./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0a45241a50bca97d16f2ca30787e76783488e633dbd3fde1131a60622cf8ee85 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:24:54,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:24:54,984 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 01:24:54,997 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:24:54,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:24:55,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:24:55,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:24:55,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:24:55,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:24:55,048 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:24:55,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:24:55,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:24:55,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:24:55,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:24:55,051 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:24:55,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:24:55,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:24:55,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:24:55,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:24:55,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:24:55,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:24:55,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:24:55,052 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:24:55,052 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:24:55,052 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:24:55,052 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:24:55,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:24:55,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:24:55,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:24:55,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:24:55,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:24:55,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:24:55,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:24:55,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:24:55,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:24:55,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:24:55,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:24:55,054 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:24:55,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:24:55,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:24:55,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:24:55,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:24:55,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:24:55,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:24:55,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:24:55,055 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a45241a50bca97d16f2ca30787e76783488e633dbd3fde1131a60622cf8ee85 [2024-11-24 01:24:55,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:24:55,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:24:55,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:24:55,466 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:24:55,467 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:24:55,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i [2024-11-24 01:24:58,800 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/data/2fa741205/00ff09545b4942248303722fb6570870/FLAGebd367ee9 [2024-11-24 01:24:59,450 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:24:59,451 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i [2024-11-24 01:24:59,485 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/data/2fa741205/00ff09545b4942248303722fb6570870/FLAGebd367ee9 [2024-11-24 01:24:59,510 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/data/2fa741205/00ff09545b4942248303722fb6570870 [2024-11-24 01:24:59,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:24:59,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:24:59,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:24:59,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:24:59,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:24:59,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:24:59" (1/1) ... [2024-11-24 01:24:59,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b922ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:59, skipping insertion in model container [2024-11-24 01:24:59,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:24:59" (1/1) ... [2024-11-24 01:24:59,642 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:24:59,971 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4499,4512] [2024-11-24 01:24:59,982 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4559,4572] [2024-11-24 01:25:01,134 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,135 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,136 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,137 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,138 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,154 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,154 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,156 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,157 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,159 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,160 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,161 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,161 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:01,947 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[150662,150675] [2024-11-24 01:25:01,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:25:01,966 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:25:01,982 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4499,4512] [2024-11-24 01:25:01,983 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4559,4572] [2024-11-24 01:25:02,039 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,039 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,040 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,040 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,041 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,052 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,052 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,054 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,054 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,055 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,056 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,057 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,057 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:02,244 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[150662,150675] [2024-11-24 01:25:02,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:25:02,565 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:25:02,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02 WrapperNode [2024-11-24 01:25:02,566 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:25:02,567 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:25:02,567 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:25:02,567 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:25:02,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,681 INFO L138 Inliner]: procedures = 668, calls = 1044, calls flagged for inlining = 53, calls inlined = 8, statements flattened = 223 [2024-11-24 01:25:02,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:25:02,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:25:02,683 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:25:02,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:25:02,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,739 INFO L175 MemorySlicer]: Split 43 memory accesses to 3 slices as follows [2, 5, 36]. 84 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 9 writes are split as follows [0, 0, 9]. [2024-11-24 01:25:02,739 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,757 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:25:02,799 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:25:02,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:25:02,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:25:02,801 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (1/1) ... [2024-11-24 01:25:02,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:25:02,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:25:02,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:25:02,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:25:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-24 01:25:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-24 01:25:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2024-11-24 01:25:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2024-11-24 01:25:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:25:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:25:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:25:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 01:25:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 01:25:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 01:25:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-24 01:25:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-24 01:25:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:25:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-24 01:25:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-24 01:25:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:25:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 01:25:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 01:25:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 01:25:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:25:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:25:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-24 01:25:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-24 01:25:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-24 01:25:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-24 01:25:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-24 01:25:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-24 01:25:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-24 01:25:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-24 01:25:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:25:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:25:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:25:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 01:25:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 01:25:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 01:25:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 01:25:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 01:25:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 01:25:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-24 01:25:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-24 01:25:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-24 01:25:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-24 01:25:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:25:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:25:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:25:03,244 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:25:03,247 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:25:03,945 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2024-11-24 01:25:03,945 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:25:03,968 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:25:03,968 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 01:25:03,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:25:03 BoogieIcfgContainer [2024-11-24 01:25:03,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:25:04,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:25:04,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:25:04,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:25:04,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:24:59" (1/3) ... [2024-11-24 01:25:04,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7e05bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:25:04, skipping insertion in model container [2024-11-24 01:25:04,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:02" (2/3) ... [2024-11-24 01:25:04,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7e05bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:25:04, skipping insertion in model container [2024-11-24 01:25:04,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:25:03" (3/3) ... [2024-11-24 01:25:04,022 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_front_harness.i [2024-11-24 01:25:04,043 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:25:04,045 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_pop_front_harness.i that has 13 procedures, 145 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-24 01:25:04,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:25:04,129 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;@1f013867, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:25:04,130 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:25:04,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-24 01:25:04,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:25:04,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:04,156 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:25:04,156 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:04,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:04,163 INFO L85 PathProgramCache]: Analyzing trace with hash -629864822, now seen corresponding path program 1 times [2024-11-24 01:25:04,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:04,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684909698] [2024-11-24 01:25:04,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:04,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-24 01:25:04,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:04,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684909698] [2024-11-24 01:25:04,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684909698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:25:04,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090498151] [2024-11-24 01:25:04,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:04,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:25:04,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:25:04,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:25:04,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:25:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:05,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:25:05,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:25:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-24 01:25:05,238 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:25:05,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090498151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:05,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:25:05,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:25:05,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795116442] [2024-11-24 01:25:05,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:05,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:25:05,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:05,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:25:05,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:25:05,281 INFO L87 Difference]: Start difference. First operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 01:25:05,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:05,359 INFO L93 Difference]: Finished difference Result 266 states and 401 transitions. [2024-11-24 01:25:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:25:05,366 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2024-11-24 01:25:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:05,379 INFO L225 Difference]: With dead ends: 266 [2024-11-24 01:25:05,379 INFO L226 Difference]: Without dead ends: 132 [2024-11-24 01:25:05,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:25:05,393 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:05,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:25:05,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-24 01:25:05,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-24 01:25:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 84 states have (on average 1.25) internal successors, (105), 85 states have internal predecessors, (105), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-24 01:25:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 178 transitions. [2024-11-24 01:25:05,460 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 178 transitions. Word has length 116 [2024-11-24 01:25:05,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:05,460 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 178 transitions. [2024-11-24 01:25:05,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 01:25:05,461 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 178 transitions. [2024-11-24 01:25:05,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:25:05,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:05,465 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:25:05,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:25:05,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:25:05,666 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:05,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:05,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1855713404, now seen corresponding path program 1 times [2024-11-24 01:25:05,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:05,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294257254] [2024-11-24 01:25:05,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:05,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-24 01:25:07,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:07,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294257254] [2024-11-24 01:25:07,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294257254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:25:07,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863106329] [2024-11-24 01:25:07,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:07,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:25:07,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:25:07,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:25:07,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:25:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:07,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-24 01:25:07,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:25:07,804 INFO L349 Elim1Store]: treesize reduction 42, result has 31.1 percent of original size [2024-11-24 01:25:07,809 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 52 treesize of output 80 [2024-11-24 01:25:07,833 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 16 treesize of output 15 [2024-11-24 01:25:08,022 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:25:08,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-24 01:25:08,032 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 13 treesize of output 9 [2024-11-24 01:25:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-24 01:25:10,650 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:25:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863106329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:10,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:25:10,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2024-11-24 01:25:10,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109856390] [2024-11-24 01:25:10,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:10,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:25:10,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:10,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:25:10,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:25:10,656 INFO L87 Difference]: Start difference. First operand 132 states and 178 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-24 01:25:14,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:25:18,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:25:22,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:25:26,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:25:30,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:25:35,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:25:40,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:25:44,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:25:48,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:25:48,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:48,600 INFO L93 Difference]: Finished difference Result 344 states and 473 transitions. [2024-11-24 01:25:48,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 01:25:48,601 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 116 [2024-11-24 01:25:48,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:48,605 INFO L225 Difference]: With dead ends: 344 [2024-11-24 01:25:48,606 INFO L226 Difference]: Without dead ends: 220 [2024-11-24 01:25:48,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 87 SyntacticMatches, 20 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:25:48,612 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 380 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 115 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:48,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 761 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 472 Invalid, 9 Unknown, 0 Unchecked, 37.4s Time] [2024-11-24 01:25:48,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-24 01:25:48,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2024-11-24 01:25:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 137 states have (on average 1.2627737226277371) internal successors, (173), 139 states have internal predecessors, (173), 60 states have call successors, (60), 17 states have call predecessors, (60), 16 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-24 01:25:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 292 transitions. [2024-11-24 01:25:48,675 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 292 transitions. Word has length 116 [2024-11-24 01:25:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:48,675 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 292 transitions. [2024-11-24 01:25:48,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-24 01:25:48,676 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 292 transitions. [2024-11-24 01:25:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:25:48,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:48,683 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:25:48,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:25:48,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-24 01:25:48,884 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:48,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2079877694, now seen corresponding path program 1 times [2024-11-24 01:25:48,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:48,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824056933] [2024-11-24 01:25:48,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:48,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-24 01:25:49,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:49,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824056933] [2024-11-24 01:25:49,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824056933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:25:49,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238774607] [2024-11-24 01:25:49,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:49,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:25:49,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:25:49,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:25:49,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:25:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:49,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-24 01:25:49,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:25:50,072 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 22 treesize of output 7 [2024-11-24 01:25:50,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2024-11-24 01:25:51,376 INFO L349 Elim1Store]: treesize reduction 30, result has 43.4 percent of original size [2024-11-24 01:25:51,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 37 treesize of output 39 [2024-11-24 01:25:51,395 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-24 01:25:51,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2024-11-24 01:25:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 12 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-24 01:25:51,502 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:25:52,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 182 treesize of output 174 [2024-11-24 01:25:52,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 170 treesize of output 162 [2024-11-24 01:25:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-24 01:25:52,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238774607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:25:52,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:25:52,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 17] total 30 [2024-11-24 01:25:52,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956276952] [2024-11-24 01:25:52,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:25:52,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-24 01:25:52,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:52,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-24 01:25:52,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=791, Unknown=0, NotChecked=0, Total=870 [2024-11-24 01:25:52,998 INFO L87 Difference]: Start difference. First operand 214 states and 292 transitions. Second operand has 30 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 26 states have internal predecessors, (95), 17 states have call successors, (45), 4 states have call predecessors, (45), 9 states have return successors, (43), 15 states have call predecessors, (43), 17 states have call successors, (43) [2024-11-24 01:25:55,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:55,350 INFO L93 Difference]: Finished difference Result 337 states and 455 transitions. [2024-11-24 01:25:55,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 01:25:55,351 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 26 states have internal predecessors, (95), 17 states have call successors, (45), 4 states have call predecessors, (45), 9 states have return successors, (43), 15 states have call predecessors, (43), 17 states have call successors, (43) Word has length 116 [2024-11-24 01:25:55,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:55,355 INFO L225 Difference]: With dead ends: 337 [2024-11-24 01:25:55,358 INFO L226 Difference]: Without dead ends: 136 [2024-11-24 01:25:55,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2024-11-24 01:25:55,363 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 185 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:55,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 2796 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 01:25:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-24 01:25:55,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2024-11-24 01:25:55,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 86 states have (on average 1.244186046511628) internal successors, (107), 88 states have internal predecessors, (107), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-24 01:25:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 184 transitions. [2024-11-24 01:25:55,380 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 184 transitions. Word has length 116 [2024-11-24 01:25:55,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:55,380 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 184 transitions. [2024-11-24 01:25:55,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 26 states have internal predecessors, (95), 17 states have call successors, (45), 4 states have call predecessors, (45), 9 states have return successors, (43), 15 states have call predecessors, (43), 17 states have call successors, (43) [2024-11-24 01:25:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 184 transitions. [2024-11-24 01:25:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-24 01:25:55,388 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:55,388 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:25:55,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 01:25:55,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:25:55,589 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:55,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:55,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1237912148, now seen corresponding path program 1 times [2024-11-24 01:25:55,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:55,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363489997] [2024-11-24 01:25:55,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:55,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-24 01:25:55,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:55,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363489997] [2024-11-24 01:25:55,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363489997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:25:55,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443193761] [2024-11-24 01:25:55,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:55,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:25:55,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:25:55,753 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:25:55,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:25:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:56,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:25:56,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:25:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-24 01:25:56,027 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:25:56,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443193761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:56,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:25:56,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-24 01:25:56,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339800060] [2024-11-24 01:25:56,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:56,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:25:56,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:56,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:25:56,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:25:56,030 INFO L87 Difference]: Start difference. First operand 135 states and 184 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:25:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:56,054 INFO L93 Difference]: Finished difference Result 250 states and 346 transitions. [2024-11-24 01:25:56,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:25:56,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2024-11-24 01:25:56,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:56,058 INFO L225 Difference]: With dead ends: 250 [2024-11-24 01:25:56,058 INFO L226 Difference]: Without dead ends: 136 [2024-11-24 01:25:56,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:25:56,060 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:56,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 350 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:25:56,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-24 01:25:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-24 01:25:56,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 89 states have internal predecessors, (108), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-24 01:25:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 185 transitions. [2024-11-24 01:25:56,077 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 185 transitions. Word has length 120 [2024-11-24 01:25:56,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:56,078 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 185 transitions. [2024-11-24 01:25:56,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:25:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 185 transitions. [2024-11-24 01:25:56,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-24 01:25:56,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:56,081 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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] [2024-11-24 01:25:56,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:25:56,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:25:56,282 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:56,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:56,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1007667306, now seen corresponding path program 1 times [2024-11-24 01:25:56,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:56,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840849974] [2024-11-24 01:25:56,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:56,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-24 01:25:56,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:56,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840849974] [2024-11-24 01:25:56,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840849974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:25:56,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820705518] [2024-11-24 01:25:56,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:56,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:25:56,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:25:56,728 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:25:56,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:25:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:57,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:25:57,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:25:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-24 01:25:57,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:25:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820705518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:57,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:25:57,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2024-11-24 01:25:57,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376763591] [2024-11-24 01:25:57,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:57,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:25:57,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:57,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:25:57,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:25:57,295 INFO L87 Difference]: Start difference. First operand 136 states and 185 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-24 01:25:57,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:57,791 INFO L93 Difference]: Finished difference Result 256 states and 350 transitions. [2024-11-24 01:25:57,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:25:57,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) Word has length 120 [2024-11-24 01:25:57,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:57,794 INFO L225 Difference]: With dead ends: 256 [2024-11-24 01:25:57,794 INFO L226 Difference]: Without dead ends: 138 [2024-11-24 01:25:57,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:25:57,796 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 204 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:57,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 900 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:25:57,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-24 01:25:57,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2024-11-24 01:25:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 89 states have internal predecessors, (107), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-24 01:25:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 184 transitions. [2024-11-24 01:25:57,813 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 184 transitions. Word has length 120 [2024-11-24 01:25:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:57,813 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 184 transitions. [2024-11-24 01:25:57,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-24 01:25:57,814 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 184 transitions. [2024-11-24 01:25:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-24 01:25:57,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:57,816 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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] [2024-11-24 01:25:57,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:25:58,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:25:58,021 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:58,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:58,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1735356124, now seen corresponding path program 1 times [2024-11-24 01:25:58,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:58,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663484195] [2024-11-24 01:25:58,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:58,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-24 01:25:58,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:58,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663484195] [2024-11-24 01:25:58,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663484195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:25:58,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155483523] [2024-11-24 01:25:58,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:58,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:25:58,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:25:58,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:25:58,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:25:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:58,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-24 01:25:58,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:25:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-24 01:25:58,991 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:25:58,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155483523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:58,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:25:58,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2024-11-24 01:25:58,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393169045] [2024-11-24 01:25:58,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:58,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:25:58,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:58,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:25:58,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:25:58,993 INFO L87 Difference]: Start difference. First operand 136 states and 184 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-24 01:25:59,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:59,626 INFO L93 Difference]: Finished difference Result 262 states and 358 transitions. [2024-11-24 01:25:59,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:25:59,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) Word has length 122 [2024-11-24 01:25:59,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:59,629 INFO L225 Difference]: With dead ends: 262 [2024-11-24 01:25:59,630 INFO L226 Difference]: Without dead ends: 143 [2024-11-24 01:25:59,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:25:59,635 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 218 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:59,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1013 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:25:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-24 01:25:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 137. [2024-11-24 01:25:59,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 90 states have internal predecessors, (108), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-24 01:25:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 185 transitions. [2024-11-24 01:25:59,662 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 185 transitions. Word has length 122 [2024-11-24 01:25:59,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:59,665 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 185 transitions. [2024-11-24 01:25:59,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-24 01:25:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 185 transitions. [2024-11-24 01:25:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-24 01:25:59,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:59,667 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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] [2024-11-24 01:25:59,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:25:59,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:25:59,868 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:59,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1938292629, now seen corresponding path program 1 times [2024-11-24 01:25:59,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:59,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481084003] [2024-11-24 01:25:59,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:59,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-24 01:26:00,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:26:00,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481084003] [2024-11-24 01:26:00,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481084003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:26:00,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568951098] [2024-11-24 01:26:00,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:00,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:26:00,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:26:00,458 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:26:00,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:26:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:00,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:26:00,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:26:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-24 01:26:00,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:26:00,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568951098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:26:00,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:26:00,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-24 01:26:00,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487679438] [2024-11-24 01:26:00,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:26:00,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:26:00,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:26:00,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:26:00,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:26:00,794 INFO L87 Difference]: Start difference. First operand 137 states and 185 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:26:00,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:26:00,825 INFO L93 Difference]: Finished difference Result 257 states and 353 transitions. [2024-11-24 01:26:00,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:26:00,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 123 [2024-11-24 01:26:00,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:26:00,828 INFO L225 Difference]: With dead ends: 257 [2024-11-24 01:26:00,828 INFO L226 Difference]: Without dead ends: 141 [2024-11-24 01:26:00,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:26:00,830 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 2 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:26:00,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 343 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:26:00,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-24 01:26:00,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2024-11-24 01:26:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 91 states have internal predecessors, (109), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-24 01:26:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 186 transitions. [2024-11-24 01:26:00,853 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 186 transitions. Word has length 123 [2024-11-24 01:26:00,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:26:00,854 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 186 transitions. [2024-11-24 01:26:00,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:26:00,855 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 186 transitions. [2024-11-24 01:26:00,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-24 01:26:00,857 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:26:00,857 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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] [2024-11-24 01:26:00,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:26:01,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-24 01:26:01,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:26:01,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:26:01,059 INFO L85 PathProgramCache]: Analyzing trace with hash 173108503, now seen corresponding path program 1 times [2024-11-24 01:26:01,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:26:01,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391877051] [2024-11-24 01:26:01,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:01,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:26:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-24 01:26:01,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:26:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391877051] [2024-11-24 01:26:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391877051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:26:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951957592] [2024-11-24 01:26:01,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:01,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:26:01,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:26:01,610 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:26:01,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:26:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:01,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-24 01:26:01,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:26:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-24 01:26:02,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:26:02,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951957592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:26:02,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:26:02,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 15 [2024-11-24 01:26:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261322268] [2024-11-24 01:26:02,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:26:02,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:26:02,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:26:02,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:26:02,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:26:02,227 INFO L87 Difference]: Start difference. First operand 138 states and 186 transitions. Second operand has 13 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-24 01:26:03,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:26:03,010 INFO L93 Difference]: Finished difference Result 255 states and 345 transitions. [2024-11-24 01:26:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:26:03,011 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 131 [2024-11-24 01:26:03,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:26:03,013 INFO L225 Difference]: With dead ends: 255 [2024-11-24 01:26:03,013 INFO L226 Difference]: Without dead ends: 141 [2024-11-24 01:26:03,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:26:03,015 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 175 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:26:03,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1448 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:26:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-24 01:26:03,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2024-11-24 01:26:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 92 states have internal predecessors, (110), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-24 01:26:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 187 transitions. [2024-11-24 01:26:03,029 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 187 transitions. Word has length 131 [2024-11-24 01:26:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:26:03,029 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 187 transitions. [2024-11-24 01:26:03,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-24 01:26:03,030 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 187 transitions. [2024-11-24 01:26:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-24 01:26:03,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:26:03,031 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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, 1, 1] [2024-11-24 01:26:03,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:26:03,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-24 01:26:03,236 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:26:03,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:26:03,237 INFO L85 PathProgramCache]: Analyzing trace with hash -881169819, now seen corresponding path program 1 times [2024-11-24 01:26:03,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:26:03,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110442002] [2024-11-24 01:26:03,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:03,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:26:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-24 01:26:04,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:26:04,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110442002] [2024-11-24 01:26:04,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110442002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:26:04,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859210691] [2024-11-24 01:26:04,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:04,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:26:04,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:26:04,518 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:26:04,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:26:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:04,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-24 01:26:04,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:26:04,933 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 13 treesize of output 1 [2024-11-24 01:26:04,939 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 13 treesize of output 1 [2024-11-24 01:26:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 105 proven. 10 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-24 01:26:06,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:26:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-24 01:26:07,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859210691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:26:07,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:26:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 12] total 31 [2024-11-24 01:26:07,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428936625] [2024-11-24 01:26:07,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:26:07,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-24 01:26:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:26:07,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-24 01:26:07,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2024-11-24 01:26:07,105 INFO L87 Difference]: Start difference. First operand 139 states and 187 transitions. Second operand has 31 states, 29 states have (on average 4.103448275862069) internal successors, (119), 30 states have internal predecessors, (119), 13 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) [2024-11-24 01:26:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:26:13,001 INFO L93 Difference]: Finished difference Result 482 states and 690 transitions. [2024-11-24 01:26:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-24 01:26:13,002 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 4.103448275862069) internal successors, (119), 30 states have internal predecessors, (119), 13 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) Word has length 133 [2024-11-24 01:26:13,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:26:13,007 INFO L225 Difference]: With dead ends: 482 [2024-11-24 01:26:13,007 INFO L226 Difference]: Without dead ends: 364 [2024-11-24 01:26:13,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 255 SyntacticMatches, 6 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=560, Invalid=4410, Unknown=0, NotChecked=0, Total=4970 [2024-11-24 01:26:13,011 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 429 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 2936 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 3281 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 2936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:26:13,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 3281 Invalid, 3234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 2936 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-24 01:26:13,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-24 01:26:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 309. [2024-11-24 01:26:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 214 states have (on average 1.2616822429906542) internal successors, (270), 219 states have internal predecessors, (270), 71 states have call successors, (71), 20 states have call predecessors, (71), 23 states have return successors, (87), 69 states have call predecessors, (87), 69 states have call successors, (87) [2024-11-24 01:26:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 428 transitions. [2024-11-24 01:26:13,060 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 428 transitions. Word has length 133 [2024-11-24 01:26:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:26:13,061 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 428 transitions. [2024-11-24 01:26:13,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 4.103448275862069) internal successors, (119), 30 states have internal predecessors, (119), 13 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) [2024-11-24 01:26:13,061 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 428 transitions. [2024-11-24 01:26:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-24 01:26:13,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:26:13,064 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:26:13,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:26:13,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-24 01:26:13,265 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:26:13,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:26:13,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1646702988, now seen corresponding path program 1 times [2024-11-24 01:26:13,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:26:13,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617229818] [2024-11-24 01:26:13,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:13,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:26:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-11-24 01:26:13,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:26:13,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617229818] [2024-11-24 01:26:13,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617229818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:26:13,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948617703] [2024-11-24 01:26:13,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:13,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:26:13,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:26:13,754 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:26:13,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:26:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:14,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-24 01:26:14,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:26:14,163 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 [2024-11-24 01:26:14,494 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-24 01:26:14,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:26:14,502 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 16 treesize of output 11 [2024-11-24 01:26:14,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:26:14,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2024-11-24 01:26:14,610 INFO L349 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2024-11-24 01:26:14,610 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 97 [2024-11-24 01:26:14,617 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 0 case distinctions, treesize of input 77 treesize of output 63 [2024-11-24 01:26:14,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:26:14,627 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 21 treesize of output 1 [2024-11-24 01:26:14,776 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| Int)) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|))) (let ((.cse0 (select .cse1 24))) (let ((.cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| v_DerPreprocessor_4) .cse0))) (and (= .cse0 (select .cse1 0)) (= .cse2 (select |c_#memory_$Pointer$#2.base| .cse0)) (<= (+ .cse0 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|) (= (store .cse2 24 .cse0) v_DerPreprocessor_4)))))) is different from true [2024-11-24 01:26:15,085 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30| Int)) (let ((.cse2 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30|))) (let ((.cse1 (select .cse2 24))) (let ((.cse0 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30| v_DerPreprocessor_4) .cse1))) (and (= (store .cse0 24 .cse1) v_DerPreprocessor_4) (<= (+ .cse1 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30|) (= .cse0 (select |c_#memory_$Pointer$#2.base| .cse1)) (= .cse1 (select .cse2 0))))))) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| Int)) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|))) (let ((.cse3 (select .cse4 24))) (let ((.cse5 (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_5) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| v_DerPreprocessor_6) .cse3))) (and (= .cse3 (select .cse4 0)) (= v_DerPreprocessor_6 (store .cse5 24 .cse3)) (<= (+ .cse3 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|) (= (select |c_#memory_$Pointer$#2.base| .cse3) .cse5))))))) is different from true [2024-11-24 01:26:15,734 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((v_DerPreprocessor_10 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31| Int) (v_DerPreprocessor_9 (Array Int Int))) (let ((.cse0 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31|))) (let ((.cse1 (select .cse0 24))) (let ((.cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_9) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31| v_DerPreprocessor_10) .cse1))) (and (= (select .cse0 0) .cse1) (= v_DerPreprocessor_10 (store .cse2 24 .cse1)) (<= (+ 2 .cse1) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31|) (= (select |c_#memory_$Pointer$#2.base| .cse1) .cse2)))))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23| Int)) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23|))) (let ((.cse4 (select .cse5 24))) (let ((.cse3 (select (store (store |c_#memory_$Pointer$#2.base| .cse4 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23| v_DerPreprocessor_4) .cse4))) (and (= .cse3 (select |c_#memory_$Pointer$#2.base| .cse4)) (<= (+ .cse4 2) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23|) (= .cse4 (select .cse5 0)) (= (store .cse3 24 .cse4) v_DerPreprocessor_4)))))) (exists ((v_DerPreprocessor_7 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30| Int) (v_DerPreprocessor_8 (Array Int Int))) (let ((.cse8 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30|))) (let ((.cse7 (select .cse8 24))) (let ((.cse6 (select (store (store |c_#memory_$Pointer$#2.base| .cse7 v_DerPreprocessor_7) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30| v_DerPreprocessor_8) .cse7))) (and (= .cse6 (select |c_#memory_$Pointer$#2.base| .cse7)) (<= (+ .cse7 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30|) (= v_DerPreprocessor_8 (store .cse6 24 .cse7)) (= .cse7 (select .cse8 0))))))) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| Int)) (let ((.cse10 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|))) (let ((.cse9 (select .cse10 24))) (let ((.cse11 (select (store (store |c_#memory_$Pointer$#2.base| .cse9 v_DerPreprocessor_5) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| v_DerPreprocessor_6) .cse9))) (and (= .cse9 (select .cse10 0)) (= v_DerPreprocessor_6 (store .cse11 24 .cse9)) (<= (+ .cse9 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|) (= (select |c_#memory_$Pointer$#2.base| .cse9) .cse11))))))) is different from true [2024-11-24 01:26:16,737 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((v_DerPreprocessor_10 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31| Int) (v_DerPreprocessor_9 (Array Int Int))) (let ((.cse0 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31|))) (let ((.cse1 (select .cse0 24))) (let ((.cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_9) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31| v_DerPreprocessor_10) .cse1))) (and (= (select .cse0 0) .cse1) (= v_DerPreprocessor_10 (store .cse2 24 .cse1)) (<= (+ 2 .cse1) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31|) (= (select |c_#memory_$Pointer$#2.base| .cse1) .cse2)))))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23| Int)) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23|))) (let ((.cse4 (select .cse5 24))) (let ((.cse3 (select (store (store |c_#memory_$Pointer$#2.base| .cse4 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23| v_DerPreprocessor_4) .cse4))) (and (= .cse3 (select |c_#memory_$Pointer$#2.base| .cse4)) (<= (+ .cse4 2) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23|) (= .cse4 (select .cse5 0)) (= (store .cse3 24 .cse4) v_DerPreprocessor_4)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24| Int) (v_DerPreprocessor_11 (Array Int Int)) (v_DerPreprocessor_12 (Array Int Int))) (let ((.cse8 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24|))) (let ((.cse7 (select .cse8 24))) (let ((.cse6 (select (store (store |c_#memory_$Pointer$#2.base| .cse7 v_DerPreprocessor_11) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24| v_DerPreprocessor_12) .cse7))) (and (= v_DerPreprocessor_12 (store .cse6 24 .cse7)) (<= (+ 2 .cse7) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24|) (= .cse6 (select |c_#memory_$Pointer$#2.base| .cse7)) (= (select .cse8 0) .cse7)))))) (exists ((v_DerPreprocessor_7 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30| Int) (v_DerPreprocessor_8 (Array Int Int))) (let ((.cse11 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30|))) (let ((.cse10 (select .cse11 24))) (let ((.cse9 (select (store (store |c_#memory_$Pointer$#2.base| .cse10 v_DerPreprocessor_7) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30| v_DerPreprocessor_8) .cse10))) (and (= .cse9 (select |c_#memory_$Pointer$#2.base| .cse10)) (<= (+ .cse10 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30|) (= v_DerPreprocessor_8 (store .cse9 24 .cse10)) (= .cse10 (select .cse11 0))))))) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| Int)) (let ((.cse13 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|))) (let ((.cse12 (select .cse13 24))) (let ((.cse14 (select (store (store |c_#memory_$Pointer$#2.base| .cse12 v_DerPreprocessor_5) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| v_DerPreprocessor_6) .cse12))) (and (= .cse12 (select .cse13 0)) (= v_DerPreprocessor_6 (store .cse14 24 .cse12)) (<= (+ .cse12 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|) (= (select |c_#memory_$Pointer$#2.base| .cse12) .cse14))))))) is different from true [2024-11-24 01:26:17,539 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((v_DerPreprocessor_10 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31| Int) (v_DerPreprocessor_9 (Array Int Int))) (let ((.cse0 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31|))) (let ((.cse1 (select .cse0 24))) (let ((.cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_9) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31| v_DerPreprocessor_10) .cse1))) (and (= (select .cse0 0) .cse1) (= v_DerPreprocessor_10 (store .cse2 24 .cse1)) (<= (+ 2 .cse1) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31|) (= (select |c_#memory_$Pointer$#2.base| .cse1) .cse2)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_25| Int) (v_DerPreprocessor_13 (Array Int Int)) (v_DerPreprocessor_14 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_25|))) (let ((.cse3 (select .cse4 24))) (let ((.cse5 (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_13) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_25| v_DerPreprocessor_14) .cse3))) (and (= .cse3 (select .cse4 0)) (<= (+ 2 .cse3) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_25|) (= (select |c_#memory_$Pointer$#2.base| .cse3) .cse5) (= (store .cse5 24 .cse3) v_DerPreprocessor_14)))))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23| Int)) (let ((.cse8 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23|))) (let ((.cse7 (select .cse8 24))) (let ((.cse6 (select (store (store |c_#memory_$Pointer$#2.base| .cse7 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23| v_DerPreprocessor_4) .cse7))) (and (= .cse6 (select |c_#memory_$Pointer$#2.base| .cse7)) (<= (+ .cse7 2) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23|) (= .cse7 (select .cse8 0)) (= (store .cse6 24 .cse7) v_DerPreprocessor_4)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24| Int) (v_DerPreprocessor_11 (Array Int Int)) (v_DerPreprocessor_12 (Array Int Int))) (let ((.cse11 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24|))) (let ((.cse10 (select .cse11 24))) (let ((.cse9 (select (store (store |c_#memory_$Pointer$#2.base| .cse10 v_DerPreprocessor_11) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24| v_DerPreprocessor_12) .cse10))) (and (= v_DerPreprocessor_12 (store .cse9 24 .cse10)) (<= (+ 2 .cse10) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24|) (= .cse9 (select |c_#memory_$Pointer$#2.base| .cse10)) (= (select .cse11 0) .cse10)))))) (exists ((v_DerPreprocessor_7 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30| Int) (v_DerPreprocessor_8 (Array Int Int))) (let ((.cse14 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30|))) (let ((.cse13 (select .cse14 24))) (let ((.cse12 (select (store (store |c_#memory_$Pointer$#2.base| .cse13 v_DerPreprocessor_7) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30| v_DerPreprocessor_8) .cse13))) (and (= .cse12 (select |c_#memory_$Pointer$#2.base| .cse13)) (<= (+ .cse13 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30|) (= v_DerPreprocessor_8 (store .cse12 24 .cse13)) (= .cse13 (select .cse14 0))))))) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| Int)) (let ((.cse16 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|))) (let ((.cse15 (select .cse16 24))) (let ((.cse17 (select (store (store |c_#memory_$Pointer$#2.base| .cse15 v_DerPreprocessor_5) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| v_DerPreprocessor_6) .cse15))) (and (= .cse15 (select .cse16 0)) (= v_DerPreprocessor_6 (store .cse17 24 .cse15)) (<= (+ .cse15 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|) (= (select |c_#memory_$Pointer$#2.base| .cse15) .cse17))))))) is different from true [2024-11-24 01:26:19,014 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((v_DerPreprocessor_10 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31| Int) (v_DerPreprocessor_9 (Array Int Int))) (let ((.cse0 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31|))) (let ((.cse1 (select .cse0 24))) (let ((.cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_9) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31| v_DerPreprocessor_10) .cse1))) (and (= (select .cse0 0) .cse1) (= v_DerPreprocessor_10 (store .cse2 24 .cse1)) (<= (+ 2 .cse1) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31|) (= (select |c_#memory_$Pointer$#2.base| .cse1) .cse2)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_26| Int) (v_DerPreprocessor_15 (Array Int Int)) (v_DerPreprocessor_16 (Array Int Int))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_26|))) (let ((.cse4 (select .cse5 24))) (let ((.cse3 (select (store (store |c_#memory_$Pointer$#2.base| .cse4 v_DerPreprocessor_15) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_26| v_DerPreprocessor_16) .cse4))) (and (= v_DerPreprocessor_16 (store .cse3 24 .cse4)) (= (select .cse5 0) .cse4) (<= (+ 2 .cse4) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_26|) (= (select |c_#memory_$Pointer$#2.base| .cse4) .cse3)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_25| Int) (v_DerPreprocessor_13 (Array Int Int)) (v_DerPreprocessor_14 (Array Int Int))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_25|))) (let ((.cse6 (select .cse7 24))) (let ((.cse8 (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_13) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_25| v_DerPreprocessor_14) .cse6))) (and (= .cse6 (select .cse7 0)) (<= (+ 2 .cse6) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_25|) (= (select |c_#memory_$Pointer$#2.base| .cse6) .cse8) (= (store .cse8 24 .cse6) v_DerPreprocessor_14)))))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23| Int)) (let ((.cse11 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23|))) (let ((.cse10 (select .cse11 24))) (let ((.cse9 (select (store (store |c_#memory_$Pointer$#2.base| .cse10 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23| v_DerPreprocessor_4) .cse10))) (and (= .cse9 (select |c_#memory_$Pointer$#2.base| .cse10)) (<= (+ .cse10 2) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23|) (= .cse10 (select .cse11 0)) (= (store .cse9 24 .cse10) v_DerPreprocessor_4)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24| Int) (v_DerPreprocessor_11 (Array Int Int)) (v_DerPreprocessor_12 (Array Int Int))) (let ((.cse14 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24|))) (let ((.cse13 (select .cse14 24))) (let ((.cse12 (select (store (store |c_#memory_$Pointer$#2.base| .cse13 v_DerPreprocessor_11) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24| v_DerPreprocessor_12) .cse13))) (and (= v_DerPreprocessor_12 (store .cse12 24 .cse13)) (<= (+ 2 .cse13) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24|) (= .cse12 (select |c_#memory_$Pointer$#2.base| .cse13)) (= (select .cse14 0) .cse13)))))) (exists ((v_DerPreprocessor_7 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30| Int) (v_DerPreprocessor_8 (Array Int Int))) (let ((.cse17 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30|))) (let ((.cse16 (select .cse17 24))) (let ((.cse15 (select (store (store |c_#memory_$Pointer$#2.base| .cse16 v_DerPreprocessor_7) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30| v_DerPreprocessor_8) .cse16))) (and (= .cse15 (select |c_#memory_$Pointer$#2.base| .cse16)) (<= (+ .cse16 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30|) (= v_DerPreprocessor_8 (store .cse15 24 .cse16)) (= .cse16 (select .cse17 0))))))) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| Int)) (let ((.cse19 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|))) (let ((.cse18 (select .cse19 24))) (let ((.cse20 (select (store (store |c_#memory_$Pointer$#2.base| .cse18 v_DerPreprocessor_5) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| v_DerPreprocessor_6) .cse18))) (and (= .cse18 (select .cse19 0)) (= v_DerPreprocessor_6 (store .cse20 24 .cse18)) (<= (+ .cse18 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|) (= (select |c_#memory_$Pointer$#2.base| .cse18) .cse20))))))) is different from true [2024-11-24 01:26:20,628 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((v_DerPreprocessor_10 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31| Int) (v_DerPreprocessor_9 (Array Int Int))) (let ((.cse0 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31|))) (let ((.cse1 (select .cse0 24))) (let ((.cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_9) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31| v_DerPreprocessor_10) .cse1))) (and (= (select .cse0 0) .cse1) (= v_DerPreprocessor_10 (store .cse2 24 .cse1)) (<= (+ 2 .cse1) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_31|) (= (select |c_#memory_$Pointer$#2.base| .cse1) .cse2)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_26| Int) (v_DerPreprocessor_15 (Array Int Int)) (v_DerPreprocessor_16 (Array Int Int))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_26|))) (let ((.cse4 (select .cse5 24))) (let ((.cse3 (select (store (store |c_#memory_$Pointer$#2.base| .cse4 v_DerPreprocessor_15) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_26| v_DerPreprocessor_16) .cse4))) (and (= v_DerPreprocessor_16 (store .cse3 24 .cse4)) (= (select .cse5 0) .cse4) (<= (+ 2 .cse4) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_26|) (= (select |c_#memory_$Pointer$#2.base| .cse4) .cse3)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_25| Int) (v_DerPreprocessor_13 (Array Int Int)) (v_DerPreprocessor_14 (Array Int Int))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_25|))) (let ((.cse6 (select .cse7 24))) (let ((.cse8 (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_13) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_25| v_DerPreprocessor_14) .cse6))) (and (= .cse6 (select .cse7 0)) (<= (+ 2 .cse6) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_25|) (= (select |c_#memory_$Pointer$#2.base| .cse6) .cse8) (= (store .cse8 24 .cse6) v_DerPreprocessor_14)))))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23| Int)) (let ((.cse11 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23|))) (let ((.cse10 (select .cse11 24))) (let ((.cse9 (select (store (store |c_#memory_$Pointer$#2.base| .cse10 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23| v_DerPreprocessor_4) .cse10))) (and (= .cse9 (select |c_#memory_$Pointer$#2.base| .cse10)) (<= (+ .cse10 2) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_23|) (= .cse10 (select .cse11 0)) (= (store .cse9 24 .cse10) v_DerPreprocessor_4)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24| Int) (v_DerPreprocessor_11 (Array Int Int)) (v_DerPreprocessor_12 (Array Int Int))) (let ((.cse14 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24|))) (let ((.cse13 (select .cse14 24))) (let ((.cse12 (select (store (store |c_#memory_$Pointer$#2.base| .cse13 v_DerPreprocessor_11) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24| v_DerPreprocessor_12) .cse13))) (and (= v_DerPreprocessor_12 (store .cse12 24 .cse13)) (<= (+ 2 .cse13) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_24|) (= .cse12 (select |c_#memory_$Pointer$#2.base| .cse13)) (= (select .cse14 0) .cse13)))))) (exists ((v_DerPreprocessor_7 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30| Int) (v_DerPreprocessor_8 (Array Int Int))) (let ((.cse17 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30|))) (let ((.cse16 (select .cse17 24))) (let ((.cse15 (select (store (store |c_#memory_$Pointer$#2.base| .cse16 v_DerPreprocessor_7) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30| v_DerPreprocessor_8) .cse16))) (and (= .cse15 (select |c_#memory_$Pointer$#2.base| .cse16)) (<= (+ .cse16 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_30|) (= v_DerPreprocessor_8 (store .cse15 24 .cse16)) (= .cse16 (select .cse17 0))))))) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| Int)) (let ((.cse19 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|))) (let ((.cse18 (select .cse19 24))) (let ((.cse20 (select (store (store |c_#memory_$Pointer$#2.base| .cse18 v_DerPreprocessor_5) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29| v_DerPreprocessor_6) .cse18))) (and (= .cse18 (select .cse19 0)) (= v_DerPreprocessor_6 (store .cse20 24 .cse18)) (<= (+ .cse18 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_29|) (= (select |c_#memory_$Pointer$#2.base| .cse18) .cse20)))))) (exists ((v_DerPreprocessor_17 (Array Int Int)) (v_DerPreprocessor_18 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_front_~list#1.base_BEFORE_CALL_22| Int)) (let ((.cse23 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_~list#1.base_BEFORE_CALL_22|))) (let ((.cse21 (select .cse23 24))) (let ((.cse22 (select (store (store |c_#memory_$Pointer$#2.base| .cse21 v_DerPreprocessor_17) |v_ULTIMATE.start_aws_linked_list_front_~list#1.base_BEFORE_CALL_22| v_DerPreprocessor_18) .cse21))) (and (<= (+ .cse21 2) |v_ULTIMATE.start_aws_linked_list_front_~list#1.base_BEFORE_CALL_22|) (= v_DerPreprocessor_18 (store .cse22 24 .cse21)) (= .cse22 (select |c_#memory_$Pointer$#2.base| .cse21)) (= .cse21 (select .cse23 0)))))))) is different from true [2024-11-24 01:26:26,341 INFO L349 Elim1Store]: treesize reduction 1224, result has 0.1 percent of original size [2024-11-24 01:26:26,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 27 new quantified variables, introduced 153 case distinctions, treesize of input 845 treesize of output 618 [2024-11-24 01:26:26,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 20 treesize of output 12 [2024-11-24 01:26:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 104 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 76 not checked. [2024-11-24 01:26:26,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:26:27,828 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 64 treesize of output 60 [2024-11-24 01:26:27,832 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 6 [2024-11-24 01:26:27,841 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 6 [2024-11-24 01:26:27,847 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 6 [2024-11-24 01:26:28,028 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:26:28,028 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 33 [2024-11-24 01:26:28,053 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:26:28,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 426 treesize of output 378 [2024-11-24 01:26:28,067 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 192 treesize of output 184 [2024-11-24 01:26:28,255 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 26 treesize of output 24 [2024-11-24 01:26:28,293 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 6 treesize of output 4 [2024-11-24 01:26:28,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:26:28,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 76 [2024-11-24 01:26:28,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948617703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:26:28,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:26:28,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 28] total 32 [2024-11-24 01:26:28,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672012283] [2024-11-24 01:26:28,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:26:28,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-24 01:26:28,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:26:28,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-24 01:26:28,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1123, Unknown=34, NotChecked=518, Total=1806 [2024-11-24 01:26:28,989 INFO L87 Difference]: Start difference. First operand 309 states and 428 transitions. Second operand has 32 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 14 states have call successors, (33), 10 states have call predecessors, (33), 13 states have return successors, (32), 13 states have call predecessors, (32), 14 states have call successors, (32) [2024-11-24 01:26:40,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:26:40,939 INFO L93 Difference]: Finished difference Result 646 states and 882 transitions. [2024-11-24 01:26:40,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-24 01:26:40,939 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 14 states have call successors, (33), 10 states have call predecessors, (33), 13 states have return successors, (32), 13 states have call predecessors, (32), 14 states have call successors, (32) Word has length 134 [2024-11-24 01:26:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:26:40,943 INFO L225 Difference]: With dead ends: 646 [2024-11-24 01:26:40,944 INFO L226 Difference]: Without dead ends: 365 [2024-11-24 01:26:40,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 219 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=331, Invalid=3638, Unknown=219, NotChecked=924, Total=5112 [2024-11-24 01:26:40,947 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 188 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 22 mSolverCounterUnsat, 41 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 41 IncrementalHoareTripleChecker+Unknown, 1667 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:26:40,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 2667 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1079 Invalid, 41 Unknown, 1667 Unchecked, 4.7s Time] [2024-11-24 01:26:40,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-24 01:26:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 358. [2024-11-24 01:26:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 248 states have (on average 1.2419354838709677) internal successors, (308), 255 states have internal predecessors, (308), 78 states have call successors, (78), 27 states have call predecessors, (78), 31 states have return successors, (102), 75 states have call predecessors, (102), 76 states have call successors, (102) [2024-11-24 01:26:41,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 488 transitions. [2024-11-24 01:26:41,042 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 488 transitions. Word has length 134 [2024-11-24 01:26:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:26:41,043 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 488 transitions. [2024-11-24 01:26:41,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 14 states have call successors, (33), 10 states have call predecessors, (33), 13 states have return successors, (32), 13 states have call predecessors, (32), 14 states have call successors, (32) [2024-11-24 01:26:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 488 transitions. [2024-11-24 01:26:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-24 01:26:41,047 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:26:41,048 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:26:41,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 01:26:41,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 01:26:41,249 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:26:41,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:26:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash -885163745, now seen corresponding path program 1 times [2024-11-24 01:26:41,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:26:41,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089310539] [2024-11-24 01:26:41,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:41,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:26:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-24 01:26:42,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:26:42,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089310539] [2024-11-24 01:26:42,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089310539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:26:42,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633224306] [2024-11-24 01:26:42,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:42,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:26:42,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:26:42,022 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:26:42,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:26:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:42,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-24 01:26:42,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:26:42,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:26:42,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:26:42,832 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 18 treesize of output 18 [2024-11-24 01:26:42,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:26:42,841 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 13 treesize of output 1 [2024-11-24 01:26:42,849 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 12 treesize of output 1 [2024-11-24 01:26:46,899 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_36| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_36|) (<= (+ (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_36|) 24) 2) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_36|))) is different from true [2024-11-24 01:26:51,009 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_37| Int)) (and (<= (+ 2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_37|) 24)) |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_37|) (<= 2 |v_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base_BEFORE_CALL_37|))) is different from true [2024-11-24 01:26:55,106 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_31| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_31|) (<= (+ 2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_31|) 24)) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_31|))) is different from true [2024-11-24 01:26:59,215 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_32| Int)) (and (<= (+ 2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_32|) 24)) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_32|) (<= 2 |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_32|))) is different from true [2024-11-24 01:27:03,303 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_33| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_33|) (<= (+ 2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_33|) 24)) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_33|))) is different from true [2024-11-24 01:27:07,610 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_34| Int)) (and (<= (+ (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_34|) 24) 2) |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_34|) (<= 2 |v_ULTIMATE.start_aws_linked_list_pop_front_~list#1.base_BEFORE_CALL_34|))) is different from true [2024-11-24 01:27:11,722 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_front_~list#1.base_BEFORE_CALL_25| Int)) (and (<= (+ (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_~list#1.base_BEFORE_CALL_25|) 24) 2) |v_ULTIMATE.start_aws_linked_list_front_~list#1.base_BEFORE_CALL_25|) (<= 2 |v_ULTIMATE.start_aws_linked_list_front_~list#1.base_BEFORE_CALL_25|))) is different from true [2024-11-24 01:27:44,937 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 7 treesize of output 3 [2024-11-24 01:27:44,947 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-24 01:27:44,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2024-11-24 01:27:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 107 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 88 not checked. [2024-11-24 01:27:44,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:27:49,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633224306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:27:49,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:27:49,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 25] total 31 [2024-11-24 01:27:49,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991920873] [2024-11-24 01:27:49,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:27:49,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-24 01:27:49,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:49,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-24 01:27:49,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=543, Unknown=16, NotChecked=364, Total=992 [2024-11-24 01:27:49,453 INFO L87 Difference]: Start difference. First operand 358 states and 488 transitions. Second operand has 31 states, 29 states have (on average 5.344827586206897) internal successors, (155), 27 states have internal predecessors, (155), 11 states have call successors, (34), 10 states have call predecessors, (34), 14 states have return successors, (33), 10 states have call predecessors, (33), 11 states have call successors, (33) [2024-11-24 01:27:53,496 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] [2024-11-24 01:27:57,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:28:01,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:28:05,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:28:17,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:28:21,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:28:29,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:28:33,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:31:08,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:31:32,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:31:36,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:31:40,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:32:17,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:32:21,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:32:25,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:32:29,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:32:33,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:32:37,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:32:41,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:32:45,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:32:49,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:32:53,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:32:57,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:10,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:14,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:18,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:22,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:26,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:30,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:34,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:38,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:42,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:46,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:50,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:54,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:33:58,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:34:02,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:34:06,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:34:10,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:34:14,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:34:18,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:34:22,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:34:26,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:34:30,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:34:34,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:34:38,870 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] [2024-11-24 01:34:38,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:38,929 INFO L93 Difference]: Finished difference Result 819 states and 1103 transitions. [2024-11-24 01:34:38,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-24 01:34:38,930 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 5.344827586206897) internal successors, (155), 27 states have internal predecessors, (155), 11 states have call successors, (34), 10 states have call predecessors, (34), 14 states have return successors, (33), 10 states have call predecessors, (33), 11 states have call successors, (33) Word has length 147 [2024-11-24 01:34:38,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:38,935 INFO L225 Difference]: With dead ends: 819 [2024-11-24 01:34:38,935 INFO L226 Difference]: Without dead ends: 487 [2024-11-24 01:34:38,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 155 SyntacticMatches, 21 SemanticMatches, 59 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 287.2s TimeCoverageRelationStatistics Valid=261, Invalid=2598, Unknown=31, NotChecked=770, Total=3660 [2024-11-24 01:34:38,939 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 230 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 92 mSolverCounterUnsat, 46 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 46 IncrementalHoareTripleChecker+Unknown, 1755 IncrementalHoareTripleChecker+Unchecked, 187.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:38,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 2182 Invalid, 3454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1561 Invalid, 46 Unknown, 1755 Unchecked, 187.4s Time] [2024-11-24 01:34:38,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-11-24 01:34:39,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 462. [2024-11-24 01:34:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 339 states have (on average 1.233038348082596) internal successors, (418), 347 states have internal predecessors, (418), 85 states have call successors, (85), 34 states have call predecessors, (85), 37 states have return successors, (99), 80 states have call predecessors, (99), 83 states have call successors, (99) [2024-11-24 01:34:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 602 transitions. [2024-11-24 01:34:39,040 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 602 transitions. Word has length 147 [2024-11-24 01:34:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:39,041 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 602 transitions. [2024-11-24 01:34:39,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 5.344827586206897) internal successors, (155), 27 states have internal predecessors, (155), 11 states have call successors, (34), 10 states have call predecessors, (34), 14 states have return successors, (33), 10 states have call predecessors, (33), 11 states have call successors, (33) [2024-11-24 01:34:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 602 transitions. [2024-11-24 01:34:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-24 01:34:39,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:39,044 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:39,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-24 01:34:39,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-24 01:34:39,245 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:39,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:39,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1457967482, now seen corresponding path program 1 times [2024-11-24 01:34:39,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:39,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280208215] [2024-11-24 01:34:39,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:39,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-11-24 01:34:39,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:39,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280208215] [2024-11-24 01:34:39,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280208215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:39,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115399255] [2024-11-24 01:34:39,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:39,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:39,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:39,596 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:39,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:34:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:40,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:34:40,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-24 01:34:40,061 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:34:40,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115399255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:40,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:34:40,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-24 01:34:40,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576404798] [2024-11-24 01:34:40,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:40,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:34:40,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:40,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:34:40,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:34:40,063 INFO L87 Difference]: Start difference. First operand 462 states and 602 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:34:40,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:40,167 INFO L93 Difference]: Finished difference Result 867 states and 1162 transitions. [2024-11-24 01:34:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:34:40,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2024-11-24 01:34:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:40,171 INFO L225 Difference]: With dead ends: 867 [2024-11-24 01:34:40,172 INFO L226 Difference]: Without dead ends: 472 [2024-11-24 01:34:40,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:34:40,175 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:40,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:34:40,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-11-24 01:34:40,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 468. [2024-11-24 01:34:40,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 345 states have (on average 1.2115942028985507) internal successors, (418), 353 states have internal predecessors, (418), 85 states have call successors, (85), 34 states have call predecessors, (85), 37 states have return successors, (99), 80 states have call predecessors, (99), 83 states have call successors, (99) [2024-11-24 01:34:40,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 602 transitions. [2024-11-24 01:34:40,282 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 602 transitions. Word has length 150 [2024-11-24 01:34:40,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:40,282 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 602 transitions. [2024-11-24 01:34:40,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:34:40,283 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 602 transitions. [2024-11-24 01:34:40,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-24 01:34:40,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:40,286 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:40,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-24 01:34:40,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-24 01:34:40,487 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:40,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1318795004, now seen corresponding path program 1 times [2024-11-24 01:34:40,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:40,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128822728] [2024-11-24 01:34:40,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:40,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-11-24 01:34:40,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:40,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128822728] [2024-11-24 01:34:40,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128822728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:40,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662021017] [2024-11-24 01:34:40,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:40,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:40,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:40,655 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:40,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:34:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:41,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:34:41,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-24 01:34:41,143 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:34:41,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662021017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:41,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:34:41,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-24 01:34:41,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466225990] [2024-11-24 01:34:41,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:41,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:34:41,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:41,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:34:41,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:34:41,145 INFO L87 Difference]: Start difference. First operand 468 states and 602 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:34:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:41,206 INFO L93 Difference]: Finished difference Result 644 states and 847 transitions. [2024-11-24 01:34:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:34:41,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2024-11-24 01:34:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:41,210 INFO L225 Difference]: With dead ends: 644 [2024-11-24 01:34:41,210 INFO L226 Difference]: Without dead ends: 237 [2024-11-24 01:34:41,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:34:41,215 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:41,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:34:41,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-24 01:34:41,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 233. [2024-11-24 01:34:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 162 states have (on average 1.1790123456790123) internal successors, (191), 166 states have internal predecessors, (191), 48 states have call successors, (48), 21 states have call predecessors, (48), 22 states have return successors, (54), 45 states have call predecessors, (54), 47 states have call successors, (54) [2024-11-24 01:34:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2024-11-24 01:34:41,260 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 150 [2024-11-24 01:34:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:41,260 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2024-11-24 01:34:41,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:34:41,261 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2024-11-24 01:34:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-24 01:34:41,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:41,264 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:34:41,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 01:34:41,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-24 01:34:41,465 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:41,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:41,466 INFO L85 PathProgramCache]: Analyzing trace with hash -25503476, now seen corresponding path program 2 times [2024-11-24 01:34:41,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:41,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683929892] [2024-11-24 01:34:41,466 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:34:41,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:41,570 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:34:41,571 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:34:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-24 01:34:42,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:42,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683929892] [2024-11-24 01:34:42,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683929892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:42,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874730138] [2024-11-24 01:34:42,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:34:42,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:42,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:42,466 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:42,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:34:42,978 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:34:42,978 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:34:42,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-24 01:34:42,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:43,075 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 8 treesize of output 1 [2024-11-24 01:34:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 154 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-24 01:34:43,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:34:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-24 01:34:44,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874730138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:34:44,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:34:44,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 8] total 23 [2024-11-24 01:34:44,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51590157] [2024-11-24 01:34:44,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:34:44,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 01:34:44,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:44,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 01:34:44,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:34:44,161 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand has 23 states, 22 states have (on average 5.090909090909091) internal successors, (112), 21 states have internal predecessors, (112), 8 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35) [2024-11-24 01:34:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:45,954 INFO L93 Difference]: Finished difference Result 452 states and 596 transitions. [2024-11-24 01:34:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-24 01:34:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.090909090909091) internal successors, (112), 21 states have internal predecessors, (112), 8 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35) Word has length 172 [2024-11-24 01:34:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:45,958 INFO L225 Difference]: With dead ends: 452 [2024-11-24 01:34:45,958 INFO L226 Difference]: Without dead ends: 280 [2024-11-24 01:34:45,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 01:34:45,961 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 113 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:45,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 2279 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 01:34:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-24 01:34:46,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 241. [2024-11-24 01:34:46,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 168 states have (on average 1.1726190476190477) internal successors, (197), 173 states have internal predecessors, (197), 48 states have call successors, (48), 21 states have call predecessors, (48), 24 states have return successors, (61), 46 states have call predecessors, (61), 47 states have call successors, (61) [2024-11-24 01:34:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 306 transitions. [2024-11-24 01:34:46,016 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 306 transitions. Word has length 172 [2024-11-24 01:34:46,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:46,016 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 306 transitions. [2024-11-24 01:34:46,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.090909090909091) internal successors, (112), 21 states have internal predecessors, (112), 8 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35) [2024-11-24 01:34:46,017 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 306 transitions. [2024-11-24 01:34:46,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-24 01:34:46,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:46,020 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:34:46,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 01:34:46,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 01:34:46,221 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:46,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:46,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1885158280, now seen corresponding path program 1 times [2024-11-24 01:34:46,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:46,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266895702] [2024-11-24 01:34:46,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:46,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 15 proven. 36 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-24 01:34:47,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:47,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266895702] [2024-11-24 01:34:47,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266895702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:47,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732907932] [2024-11-24 01:34:47,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:47,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:47,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:47,436 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:47,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 01:34:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:48,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-24 01:34:48,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-24 01:34:48,370 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:34:48,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732907932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:48,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:34:48,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 15 [2024-11-24 01:34:48,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786024044] [2024-11-24 01:34:48,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:48,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:34:48,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:48,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:34:48,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:34:48,374 INFO L87 Difference]: Start difference. First operand 241 states and 306 transitions. Second operand has 12 states, 10 states have (on average 7.6) internal successors, (76), 11 states have internal predecessors, (76), 7 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-24 01:34:49,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:49,144 INFO L93 Difference]: Finished difference Result 381 states and 494 transitions. [2024-11-24 01:34:49,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:34:49,144 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.6) internal successors, (76), 11 states have internal predecessors, (76), 7 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) Word has length 172 [2024-11-24 01:34:49,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:49,147 INFO L225 Difference]: With dead ends: 381 [2024-11-24 01:34:49,147 INFO L226 Difference]: Without dead ends: 245 [2024-11-24 01:34:49,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:34:49,151 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 179 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:49,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1306 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:34:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-24 01:34:49,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 242. [2024-11-24 01:34:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 169 states have (on average 1.1715976331360947) internal successors, (198), 174 states have internal predecessors, (198), 48 states have call successors, (48), 21 states have call predecessors, (48), 24 states have return successors, (60), 46 states have call predecessors, (60), 47 states have call successors, (60) [2024-11-24 01:34:49,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 306 transitions. [2024-11-24 01:34:49,201 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 306 transitions. Word has length 172 [2024-11-24 01:34:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:49,202 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 306 transitions. [2024-11-24 01:34:49,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.6) internal successors, (76), 11 states have internal predecessors, (76), 7 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-24 01:34:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 306 transitions. [2024-11-24 01:34:49,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-24 01:34:49,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:49,204 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:34:49,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 01:34:49,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 01:34:49,407 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:49,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:49,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1789877839, now seen corresponding path program 1 times [2024-11-24 01:34:49,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:49,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776605381] [2024-11-24 01:34:49,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:49,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 57 proven. 14 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-24 01:34:50,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:50,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776605381] [2024-11-24 01:34:50,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776605381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:50,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811158366] [2024-11-24 01:34:50,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:50,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:50,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:50,478 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:50,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 01:34:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:50,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-24 01:34:50,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-24 01:34:51,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:34:51,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811158366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:51,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:34:51,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 25 [2024-11-24 01:34:51,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048616386] [2024-11-24 01:34:51,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:51,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:34:51,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:51,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:34:51,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:34:51,337 INFO L87 Difference]: Start difference. First operand 242 states and 306 transitions. Second operand has 11 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 6 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-24 01:34:52,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:52,153 INFO L93 Difference]: Finished difference Result 420 states and 540 transitions. [2024-11-24 01:34:52,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:34:52,154 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 6 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 173 [2024-11-24 01:34:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:52,157 INFO L225 Difference]: With dead ends: 420 [2024-11-24 01:34:52,158 INFO L226 Difference]: Without dead ends: 239 [2024-11-24 01:34:52,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 01:34:52,160 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 174 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:52,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1181 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:34:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-24 01:34:52,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 233. [2024-11-24 01:34:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 162 states have (on average 1.1728395061728396) internal successors, (190), 166 states have internal predecessors, (190), 48 states have call successors, (48), 21 states have call predecessors, (48), 22 states have return successors, (57), 45 states have call predecessors, (57), 47 states have call successors, (57) [2024-11-24 01:34:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 295 transitions. [2024-11-24 01:34:52,212 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 295 transitions. Word has length 173 [2024-11-24 01:34:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:52,213 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 295 transitions. [2024-11-24 01:34:52,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 6 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-24 01:34:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 295 transitions. [2024-11-24 01:34:52,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-24 01:34:52,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:52,216 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:34:52,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 01:34:52,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 01:34:52,416 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:52,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:52,417 INFO L85 PathProgramCache]: Analyzing trace with hash 943734792, now seen corresponding path program 2 times [2024-11-24 01:34:52,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:52,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164349354] [2024-11-24 01:34:52,418 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:34:52,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:52,553 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:34:52,553 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:34:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 4 proven. 61 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-24 01:34:56,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:56,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164349354] [2024-11-24 01:34:56,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164349354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:56,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864877042] [2024-11-24 01:34:56,644 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:34:56,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:56,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:56,651 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:56,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 01:34:57,390 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:34:57,390 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:34:57,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 164 conjuncts are in the unsatisfiable core [2024-11-24 01:34:57,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:57,476 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 [2024-11-24 01:34:58,240 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-24 01:34:58,267 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-24 01:34:58,268 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 16 treesize of output 15 [2024-11-24 01:34:58,281 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 [2024-11-24 01:34:58,339 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-24 01:34:58,340 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 17 treesize of output 21 [2024-11-24 01:34:58,362 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-24 01:34:58,373 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 16 treesize of output 11 [2024-11-24 01:34:58,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:34:58,566 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 16 treesize of output 11 [2024-11-24 01:34:58,587 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2024-11-24 01:34:58,587 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 31 [2024-11-24 01:34:58,612 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-24 01:34:58,613 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 52 [2024-11-24 01:34:58,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:34:58,641 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-24 01:34:58,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 57 [2024-11-24 01:34:58,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:34:58,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:34:58,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2024-11-24 01:34:58,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:34:58,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:34:58,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 10 [2024-11-24 01:34:58,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:34:58,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:34:58,829 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 30 treesize of output 27 [2024-11-24 01:34:58,835 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 0 case distinctions, treesize of input 18 treesize of output 11 [2024-11-24 01:34:58,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:34:58,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:34:58,882 INFO L349 Elim1Store]: treesize reduction 54, result has 8.5 percent of original size [2024-11-24 01:34:58,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 51 [2024-11-24 01:34:58,894 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 0 case distinctions, treesize of input 36 treesize of output 27 [2024-11-24 01:35:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 127 proven. 60 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-24 01:35:04,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:07,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:35:07,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 196 treesize of output 156 [2024-11-24 01:35:07,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:35:07,554 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 126 [2024-11-24 01:35:08,733 INFO L349 Elim1Store]: treesize reduction 220, result has 54.3 percent of original size [2024-11-24 01:35:08,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 799611 treesize of output 681820 [2024-11-24 01:35:14,806 WARN L286 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 2040 DAG size of output: 639 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 01:35:15,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:35:15,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 618570 treesize of output 609176 [2024-11-24 01:35:19,985 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 39494 treesize of output 39254 [2024-11-24 01:35:20,826 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 40462 treesize of output 39982 [2024-11-24 01:35:22,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:35:22,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 50756 treesize of output 49922 [2024-11-24 01:35:26,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:35:26,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 49542 treesize of output 47853 [2024-11-24 01:36:12,619 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 6 treesize of output 4 [2024-11-24 01:38:07,538 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-24 01:38:07,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-24 01:38:07,540 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-24 01:38:07,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 01:38:07,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 01:38:07,747 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 68 more [2024-11-24 01:38:07,763 INFO L158 Benchmark]: Toolchain (without parser) took 788241.52ms. Allocated memory was 142.6MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 99.7MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-24 01:38:07,764 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 167.8MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:38:07,768 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3046.89ms. Allocated memory was 142.6MB in the beginning and 151.0MB in the end (delta: 8.4MB). Free memory was 99.3MB in the beginning and 96.6MB in the end (delta: 2.7MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. [2024-11-24 01:38:07,768 INFO L158 Benchmark]: Boogie Procedure Inliner took 115.11ms. Allocated memory is still 151.0MB. Free memory was 96.6MB in the beginning and 90.9MB in the end (delta: 5.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:38:07,768 INFO L158 Benchmark]: Boogie Preprocessor took 115.63ms. Allocated memory is still 151.0MB. Free memory was 90.9MB in the beginning and 85.2MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:38:07,769 INFO L158 Benchmark]: RCFGBuilder took 1169.70ms. Allocated memory is still 151.0MB. Free memory was 85.2MB in the beginning and 48.0MB in the end (delta: 37.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-24 01:38:07,769 INFO L158 Benchmark]: TraceAbstraction took 783746.52ms. Allocated memory was 394.3MB in the beginning and 1.9GB in the end (delta: 1.5GB). Free memory was 342.7MB in the beginning and 1.1GB in the end (delta: -795.1MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-24 01:38:07,776 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 167.8MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3046.89ms. Allocated memory was 142.6MB in the beginning and 151.0MB in the end (delta: 8.4MB). Free memory was 99.3MB in the beginning and 96.6MB in the end (delta: 2.7MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 115.11ms. Allocated memory is still 151.0MB. Free memory was 96.6MB in the beginning and 90.9MB in the end (delta: 5.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 115.63ms. Allocated memory is still 151.0MB. Free memory was 90.9MB in the beginning and 85.2MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1169.70ms. Allocated memory is still 151.0MB. Free memory was 85.2MB in the beginning and 48.0MB in the end (delta: 37.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 783746.52ms. Allocated memory was 394.3MB in the beginning and 1.9GB in the end (delta: 1.5GB). Free memory was 342.7MB in the beginning and 1.1GB in the end (delta: -795.1MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0a45241a50bca97d16f2ca30787e76783488e633dbd3fde1131a60622cf8ee85 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:38:11,229 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:38:11,395 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-24 01:38:11,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:38:11,410 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:38:11,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:38:11,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:38:11,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:38:11,464 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:38:11,464 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:38:11,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:38:11,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:38:11,467 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:38:11,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:38:11,467 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:38:11,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:38:11,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:38:11,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:38:11,467 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:38:11,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:38:11,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:38:11,468 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:38:11,468 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 01:38:11,468 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 01:38:11,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:38:11,469 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:38:11,469 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:38:11,470 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:38:11,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:38:11,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:38:11,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:38:11,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:38:11,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:38:11,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:38:11,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:38:11,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:38:11,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:38:11,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:38:11,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:38:11,472 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:38:11,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:38:11,472 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 01:38:11,472 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 01:38:11,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:38:11,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:38:11,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:38:11,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:38:11,473 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a45241a50bca97d16f2ca30787e76783488e633dbd3fde1131a60622cf8ee85 [2024-11-24 01:38:11,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:38:11,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:38:11,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:38:11,963 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:38:11,964 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:38:11,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i [2024-11-24 01:38:15,763 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/data/2ece77438/adc5ad9e7d8d48708bb4932ea75491b3/FLAGcf4fd4028 [2024-11-24 01:38:16,463 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:38:16,464 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i [2024-11-24 01:38:16,530 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/data/2ece77438/adc5ad9e7d8d48708bb4932ea75491b3/FLAGcf4fd4028 [2024-11-24 01:38:16,555 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/data/2ece77438/adc5ad9e7d8d48708bb4932ea75491b3 [2024-11-24 01:38:16,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:38:16,560 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:38:16,562 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:38:16,562 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:38:16,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:38:16,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:38:16" (1/1) ... [2024-11-24 01:38:16,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfdf17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:16, skipping insertion in model container [2024-11-24 01:38:16,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:38:16" (1/1) ... [2024-11-24 01:38:16,691 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:38:17,093 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4499,4512] [2024-11-24 01:38:17,104 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4559,4572] [2024-11-24 01:38:18,157 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,298 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,299 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,300 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,315 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,318 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,319 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,319 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,320 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,321 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,322 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,327 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,328 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,331 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,332 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,345 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,346 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,346 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,347 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,349 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,350 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,351 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,351 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,354 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,355 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,355 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,356 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,356 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,356 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:18,910 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,910 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,911 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:18,912 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,096 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,143 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[150662,150675] [2024-11-24 01:38:19,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:38:19,179 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-24 01:38:19,219 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:38:19,226 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4499,4512] [2024-11-24 01:38:19,227 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4559,4572] [2024-11-24 01:38:19,261 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,286 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,286 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,287 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,328 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,330 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,331 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,331 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,335 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,335 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,336 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,339 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,340 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,344 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,347 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,358 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,362 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,363 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,363 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,365 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,365 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,366 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,369 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,371 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,373 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,374 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,374 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,375 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,375 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,495 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,497 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,498 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,498 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,541 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:38:19,557 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[150662,150675] [2024-11-24 01:38:19,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:38:19,568 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:38:19,593 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4499,4512] [2024-11-24 01:38:19,594 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4559,4572] [2024-11-24 01:38:19,688 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,688 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,689 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,690 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,691 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,703 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,704 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,705 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,706 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,707 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,708 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,709 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,709 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:19,858 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_4784ae40-bb97-4445-9e32-7ed63d3204e1/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[150662,150675] [2024-11-24 01:38:19,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:38:20,303 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:38:20,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20 WrapperNode [2024-11-24 01:38:20,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:38:20,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:38:20,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:38:20,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:38:20,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,455 INFO L138 Inliner]: procedures = 687, calls = 1044, calls flagged for inlining = 53, calls inlined = 8, statements flattened = 224 [2024-11-24 01:38:20,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:38:20,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:38:20,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:38:20,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:38:20,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,476 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,519 INFO L175 MemorySlicer]: Split 43 memory accesses to 3 slices as follows [2, 5, 36]. 84 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 9 writes are split as follows [0, 0, 9]. [2024-11-24 01:38:20,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,543 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:38:20,599 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:38:20,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:38:20,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:38:20,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (1/1) ... [2024-11-24 01:38:20,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:38:20,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:20,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:38:20,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:38:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-24 01:38:20,693 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-24 01:38:20,694 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2024-11-24 01:38:20,694 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2024-11-24 01:38:20,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:38:20,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 01:38:20,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-24 01:38:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-24 01:38:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 01:38:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 01:38:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-24 01:38:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-24 01:38:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:38:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-24 01:38:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-24 01:38:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:38:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 01:38:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 01:38:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 01:38:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:38:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:38:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-24 01:38:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-24 01:38:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-24 01:38:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-24 01:38:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-24 01:38:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-24 01:38:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-24 01:38:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-24 01:38:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-24 01:38:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-24 01:38:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-24 01:38:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:38:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:38:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:38:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 01:38:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 01:38:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 01:38:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 01:38:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 01:38:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 01:38:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-24 01:38:20,699 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-24 01:38:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-24 01:38:20,701 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-24 01:38:21,192 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:38:21,194 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:38:22,139 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2024-11-24 01:38:22,139 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:38:22,159 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:38:22,161 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 01:38:22,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:38:22 BoogieIcfgContainer [2024-11-24 01:38:22,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:38:22,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:38:22,167 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:38:22,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:38:22,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:38:16" (1/3) ... [2024-11-24 01:38:22,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631dafd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:38:22, skipping insertion in model container [2024-11-24 01:38:22,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:20" (2/3) ... [2024-11-24 01:38:22,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631dafd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:38:22, skipping insertion in model container [2024-11-24 01:38:22,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:38:22" (3/3) ... [2024-11-24 01:38:22,177 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_front_harness.i [2024-11-24 01:38:22,196 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:38:22,198 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_pop_front_harness.i that has 13 procedures, 145 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-24 01:38:22,270 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:38:22,284 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;@4b1fe643, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:38:22,284 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:38:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-24 01:38:22,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:38:22,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:22,303 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:22,304 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:22,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:22,311 INFO L85 PathProgramCache]: Analyzing trace with hash -629864822, now seen corresponding path program 1 times [2024-11-24 01:38:22,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:22,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457668559] [2024-11-24 01:38:22,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:22,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:22,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:22,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:22,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:38:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:22,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:38:22,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-24 01:38:22,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:22,735 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457668559] [2024-11-24 01:38:22,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457668559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:22,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:22,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:38:22,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534294418] [2024-11-24 01:38:22,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:22,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:38:22,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:22,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:38:22,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:38:22,778 INFO L87 Difference]: Start difference. First operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 01:38:22,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:22,862 INFO L93 Difference]: Finished difference Result 266 states and 401 transitions. [2024-11-24 01:38:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:38:22,864 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2024-11-24 01:38:22,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:22,878 INFO L225 Difference]: With dead ends: 266 [2024-11-24 01:38:22,880 INFO L226 Difference]: Without dead ends: 132 [2024-11-24 01:38:22,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:38:22,896 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:22,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:38:22,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-24 01:38:22,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-24 01:38:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 84 states have (on average 1.25) internal successors, (105), 85 states have internal predecessors, (105), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-24 01:38:22,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 178 transitions. [2024-11-24 01:38:22,973 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 178 transitions. Word has length 116 [2024-11-24 01:38:22,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:22,973 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 178 transitions. [2024-11-24 01:38:22,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 01:38:22,974 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 178 transitions. [2024-11-24 01:38:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:38:22,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:22,979 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:22,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:38:23,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:23,180 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:23,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:23,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1855713404, now seen corresponding path program 1 times [2024-11-24 01:38:23,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:23,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523893981] [2024-11-24 01:38:23,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:23,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:23,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:23,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:23,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:38:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:23,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:38:23,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-24 01:38:23,665 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:23,665 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:23,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523893981] [2024-11-24 01:38:23,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523893981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:23,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:23,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:38:23,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440607688] [2024-11-24 01:38:23,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:23,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:38:23,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:23,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:38:23,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:38:23,671 INFO L87 Difference]: Start difference. First operand 132 states and 178 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 01:38:23,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:23,885 INFO L93 Difference]: Finished difference Result 246 states and 335 transitions. [2024-11-24 01:38:23,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:38:23,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2024-11-24 01:38:23,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:23,896 INFO L225 Difference]: With dead ends: 246 [2024-11-24 01:38:23,896 INFO L226 Difference]: Without dead ends: 134 [2024-11-24 01:38:23,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:38:23,898 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:23,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 807 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:38:23,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-24 01:38:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-24 01:38:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 87 states have internal predecessors, (106), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-24 01:38:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 183 transitions. [2024-11-24 01:38:23,934 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 183 transitions. Word has length 116 [2024-11-24 01:38:23,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:23,937 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 183 transitions. [2024-11-24 01:38:23,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 01:38:23,937 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 183 transitions. [2024-11-24 01:38:23,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-24 01:38:23,941 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:23,941 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:38:23,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:38:24,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:24,146 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:24,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2124008296, now seen corresponding path program 1 times [2024-11-24 01:38:24,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:24,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406436039] [2024-11-24 01:38:24,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:24,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:24,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:24,151 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:24,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:38:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:24,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:38:24,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-24 01:38:24,523 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:24,523 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:24,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406436039] [2024-11-24 01:38:24,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406436039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:24,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:24,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:38:24,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659899125] [2024-11-24 01:38:24,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:24,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:38:24,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:24,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:38:24,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:38:24,526 INFO L87 Difference]: Start difference. First operand 134 states and 183 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:38:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:24,571 INFO L93 Difference]: Finished difference Result 249 states and 346 transitions. [2024-11-24 01:38:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:38:24,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2024-11-24 01:38:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:24,574 INFO L225 Difference]: With dead ends: 249 [2024-11-24 01:38:24,574 INFO L226 Difference]: Without dead ends: 135 [2024-11-24 01:38:24,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:38:24,580 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:24,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 350 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:38:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-24 01:38:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-24 01:38:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 86 states have (on average 1.244186046511628) internal successors, (107), 88 states have internal predecessors, (107), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-24 01:38:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 184 transitions. [2024-11-24 01:38:24,599 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 184 transitions. Word has length 118 [2024-11-24 01:38:24,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:24,600 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 184 transitions. [2024-11-24 01:38:24,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:38:24,600 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 184 transitions. [2024-11-24 01:38:24,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-24 01:38:24,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:24,606 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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] [2024-11-24 01:38:24,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 01:38:24,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:24,807 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:24,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:24,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1491686746, now seen corresponding path program 1 times [2024-11-24 01:38:24,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:24,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249512737] [2024-11-24 01:38:24,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:24,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:24,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:24,812 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:24,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:38:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:25,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:38:25,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-24 01:38:25,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:25,369 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:25,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249512737] [2024-11-24 01:38:25,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249512737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:25,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:25,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:38:25,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812034197] [2024-11-24 01:38:25,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:25,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:38:25,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:25,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:38:25,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:38:25,375 INFO L87 Difference]: Start difference. First operand 135 states and 184 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:38:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:25,853 INFO L93 Difference]: Finished difference Result 255 states and 350 transitions. [2024-11-24 01:38:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:38:25,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 118 [2024-11-24 01:38:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:25,857 INFO L225 Difference]: With dead ends: 255 [2024-11-24 01:38:25,857 INFO L226 Difference]: Without dead ends: 140 [2024-11-24 01:38:25,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:38:25,863 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 46 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:25,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 873 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:38:25,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-24 01:38:25,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2024-11-24 01:38:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 91 states have internal predecessors, (109), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2024-11-24 01:38:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 188 transitions. [2024-11-24 01:38:25,929 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 188 transitions. Word has length 118 [2024-11-24 01:38:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:25,929 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 188 transitions. [2024-11-24 01:38:25,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:38:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 188 transitions. [2024-11-24 01:38:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-24 01:38:25,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:25,935 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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] [2024-11-24 01:38:25,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 01:38:26,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:26,136 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:26,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash 87828456, now seen corresponding path program 1 times [2024-11-24 01:38:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:26,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665346524] [2024-11-24 01:38:26,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:26,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:26,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:26,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:26,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:38:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:26,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:38:26,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-24 01:38:26,705 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:26,706 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:26,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665346524] [2024-11-24 01:38:26,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665346524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:26,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:26,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:38:26,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865104736] [2024-11-24 01:38:26,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:26,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:38:26,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:26,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:38:26,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:38:26,708 INFO L87 Difference]: Start difference. First operand 138 states and 188 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:38:27,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:27,286 INFO L93 Difference]: Finished difference Result 267 states and 368 transitions. [2024-11-24 01:38:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:38:27,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 120 [2024-11-24 01:38:27,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:27,289 INFO L225 Difference]: With dead ends: 267 [2024-11-24 01:38:27,289 INFO L226 Difference]: Without dead ends: 149 [2024-11-24 01:38:27,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:38:27,291 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 55 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:27,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1017 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:38:27,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-24 01:38:27,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 140. [2024-11-24 01:38:27,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.2444444444444445) internal successors, (112), 93 states have internal predecessors, (112), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2024-11-24 01:38:27,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 191 transitions. [2024-11-24 01:38:27,316 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 191 transitions. Word has length 120 [2024-11-24 01:38:27,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:27,317 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 191 transitions. [2024-11-24 01:38:27,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:38:27,317 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 191 transitions. [2024-11-24 01:38:27,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-24 01:38:27,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:27,320 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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] [2024-11-24 01:38:27,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:38:27,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:27,520 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:27,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:27,521 INFO L85 PathProgramCache]: Analyzing trace with hash 441052957, now seen corresponding path program 1 times [2024-11-24 01:38:27,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:27,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809202487] [2024-11-24 01:38:27,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:27,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:27,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:27,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:27,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:38:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:27,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:38:27,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-24 01:38:27,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:27,844 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:27,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809202487] [2024-11-24 01:38:27,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809202487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:27,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:27,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:38:27,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320958783] [2024-11-24 01:38:27,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:27,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:38:27,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:27,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:38:27,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:38:27,846 INFO L87 Difference]: Start difference. First operand 140 states and 191 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:38:27,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:27,912 INFO L93 Difference]: Finished difference Result 264 states and 367 transitions. [2024-11-24 01:38:27,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:38:27,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 121 [2024-11-24 01:38:27,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:27,916 INFO L225 Difference]: With dead ends: 264 [2024-11-24 01:38:27,916 INFO L226 Difference]: Without dead ends: 144 [2024-11-24 01:38:27,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:38:27,918 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 2 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:27,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 344 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:38:27,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-24 01:38:27,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2024-11-24 01:38:27,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 94 states have internal predecessors, (113), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2024-11-24 01:38:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 192 transitions. [2024-11-24 01:38:27,939 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 192 transitions. Word has length 121 [2024-11-24 01:38:27,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:27,939 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 192 transitions. [2024-11-24 01:38:27,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:38:27,940 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 192 transitions. [2024-11-24 01:38:27,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 01:38:27,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:27,942 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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] [2024-11-24 01:38:27,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:38:28,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:28,147 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:28,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash -778355169, now seen corresponding path program 1 times [2024-11-24 01:38:28,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:28,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811866678] [2024-11-24 01:38:28,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:28,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:28,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:28,152 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:28,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:38:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:28,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:38:28,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-24 01:38:28,554 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:28,554 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:28,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811866678] [2024-11-24 01:38:28,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811866678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:28,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:28,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:38:28,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92447422] [2024-11-24 01:38:28,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:28,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:38:28,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:28,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:38:28,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:38:28,557 INFO L87 Difference]: Start difference. First operand 141 states and 192 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:38:28,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:28,721 INFO L93 Difference]: Finished difference Result 259 states and 350 transitions. [2024-11-24 01:38:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:38:28,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-24 01:38:28,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:28,725 INFO L225 Difference]: With dead ends: 259 [2024-11-24 01:38:28,725 INFO L226 Difference]: Without dead ends: 141 [2024-11-24 01:38:28,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:38:28,727 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:28,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 807 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:38:28,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-24 01:38:28,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-24 01:38:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 94 states have internal predecessors, (113), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (41), 36 states have call predecessors, (41), 36 states have call successors, (41) [2024-11-24 01:38:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 191 transitions. [2024-11-24 01:38:28,747 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 191 transitions. Word has length 129 [2024-11-24 01:38:28,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:28,748 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 191 transitions. [2024-11-24 01:38:28,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:38:28,748 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 191 transitions. [2024-11-24 01:38:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-24 01:38:28,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:28,750 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:38:28,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:38:28,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:28,951 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:28,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:28,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1845034947, now seen corresponding path program 1 times [2024-11-24 01:38:28,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:28,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904291944] [2024-11-24 01:38:28,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:28,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:28,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:28,957 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:28,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:38:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:29,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 01:38:29,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-24 01:38:29,462 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:29,462 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:29,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904291944] [2024-11-24 01:38:29,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904291944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:29,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:29,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:38:29,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750494575] [2024-11-24 01:38:29,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:29,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:38:29,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:29,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:38:29,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:38:29,465 INFO L87 Difference]: Start difference. First operand 141 states and 191 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-24 01:38:29,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:29,885 INFO L93 Difference]: Finished difference Result 264 states and 355 transitions. [2024-11-24 01:38:29,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:38:29,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 131 [2024-11-24 01:38:29,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:29,889 INFO L225 Difference]: With dead ends: 264 [2024-11-24 01:38:29,889 INFO L226 Difference]: Without dead ends: 143 [2024-11-24 01:38:29,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:38:29,891 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 51 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:29,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1023 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:38:29,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-24 01:38:29,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2024-11-24 01:38:29,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 94 states have internal predecessors, (112), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (41), 36 states have call predecessors, (41), 36 states have call successors, (41) [2024-11-24 01:38:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 190 transitions. [2024-11-24 01:38:29,911 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 190 transitions. Word has length 131 [2024-11-24 01:38:29,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:29,911 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 190 transitions. [2024-11-24 01:38:29,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-24 01:38:29,912 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 190 transitions. [2024-11-24 01:38:29,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-24 01:38:29,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:29,914 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:29,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:38:30,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:30,120 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:30,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:30,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1008192523, now seen corresponding path program 1 times [2024-11-24 01:38:30,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:30,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143077921] [2024-11-24 01:38:30,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:30,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:30,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:30,124 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:30,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:38:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:30,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:38:30,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-24 01:38:30,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:30,700 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:30,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143077921] [2024-11-24 01:38:30,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143077921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:30,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:30,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:38:30,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32059820] [2024-11-24 01:38:30,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:30,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:38:30,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:30,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:38:30,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:38:30,706 INFO L87 Difference]: Start difference. First operand 141 states and 190 transitions. Second operand has 9 states, 8 states have (on average 9.25) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-24 01:38:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:31,221 INFO L93 Difference]: Finished difference Result 264 states and 354 transitions. [2024-11-24 01:38:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:38:31,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 133 [2024-11-24 01:38:31,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:31,224 INFO L225 Difference]: With dead ends: 264 [2024-11-24 01:38:31,224 INFO L226 Difference]: Without dead ends: 142 [2024-11-24 01:38:31,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:38:31,225 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 60 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:31,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1158 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:38:31,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-24 01:38:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2024-11-24 01:38:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 90 states have internal predecessors, (108), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (39), 36 states have call predecessors, (39), 36 states have call successors, (39) [2024-11-24 01:38:31,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2024-11-24 01:38:31,243 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 133 [2024-11-24 01:38:31,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:31,243 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2024-11-24 01:38:31,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-24 01:38:31,244 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2024-11-24 01:38:31,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-24 01:38:31,246 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:31,246 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:31,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 01:38:31,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:31,449 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:31,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:31,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2138012144, now seen corresponding path program 2 times [2024-11-24 01:38:31,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:31,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054240953] [2024-11-24 01:38:31,452 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:38:31,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:31,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:31,454 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:31,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:38:31,872 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:38:31,872 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:38:31,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:38:31,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-24 01:38:31,968 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:31,968 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:31,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054240953] [2024-11-24 01:38:31,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054240953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:31,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:31,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:38:31,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232950179] [2024-11-24 01:38:31,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:31,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:38:31,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:31,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:38:31,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:38:31,970 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 01:38:32,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:32,156 INFO L93 Difference]: Finished difference Result 257 states and 348 transitions. [2024-11-24 01:38:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:38:32,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 142 [2024-11-24 01:38:32,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:32,160 INFO L225 Difference]: With dead ends: 257 [2024-11-24 01:38:32,160 INFO L226 Difference]: Without dead ends: 140 [2024-11-24 01:38:32,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:38:32,162 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:32,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 960 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:38:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-24 01:38:32,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-24 01:38:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 93 states have internal predecessors, (110), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (43), 36 states have call predecessors, (43), 36 states have call successors, (43) [2024-11-24 01:38:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2024-11-24 01:38:32,181 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 142 [2024-11-24 01:38:32,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:32,182 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2024-11-24 01:38:32,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 01:38:32,183 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2024-11-24 01:38:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-24 01:38:32,186 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:32,187 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:32,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 01:38:32,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:32,392 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:32,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:32,392 INFO L85 PathProgramCache]: Analyzing trace with hash 437673858, now seen corresponding path program 1 times [2024-11-24 01:38:32,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:32,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12937336] [2024-11-24 01:38:32,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:32,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:32,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:32,395 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:32,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:38:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:32,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:38:32,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-24 01:38:32,852 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:32,852 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:32,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12937336] [2024-11-24 01:38:32,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12937336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:32,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:32,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:38:32,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653456741] [2024-11-24 01:38:32,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:32,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:38:32,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:32,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:38:32,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:38:32,855 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:38:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:33,057 INFO L93 Difference]: Finished difference Result 257 states and 347 transitions. [2024-11-24 01:38:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:38:33,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 144 [2024-11-24 01:38:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:33,060 INFO L225 Difference]: With dead ends: 257 [2024-11-24 01:38:33,060 INFO L226 Difference]: Without dead ends: 140 [2024-11-24 01:38:33,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:38:33,063 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:33,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 960 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:38:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-24 01:38:33,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2024-11-24 01:38:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 91 states have internal predecessors, (109), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (39), 36 states have call predecessors, (39), 36 states have call successors, (39) [2024-11-24 01:38:33,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 185 transitions. [2024-11-24 01:38:33,084 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 185 transitions. Word has length 144 [2024-11-24 01:38:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:33,087 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 185 transitions. [2024-11-24 01:38:33,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:38:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 185 transitions. [2024-11-24 01:38:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-24 01:38:33,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:33,091 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:33,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 01:38:33,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:33,292 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:33,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash -36934128, now seen corresponding path program 1 times [2024-11-24 01:38:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:33,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659234216] [2024-11-24 01:38:33,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:33,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:33,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:33,295 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:33,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:38:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:33,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-24 01:38:33,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:33,699 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 8 treesize of output 1 [2024-11-24 01:38:38,489 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) (_ bv0 64)))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#2.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|))))) is different from true [2024-11-24 01:38:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 123 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-24 01:38:38,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:38:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-24 01:38:39,589 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:39,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659234216] [2024-11-24 01:38:39,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659234216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:38:39,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:38:39,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2024-11-24 01:38:39,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342418192] [2024-11-24 01:38:39,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:38:39,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:38:39,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:39,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:38:39,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=199, Unknown=1, NotChecked=28, Total=272 [2024-11-24 01:38:39,593 INFO L87 Difference]: Start difference. First operand 138 states and 185 transitions. Second operand has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 5 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-24 01:38:42,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:42,198 INFO L93 Difference]: Finished difference Result 301 states and 418 transitions. [2024-11-24 01:38:42,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:38:42,200 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 5 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 146 [2024-11-24 01:38:42,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:42,203 INFO L225 Difference]: With dead ends: 301 [2024-11-24 01:38:42,203 INFO L226 Difference]: Without dead ends: 183 [2024-11-24 01:38:42,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=76, Invalid=347, Unknown=1, NotChecked=38, Total=462 [2024-11-24 01:38:42,205 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 70 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 366 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:42,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1639 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 464 Invalid, 0 Unknown, 366 Unchecked, 2.2s Time] [2024-11-24 01:38:42,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-24 01:38:42,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 156. [2024-11-24 01:38:42,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 105 states have (on average 1.2476190476190476) internal successors, (131), 107 states have internal predecessors, (131), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2024-11-24 01:38:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 210 transitions. [2024-11-24 01:38:42,228 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 210 transitions. Word has length 146 [2024-11-24 01:38:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:42,229 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 210 transitions. [2024-11-24 01:38:42,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 5 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-24 01:38:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 210 transitions. [2024-11-24 01:38:42,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-24 01:38:42,233 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:42,233 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:42,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 01:38:42,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:42,434 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:42,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:42,435 INFO L85 PathProgramCache]: Analyzing trace with hash 305665616, now seen corresponding path program 1 times [2024-11-24 01:38:42,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:42,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130193390] [2024-11-24 01:38:42,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:42,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:42,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:42,440 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:42,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:38:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:42,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:38:42,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-24 01:38:42,793 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:42,793 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:42,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130193390] [2024-11-24 01:38:42,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130193390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:42,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:42,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:38:42,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502012438] [2024-11-24 01:38:42,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:42,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:38:42,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:42,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:38:42,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:38:42,796 INFO L87 Difference]: Start difference. First operand 156 states and 210 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:38:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:42,847 INFO L93 Difference]: Finished difference Result 293 states and 402 transitions. [2024-11-24 01:38:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:38:42,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2024-11-24 01:38:42,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:42,850 INFO L225 Difference]: With dead ends: 293 [2024-11-24 01:38:42,850 INFO L226 Difference]: Without dead ends: 157 [2024-11-24 01:38:42,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:38:42,852 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:42,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:38:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-24 01:38:42,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2024-11-24 01:38:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 107 states have internal predecessors, (130), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2024-11-24 01:38:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 209 transitions. [2024-11-24 01:38:42,869 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 209 transitions. Word has length 146 [2024-11-24 01:38:42,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:42,870 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 209 transitions. [2024-11-24 01:38:42,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:38:42,870 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 209 transitions. [2024-11-24 01:38:42,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-24 01:38:42,872 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:42,872 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:42,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 01:38:43,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:43,073 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:43,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:43,074 INFO L85 PathProgramCache]: Analyzing trace with hash 837865104, now seen corresponding path program 1 times [2024-11-24 01:38:43,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:43,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038277253] [2024-11-24 01:38:43,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:43,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:43,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:43,076 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:43,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:38:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:43,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:38:43,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:43,411 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-24 01:38:43,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:43,412 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:43,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038277253] [2024-11-24 01:38:43,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038277253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:43,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:43,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:38:43,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040087604] [2024-11-24 01:38:43,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:43,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:38:43,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:43,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:38:43,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:38:43,415 INFO L87 Difference]: Start difference. First operand 156 states and 209 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:38:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:43,465 INFO L93 Difference]: Finished difference Result 290 states and 397 transitions. [2024-11-24 01:38:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:38:43,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2024-11-24 01:38:43,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:43,470 INFO L225 Difference]: With dead ends: 290 [2024-11-24 01:38:43,470 INFO L226 Difference]: Without dead ends: 154 [2024-11-24 01:38:43,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:38:43,472 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:43,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:38:43,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-24 01:38:43,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2024-11-24 01:38:43,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 103 states have internal predecessors, (124), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2024-11-24 01:38:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 203 transitions. [2024-11-24 01:38:43,498 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 203 transitions. Word has length 146 [2024-11-24 01:38:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:43,499 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 203 transitions. [2024-11-24 01:38:43,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:38:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 203 transitions. [2024-11-24 01:38:43,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-24 01:38:43,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:43,505 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:43,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-24 01:38:43,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:43,705 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:43,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:43,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1108579596, now seen corresponding path program 1 times [2024-11-24 01:38:43,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:43,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934233723] [2024-11-24 01:38:43,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:43,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:43,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:43,708 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:43,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 01:38:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:44,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-24 01:38:44,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:44,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-24 01:38:44,256 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 8 treesize of output 1 [2024-11-24 01:38:47,342 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-24 01:38:47,342 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:38:47,342 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:38:47,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934233723] [2024-11-24 01:38:47,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934233723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:47,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:47,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 01:38:47,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562863586] [2024-11-24 01:38:47,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:47,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:38:47,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:38:47,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:38:47,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:38:47,345 INFO L87 Difference]: Start difference. First operand 152 states and 203 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-24 01:38:51,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:51,018 INFO L93 Difference]: Finished difference Result 379 states and 501 transitions. [2024-11-24 01:38:51,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:38:51,019 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 148 [2024-11-24 01:38:51,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:51,023 INFO L225 Difference]: With dead ends: 379 [2024-11-24 01:38:51,024 INFO L226 Difference]: Without dead ends: 258 [2024-11-24 01:38:51,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 117 SyntacticMatches, 20 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:38:51,028 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 79 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:51,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 822 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 01:38:51,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-24 01:38:51,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 252. [2024-11-24 01:38:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 169 states have (on average 1.2307692307692308) internal successors, (208), 173 states have internal predecessors, (208), 62 states have call successors, (62), 19 states have call predecessors, (62), 20 states have return successors, (67), 59 states have call predecessors, (67), 61 states have call successors, (67) [2024-11-24 01:38:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 337 transitions. [2024-11-24 01:38:51,080 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 337 transitions. Word has length 148 [2024-11-24 01:38:51,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:51,081 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 337 transitions. [2024-11-24 01:38:51,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-24 01:38:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 337 transitions. [2024-11-24 01:38:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-24 01:38:51,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:51,090 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:51,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 01:38:51,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:51,291 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:51,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:51,292 INFO L85 PathProgramCache]: Analyzing trace with hash -299232970, now seen corresponding path program 1 times [2024-11-24 01:38:51,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:38:51,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045645839] [2024-11-24 01:38:51,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:51,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:51,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:51,294 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:51,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4784ae40-bb97-4445-9e32-7ed63d3204e1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 01:38:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:51,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-24 01:38:51,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:51,724 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 13 treesize of output 1 [2024-11-24 01:38:51,732 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 13 treesize of output 1