./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_back_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_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/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_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/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_fbd51289-8241-4e92-92a5-d3016b7e0d42/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 2279e66d659d6de4a6f1e9cba0e3ed135a3304882c70e550497f0feeaae371b4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:22:15,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:22:15,187 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 18:22:15,195 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:22:15,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:22:15,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:22:15,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:22:15,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:22:15,237 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:22:15,237 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:22:15,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:22:15,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:22:15,239 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:22:15,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:22:15,239 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:22:15,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:22:15,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:22:15,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:22:15,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:22:15,241 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:22:15,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:22:15,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:22:15,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:22:15,241 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:22:15,241 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:22:15,242 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:22:15,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:22:15,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:22:15,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:22:15,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:22:15,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:22:15,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:22:15,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:22:15,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:22:15,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:22:15,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:22:15,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:22:15,244 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:22:15,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:22:15,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:22:15,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:22:15,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:22:15,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:22:15,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:22:15,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:22:15,245 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_fbd51289-8241-4e92-92a5-d3016b7e0d42/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 -> 2279e66d659d6de4a6f1e9cba0e3ed135a3304882c70e550497f0feeaae371b4 [2024-11-23 18:22:15,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:22:15,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:22:15,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:22:15,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:22:15,615 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:22:15,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2024-11-23 18:22:18,996 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/data/a4d713b55/0c28a2a68d644a6bb424431344b6ee4d/FLAG4ed55ed67 [2024-11-23 18:22:19,734 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:22:19,735 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2024-11-23 18:22:19,802 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/data/a4d713b55/0c28a2a68d644a6bb424431344b6ee4d/FLAG4ed55ed67 [2024-11-23 18:22:19,831 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/data/a4d713b55/0c28a2a68d644a6bb424431344b6ee4d [2024-11-23 18:22:19,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:22:19,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:22:19,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:22:19,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:22:19,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:22:19,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:22:19" (1/1) ... [2024-11-23 18:22:19,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e2f61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:19, skipping insertion in model container [2024-11-23 18:22:19,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:22:19" (1/1) ... [2024-11-23 18:22:20,005 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:22:20,325 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_fbd51289-8241-4e92-92a5-d3016b7e0d42/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506] [2024-11-23 18:22:20,334 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_fbd51289-8241-4e92-92a5-d3016b7e0d42/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566] [2024-11-23 18:22:21,521 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:21,522 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:21,523 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:21,524 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:21,525 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:21,543 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:21,544 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:21,547 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:21,548 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:21,551 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:21,552 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:21,553 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:21,553 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,395 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,405 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:22:22,585 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:22:22,607 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_fbd51289-8241-4e92-92a5-d3016b7e0d42/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506] [2024-11-23 18:22:22,608 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_fbd51289-8241-4e92-92a5-d3016b7e0d42/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566] [2024-11-23 18:22:22,760 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,761 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,761 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,762 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,763 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,771 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,772 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,773 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,774 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,775 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,776 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,776 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,777 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,894 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,908 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:22:22,916 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7769-7780] [2024-11-23 18:22:22,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:22:23,137 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:22:23,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23 WrapperNode [2024-11-23 18:22:23,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:22:23,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:22:23,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:22:23,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:22:23,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,274 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,361 INFO L138 Inliner]: procedures = 680, calls = 1678, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 656 [2024-11-23 18:22:23,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:22:23,363 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:22:23,363 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:22:23,363 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:22:23,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,409 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,524 INFO L175 MemorySlicer]: Split 313 memory accesses to 6 slices as follows [238, 2, 9, 55, 6, 3]. 76 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 5, 10, 0, 1]. The 239 writes are split as follows [232, 0, 1, 3, 2, 1]. [2024-11-23 18:22:23,525 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,585 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,622 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:22:23,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:22:23,651 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:22:23,651 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:22:23,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ... [2024-11-23 18:22:23,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:22:23,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:22:23,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:22:23,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:22:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 18:22:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-23 18:22:23,750 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-23 18:22:23,750 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-23 18:22:23,750 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-23 18:22:23,750 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-23 18:22:23,750 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-23 18:22:23,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 18:22:23,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 18:22:23,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 18:22:23,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 18:22:23,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 18:22:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 18:22:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 18:22:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 18:22:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 18:22:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 18:22:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 18:22:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 18:22:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-23 18:22:23,754 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-23 18:22:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 18:22:23,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 18:22:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 18:22:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:22:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 18:22:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 18:22:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 18:22:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 18:22:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 18:22:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 18:22:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-23 18:22:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-23 18:22:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:22:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:22:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-23 18:22:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-23 18:22:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-23 18:22:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-23 18:22:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-23 18:22:23,758 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-23 18:22:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-23 18:22:23,759 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-23 18:22:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 18:22:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 18:22:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 18:22:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 18:22:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 18:22:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 18:22:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-23 18:22:23,759 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-23 18:22:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-23 18:22:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-23 18:22:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:22:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:22:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-23 18:22:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-23 18:22:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 18:22:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 18:22:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 18:22:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 18:22:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 18:22:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 18:22:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 18:22:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 18:22:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 18:22:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 18:22:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 18:22:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 18:22:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-23 18:22:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-23 18:22:23,761 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-23 18:22:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-23 18:22:23,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-23 18:22:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 18:22:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 18:22:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 18:22:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 18:22:23,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 18:22:23,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 18:22:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-23 18:22:23,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-23 18:22:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:22:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:22:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 18:22:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 18:22:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 18:22:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 18:22:24,165 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:22:24,169 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:22:31,312 INFO L? ?]: Removed 126 outVars from TransFormulas that were not future-live. [2024-11-23 18:22:31,313 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:22:31,336 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:22:31,338 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 18:22:31,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:22:31 BoogieIcfgContainer [2024-11-23 18:22:31,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:22:31,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:22:31,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:22:31,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:22:31,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:22:19" (1/3) ... [2024-11-23 18:22:31,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdb8c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:22:31, skipping insertion in model container [2024-11-23 18:22:31,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (2/3) ... [2024-11-23 18:22:31,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdb8c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:22:31, skipping insertion in model container [2024-11-23 18:22:31,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:22:31" (3/3) ... [2024-11-23 18:22:31,353 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness.i [2024-11-23 18:22:31,372 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:22:31,374 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_back_harness.i that has 18 procedures, 186 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:22:31,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:22:31,478 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;@a1e06c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:22:31,481 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:22:31,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 113 states have internal predecessors, (135), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-23 18:22:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 18:22:31,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:22:31,507 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:22:31,508 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:22:31,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:22:31,517 INFO L85 PathProgramCache]: Analyzing trace with hash -357183169, now seen corresponding path program 1 times [2024-11-23 18:22:31,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:22:31,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996173162] [2024-11-23 18:22:31,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:31,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:22:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-23 18:22:40,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:22:40,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996173162] [2024-11-23 18:22:40,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996173162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:22:40,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840077518] [2024-11-23 18:22:40,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:40,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:22:40,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:22:40,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:22:40,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:22:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:48,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 4262 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:22:48,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:22:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-23 18:22:48,656 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:22:48,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840077518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:22:48,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:22:48,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 18:22:48,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765838737] [2024-11-23 18:22:48,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:22:48,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:22:48,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:22:48,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:22:48,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:22:48,705 INFO L87 Difference]: Start difference. First operand has 186 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 113 states have internal predecessors, (135), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 18:22:48,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:22:48,789 INFO L93 Difference]: Finished difference Result 365 states and 518 transitions. [2024-11-23 18:22:48,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:22:48,791 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 129 [2024-11-23 18:22:48,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:22:48,802 INFO L225 Difference]: With dead ends: 365 [2024-11-23 18:22:48,802 INFO L226 Difference]: Without dead ends: 177 [2024-11-23 18:22:48,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:22:48,813 INFO L435 NwaCegarLoop]: 242 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, 242 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 [2024-11-23 18:22:48,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:22:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-23 18:22:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-23 18:22:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 105 states have (on average 1.161904761904762) internal successors, (122), 106 states have internal predecessors, (122), 55 states have call successors, (55), 17 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-23 18:22:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 230 transitions. [2024-11-23 18:22:48,902 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 230 transitions. Word has length 129 [2024-11-23 18:22:48,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:22:48,904 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 230 transitions. [2024-11-23 18:22:48,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 18:22:48,905 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 230 transitions. [2024-11-23 18:22:48,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 18:22:48,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:22:48,915 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:22:48,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:22:49,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 18:22:49,117 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:22:49,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:22:49,117 INFO L85 PathProgramCache]: Analyzing trace with hash -298153149, now seen corresponding path program 1 times [2024-11-23 18:22:49,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:22:49,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304793711] [2024-11-23 18:22:49,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:49,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:22:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:57,527 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-23 18:22:57,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:22:57,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304793711] [2024-11-23 18:22:57,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304793711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:22:57,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132395277] [2024-11-23 18:22:57,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:57,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:22:57,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:22:57,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:22:57,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:23:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:23:04,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 4262 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:23:04,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:23:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-23 18:23:05,521 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:23:05,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132395277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:23:05,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:23:05,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-23 18:23:05,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303361883] [2024-11-23 18:23:05,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:23:05,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:23:05,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:23:05,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:23:05,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:23:05,525 INFO L87 Difference]: Start difference. First operand 177 states and 230 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-23 18:23:07,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:23:07,421 INFO L93 Difference]: Finished difference Result 327 states and 431 transitions. [2024-11-23 18:23:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:23:07,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 129 [2024-11-23 18:23:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:23:07,427 INFO L225 Difference]: With dead ends: 327 [2024-11-23 18:23:07,428 INFO L226 Difference]: Without dead ends: 179 [2024-11-23 18:23:07,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:23:07,431 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 242 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 18:23:07,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 658 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 18:23:07,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-23 18:23:07,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-23 18:23:07,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 108 states have internal predecessors, (123), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2024-11-23 18:23:07,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 236 transitions. [2024-11-23 18:23:07,464 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 236 transitions. Word has length 129 [2024-11-23 18:23:07,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:23:07,465 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 236 transitions. [2024-11-23 18:23:07,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-23 18:23:07,465 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 236 transitions. [2024-11-23 18:23:07,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-23 18:23:07,469 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:23:07,470 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:23:07,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:23:07,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:23:07,671 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:23:07,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:23:07,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1469361281, now seen corresponding path program 1 times [2024-11-23 18:23:07,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:23:07,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136286560] [2024-11-23 18:23:07,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:23:07,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:23:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:23:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-23 18:23:15,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:23:15,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136286560] [2024-11-23 18:23:15,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136286560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:23:15,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141087550] [2024-11-23 18:23:15,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:23:15,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:23:15,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:23:15,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:23:15,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:23:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:23:22,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 4516 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:23:22,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:23:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-23 18:23:23,891 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:23:23,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141087550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:23:23,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:23:23,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-23 18:23:23,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817298355] [2024-11-23 18:23:23,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:23:23,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:23:23,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:23:23,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:23:23,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:23:23,894 INFO L87 Difference]: Start difference. First operand 179 states and 236 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 18:23:26,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:23:26,171 INFO L93 Difference]: Finished difference Result 289 states and 381 transitions. [2024-11-23 18:23:26,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:23:26,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 159 [2024-11-23 18:23:26,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:23:26,176 INFO L225 Difference]: With dead ends: 289 [2024-11-23 18:23:26,176 INFO L226 Difference]: Without dead ends: 179 [2024-11-23 18:23:26,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:23:26,181 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 245 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:23:26,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 815 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 18:23:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-23 18:23:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-23 18:23:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 108 states have internal predecessors, (123), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2024-11-23 18:23:26,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 233 transitions. [2024-11-23 18:23:26,214 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 233 transitions. Word has length 159 [2024-11-23 18:23:26,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:23:26,215 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 233 transitions. [2024-11-23 18:23:26,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 18:23:26,216 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 233 transitions. [2024-11-23 18:23:26,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-23 18:23:26,221 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:23:26,222 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:23:26,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 18:23:26,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:23:26,423 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:23:26,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:23:26,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1115773871, now seen corresponding path program 2 times [2024-11-23 18:23:26,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:23:26,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693706580] [2024-11-23 18:23:26,424 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:23:26,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:23:33,076 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 18:23:33,076 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:23:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-23 18:23:35,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:23:35,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693706580] [2024-11-23 18:23:35,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693706580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:23:35,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:23:35,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:23:35,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18679859] [2024-11-23 18:23:35,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:23:35,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:23:35,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:23:35,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:23:35,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:23:35,266 INFO L87 Difference]: Start difference. First operand 179 states and 233 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 18:23:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:23:37,036 INFO L93 Difference]: Finished difference Result 283 states and 368 transitions. [2024-11-23 18:23:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:23:37,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 174 [2024-11-23 18:23:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:23:37,044 INFO L225 Difference]: With dead ends: 283 [2024-11-23 18:23:37,045 INFO L226 Difference]: Without dead ends: 177 [2024-11-23 18:23:37,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:23:37,047 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 57 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:23:37,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1333 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 18:23:37,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-23 18:23:37,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-23 18:23:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 105 states have (on average 1.1523809523809523) internal successors, (121), 106 states have internal predecessors, (121), 55 states have call successors, (55), 17 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-23 18:23:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 229 transitions. [2024-11-23 18:23:37,085 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 229 transitions. Word has length 174 [2024-11-23 18:23:37,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:23:37,086 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 229 transitions. [2024-11-23 18:23:37,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 18:23:37,086 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 229 transitions. [2024-11-23 18:23:37,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-23 18:23:37,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:23:37,090 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:23:37,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:23:37,091 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:23:37,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:23:37,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1453894743, now seen corresponding path program 1 times [2024-11-23 18:23:37,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:23:37,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169243774] [2024-11-23 18:23:37,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:23:37,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:23:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:23:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-23 18:23:46,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:23:46,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169243774] [2024-11-23 18:23:46,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169243774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:23:46,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:23:46,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:23:46,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884342296] [2024-11-23 18:23:46,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:23:46,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:23:46,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:23:46,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:23:46,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:23:46,051 INFO L87 Difference]: Start difference. First operand 177 states and 229 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 18:23:46,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:23:46,434 INFO L93 Difference]: Finished difference Result 306 states and 399 transitions. [2024-11-23 18:23:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:23:46,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 204 [2024-11-23 18:23:46,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:23:46,439 INFO L225 Difference]: With dead ends: 306 [2024-11-23 18:23:46,439 INFO L226 Difference]: Without dead ends: 195 [2024-11-23 18:23:46,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:23:46,442 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 6 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:23:46,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1338 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:23:46,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-23 18:23:46,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2024-11-23 18:23:46,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 114 states have (on average 1.1491228070175439) internal successors, (131), 115 states have internal predecessors, (131), 59 states have call successors, (59), 17 states have call predecessors, (59), 17 states have return successors, (58), 58 states have call predecessors, (58), 57 states have call successors, (58) [2024-11-23 18:23:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 248 transitions. [2024-11-23 18:23:46,486 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 248 transitions. Word has length 204 [2024-11-23 18:23:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:23:46,488 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 248 transitions. [2024-11-23 18:23:46,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 18:23:46,491 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 248 transitions. [2024-11-23 18:23:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-23 18:23:46,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:23:46,496 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:23:46,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:23:46,496 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:23:46,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:23:46,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1810031655, now seen corresponding path program 1 times [2024-11-23 18:23:46,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:23:46,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124536981] [2024-11-23 18:23:46,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:23:46,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:23:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:23:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-23 18:23:55,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:23:55,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124536981] [2024-11-23 18:23:55,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124536981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:23:55,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:23:55,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:23:55,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41094081] [2024-11-23 18:23:55,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:23:55,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:23:55,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:23:55,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:23:55,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:23:55,813 INFO L87 Difference]: Start difference. First operand 191 states and 248 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 18:23:56,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:23:56,361 INFO L93 Difference]: Finished difference Result 321 states and 422 transitions. [2024-11-23 18:23:56,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 18:23:56,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 204 [2024-11-23 18:23:56,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:23:56,364 INFO L225 Difference]: With dead ends: 321 [2024-11-23 18:23:56,364 INFO L226 Difference]: Without dead ends: 216 [2024-11-23 18:23:56,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:23:56,368 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 14 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:23:56,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1609 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 18:23:56,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-23 18:23:56,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 197. [2024-11-23 18:23:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 117 states have (on average 1.1452991452991452) internal successors, (134), 118 states have internal predecessors, (134), 62 states have call successors, (62), 17 states have call predecessors, (62), 17 states have return successors, (61), 61 states have call predecessors, (61), 60 states have call successors, (61) [2024-11-23 18:23:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 257 transitions. [2024-11-23 18:23:56,401 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 257 transitions. Word has length 204 [2024-11-23 18:23:56,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:23:56,401 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 257 transitions. [2024-11-23 18:23:56,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 18:23:56,402 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 257 transitions. [2024-11-23 18:23:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-23 18:23:56,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:23:56,408 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:23:56,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:23:56,409 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:23:56,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:23:56,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1752968215, now seen corresponding path program 1 times [2024-11-23 18:23:56,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:23:56,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334589201] [2024-11-23 18:23:56,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:23:56,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-23 18:24:07,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:07,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334589201] [2024-11-23 18:24:07,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334589201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:07,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169958574] [2024-11-23 18:24:07,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:07,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:07,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:07,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:07,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:24:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:16,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 4891 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 18:24:16,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-23 18:24:16,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:16,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169958574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:16,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:16,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 18:24:16,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427035142] [2024-11-23 18:24:16,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:16,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:24:16,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:16,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:24:16,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:16,531 INFO L87 Difference]: Start difference. First operand 197 states and 257 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 18:24:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:17,530 INFO L93 Difference]: Finished difference Result 302 states and 391 transitions. [2024-11-23 18:24:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:17,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) Word has length 204 [2024-11-23 18:24:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:17,534 INFO L225 Difference]: With dead ends: 302 [2024-11-23 18:24:17,534 INFO L226 Difference]: Without dead ends: 177 [2024-11-23 18:24:17,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:17,536 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:17,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 813 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 18:24:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-23 18:24:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-23 18:24:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 105 states have (on average 1.1333333333333333) internal successors, (119), 106 states have internal predecessors, (119), 55 states have call successors, (55), 17 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-23 18:24:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 227 transitions. [2024-11-23 18:24:17,555 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 227 transitions. Word has length 204 [2024-11-23 18:24:17,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:17,555 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 227 transitions. [2024-11-23 18:24:17,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 18:24:17,556 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 227 transitions. [2024-11-23 18:24:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-23 18:24:17,559 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:17,560 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:17,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 18:24:17,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:17,761 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:17,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:17,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1660677069, now seen corresponding path program 1 times [2024-11-23 18:24:17,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:17,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806532998] [2024-11-23 18:24:17,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 18:24:29,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432381521] [2024-11-23 18:24:29,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:29,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:29,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:29,760 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:29,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process