./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:05:55,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:05:55,403 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 05:05:55,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:05:55,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:05:55,451 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:05:55,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:05:55,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:05:55,453 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:05:55,453 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:05:55,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:05:55,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:05:55,454 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:05:55,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:05:55,455 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:05:55,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:05:55,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:05:55,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:05:55,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:05:55,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:05:55,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:05:55,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:05:55,455 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:05:55,456 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:05:55,456 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:05:55,456 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:05:55,456 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:05:55,456 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:05:55,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:05:55,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:05:55,456 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:05:55,456 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:05:55,456 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:05:55,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:05:55,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:05:55,457 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:05:55,457 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:05:55,457 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:05:55,457 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:05:55,457 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:05:55,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:05:55,457 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:05:55,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:05:55,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:05:55,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:05:55,458 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_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2024-11-28 05:05:55,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:05:55,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:05:55,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:05:55,789 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:05:55,790 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:05:55,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2024-11-28 05:05:58,641 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/data/935b3d490/f0221c4dbc6f47f19211ec0d1e59ca30/FLAGe9821e34f [2024-11-28 05:05:59,307 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:05:59,308 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2024-11-28 05:05:59,365 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/data/935b3d490/f0221c4dbc6f47f19211ec0d1e59ca30/FLAGe9821e34f [2024-11-28 05:05:59,702 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/data/935b3d490/f0221c4dbc6f47f19211ec0d1e59ca30 [2024-11-28 05:05:59,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:05:59,706 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:05:59,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:05:59,708 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:05:59,712 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:05:59,713 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:05:59" (1/1) ... [2024-11-28 05:05:59,714 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542953fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:59, skipping insertion in model container [2024-11-28 05:05:59,714 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:05:59" (1/1) ... [2024-11-28 05:05:59,828 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:06:00,160 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_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2024-11-28 05:06:00,169 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_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2024-11-28 05:06:01,214 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,215 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,215 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,216 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,221 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,238 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,239 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,241 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,241 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,243 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,244 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,245 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,246 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,870 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,878 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:01,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:06:01,999 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:06:02,014 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_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2024-11-28 05:06:02,017 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_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2024-11-28 05:06:02,092 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,092 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,093 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,093 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,094 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,108 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,108 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,109 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,114 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,115 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,116 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,116 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,116 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,235 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,240 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:02,247 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7765-7776] [2024-11-28 05:06:02,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:06:02,442 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:06:02,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02 WrapperNode [2024-11-28 05:06:02,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:06:02,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:06:02,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:06:02,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:06:02,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,524 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,602 INFO L138 Inliner]: procedures = 680, calls = 1679, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 687 [2024-11-28 05:06:02,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:06:02,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:06:02,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:06:02,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:06:02,621 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,632 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,693 INFO L175 MemorySlicer]: Split 323 memory accesses to 6 slices as follows [238, 2, 11, 3, 6, 63]. 74 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 5, 1, 0, 10]. The 240 writes are split as follows [232, 0, 0, 1, 2, 5]. [2024-11-28 05:06:02,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,740 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,744 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,772 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:06:02,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:06:02,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:06:02,792 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:06:02,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (1/1) ... [2024-11-28 05:06:02,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:06:02,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:02,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:06:02,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:06:02,857 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2024-11-28 05:06:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2024-11-28 05:06:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:06:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-28 05:06:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-28 05:06:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-28 05:06:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-28 05:06:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 05:06:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 05:06:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 05:06:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 05:06:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 05:06:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 05:06:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 05:06:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 05:06:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:06:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:06:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 05:06:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 05:06:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 05:06:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 05:06:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 05:06:02,860 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 05:06:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 05:06:02,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 05:06:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:06:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:06:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:06:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 05:06:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 05:06:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 05:06:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 05:06:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 05:06:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:06:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:06:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 05:06:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 05:06:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-28 05:06:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-28 05:06:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-28 05:06:02,862 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-28 05:06:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 05:06:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 05:06:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 05:06:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 05:06:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 05:06:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 05:06:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-28 05:06:02,863 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-28 05:06:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:06:02,863 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:06:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:06:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:06:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 05:06:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 05:06:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 05:06:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 05:06:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 05:06:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 05:06:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 05:06:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 05:06:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 05:06:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 05:06:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 05:06:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 05:06:02,864 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 05:06:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-28 05:06:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-28 05:06:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:06:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:06:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 05:06:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 05:06:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 05:06:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 05:06:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2024-11-28 05:06:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2024-11-28 05:06:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2024-11-28 05:06:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2024-11-28 05:06:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-28 05:06:02,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-28 05:06:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:06:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:06:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 05:06:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 05:06:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 05:06:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 05:06:03,253 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:06:03,255 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:06:09,654 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-11-28 05:06:09,654 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:06:09,668 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:06:09,668 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 05:06:09,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:09 BoogieIcfgContainer [2024-11-28 05:06:09,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:06:09,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:06:09,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:06:09,677 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:06:09,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:05:59" (1/3) ... [2024-11-28 05:06:09,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3810e324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:09, skipping insertion in model container [2024-11-28 05:06:09,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:02" (2/3) ... [2024-11-28 05:06:09,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3810e324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:09, skipping insertion in model container [2024-11-28 05:06:09,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:09" (3/3) ... [2024-11-28 05:06:09,680 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2024-11-28 05:06:09,696 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:06:09,698 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_pop_front_harness.i that has 17 procedures, 185 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 05:06:09,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:06:09,771 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;@2fc4c5af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:06:09,771 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:06:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-28 05:06:09,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 05:06:09,785 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:09,786 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:09,787 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:06:09,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:09,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1369416434, now seen corresponding path program 1 times [2024-11-28 05:06:09,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:09,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889239858] [2024-11-28 05:06:09,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:09,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 05:06:17,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:17,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889239858] [2024-11-28 05:06:17,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889239858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:17,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221420395] [2024-11-28 05:06:17,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:17,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:17,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:17,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:17,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:06:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:24,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 4159 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:06:24,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 05:06:24,366 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:24,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221420395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:24,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:06:24,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 05:06:24,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401011846] [2024-11-28 05:06:24,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:24,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:06:24,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:24,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:06:24,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:06:24,400 INFO L87 Difference]: Start difference. First operand has 185 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 05:06:24,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:24,474 INFO L93 Difference]: Finished difference Result 363 states and 519 transitions. [2024-11-28 05:06:24,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:06:24,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2024-11-28 05:06:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:24,487 INFO L225 Difference]: With dead ends: 363 [2024-11-28 05:06:24,487 INFO L226 Difference]: Without dead ends: 180 [2024-11-28 05:06:24,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:06:24,500 INFO L435 NwaCegarLoop]: 244 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, 244 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 [2024-11-28 05:06:24,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:06:24,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-28 05:06:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-28 05:06:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 107 states have internal predecessors, (126), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-28 05:06:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 239 transitions. [2024-11-28 05:06:24,566 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 239 transitions. Word has length 84 [2024-11-28 05:06:24,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:24,567 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 239 transitions. [2024-11-28 05:06:24,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 05:06:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 239 transitions. [2024-11-28 05:06:24,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 05:06:24,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:24,573 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:24,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:06:24,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 05:06:24,774 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:06:24,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:24,775 INFO L85 PathProgramCache]: Analyzing trace with hash -293931922, now seen corresponding path program 1 times [2024-11-28 05:06:24,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:24,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786395876] [2024-11-28 05:06:24,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:24,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-28 05:06:31,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:31,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786395876] [2024-11-28 05:06:31,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786395876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:31,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619437110] [2024-11-28 05:06:31,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:31,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:31,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:31,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:31,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:06:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:37,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 4159 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:06:37,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 05:06:37,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:37,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619437110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:37,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:06:37,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 05:06:37,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724208587] [2024-11-28 05:06:37,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:37,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:06:37,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:37,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:06:37,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:06:37,729 INFO L87 Difference]: Start difference. First operand 180 states and 239 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 05:06:39,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:39,444 INFO L93 Difference]: Finished difference Result 325 states and 446 transitions. [2024-11-28 05:06:39,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:06:39,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2024-11-28 05:06:39,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:39,449 INFO L225 Difference]: With dead ends: 325 [2024-11-28 05:06:39,450 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 05:06:39,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:06:39,452 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 253 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:39,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 722 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 05:06:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 05:06:39,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-28 05:06:39,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (66), 56 states have call predecessors, (66), 56 states have call successors, (66) [2024-11-28 05:06:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 250 transitions. [2024-11-28 05:06:39,477 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 250 transitions. Word has length 84 [2024-11-28 05:06:39,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:39,477 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 250 transitions. [2024-11-28 05:06:39,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 05:06:39,478 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 250 transitions. [2024-11-28 05:06:39,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 05:06:39,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:39,481 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:39,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:06:39,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 05:06:39,682 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:06:39,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2116490439, now seen corresponding path program 1 times [2024-11-28 05:06:39,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:39,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137999643] [2024-11-28 05:06:39,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:39,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-28 05:06:47,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:47,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137999643] [2024-11-28 05:06:47,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137999643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:47,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518874777] [2024-11-28 05:06:47,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:47,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:47,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:47,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:47,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:06:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:52,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 4286 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 05:06:52,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 05:06:54,021 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:54,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518874777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:54,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:06:54,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-28 05:06:54,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548902048] [2024-11-28 05:06:54,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:54,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:06:54,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:54,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:06:54,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:06:54,024 INFO L87 Difference]: Start difference. First operand 182 states and 250 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 05:06:57,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:57,123 INFO L93 Difference]: Finished difference Result 317 states and 440 transitions. [2024-11-28 05:06:57,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:06:57,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2024-11-28 05:06:57,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:57,129 INFO L225 Difference]: With dead ends: 317 [2024-11-28 05:06:57,129 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 05:06:57,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:06:57,132 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 273 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:57,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 975 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 05:06:57,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 05:06:57,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-28 05:06:57,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2024-11-28 05:06:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 247 transitions. [2024-11-28 05:06:57,166 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 247 transitions. Word has length 99 [2024-11-28 05:06:57,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:57,167 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 247 transitions. [2024-11-28 05:06:57,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 05:06:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 247 transitions. [2024-11-28 05:06:57,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 05:06:57,174 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:57,174 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:57,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:06:57,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:57,375 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:06:57,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:57,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1678054398, now seen corresponding path program 2 times [2024-11-28 05:06:57,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:57,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112850565] [2024-11-28 05:06:57,376 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:06:57,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:02,507 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:07:02,508 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:07:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-28 05:07:05,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:05,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112850565] [2024-11-28 05:07:05,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112850565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:05,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654344936] [2024-11-28 05:07:05,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:07:05,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:05,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:05,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:05,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ac8a14-a62b-41d7-96c1-a1dfef4f0ac9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process