./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_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_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4526081b0c55ba26ca543a72264ba075e2706c93c97faea07fd81ad62d180974 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:31:23,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:31:23,829 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 11:31:23,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:31:23,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:31:23,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:31:23,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:31:23,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:31:23,855 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:31:23,855 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:31:23,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:31:23,856 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:31:23,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:31:23,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:31:23,856 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:31:23,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:31:23,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:31:23,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:31:23,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:31:23,857 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:31:23,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:31:23,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:31:23,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:31:23,857 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:31:23,857 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:31:23,857 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:31:23,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:31:23,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:31:23,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:31:23,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:31:23,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:31:23,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:31:23,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:31:23,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:31:23,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:31:23,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:31:23,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:31:23,859 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:31:23,859 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:31:23,859 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:31:23,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:31:23,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:31:23,859 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:31:23,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:31:23,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:31:23,859 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_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4526081b0c55ba26ca543a72264ba075e2706c93c97faea07fd81ad62d180974 [2024-12-02 11:31:24,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:31:24,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:31:24,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:31:24,079 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:31:24,079 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:31:24,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2024-12-02 11:31:26,687 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/data/ee1d02b0f/d3d350f716c5458cb08eaa50508c3de7/FLAGa99eecde4 [2024-12-02 11:31:27,106 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:31:27,106 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2024-12-02 11:31:27,141 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/data/ee1d02b0f/d3d350f716c5458cb08eaa50508c3de7/FLAGa99eecde4 [2024-12-02 11:31:27,275 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/data/ee1d02b0f/d3d350f716c5458cb08eaa50508c3de7 [2024-12-02 11:31:27,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:31:27,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:31:27,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:31:27,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:31:27,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:31:27,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:31:27" (1/1) ... [2024-12-02 11:31:27,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5d4d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:27, skipping insertion in model container [2024-12-02 11:31:27,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:31:27" (1/1) ... [2024-12-02 11:31:27,368 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:31:27,573 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_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2024-12-02 11:31:27,579 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_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2024-12-02 11:31:28,282 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,283 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,283 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,284 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,285 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,301 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,302 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,304 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,305 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,306 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,307 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,308 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,308 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,856 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_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[150688,150701] [2024-12-02 11:31:28,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:31:28,871 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:31:28,883 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_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2024-12-02 11:31:28,884 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_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2024-12-02 11:31:28,926 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,926 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,927 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,927 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,928 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,936 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,937 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,938 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,938 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,939 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,939 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,940 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:28,940 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:31:29,032 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_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[150688,150701] [2024-12-02 11:31:29,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:31:29,171 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:31:29,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29 WrapperNode [2024-12-02 11:31:29,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:31:29,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:31:29,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:31:29,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:31:29,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,251 INFO L138 Inliner]: procedures = 668, calls = 1046, calls flagged for inlining = 53, calls inlined = 6, statements flattened = 149 [2024-12-02 11:31:29,252 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:31:29,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:31:29,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:31:29,252 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:31:29,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,263 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,281 INFO L175 MemorySlicer]: Split 35 memory accesses to 3 slices as follows [2, 5, 28]. 80 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 10 writes are split as follows [0, 0, 10]. [2024-12-02 11:31:29,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,295 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,310 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:31:29,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:31:29,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:31:29,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:31:29,312 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (1/1) ... [2024-12-02 11:31:29,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:31:29,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:31:29,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:31:29,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:31:29,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 11:31:29,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 11:31:29,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 11:31:29,368 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-12-02 11:31:29,368 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-12-02 11:31:29,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 11:31:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-12-02 11:31:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-12-02 11:31:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:31:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 11:31:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 11:31:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 11:31:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_insert_before [2024-12-02 11:31:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_insert_before [2024-12-02 11:31:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:31:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:31:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:31:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:31:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 11:31:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 11:31:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 11:31:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 11:31:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 11:31:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 11:31:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 11:31:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 11:31:29,370 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 11:31:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-12-02 11:31:29,370 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-12-02 11:31:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:31:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:31:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 11:31:29,580 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:31:29,582 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:31:29,891 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-12-02 11:31:29,891 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:31:29,901 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:31:29,902 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:31:29,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:31:29 BoogieIcfgContainer [2024-12-02 11:31:29,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:31:29,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:31:29,904 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:31:29,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:31:29,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:31:27" (1/3) ... [2024-12-02 11:31:29,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb935fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:31:29, skipping insertion in model container [2024-12-02 11:31:29,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:29" (2/3) ... [2024-12-02 11:31:29,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb935fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:31:29, skipping insertion in model container [2024-12-02 11:31:29,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:31:29" (3/3) ... [2024-12-02 11:31:29,911 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_push_back_harness.i [2024-12-02 11:31:29,926 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:31:29,927 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_push_back_harness.i that has 8 procedures, 102 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-12-02 11:31:29,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:31:29,996 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;@2f97ae75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:31:29,996 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:31:30,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 66 states have internal predecessors, (84), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-12-02 11:31:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 11:31:30,009 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:30,009 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:30,010 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:30,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash 726528637, now seen corresponding path program 1 times [2024-12-02 11:31:30,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:30,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716817612] [2024-12-02 11:31:30,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:30,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 11:31:30,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:30,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716817612] [2024-12-02 11:31:30,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716817612] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:31:30,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932597721] [2024-12-02 11:31:30,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:30,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:31:30,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:31:30,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:31:30,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:31:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:30,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:31:30,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:31:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 11:31:30,589 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:31:30,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932597721] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:30,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:31:30,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 11:31:30,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314737625] [2024-12-02 11:31:30,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:30,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:31:30,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:30,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:31:30,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:31:30,611 INFO L87 Difference]: Start difference. First operand has 102 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 66 states have internal predecessors, (84), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 11:31:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:30,642 INFO L93 Difference]: Finished difference Result 196 states and 291 transitions. [2024-12-02 11:31:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:31:30,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2024-12-02 11:31:30,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:30,650 INFO L225 Difference]: With dead ends: 196 [2024-12-02 11:31:30,650 INFO L226 Difference]: Without dead ends: 97 [2024-12-02 11:31:30,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:31:30,656 INFO L435 NwaCegarLoop]: 136 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, 136 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:30,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:31:30,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-12-02 11:31:30,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-12-02 11:31:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 62 states have internal predecessors, (76), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-02 11:31:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 131 transitions. [2024-12-02 11:31:30,693 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 131 transitions. Word has length 73 [2024-12-02 11:31:30,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:30,693 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 131 transitions. [2024-12-02 11:31:30,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 11:31:30,693 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 131 transitions. [2024-12-02 11:31:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 11:31:30,696 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:30,696 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:30,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:31:30,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:31:30,897 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:30,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:30,897 INFO L85 PathProgramCache]: Analyzing trace with hash -367939653, now seen corresponding path program 1 times [2024-12-02 11:31:30,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:30,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989912065] [2024-12-02 11:31:30,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:30,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 11:31:31,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:31,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989912065] [2024-12-02 11:31:31,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989912065] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:31,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:31,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:31:31,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442088234] [2024-12-02 11:31:31,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:31,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:31:31,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:31,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:31:31,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:31:31,379 INFO L87 Difference]: Start difference. First operand 97 states and 131 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 11:31:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:31,479 INFO L93 Difference]: Finished difference Result 196 states and 272 transitions. [2024-12-02 11:31:31,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:31:31,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 73 [2024-12-02 11:31:31,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:31,482 INFO L225 Difference]: With dead ends: 196 [2024-12-02 11:31:31,482 INFO L226 Difference]: Without dead ends: 97 [2024-12-02 11:31:31,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:31:31,484 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 40 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:31,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 460 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:31:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-12-02 11:31:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-12-02 11:31:31,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 62 states have internal predecessors, (75), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-02 11:31:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 130 transitions. [2024-12-02 11:31:31,497 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 130 transitions. Word has length 73 [2024-12-02 11:31:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:31,499 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 130 transitions. [2024-12-02 11:31:31,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 11:31:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 130 transitions. [2024-12-02 11:31:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 11:31:31,500 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:31,500 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:31,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:31:31,501 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:31,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:31,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1754725063, now seen corresponding path program 1 times [2024-12-02 11:31:31,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:31,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498661863] [2024-12-02 11:31:31,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:31,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 11:31:32,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:32,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498661863] [2024-12-02 11:31:32,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498661863] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:31:32,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409566288] [2024-12-02 11:31:32,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:32,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:31:32,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:31:32,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:31:32,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:31:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:32,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-12-02 11:31:32,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:31:32,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-12-02 11:31:32,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-12-02 11:31:32,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-12-02 11:31:33,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:31:33,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:31:33,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 299 [2024-12-02 11:31:33,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:31:33,786 INFO L349 Elim1Store]: treesize reduction 118, result has 25.3 percent of original size [2024-12-02 11:31:33,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 139 treesize of output 133 [2024-12-02 11:31:33,820 INFO L349 Elim1Store]: treesize reduction 124, result has 3.9 percent of original size [2024-12-02 11:31:33,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 253 treesize of output 245 [2024-12-02 11:31:33,836 INFO L349 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2024-12-02 11:31:33,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 195 treesize of output 123 [2024-12-02 11:31:33,843 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 11:31:33,858 INFO L349 Elim1Store]: treesize reduction 36, result has 12.2 percent of original size [2024-12-02 11:31:33,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 101 treesize of output 91 [2024-12-02 11:31:33,886 INFO L349 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2024-12-02 11:31:33,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 67 [2024-12-02 11:31:33,899 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 11:31:33,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 1 [2024-12-02 11:31:33,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 78 [2024-12-02 11:31:33,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2024-12-02 11:31:33,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2024-12-02 11:31:34,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:31:34,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:31:34,656 INFO L349 Elim1Store]: treesize reduction 141, result has 31.2 percent of original size [2024-12-02 11:31:34,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 185 treesize of output 161 [2024-12-02 11:31:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 11:31:34,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:31:35,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:31:35,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 80 [2024-12-02 11:31:35,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:31:35,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 446 treesize of output 442 [2024-12-02 11:31:35,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 259 [2024-12-02 11:31:35,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-12-02 11:31:35,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 138 [2024-12-02 11:31:35,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1594 treesize of output 1582 [2024-12-02 11:31:39,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409566288] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:31:39,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:31:39,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 20] total 24 [2024-12-02 11:31:39,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475982315] [2024-12-02 11:31:39,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:31:39,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 11:31:39,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:39,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 11:31:39,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=909, Unknown=1, NotChecked=0, Total=992 [2024-12-02 11:31:39,770 INFO L87 Difference]: Start difference. First operand 97 states and 130 transitions. Second operand has 24 states, 21 states have (on average 3.761904761904762) internal successors, (79), 19 states have internal predecessors, (79), 8 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2024-12-02 11:31:43,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:31:47,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:31:52,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:31:56,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:32:00,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:32:04,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:32:09,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:32:10,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:32:10,808 INFO L93 Difference]: Finished difference Result 318 states and 430 transitions. [2024-12-02 11:32:10,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 11:32:10,809 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.761904761904762) internal successors, (79), 19 states have internal predecessors, (79), 8 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 73 [2024-12-02 11:32:10,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:32:10,813 INFO L225 Difference]: With dead ends: 318 [2024-12-02 11:32:10,813 INFO L226 Difference]: Without dead ends: 232 [2024-12-02 11:32:10,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 58 SyntacticMatches, 11 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=254, Invalid=2937, Unknown=1, NotChecked=0, Total=3192 [2024-12-02 11:32:10,816 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 294 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 120 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:32:10,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1700 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1059 Invalid, 7 Unknown, 0 Unchecked, 30.0s Time] [2024-12-02 11:32:10,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-12-02 11:32:10,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2024-12-02 11:32:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 148 states have (on average 1.2635135135135136) internal successors, (187), 152 states have internal predecessors, (187), 56 states have call successors, (56), 17 states have call predecessors, (56), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2024-12-02 11:32:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 302 transitions. [2024-12-02 11:32:10,852 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 302 transitions. Word has length 73 [2024-12-02 11:32:10,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:32:10,852 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 302 transitions. [2024-12-02 11:32:10,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.761904761904762) internal successors, (79), 19 states have internal predecessors, (79), 8 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2024-12-02 11:32:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 302 transitions. [2024-12-02 11:32:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 11:32:10,854 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:32:10,854 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:32:10,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 11:32:11,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:32:11,055 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:32:11,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:32:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1107486203, now seen corresponding path program 1 times [2024-12-02 11:32:11,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:32:11,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458743001] [2024-12-02 11:32:11,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:32:11,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:32:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 11:32:11,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:32:11,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458743001] [2024-12-02 11:32:11,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458743001] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:32:11,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:32:11,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:32:11,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187748507] [2024-12-02 11:32:11,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:32:11,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:32:11,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:32:11,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:32:11,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:32:11,238 INFO L87 Difference]: Start difference. First operand 224 states and 302 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 11:32:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:32:11,343 INFO L93 Difference]: Finished difference Result 422 states and 569 transitions. [2024-12-02 11:32:11,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:32:11,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2024-12-02 11:32:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:32:11,347 INFO L225 Difference]: With dead ends: 422 [2024-12-02 11:32:11,347 INFO L226 Difference]: Without dead ends: 232 [2024-12-02 11:32:11,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:32:11,348 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 24 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:32:11,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 643 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:32:11,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-12-02 11:32:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2024-12-02 11:32:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 148 states have (on average 1.2432432432432432) internal successors, (184), 152 states have internal predecessors, (184), 56 states have call successors, (56), 17 states have call predecessors, (56), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2024-12-02 11:32:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 299 transitions. [2024-12-02 11:32:11,375 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 299 transitions. Word has length 75 [2024-12-02 11:32:11,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:32:11,376 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 299 transitions. [2024-12-02 11:32:11,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 11:32:11,376 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 299 transitions. [2024-12-02 11:32:11,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 11:32:11,378 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:32:11,378 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:32:11,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:32:11,378 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:32:11,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:32:11,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2003546445, now seen corresponding path program 1 times [2024-12-02 11:32:11,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:32:11,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413119548] [2024-12-02 11:32:11,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:32:11,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:32:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 11:32:11,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:32:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413119548] [2024-12-02 11:32:11,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413119548] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:32:11,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:32:11,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:32:11,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201329409] [2024-12-02 11:32:11,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:32:11,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:32:11,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:32:11,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:32:11,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:32:11,619 INFO L87 Difference]: Start difference. First operand 224 states and 299 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 11:32:11,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:32:11,772 INFO L93 Difference]: Finished difference Result 440 states and 594 transitions. [2024-12-02 11:32:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:32:11,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2024-12-02 11:32:11,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:32:11,775 INFO L225 Difference]: With dead ends: 440 [2024-12-02 11:32:11,775 INFO L226 Difference]: Without dead ends: 247 [2024-12-02 11:32:11,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:32:11,777 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 33 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:32:11,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 739 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:32:11,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-12-02 11:32:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 227. [2024-12-02 11:32:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 151 states have (on average 1.2384105960264902) internal successors, (187), 155 states have internal predecessors, (187), 56 states have call successors, (56), 17 states have call predecessors, (56), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2024-12-02 11:32:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 302 transitions. [2024-12-02 11:32:11,805 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 302 transitions. Word has length 77 [2024-12-02 11:32:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:32:11,805 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 302 transitions. [2024-12-02 11:32:11,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 11:32:11,805 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 302 transitions. [2024-12-02 11:32:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 11:32:11,806 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:32:11,807 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-12-02 11:32:11,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:32:11,807 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:32:11,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:32:11,807 INFO L85 PathProgramCache]: Analyzing trace with hash -51320959, now seen corresponding path program 1 times [2024-12-02 11:32:11,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:32:11,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084031458] [2024-12-02 11:32:11,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:32:11,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:32:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 11:32:12,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:32:12,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084031458] [2024-12-02 11:32:12,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084031458] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:32:12,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:32:12,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:32:12,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105551084] [2024-12-02 11:32:12,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:32:12,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:32:12,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:32:12,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:32:12,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:32:12,127 INFO L87 Difference]: Start difference. First operand 227 states and 302 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 11:32:12,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:32:12,294 INFO L93 Difference]: Finished difference Result 442 states and 593 transitions. [2024-12-02 11:32:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:32:12,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2024-12-02 11:32:12,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:32:12,297 INFO L225 Difference]: With dead ends: 442 [2024-12-02 11:32:12,297 INFO L226 Difference]: Without dead ends: 247 [2024-12-02 11:32:12,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:32:12,299 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 28 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:32:12,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 748 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:32:12,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-12-02 11:32:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 230. [2024-12-02 11:32:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 154 states have (on average 1.2337662337662338) internal successors, (190), 158 states have internal predecessors, (190), 56 states have call successors, (56), 17 states have call predecessors, (56), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2024-12-02 11:32:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 305 transitions. [2024-12-02 11:32:12,325 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 305 transitions. Word has length 78 [2024-12-02 11:32:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:32:12,326 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 305 transitions. [2024-12-02 11:32:12,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 11:32:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 305 transitions. [2024-12-02 11:32:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 11:32:12,327 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:32:12,327 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-12-02 11:32:12,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:32:12,327 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:32:12,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:32:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1918872991, now seen corresponding path program 1 times [2024-12-02 11:32:12,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:32:12,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953075395] [2024-12-02 11:32:12,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:32:12,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:32:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 11:32:12,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:32:12,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953075395] [2024-12-02 11:32:12,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953075395] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:32:12,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757627200] [2024-12-02 11:32:12,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:32:12,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:32:12,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:32:12,953 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:32:12,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba567fa6-ab54-4a26-9fd6-85ce30b984a1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:32:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:13,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 11:32:13,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:32:13,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:32:13,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 132 [2024-12-02 11:32:13,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:32:13,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 67 [2024-12-02 11:32:13,363 INFO L349 Elim1Store]: treesize reduction 127, result has 9.3 percent of original size [2024-12-02 11:32:13,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 104 treesize of output 104 [2024-12-02 11:32:13,369 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 11:32:13,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 38 [2024-12-02 11:32:13,390 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-12-02 11:32:13,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-12-02 11:32:13,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:32:13,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 155 [2024-12-02 11:32:13,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:32:13,413 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2024-12-02 11:32:13,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 82 [2024-12-02 11:32:13,444 INFO L349 Elim1Store]: treesize reduction 121, result has 11.0 percent of original size [2024-12-02 11:32:13,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 118 treesize of output 107 [2024-12-02 11:32:13,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-12-02 11:32:13,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 43 [2024-12-02 11:32:13,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 107 [2024-12-02 11:32:13,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 85 [2024-12-02 11:32:13,546 INFO L349 Elim1Store]: treesize reduction 35, result has 43.5 percent of original size [2024-12-02 11:32:13,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 148 [2024-12-02 11:32:13,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 138 [2024-12-02 11:32:13,602 INFO L349 Elim1Store]: treesize reduction 65, result has 15.6 percent of original size [2024-12-02 11:32:13,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 909 treesize of output 886 [2024-12-02 11:32:13,644 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 11:32:13,648 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 11:32:13,812 INFO L349 Elim1Store]: treesize reduction 250, result has 31.9 percent of original size [2024-12-02 11:32:13,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 180 treesize of output 339 [2024-12-02 11:32:14,787 INFO L349 Elim1Store]: treesize reduction 67, result has 25.6 percent of original size [2024-12-02 11:32:14,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 60 treesize of output 46 [2024-12-02 11:32:14,852 INFO L349 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2024-12-02 11:32:14,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 13 [2024-12-02 11:32:15,189 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-12-02 11:32:16,214 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 11:32:16,215 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 11:32:16,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 5 [2024-12-02 11:32:16,324 INFO L349 Elim1Store]: treesize reduction 55, result has 16.7 percent of original size [2024-12-02 11:32:16,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 230 [2024-12-02 11:32:16,443 INFO L349 Elim1Store]: treesize reduction 87, result has 1.1 percent of original size [2024-12-02 11:32:16,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 163 treesize of output 125 [2024-12-02 11:32:17,339 INFO L349 Elim1Store]: treesize reduction 337, result has 14.2 percent of original size [2024-12-02 11:32:17,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 663 treesize of output 712 [2024-12-02 11:32:24,515 WARN L286 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 254 DAG size of output: 48 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-12-02 11:32:24,516 INFO L349 Elim1Store]: treesize reduction 838, result has 7.7 percent of original size [2024-12-02 11:32:24,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 9 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 614 treesize of output 1399 [2024-12-02 11:46:18,347 WARN L286 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 14429 DAG size of output: 17140 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)