:39:41,769 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:39:43,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299789190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:39:43,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:39:43,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 17 [2024-11-27 20:39:43,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113968031] [2024-11-27 20:39:43,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:39:43,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:39:43,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:39:43,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:39:43,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:39:43,013 INFO L87 Difference]: Start difference. First operand 209 states and 255 transitions. Second operand has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 7 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 7 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-27 20:39:47,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:39:52,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:39:56,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:40:00,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:40:04,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:40:09,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:40:13,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:40:18,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:40:23,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:40:28,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:40:33,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:40:37,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:40:41,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:40:42,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:40:42,130 INFO L93 Difference]: Finished difference Result 349 states and 422 transitions. [2024-11-27 20:40:42,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 20:40:42,131 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 7 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 7 states have call predecessors, (24), 6 states have call successors, (24) Word has length 151 [2024-11-27 20:40:42,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:40:42,139 INFO L225 Difference]: With dead ends: 349 [2024-11-27 20:40:42,139 INFO L226 Difference]: Without dead ends: 295 [2024-11-27 20:40:42,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 166 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2024-11-27 20:40:42,141 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 97 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 67 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:40:42,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 733 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1437 Invalid, 16 Unknown, 0 Unchecked, 57.8s Time] [2024-11-27 20:40:42,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-27 20:40:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 254. [2024-11-27 20:40:42,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 166 states have (on average 1.0662650602409638) internal successors, (177), 169 states have internal predecessors, (177), 56 states have call successors, (56), 30 states have call predecessors, (56), 31 states have return successors, (72), 54 states have call predecessors, (72), 54 states have call successors, (72) [2024-11-27 20:40:42,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 305 transitions. [2024-11-27 20:40:42,227 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 305 transitions. Word has length 151 [2024-11-27 20:40:42,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:40:42,228 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 305 transitions. [2024-11-27 20:40:42,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 7 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 7 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-27 20:40:42,228 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 305 transitions. [2024-11-27 20:40:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 20:40:42,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:40:42,231 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:40:42,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:40:42,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:40:42,431 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:40:42,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:40:42,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2043501026, now seen corresponding path program 1 times [2024-11-27 20:40:42,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:40:42,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281570485] [2024-11-27 20:40:42,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:40:42,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:40:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:40:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-27 20:40:47,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:40:47,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281570485] [2024-11-27 20:40:47,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281570485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:40:47,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879519614] [2024-11-27 20:40:47,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:40:47,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:40:47,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:40:47,527 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:40:47,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:40:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:40:48,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 179 conjuncts are in the unsatisfiable core [2024-11-27 20:40:48,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:40:48,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-27 20:40:49,268 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-27 20:40:49,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-27 20:40:51,645 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-27 20:40:51,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-27 20:40:51,952 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-11-27 20:40:51,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2024-11-27 20:40:55,679 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 19 treesize of output 1 [2024-11-27 20:40:55,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2024-11-27 20:40:59,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:40:59,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2024-11-27 20:40:59,495 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-11-27 20:40:59,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 31 [2024-11-27 20:40:59,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-27 20:41:13,656 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int#2| |c_aws_array_list_is_valid_#in~list.base|))) (let ((.cse0 (mod (select .cse5 (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (and (not (= .cse0 0)) (let ((.cse4 (= (mod (select .cse5 (+ |c_aws_array_list_is_valid_#in~list.offset| 24)) 18446744073709551616) 0)) (.cse3 (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_68| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_68| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_69| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68| Int) (|v_aws_array_list_is_valid_~#required_size~0.offset_57| Int)) (and (<= |v_aws_array_list_is_valid_~#required_size~0.offset_57| 0) (= |c_#memory_int#2| (store |c_old(#memory_int#2)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68| (store (select |c_old(#memory_int#2)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_68| (* |v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_69| |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_68|)))) (<= |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_68| |v_aws_array_list_is_valid_~#required_size~0.offset_57|) (= |c_#memory_$Pointer$#2.base| (store |c_old(#memory_$Pointer$#2.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68| (store (select |c_old(#memory_$Pointer$#2.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_68| (select (select |c_#memory_$Pointer$#2.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_68|)))) (<= (mod (select (select |c_#memory_int#2| |aws_array_list_is_valid_~#required_size~0.base|) |v_aws_array_list_is_valid_~#required_size~0.offset_57|) 18446744073709551616) .cse0)))) (.cse2 (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_68| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_68| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_69| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68| Int) (|v_aws_array_list_is_valid_~#required_size~0.offset_57| Int)) (and (<= |v_aws_array_list_is_valid_~#required_size~0.offset_57| 0) (= |c_#memory_int#2| (store |c_old(#memory_int#2)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68| (store (select |c_old(#memory_int#2)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_68| (* |v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_69| |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_68|)))) (<= |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_68| |v_aws_array_list_is_valid_~#required_size~0.offset_57|) (<= (+ .cse0 1) (mod (select (select |c_#memory_int#2| |aws_array_list_is_valid_~#required_size~0.base|) |v_aws_array_list_is_valid_~#required_size~0.offset_57|) 18446744073709551616)) (= |c_#memory_$Pointer$#2.base| (store |c_old(#memory_$Pointer$#2.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68| (store (select |c_old(#memory_$Pointer$#2.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_68| (select (select |c_#memory_$Pointer$#2.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_68|))))))) (.cse1 (= |c_aws_array_list_is_valid_#res| 0))) (or (and .cse1 (or .cse2 (and .cse3 .cse4))) (and .cse3 (not .cse4) (= |c_aws_array_list_is_valid_#res| 1)) (and (or .cse3 .cse2) .cse1 (= (select (select |c_#memory_$Pointer$#2.base| |c_aws_array_list_is_valid_#in~list.base|) (+ 32 |c_aws_array_list_is_valid_#in~list.offset|)) 0))))))) is different from true [2024-11-27 20:41:16,396 INFO L349 Elim1Store]: treesize reduction 410, result has 0.2 percent of original size [2024-11-27 20:41:16,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 333 treesize of output 1 [2024-11-27 20:41:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 46 proven. 78 refuted. 0 times theorem prover too weak. 89 trivial. 2 not checked. [2024-11-27 20:41:16,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:41:28,546 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (+ 32 |c_ULTIMATE.start_aws_array_list_init_static_harness_~#list~0#1.offset|)) (.cse3 (+ |c_ULTIMATE.start_aws_array_list_init_static_harness_~#list~0#1.offset| 24)) (.cse4 (+ |c_ULTIMATE.start_aws_array_list_init_static_harness_~#list~0#1.offset| 8))) (and (forall ((|v_aws_array_list_is_valid_~#required_size~0.offset_65| Int)) (or (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77| Int)) (or (< |v_aws_array_list_is_valid_~#required_size~0.offset_65| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77|) (forall ((v_DerPreprocessor_5 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| Int)) (or (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_78| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_77| Int)) (let ((.cse1 (store |c_#memory_int#2| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| (store (select |c_#memory_int#2| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77| (* |v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_78| |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_77|))))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_aws_array_list_init_static_harness_~#list~0#1.base|))) (let ((.cse0 (mod (select .cse2 .cse4) 18446744073709551616))) (or (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_40| Int)) (< .cse0 (mod (select (select .cse1 |v_aws_array_list_is_valid_~#required_size~0.base_40|) |v_aws_array_list_is_valid_~#required_size~0.offset_65|) 18446744073709551616))) (= (mod (select .cse2 .cse3) 18446744073709551616) 0) (= .cse0 0)))))) (not (= (select (select (store |c_#memory_$Pointer$#2.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| (store (select |c_#memory_$Pointer$#2.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77| v_DerPreprocessor_5)) |c_ULTIMATE.start_aws_array_list_init_static_harness_~#list~0#1.base|) .cse5) 0)))))) (< 0 |v_aws_array_list_is_valid_~#required_size~0.offset_65|))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.offset_65| Int)) (or (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77| Int)) (or (< |v_aws_array_list_is_valid_~#required_size~0.offset_65| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77|) (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_78| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_77| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| Int)) (let ((.cse6 (store |c_#memory_int#2| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| (store (select |c_#memory_int#2| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77| (* |v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_78| |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_77|))))) (let ((.cse8 (select .cse6 |c_ULTIMATE.start_aws_array_list_init_static_harness_~#list~0#1.base|))) (let ((.cse7 (mod (select .cse8 .cse4) 18446744073709551616))) (or (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_40| Int)) (< (mod (select (select .cse6 |v_aws_array_list_is_valid_~#required_size~0.base_40|) |v_aws_array_list_is_valid_~#required_size~0.offset_65|) 18446744073709551616) (+ .cse7 1))) (not (= (mod (select .cse8 .cse3) 18446744073709551616) 0)) (= .cse7 0)))))))) (< 0 |v_aws_array_list_is_valid_~#required_size~0.offset_65|))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.offset_65| Int)) (or (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77| Int)) (or (< |v_aws_array_list_is_valid_~#required_size~0.offset_65| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77|) (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_78| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_77| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| Int)) (let ((.cse9 (store |c_#memory_int#2| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| (store (select |c_#memory_int#2| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77| (* |v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_78| |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_77|))))) (let ((.cse11 (select .cse9 |c_ULTIMATE.start_aws_array_list_init_static_harness_~#list~0#1.base|))) (let ((.cse10 (mod (select .cse11 .cse4) 18446744073709551616))) (or (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_40| Int)) (< (mod (select (select .cse9 |v_aws_array_list_is_valid_~#required_size~0.base_40|) |v_aws_array_list_is_valid_~#required_size~0.offset_65|) 18446744073709551616) (+ .cse10 1))) (= (mod (select .cse11 .cse3) 18446744073709551616) 0) (= .cse10 0)))))))) (< 0 |v_aws_array_list_is_valid_~#required_size~0.offset_65|))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.offset_65| Int)) (or (< 0 |v_aws_array_list_is_valid_~#required_size~0.offset_65|) (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77| Int)) (or (< |v_aws_array_list_is_valid_~#required_size~0.offset_65| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77|) (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_78| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_77| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| Int)) (let ((.cse13 (store |c_#memory_int#2| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| (store (select |c_#memory_int#2| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77| (* |v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_78| |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_77|))))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_aws_array_list_init_static_harness_~#list~0#1.base|))) (let ((.cse12 (mod (select .cse14 .cse4) 18446744073709551616))) (or (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_40| Int)) (< .cse12 (mod (select (select .cse13 |v_aws_array_list_is_valid_~#required_size~0.base_40|) |v_aws_array_list_is_valid_~#required_size~0.offset_65|) 18446744073709551616))) (not (= (mod (select .cse14 .cse3) 18446744073709551616) 0)) (= .cse12 0)))))))))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.offset_65| Int)) (or (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77| Int)) (or (< |v_aws_array_list_is_valid_~#required_size~0.offset_65| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77|) (forall ((v_DerPreprocessor_5 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| Int)) (or (not (= (select (select (store |c_#memory_$Pointer$#2.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| (store (select |c_#memory_$Pointer$#2.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77| v_DerPreprocessor_5)) |c_ULTIMATE.start_aws_array_list_init_static_harness_~#list~0#1.base|) .cse5) 0)) (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_78| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_77| Int)) (let ((.cse15 (store |c_#memory_int#2| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| (store (select |c_#memory_int#2| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset_77| (* |v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_78| |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_77|))))) (let ((.cse17 (select .cse15 |c_ULTIMATE.start_aws_array_list_init_static_harness_~#list~0#1.base|))) (let ((.cse16 (mod (select .cse17 .cse4) 18446744073709551616))) (or (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_40| Int)) (< (mod (select (select .cse15 |v_aws_array_list_is_valid_~#required_size~0.base_40|) |v_aws_array_list_is_valid_~#required_size~0.offset_65|) 18446744073709551616) (+ .cse16 1))) (= (mod (select .cse17 .cse3) 18446744073709551616) 0) (= .cse16 0)))))))))) (< 0 |v_aws_array_list_is_valid_~#required_size~0.offset_65|))))) is different from false [2024-11-27 20:41:28,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879519614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:41:28,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:41:28,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 41] total 63 [2024-11-27 20:41:28,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519086572] [2024-11-27 20:41:28,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:41:28,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-27 20:41:28,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:41:28,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-27 20:41:28,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=3902, Unknown=20, NotChecked=254, Total=4422 [2024-11-27 20:41:28,572 INFO L87 Difference]: Start difference. First operand 254 states and 305 transitions. Second operand has 63 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 54 states have internal predecessors, (122), 21 states have call successors, (43), 9 states have call predecessors, (43), 14 states have return successors, (43), 23 states have call predecessors, (43), 20 states have call successors, (43) [2024-11-27 20:41:46,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:42:13,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:42:40,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:42:44,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:42:49,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:42:59,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:42:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:42:59,106 INFO L93 Difference]: Finished difference Result 376 states and 445 transitions. [2024-11-27 20:42:59,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-27 20:42:59,110 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 54 states have internal predecessors, (122), 21 states have call successors, (43), 9 states have call predecessors, (43), 14 states have return successors, (43), 23 states have call predecessors, (43), 20 states have call successors, (43) Word has length 145 [2024-11-27 20:42:59,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:42:59,112 INFO L225 Difference]: With dead ends: 376 [2024-11-27 20:42:59,112 INFO L226 Difference]: Without dead ends: 317 [2024-11-27 20:42:59,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 94 SyntacticMatches, 21 SemanticMatches, 130 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5592 ImplicationChecksByTransitivity, 60.8s TimeCoverageRelationStatistics Valid=1229, Invalid=15528, Unknown=21, NotChecked=514, Total=17292 [2024-11-27 20:42:59,117 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 463 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 6518 mSolverCounterSat, 392 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 7182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 6518 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 54.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:42:59,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1179 Invalid, 7182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [392 Valid, 6518 Invalid, 11 Unknown, 261 Unchecked, 54.7s Time] [2024-11-27 20:42:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-27 20:42:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 263. [2024-11-27 20:42:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 174 states have (on average 1.0574712643678161) internal successors, (184), 177 states have internal predecessors, (184), 56 states have call successors, (56), 30 states have call predecessors, (56), 32 states have return successors, (69), 55 states have call predecessors, (69), 54 states have call successors, (69) [2024-11-27 20:42:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 309 transitions. [2024-11-27 20:42:59,212 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 309 transitions. Word has length 145 [2024-11-27 20:42:59,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:42:59,212 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 309 transitions. [2024-11-27 20:42:59,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 54 states have internal predecessors, (122), 21 states have call successors, (43), 9 states have call predecessors, (43), 14 states have return successors, (43), 23 states have call predecessors, (43), 20 states have call successors, (43) [2024-11-27 20:42:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 309 transitions. [2024-11-27 20:42:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 20:42:59,217 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:42:59,217 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:42:59,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:42:59,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:42:59,417 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:42:59,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:42:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1619854304, now seen corresponding path program 1 times [2024-11-27 20:42:59,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:42:59,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403997828] [2024-11-27 20:42:59,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:42:59,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:42:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:43:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-27 20:43:00,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:43:00,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403997828] [2024-11-27 20:43:00,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403997828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:43:00,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439126189] [2024-11-27 20:43:00,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:43:00,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:43:00,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:43:00,024 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:43:00,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:43:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:43:00,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:43:00,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:43:00,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2024-11-27 20:43:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 20:43:00,654 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:43:00,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439126189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:43:00,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:43:00,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-27 20:43:00,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982673326] [2024-11-27 20:43:00,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:43:00,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:43:00,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:43:00,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:43:00,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:43:00,656 INFO L87 Difference]: Start difference. First operand 263 states and 309 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-27 20:43:00,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:43:00,967 INFO L93 Difference]: Finished difference Result 323 states and 375 transitions. [2024-11-27 20:43:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:43:00,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 145 [2024-11-27 20:43:00,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:43:00,970 INFO L225 Difference]: With dead ends: 323 [2024-11-27 20:43:00,970 INFO L226 Difference]: Without dead ends: 224 [2024-11-27 20:43:00,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:43:00,971 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 4 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:43:00,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 485 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:43:00,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-27 20:43:01,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-11-27 20:43:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 146 states have (on average 1.0547945205479452) internal successors, (154), 148 states have internal predecessors, (154), 51 states have call successors, (51), 25 states have call predecessors, (51), 26 states have return successors, (58), 50 states have call predecessors, (58), 49 states have call successors, (58) [2024-11-27 20:43:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 263 transitions. [2024-11-27 20:43:01,037 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 263 transitions. Word has length 145 [2024-11-27 20:43:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:43:01,037 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 263 transitions. [2024-11-27 20:43:01,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-27 20:43:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 263 transitions. [2024-11-27 20:43:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 20:43:01,039 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:43:01,039 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:43:01,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:43:01,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:43:01,240 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:43:01,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:43:01,240 INFO L85 PathProgramCache]: Analyzing trace with hash 707529886, now seen corresponding path program 2 times [2024-11-27 20:43:01,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:43:01,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498784231] [2024-11-27 20:43:01,240 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:43:01,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:43:01,557 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:43:01,557 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:43:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-27 20:43:06,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:43:06,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498784231] [2024-11-27 20:43:06,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498784231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:43:06,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517321744] [2024-11-27 20:43:06,078 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:43:06,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:43:06,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:43:06,080 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:43:06,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95b4e17-0953-4c44-8661-9519338da455/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:43:06,554 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:43:06,555 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:43:06,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-27 20:43:06,567 INFO L279 TraceCheckSpWp]: Computing forward predicates...